From 6adfd8ab901770475b8b5fe7fb201e0d184cbb78 Mon Sep 17 00:00:00 2001 From: Lakshya-2440 Date: Mon, 23 Feb 2026 10:26:28 +0530 Subject: [PATCH 1/2] Add virtual lab playground and configuration --- .gitignore | 13 + fix_urls.py | 22 + image.png | Bin 0 -> 5111 bytes manage.py | 22 + poetry.lock | 1935 ++++ pyproject.toml | 66 + remove_navbar.py | 19 + web/__init__.py | 0 web/settings.py | 505 + web/static/img/image.png | Bin 0 -> 5111 bytes web/templates/base.html | 571 ++ web/templates/index.html | 780 ++ web/urls.py | 16 + web/views.py | 8846 +++++++++++++++++ web/virtual_lab/__init__.py | 0 web/virtual_lab/apps.py | 10 + web/virtual_lab/css/virtual_lab.css | 0 web/virtual_lab/models.py | 0 .../virtual_lab/js/chemistry/ph_indicator.js | 138 + .../virtual_lab/js/chemistry/precipitation.js | 134 + .../virtual_lab/js/chemistry/reaction_rate.js | 82 + .../virtual_lab/js/chemistry/solubility.js | 73 + .../virtual_lab/js/chemistry/titration.js | 117 + .../static/virtual_lab/js/code_editor.js | 53 + .../static/virtual_lab/js/common.js | 41 + .../js/physics_electrical_circuit.js | 404 + .../static/virtual_lab/js/physics_inclined.js | 497 + .../virtual_lab/js/physics_mass_spring.js | 363 + .../static/virtual_lab/js/physics_pendulum.js | 396 + .../virtual_lab/js/physics_projectile.js | 412 + .../virtual_lab/chemistry/index.html | 58 + .../virtual_lab/chemistry/ph_indicator.html | 58 + .../virtual_lab/chemistry/precipitation.html | 56 + .../virtual_lab/chemistry/reaction_rate.html | 54 + .../virtual_lab/chemistry/solubility.html | 53 + .../virtual_lab/chemistry/titration.html | 78 + .../virtual_lab/code_editor/code_editor.html | 82 + .../templates/virtual_lab/home.html | 51 + .../templates/virtual_lab/layout.html | 77 + .../virtual_lab/physics/circuit.html | 157 + .../virtual_lab/physics/inclined.html | 179 + .../virtual_lab/physics/mass_spring.html | 178 + .../virtual_lab/physics/pendulum.html | 127 + .../virtual_lab/physics/projectile.html | 158 + web/virtual_lab/tests.py | 0 web/virtual_lab/urls.py | 37 + web/virtual_lab/views.py | 136 + web/wsgi.py | 5 + 48 files changed, 17059 insertions(+) create mode 100644 .gitignore create mode 100644 fix_urls.py create mode 100644 image.png create mode 100644 manage.py create mode 100644 poetry.lock create mode 100644 pyproject.toml create mode 100644 remove_navbar.py create mode 100644 web/__init__.py create mode 100644 web/settings.py create mode 100644 web/static/img/image.png create mode 100644 web/templates/base.html create mode 100644 web/templates/index.html create mode 100644 web/urls.py create mode 100644 web/views.py create mode 100644 web/virtual_lab/__init__.py create mode 100644 web/virtual_lab/apps.py create mode 100644 web/virtual_lab/css/virtual_lab.css create mode 100644 web/virtual_lab/models.py create mode 100644 web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js create mode 100644 web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js create mode 100644 web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js create mode 100644 web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js create mode 100644 web/virtual_lab/static/virtual_lab/js/chemistry/titration.js create mode 100644 web/virtual_lab/static/virtual_lab/js/code_editor.js create mode 100644 web/virtual_lab/static/virtual_lab/js/common.js create mode 100644 web/virtual_lab/static/virtual_lab/js/physics_electrical_circuit.js create mode 100644 web/virtual_lab/static/virtual_lab/js/physics_inclined.js create mode 100644 web/virtual_lab/static/virtual_lab/js/physics_mass_spring.js create mode 100644 web/virtual_lab/static/virtual_lab/js/physics_pendulum.js create mode 100644 web/virtual_lab/static/virtual_lab/js/physics_projectile.js create mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/index.html create mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html create mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html create mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html create mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/solubility.html create mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/titration.html create mode 100644 web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html create mode 100644 web/virtual_lab/templates/virtual_lab/home.html create mode 100644 web/virtual_lab/templates/virtual_lab/layout.html create mode 100644 web/virtual_lab/templates/virtual_lab/physics/circuit.html create mode 100644 web/virtual_lab/templates/virtual_lab/physics/inclined.html create mode 100644 web/virtual_lab/templates/virtual_lab/physics/mass_spring.html create mode 100644 web/virtual_lab/templates/virtual_lab/physics/pendulum.html create mode 100644 web/virtual_lab/templates/virtual_lab/physics/projectile.html create mode 100644 web/virtual_lab/tests.py create mode 100644 web/virtual_lab/urls.py create mode 100644 web/virtual_lab/views.py create mode 100644 web/wsgi.py diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..62334fd --- /dev/null +++ b/.gitignore @@ -0,0 +1,13 @@ +db.sqlite3 +*.pyc +/staticfiles +.vscode/settings.json +.vscode/launch.json +venv/ +/media +.env* +backup.json +.notes +ansible/inventory.yml +education-website-*.json +*.sql diff --git a/fix_urls.py b/fix_urls.py new file mode 100644 index 0000000..1b71997 --- /dev/null +++ b/fix_urls.py @@ -0,0 +1,22 @@ +import re +import os + +filepath = "web/templates/base.html" +with open(filepath, "r") as f: + content = f.read() + +# Find all {% url 'something' ... %} +# We'll use a regex that matches the whole tag +pattern = r"{%\s*url\s+['\"]([^'\"]+)['\"][^%]*%}" + +def replace_url(match): + url_target = match.group(1) + if 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0 to enable performance + # Do not send Invalid Host (DisallowedHost) errors to Sentry + ignore_errors=(DisallowedHost,), + ) +else: + # Helpful notice for ops without breaking startup + print("Sentry DSN not configured; error events will not be sent.") + +SECRET_KEY = env.str("SECRET_KEY", default="django-insecure-5kyff0s@l_##j3jawec5@b%!^^e(j7v)ouj4b7q6kru#o#a)o3") +# Debug settings +ENVIRONMENT = env.str("ENVIRONMENT", default="development") + +# Default DEBUG to False for security +DEBUG = False + +# Only enable DEBUG in local environment and only if DJANGO_DEBUG is True +if ENVIRONMENT == "development": + DEBUG = True + +# Detect test environment and set DEBUG=True to use local media path +if "test" in sys.argv: + TESTING = True + DEBUG = True +else: + TESTING = False + +PA_USER = "alphaonelabs99282llkb" +PA_HOST = PA_USER + ".pythonanywhere.com" +PA_WSGI = "/var/www/" + PA_USER + "_pythonanywhere_com_wsgi.py" +PA_SOURCE_DIR = "/home/" + PA_USER + "/web" + +# Social Media Settings +TWITTER_USERNAME = "alphaonelabs" +TWITTER_API_KEY = os.getenv("TWITTER_API_KEY") +TWITTER_API_SECRET_KEY = os.getenv("TWITTER_API_SECRET_KEY") +TWITTER_ACCESS_TOKEN = os.getenv("TWITTER_ACCESS_TOKEN") +TWITTER_ACCESS_TOKEN_SECRET = os.getenv("TWITTER_ACCESS_TOKEN_SECRET") + +# Production settings +if not DEBUG: + # SECURE_SSL_REDIRECT = True + # adding this to prevent redirect loop + SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https") + SESSION_COOKIE_SECURE = True + CSRF_COOKIE_SECURE = True + SECURE_HSTS_SECONDS = 31536000 # 1 year + SECURE_HSTS_INCLUDE_SUBDOMAINS = True + SECURE_HSTS_PRELOAD = True + SECURE_BROWSER_XSS_FILTER = True + SECURE_CONTENT_TYPE_NOSNIFF = True + SECURE_REDIRECT_EXEMPT = [] + SECURE_SSL_HOST = "alphaonelabs.com" + SECURE_REFERRER_POLICY = "strict-origin-when-cross-origin" + +# Allow hosts list can be overridden via .env (comma-separated) while providing a strong default. +ALLOWED_HOSTS = env.list( + "ALLOWED_HOSTS", + default=[ + "alphaonelabs99282llkb.pythonanywhere.com", + "0.0.0.0", + "127.0.0.1", + "localhost", + "alphaonelabs.com", + ".alphaonelabs.com", + ], +) + +# CSRF trusted origins can also be overridden through .env (comma-separated). +CSRF_TRUSTED_ORIGINS = env.list( + "CSRF_TRUSTED_ORIGINS", + default=[ + "https://alphaonelabs.com", + "https://www.alphaonelabs.com", + "http://127.0.0.1:8000", + "http://localhost:8000", + ], +) + +# Timezone settings +TIME_ZONE = "America/New_York" +USE_TZ = True + +# Error handling +handler404 = "django.views.defaults.page_not_found" +# Custom handler for 429 (too many requests) +# handler429 = "web.views.custom_429" + +# Admin notification settings +ADMINS = [("Admin", os.getenv("EMAIL_FROM"))] +SERVER_EMAIL = os.getenv("EMAIL_FROM") # Email address error messages come from + +INSTALLED_APPS = [ + "django.contrib.admin", + "django.contrib.auth", + "django.contrib.contenttypes", + "django.contrib.sessions", + "django.contrib.messages", + "django.contrib.staticfiles", + "django.contrib.sites", + "django.contrib.humanize", + "channels", + "allauth", + "allauth.account", + "captcha", + "markdownx", + "web", + "web.virtual_lab.apps.VirtualLabConfig", +] + +if DEBUG and not TESTING: + INSTALLED_APPS.append("django_browser_reload") + +MIDDLEWARE = [ + "django.middleware.security.SecurityMiddleware", + # Compress responses to reduce payload size + "django.middleware.gzip.GZipMiddleware", + "whitenoise.middleware.WhiteNoiseMiddleware", + "django.contrib.sessions.middleware.SessionMiddleware", + "django.middleware.locale.LocaleMiddleware", + "django.middleware.common.CommonMiddleware", + "django.middleware.csrf.CsrfViewMiddleware", + "django.contrib.auth.middleware.AuthenticationMiddleware", + "django.contrib.messages.middleware.MessageMiddleware", + "django.middleware.clickjacking.XFrameOptionsMiddleware", + "allauth.account.middleware.AccountMiddleware", + # "web.middleware.GlobalExceptionMiddleware", +] + +if DEBUG and not TESTING: + MIDDLEWARE.insert(-2, "django_browser_reload.middleware.BrowserReloadMiddleware") + +ROOT_URLCONF = "web.urls" + +TEMPLATES = [ + { + "BACKEND": "django.template.backends.django.DjangoTemplates", + "DIRS": [BASE_DIR / "web/templates"], + # Use cached loaders in production to avoid repeated template parsing + "APP_DIRS": DEBUG, + "OPTIONS": { + "context_processors": [ + "django.template.context_processors.debug", + "django.template.context_processors.request", + "django.contrib.auth.context_processors.auth", + "django.contrib.messages.context_processors.messages", + ], + **( + {} + if DEBUG + else { + "loaders": [ + ( + "django.template.loaders.cached.Loader", + [ + "django.template.loaders.filesystem.Loader", + "django.template.loaders.app_directories.Loader", + ], + ) + ] + } + ), + }, + }, +] + +CAPTCHA_FONT_SIZE = 28 +CAPTCHA_IMAGE_SIZE = (150, 40) +CAPTCHA_LETTER_ROTATION = (-20, 20) +CAPTCHA_BACKGROUND_COLOR = "#f0f8ff" +CAPTCHA_FOREGROUND_COLOR = "#2f4f4f" +CAPTCHA_NOISE_FUNCTIONS = ("captcha.helpers.noise_arcs", "captcha.helpers.noise_dots") +CAPTCHA_FILTER_FUNCTIONS = ("captcha.helpers.post_smooth",) +CAPTCHA_2X_IMAGE = True +CAPTCHA_TEST_MODE = False + +WSGI_APPLICATION = "web.wsgi.application" + +# Add ASGI application configuration + +# Channels / Redis channel layer configuration (assumes a local Redis unless overridden) +REDIS_URL = env.str("REDIS_URL", default="redis://127.0.0.1:6379/0") +CHANNEL_LAYERS = { + "default": { + "BACKEND": "channels_redis.core.RedisChannelLayer", + "CONFIG": {"hosts": [REDIS_URL]}, + } +} + +DATABASES = { + "default": { + "ENGINE": "django.db.backends.sqlite3", + "NAME": BASE_DIR / "db.sqlite3", + # Persist DB connections to avoid reconnect overhead in production + "CONN_MAX_AGE": 300 if not DEBUG else 0, + } +} + +AUTH_PASSWORD_VALIDATORS = [ + { + "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator", + }, + { + "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator", + }, + { + "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator", + }, + { + "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator", + }, +] + +SITE_ID = 1 +SITE_NAME = "AlphaOne Labs" +SITE_DOMAIN = "alphaonelabs.com" + +# Allauth settings +ACCOUNT_EMAIL_REQUIRED = True +ACCOUNT_USERNAME_REQUIRED = False # Since we're using email authentication +ACCOUNT_EMAIL_VERIFICATION = "mandatory" # Require email verification +ACCOUNT_LOGIN_METHODS = {"email"} +ACCOUNT_UNIQUE_EMAIL = True +ACCOUNT_PREVENT_ENUMERATION = True # Prevent user enumeration +ACCOUNT_USERNAME_MIN_LENGTH = 3 +ACCOUNT_LOGIN_ON_EMAIL_CONFIRMATION = True +ACCOUNT_SESSION_REMEMBER = None # Let user decide via checkbox +ACCOUNT_REMEMBER_ME_FIELD = "remember" # Match test field name +ACCOUNT_LOGIN_ON_PASSWORD_RESET = True +ACCOUNT_SIGNUP_PASSWORD_ENTER_TWICE = False +ACCOUNT_LOGOUT_ON_GET = True +ACCOUNT_SIGNUP_EMAIL_ENTER_TWICE = False +ACCOUNT_LOGOUT_ON_PASSWORD_CHANGE = False +ACCOUNT_OLD_PASSWORD_FIELD_ENABLED = True +ACCOUNT_EMAIL_AUTHENTICATION = True # Enable email authentication +ACCOUNT_EMAIL_CONFIRMATION_AUTHENTICATED_REDIRECT_URL = "index" +ACCOUNT_EMAIL_CONFIRMATION_ANONYMOUS_REDIRECT_URL = "account_login" + +# Authentication backends +AUTHENTICATION_BACKENDS = [ + "django.contrib.auth.backends.ModelBackend", + "allauth.account.auth_backends.AuthenticationBackend", +] + +# Authentication URLs +LOGIN_URL = "account_login" +LOGIN_REDIRECT_URL = "index" +LOGOUT_REDIRECT_URL = "index" + +ACCOUNT_RATE_LIMITS = { + "login_attempt": "5/5m", # 5 attempts per 5 minutes + "login_failed": "3/5m", # 3 failed attempts per 5 minutes + "signup": "5/h", # 5 signups per hour + "send_email": "5/5m", # 5 emails per 5 minutes + "change_email": "3/h", # 3 email changes per hour +} + +# Override allauth forms + +LANGUAGE_CODE = "en" + +TIME_ZONE = "UTC" + +USE_I18N = True + +USE_TZ = True + + +STATIC_URL = "/static/" + + +DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField" + +""" +Media files configuration + +Previously MEDIA_ROOT for production was hard-coded to the legacy PythonAnywhere +path (/home/alphaonelabs99282llkb/web/media). That prevented the live server +from locating media we now place under the project directory on the new VPS. + +We switch to an environment-variable override with a sane default pointing to +/media for both dev and prod (unless a cloud storage backend is +configured later). This keeps URLs stable (/media/...) while aligning file +paths with the Nginx alias in ansible/nginx-http.conf.j2: + location /media/ { alias /home/django/education-website/media/; } + +If GS_BUCKET_NAME is set above, DEFAULT_FILE_STORAGE will override this with +Google Cloud Storage; in that case MEDIA_ROOT is less relevant. +""" +MEDIA_ROOT = env.str("MEDIA_ROOT", default=str(BASE_DIR / "media")) +MEDIA_URL = "/media/" + +STATIC_ROOT = os.path.join(BASE_DIR, "staticfiles") +STATICFILES_DIRS = [BASE_DIR / "static"] +STATICFILES_STORAGE = "whitenoise.storage.CompressedManifestStaticFilesStorage" + +# Caching configuration: fast in-memory cache by default; can be +# overridden via environment (e.g., django-redis) without code changes. +CACHES = { + "default": { + "BACKEND": "django.core.cache.backends.locmem.LocMemCache", + "LOCATION": "alphaonelabs-local", + "TIMEOUT": 300, + "OPTIONS": {"MAX_ENTRIES": 10000}, + } +} + +# Cache middleware settings (usable when wrapping views or enabling site-wide cache) +CACHE_MIDDLEWARE_ALIAS = "default" +CACHE_MIDDLEWARE_SECONDS = int(os.getenv("CACHE_MIDDLEWARE_SECONDS", "300")) +CACHE_MIDDLEWARE_KEY_PREFIX = os.getenv("CACHE_MIDDLEWARE_KEY_PREFIX", "aol") + +# Use cached sessions in normal runtime to reduce DB hits; keep default during tests +if not TESTING: + SESSION_ENGINE = "django.contrib.sessions.backends.cached_db" + +# Drop noisy Invalid Host messages from logs entirely +LOGGING = { + "version": 1, + "disable_existing_loggers": False, + "handlers": { + "null": {"class": "logging.NullHandler"}, + # Ensure any accidental use of 'mail_admins' will be a no-op + "mail_admins": {"class": "logging.NullHandler"}, + }, + "loggers": { + # Django emits DisallowedHost on invalid/missing Host header; silence it + "django.security.DisallowedHost": { + "handlers": ["null"], + "level": "ERROR", + "propagate": False, + }, + # Do not email admins on request/server errors + "django.request": { + "handlers": ["null"], + "level": "ERROR", + "propagate": False, + }, + "django.server": { + "handlers": ["null"], + "level": "ERROR", + "propagate": False, + }, + }, +} + +# Email settings +if DEBUG: + EMAIL_BACKEND = "django.core.mail.backends.console.EmailBackend" + print("Using console email backend for development") + DEFAULT_FROM_EMAIL = "noreply@example.com" # Default for development + MAILGUN_SENDING_KEY = None # Not needed in development +else: + # Production email settings + EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend" + MAILGUN_SENDING_KEY = env.str("MAILGUN_SENDING_KEY", default="") + # Optional: set MAILGUN_DOMAIN explicitly; otherwise inferred from DEFAULT_FROM_EMAIL + MAILGUN_DOMAIN = env.str("MAILGUN_DOMAIN", default="") or None + DEFAULT_FROM_EMAIL = env.str("EMAIL_FROM", default="noreply@alphaonelabs.com") + EMAIL_FROM = os.getenv("EMAIL_FROM") + +# Stripe settings +STRIPE_PUBLISHABLE_KEY = env("STRIPE_PUBLISHABLE_KEY", default="") +STRIPE_SECRET_KEY = env("STRIPE_SECRET_KEY", default="") +STRIPE_WEBHOOK_SECRET = env("STRIPE_WEBHOOK_SECRET", default="") + +# Social Media and Content API Settings +MAILCHIMP_API_KEY = env.str("MAILCHIMP_API_KEY", default="") +MAILCHIMP_LIST_ID = env.str("MAILCHIMP_LIST_ID", default="") + +INSTAGRAM_ACCESS_TOKEN = env.str("INSTAGRAM_ACCESS_TOKEN", default="") +FACEBOOK_ACCESS_TOKEN = env.str("FACEBOOK_ACCESS_TOKEN", default="") + +GITHUB_ACCESS_TOKEN = env.str("GITHUB_ACCESS_TOKEN", default="") +GITHUB_REPO = env.str("GITHUB_REPO", default="AlphaOneLabs/education-website") + +YOUTUBE_API_KEY = env.str("YOUTUBE_API_KEY", default="") +YOUTUBE_CHANNEL_ID = env.str("YOUTUBE_CHANNEL_ID", default="") + +TWITTER_USERNAME = env.str("TWITTER_USERNAME", default="alphaonelabs") + +# Slack Integration +SLACK_WEBHOOK_URL = env.str("SLACK_WEBHOOK_URL", default="") + +# Slack webhook for email notifications +EMAIL_SLACK_WEBHOOK = env.str("EMAIL_SLACK_WEBHOOK", default=SLACK_WEBHOOK_URL) + +LANGUAGES = [ + ("en", "English"), + ("es", "Spanish"), + ("fr", "French"), + ("de", "German"), + ("zh-hans", "Simplified Chinese"), +] + +LOCALE_PATHS = [ + BASE_DIR / "locale", +] + +USE_L10N = True + +if os.environ.get("DATABASE_URL"): + DATABASES = {"default": env.db()} + + # Only add MySQL-specific options if using MySQL + if DATABASES["default"]["ENGINE"] == "django.db.backends.mysql": + DATABASES["default"]["OPTIONS"] = { + "charset": "utf8mb4", + "sql_mode": ( + "STRICT_TRANS_TABLES," + "NO_ZERO_IN_DATE," + "NO_ZERO_DATE," + "ERROR_FOR_DIVISION_BY_ZERO," + "NO_ENGINE_SUBSTITUTION" + ), + "init_command": "SET NAMES 'utf8mb4' COLLATE 'utf8mb4_unicode_ci'", + } + + # Google Cloud Storage settings for media files in production + if os.environ.get("GS_BUCKET_NAME"): + DEFAULT_FILE_STORAGE = "storages.backends.gcloud.GoogleCloudStorage" + GS_BUCKET_NAME = os.environ.get("GS_BUCKET_NAME") + GS_PROJECT_ID = os.environ.get("GS_PROJECT_ID") + + # Get service account file path from .env + service_account_filename = env.str("SERVICE_ACCOUNT_FILE") + SERVICE_ACCOUNT_FILE = os.path.join(BASE_DIR, service_account_filename) + if os.path.exists(SERVICE_ACCOUNT_FILE): + from google.oauth2 import service_account + + GS_CREDENTIALS = service_account.Credentials.from_service_account_file(SERVICE_ACCOUNT_FILE) + else: + print(f"Warning: Service account file not found at {SERVICE_ACCOUNT_FILE}") + GS_CREDENTIALS = None + + GS_DEFAULT_ACL = "publicRead" + GS_QUERYSTRING_AUTH = False + GS_LOCATION = "media" # Store files in a media directory in the bucket + + +# Admin URL Configuration +ADMIN_URL = env.str("ADMIN_URL", default="a-dmin-url123") + +# Markdownx configuration +MARKDOWNX_MARKDOWN_EXTENSIONS = [ + "markdown.extensions.extra", + "markdown.extensions.codehilite", + "markdown.extensions.tables", + "markdown.extensions.toc", +] + +MARKDOWNX_URLS_PATH = "/markdownx/markdownify/" +MARKDOWNX_UPLOAD_URLS_PATH = "/markdownx/upload/" +MARKDOWNX_MEDIA_PATH = "markdownx/" # Path within MEDIA_ROOT + 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zHi?&E%UgE%UJ8Qk%^z~(j%43LU*};T_TtBRWyfFr=z3m1R81U9Xoa)V`EclyFoUz0CY7(Za|2X zQ@C8gjq6E#g!Q7ETbs&(TO4$Bb!^myV+bIRODm3l|NVsq*z$v)mzNv;sI;^k?8Y2m zL8y(-mMzHC)Ere*Q~<}cE37GF4G`g9KRcV(5zC3rgtm)=v1S>JE?r=AOLH>sp~_AO zNJ`4j)YKzzV@G~oUMB1+#DU#X%LIZx7cZ~1=ESH^f2;w5ZC_!#5BY(i1B6vMZ9Z_o zAna#e()iD#PZOgkEw5t zfR0UOj-lfaraUOzA4dKMc>GM2B>&+65fz4q$C3l5&YY%G0r)~;Pktq7~BsiyY&0^$@tGUQAL$dCvlbrTpEXc%@iA|N%5*A3t(o&2TY5OFfH zva&Mt^70P&=ETWv*yv!8e8Kvo0|&9Cr4{uh1$cG{&(Lv*xb#OP?Bwawhxr*<)yf?C zD+&-%fi3j-MQ2K&hzcDJ?BY&(6whEU@|P1HkD^yo-Y4v0U~@C zs9V}{AKd3l^BqG`F-B+`jp<`Y*f(wf~Wf%KS(PMpNu>ki z-<_D4kO~b~YHVVqY7L06Aeot&ZBbE?>HYm=Q1Os(oNx9U{jv{}tiK-GHVlz4# z0>3$V`qRwp9I@oDN~At2nk;dDoJ4NIFD`Gtbt%7~utk5YzJrOeiKUj-&|<4n4H=p< zaV1mZFj#=vl@K3y7Yvo-+B>^zVHay4e;rHV0P{5 + + + + + + + + + + + {% block title %} Alpha One Labs - Open Source Education Platform {% endblock title %} + + + + + + + + + + + + {% block extra_head %} {% endblock extra_head %} + + + + {% if messages %} +
+ {% for message in messages %} +
+
+ {% if message.tags == 'error' %} + + {% elif message.tags == 'success' %} + + {% elif message.tags == 'warning' %} + + {% else %} + + {% endif %} +
+

{{ message }}

+ +
+ {% endfor %} +
+ {% endif %} {% block extra_body %} {% block content %} {% endblock content %} {% endblock extra_body %} {% block base_footer %} + + + {% endblock base_footer %} + + {% block extra_js %} {% endblock extra_js %} + + diff --git a/web/templates/index.html b/web/templates/index.html new file mode 100644 index 0000000..e7ddd89 --- /dev/null +++ b/web/templates/index.html @@ -0,0 +1,780 @@ +{% verbatim %} + + + + + + Alpha One Labs - Instrument + + + + + + + + + + + + + +
+
+
+
+
+ + Loading System +
+
+
+
+
+
+ +
+ + + + + + +{% endverbatim %} + diff --git a/web/urls.py b/web/urls.py new file mode 100644 index 0000000..bccb722 --- /dev/null +++ b/web/urls.py @@ -0,0 +1,16 @@ +from django.contrib import admin +from django.urls import include, path +from django.conf import settings +from django.conf.urls.static import static +from django.views.generic import TemplateView + +urlpatterns = [ + path("", TemplateView.as_view(template_name="index.html"), name="index"), + path("admin/", admin.site.urls), + path("virtual_lab/", include("web.virtual_lab.urls")), +] + +if settings.DEBUG: + urlpatterns.append(path("__reload__/", include("django_browser_reload.urls"))) + urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT) + urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) diff --git a/web/views.py b/web/views.py new file mode 100644 index 0000000..8dd972d --- /dev/null +++ b/web/views.py @@ -0,0 +1,8846 @@ +import calendar +import html +import ipaddress +import json +import logging +import os +import random +import re +import shutil +import socket +import string +import subprocess +import time +from collections import Counter, defaultdict +from datetime import datetime, timedelta +from decimal import Decimal +from urllib.parse import urlparse + +import requests +import stripe +import tweepy +from allauth.account.models import EmailAddress +from allauth.account.utils import send_email_confirmation +from django.conf import settings +from django.contrib import messages +from django.contrib.admin.utils import NestedObjects +from django.contrib.auth import get_user_model, login, logout +from django.contrib.auth.decorators import login_required, user_passes_test +from django.contrib.auth.mixins import LoginRequiredMixin, UserPassesTestMixin +from django.contrib.auth.models import User +from django.core.cache import cache +from django.core.exceptions import ObjectDoesNotExist +from django.core.mail import send_mail +from django.core.management import call_command +from django.core.paginator import Paginator +from django.db import IntegrityError, models, router, transaction +from django.db.models import Avg, Count, Q, Sum +from django.db.models.functions import Coalesce +from django.http import ( + FileResponse, + Http404, + HttpRequest, + HttpResponse, + HttpResponseBadRequest, + HttpResponseForbidden, + JsonResponse, +) +from django.shortcuts import get_object_or_404, redirect, render +from django.template.loader import render_to_string +from django.urls import NoReverseMatch, reverse, reverse_lazy +from django.utils import timezone +from django.utils.crypto import get_random_string +from django.utils.html import strip_tags +from django.utils.text import slugify +from django.utils.translation import gettext as _ +from django.views import generic +from django.views.decorators.clickjacking import xframe_options_exempt +from django.views.decorators.csrf import csrf_exempt, csrf_protect +from django.views.decorators.http import require_GET, require_POST +from django.views.generic import ( + CreateView, + DeleteView, + DetailView, + ListView, + UpdateView, +) + +from .calendar_sync import generate_google_calendar_link, generate_ical_feed, generate_outlook_calendar_link +from .decorators import teacher_required +from .forms import ( + AccountDeleteForm, + AwardAchievementForm, + BlogPostForm, + ChallengeSubmissionForm, + CourseForm, + CourseMaterialForm, + EducationalVideoForm, + FeedbackForm, + ForumCategoryForm, + ForumTopicForm, + GoodsForm, + GradeableLinkForm, + InviteStudentForm, + LearnForm, + LinkGradeForm, + MemeForm, + MessageTeacherForm, + NotificationPreferencesForm, + ProfileUpdateForm, + ProgressTrackerForm, + ReviewForm, + SessionForm, + StorefrontForm, + StudentEnrollmentForm, + StudyGroupForm, + SuccessStoryForm, + SurveyForm, + TeacherSignupForm, + TeachForm, + TeamGoalCompletionForm, + TeamGoalForm, + TeamInviteForm, + UserRegistrationForm, + VideoRequestForm, + VirtualClassroomCustomizationForm, + VirtualClassroomForm, +) +from .marketing import ( + generate_social_share_content, + get_course_analytics, + get_promotion_recommendations, + send_course_promotion_email, +) +from .models import ( + Achievement, + Badge, + BlogComment, + BlogPost, + CartItem, + Certificate, + Challenge, + ChallengeSubmission, + Choice, + Course, + CourseMaterial, + CourseProgress, + Discount, + Donation, + EducationalVideo, + Enrollment, + EventCalendar, + FeatureVote, + ForumCategory, + ForumReply, + ForumTopic, + ForumVote, + Goods, + GradeableLink, + LearningStreak, + LinkGrade, + MembershipPlan, + MembershipSubscriptionEvent, + Meme, + NoteHistory, + Notification, + NotificationPreference, + Order, + OrderItem, + Payment, + PeerConnection, + PeerMessage, + ProductImage, + Profile, + ProgressTracker, + Question, + Response, + Review, + ScheduledPost, + SearchLog, + Session, + SessionAttendance, + SessionEnrollment, + Storefront, + StudyGroup, + StudyGroupInvite, + Subject, + SuccessStory, + Survey, + TeamGoal, + TeamGoalMember, + TeamInvite, + TimeSlot, + UserBadge, + UserMembership, + VideoRequest, + VirtualClassroom, + VirtualClassroomCustomization, + VirtualClassroomParticipant, + WaitingRoom, + WebRequest, + default_valid_until, +) +from .notifications import ( + notify_session_reminder, + notify_teacher_new_enrollment, + notify_teacher_waiting_room_join, + notify_team_goal_completion, + notify_team_invite, + notify_team_invite_response, + send_enrollment_confirmation, +) +from .referrals import send_referral_reward_email +from .social import get_social_stats +from .utils import ( + cancel_subscription, + create_leaderboard_context, + create_subscription, + geocode_address, + get_cached_challenge_entries, + get_cached_leaderboard_data, + get_leaderboard, + get_or_create_cart, + get_user_points, + reactivate_subscription, + setup_stripe, +) + +logger = logging.getLogger(__name__) + +GOOGLE_CREDENTIALS_PATH = os.path.join(settings.BASE_DIR, "google_credentials.json") + +# Initialize Stripe +stripe.api_key = settings.STRIPE_SECRET_KEY + + +def sitemap(request): + return render(request, "sitemap.html") + + +def handle_referral(request, code): + """Handle referral link with the format /en/ref/CODE/ and redirect to homepage.""" + # Store referral code in session + request.session["referral_code"] = code + + # The WebRequestMiddleware will automatically log this request with the correct path + # containing the referral code, so we don't need to create a WebRequest manually + + # Redirect to homepage + return redirect("index") + + +def index(request): + """Homepage view.""" + from django.conf import settings + + # Store referral code in session if present in URL (for backward compatibility) + ref_code = request.GET.get("ref") + + if ref_code: + request.session["referral_code"] = ref_code + # The WebRequestMiddleware will track this request automatically + # with the query parameter in the path + + # Get top referrers - including both those with referrals and those with clicks + # First, find all referral codes that have clicks in WebRequest + referral_codes_with_clicks = ( + WebRequest.objects.filter(models.Q(path__contains="/ref/") | models.Q(path__contains="?ref=")) + .values_list("path", flat=True) + .distinct() + ) + + # Extract referral codes from the paths + active_referral_codes = set() + for path in referral_codes_with_clicks: + if "/ref/" in path: + # Format: /en/ref/CODE/ + parts = path.split("/ref/") + if len(parts) > 1: + code = parts[1].strip("/") + if code: + active_referral_codes.add(code) + elif "?ref=" in path: + # Format: /?ref=CODE or ?ref=CODE&other=params + parts = path.split("?ref=") + if len(parts) > 1: + code = parts[1].split("&")[0] # Handle additional parameters + if code: + active_referral_codes.add(code) + + # Get profiles with referrals and/or clicks + profiles_with_activity = Profile.objects.filter( + models.Q(referrals__isnull=False) # Has referrals + | models.Q(referral_code__in=active_referral_codes) # Has clicks + ).distinct() + + # Annotate with signups and enrollments + top_referrers = profiles_with_activity.annotate( + total_signups=models.Count("referrals", distinct=True), + total_enrollments=models.Count( + "referrals__user__enrollments", + filter=models.Q(referrals__user__enrollments__status="approved"), + distinct=True, + ), + ).order_by("-total_signups", "-total_enrollments")[ + :10 + ] # Get more and then sort by clicks + + # Add click counts manually since WebRequest.user is a CharField, not a ForeignKey + for referrer in top_referrers: + # Look for both new format /ref/CODE/ and old format ?ref=CODE + ref_code = referrer.referral_code + clicks = WebRequest.objects.filter( + models.Q(path__contains=f"/ref/{ref_code}/") | models.Q(path__contains=f"?ref={ref_code}") + ).count() + referrer.total_clicks = clicks + + # Re-sort to include click count in ranking + top_referrers = sorted( + top_referrers, key=lambda x: (x.total_signups, x.total_enrollments, x.total_clicks), reverse=True + )[ + :3 + ] # Take top 3 after sorting + + # Get current user's profile if authenticated + profile = request.user.profile if request.user.is_authenticated else None + + # Get recent courses + featured_courses = Course.objects.filter(status="published").order_by("-created_at")[:6] + + # Get featured goods + featured_goods = Goods.objects.filter(featured=True, is_available=True).order_by("-created_at")[:3] + + # Get current challenge + current_challenge_obj = Challenge.objects.filter( + start_date__lte=timezone.now(), end_date__gte=timezone.now() + ).first() + current_challenge = [current_challenge_obj] if current_challenge_obj else [] + + # Get latest blog post + latest_post = BlogPost.objects.filter(status="published").order_by("-published_at").first() + + # Get latest success story + latest_success_story = SuccessStory.objects.filter(status="published").order_by("-published_at").first() + + # Get last two waiting room requests + latest_waiting_room_requests = WaitingRoom.objects.filter(status="open").order_by("-created_at")[:2] + + # Global virtual classroom summary for homepage CTA + global_classroom = ( + VirtualClassroom.objects.filter(name__iexact="Global Virtual Classroom", course__isnull=True) + .order_by("-created_at") + .first() + ) + global_classroom_participants = 0 + if global_classroom: + global_classroom_participants = VirtualClassroomParticipant.objects.filter(classroom=global_classroom).count() + + # Get top latest 3 leaderboard users + try: + top_leaderboard_users, user_rank = get_leaderboard(request.user, period=None, limit=3) + except Exception: + logger = logging.getLogger(__name__) + logger.error("Error getting leaderboard data", exc_info=True) + top_leaderboard_users = [] + + # Get signup form if needed + form = None + if not request.user.is_authenticated or not request.user.profile.is_teacher: + form = TeacherSignupForm() + + # Get video count and subjects for the quick add video form + video_count = EducationalVideo.objects.count() + subjects = Subject.objects.all().order_by("order", "name") + + context = { + "profile": profile, + "featured_courses": featured_courses, + "featured_products": featured_goods, + "current_challenge": current_challenge, + "latest_post": latest_post, + "latest_success_story": latest_success_story, + "latest_waiting_room_requests": latest_waiting_room_requests, + "global_classroom": global_classroom, + "global_classroom_participants": global_classroom_participants, + "top_referrers": top_referrers, + "top_leaderboard_users": top_leaderboard_users, + "form": form, + "is_debug": settings.DEBUG, + "video_count": video_count, + "subjects": subjects, + } + if request.user.is_authenticated: + user_team_goals = ( + TeamGoal.objects.filter(Q(creator=request.user) | Q(members__user=request.user)) + .distinct() + .order_by("-created_at")[:3] + ) + + team_invites = TeamInvite.objects.filter(recipient=request.user, status="pending").select_related( + "goal", "sender" + ) + + context.update( + { + "user_team_goals": user_team_goals, + "team_invites": team_invites, + } + ) + + # Add courses that the user is teaching if they have any + teaching_courses = ( + Course.objects.filter(teacher=request.user) + .annotate( + view_count=Coalesce(Sum("web_requests__count"), 0), + enrolled_students=Count("enrollments", filter=Q(enrollments__status="approved")), + ) + .order_by("-created_at") + ) + + if teaching_courses.exists(): + context.update( + { + "teaching_courses": teaching_courses, + } + ) + return render(request, "index.html", context) + + +def signup_view(request): + """Custom signup view that properly handles referral codes.""" + if request.method == "POST": + form = UserRegistrationForm(request.POST, request=request) + if form.is_valid(): + form.save(request) + return redirect("account_email_verification_sent") + else: + # Initialize form with request to get referral code from session + form = UserRegistrationForm(request=request) + + # If there's no referral code in session but it's in the URL, store it + ref_code = request.GET.get("ref") + if ref_code and not request.session.get("referral_code"): + request.session["referral_code"] = ref_code + # Reinitialize form to pick up the new session value + form = UserRegistrationForm(request=request) + + return render( + request, + "account/signup.html", + { + "form": form, + "login_url": reverse("account_login"), + }, + ) + + +@login_required +def delete_account(request): + if request.method == "POST": + form = AccountDeleteForm(request.user, request.POST) + if form.is_valid(): + if request.POST.get("confirm"): + user = request.user + user.delete() + logout(request) + messages.success(request, _("Your account has been successfully deleted.")) + return redirect("index") + else: + form.add_error(None, _("You must confirm the account deletion.")) + else: + # Get all related objects that will be deleted + deleted_objects_collector = NestedObjects(using=router.db_for_write(request.user.__class__)) + deleted_objects_collector.collect([request.user]) + + # Transform the nested structure into something more user-friendly + to_delete = deleted_objects_collector.nested() + protected = deleted_objects_collector.protected + + # Format the collected objects in a user-friendly way + model_count = { + model._meta.verbose_name_plural: len(objs) for model, objs in deleted_objects_collector.model_objs.items() + } + + # Format as a list of tuples (model name, count) + formatted_count = [(name, count) for name, count in model_count.items()] + + form = AccountDeleteForm(request.user) + # Pass the deletion info to the template + return render( + request, + "account/delete_account.html", + {"form": form, "deleted_objects": to_delete, "protected": protected, "model_count": formatted_count}, + ) + + return render(request, "account/delete_account.html", {"form": form}) + + +@login_required +def delete_waiting_room(request, waiting_room_id): + """View for deleting a waiting room.""" + waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id) + + # Only allow creator to delete + if request.user != waiting_room.creator: + messages.error(request, "You don't have permission to delete this waiting room.") + return redirect("waiting_room_detail", waiting_room_id=waiting_room_id) + + if request.method == "POST": + waiting_room.delete() + messages.success(request, f"Waiting room '{waiting_room.title}' has been deleted.") + return redirect("waiting_room_list") + + return render(request, "waiting_room/confirm_delete.html", {"waiting_room": waiting_room}) + + +@login_required +def all_leaderboards(request): + """ + Display all leaderboard types on a single page. + """ + # Get cached leaderboard data or fetch fresh data + global_entries, global_rank = get_cached_leaderboard_data(request.user, None, 10, "global_leaderboard", 60 * 60) + weekly_entries, weekly_rank = get_cached_leaderboard_data(request.user, "weekly", 10, "weekly_leaderboard", 60 * 15) + monthly_entries, monthly_rank = get_cached_leaderboard_data( + request.user, "monthly", 10, "monthly_leaderboard", 60 * 30 + ) + + # Get user points and challenge entries if authenticated non-teacher + challenge_entries = [] + user_points = None + + if request.user.is_authenticated and not request.user.profile.is_teacher: + user_points = get_user_points(request.user) + challenge_entries = get_cached_challenge_entries() + + context = create_leaderboard_context( + global_entries, + weekly_entries, + monthly_entries, + challenge_entries, + global_rank, + weekly_rank, + monthly_rank, + user_points["total"], + user_points["weekly"], + user_points["monthly"], + ) + return render(request, "leaderboards/leaderboards.html", context) + else: + context = create_leaderboard_context( + global_entries, + weekly_entries, + monthly_entries, + [], + global_rank, + weekly_rank, + monthly_rank, + None, + None, + None, + ) + return render(request, "leaderboards/leaderboards.html", context) + + +@login_required +def profile(request): + if request.method == "POST": + form = ProfileUpdateForm(request.POST, request.FILES, instance=request.user) + if form.is_valid(): + form.save() # Save the form data + request.user.profile.refresh_from_db() # Refresh to load updated profile + messages.success(request, "Profile updated successfully!") + return redirect("profile") + else: + for field, errors in form.errors.items(): + for error in errors: + messages.error(request, f"Error in {field}: {error}") + else: + form = ProfileUpdateForm(instance=request.user) + + badges = UserBadge.objects.filter(user=request.user).select_related("badge") + + context = { + "form": form, + "badges": badges, + } + + # Teacher-specific stats + if request.user.profile.is_teacher: + courses = Course.objects.filter(teacher=request.user) + total_students = sum(course.enrollments.filter(status="approved").count() for course in courses) + avg_rating = 0 + total_ratings = 0 + for course in courses: + course_ratings = course.reviews.all() + if course_ratings: + avg_rating += sum(review.rating for review in course_ratings) + total_ratings += len(course_ratings) + avg_rating = round(avg_rating / total_ratings, 1) if total_ratings > 0 else 0 + context.update( + { + "courses": courses, + "total_students": total_students, + "avg_rating": avg_rating, + } + ) + # Student-specific stats + else: + enrollments = Enrollment.objects.filter(student=request.user).select_related("course") + completed_courses = enrollments.filter(status="completed").count() + total_progress = 0 + progress_count = 0 + for enrollment in enrollments: + progress, _ = CourseProgress.objects.get_or_create(enrollment=enrollment) + if progress.completion_percentage is not None: + total_progress += progress.completion_percentage + progress_count += 1 + avg_progress = round(total_progress / progress_count) if progress_count > 0 else 0 + context.update( + { + "enrollments": enrollments, + "completed_courses": completed_courses, + "avg_progress": avg_progress, + } + ) + + # Get created calendars if applicable + created_calendars = request.user.created_calendars.prefetch_related("time_slots").order_by("-created_at") + context["created_calendars"] = created_calendars + + # *** Add Discount Codes *** + discount_codes = Discount.objects.filter(user=request.user, used=False, valid_until__gte=timezone.now()) + context["discount_codes"] = discount_codes + + return render(request, "profile.html", context) + + +@login_required +def create_course(request): + if request.method == "POST": + form = CourseForm(request.POST, request.FILES) + if form.is_valid(): + course = form.save(commit=False) + course.teacher = request.user + course.status = "published" # Set status to published + course.save() + form.save_m2m() # Save many-to-many relationships + + # Handle waiting room if course was created from one + if "waiting_room_data" in request.session: + waiting_room = get_object_or_404(WaitingRoom, id=request.session["waiting_room_data"]["id"]) + + # Update waiting room status and link to course + waiting_room.status = "fulfilled" + waiting_room.fulfilled_course = course + waiting_room.save(update_fields=["status", "fulfilled_course"]) + + # Send notifications to all participants + for participant in waiting_room.participants.all(): + messages.success( + request, + f"A new course matching your request has been created: {course.title}", + extra_tags=f"course_{course.slug}", + ) + + # Clear waiting room data from session + del request.session["waiting_room_data"] + + # Redirect back to waiting room to show the update + return redirect("waiting_room_detail", waiting_room_id=waiting_room.id) + + return redirect("course_detail", slug=course.slug) + else: + form = CourseForm() + + return render(request, "courses/create.html", {"form": form}) + + +@login_required +@teacher_required +def create_course_from_waiting_room(request, waiting_room_id): + waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id) + + # Ensure waiting room is open + if waiting_room.status != "open": + messages.error(request, "This waiting room is no longer open.") + return redirect("waiting_room_detail", waiting_room_id=waiting_room_id) + + # Store waiting room data in session for validation + request.session["waiting_room_data"] = { + "id": waiting_room.id, + "subject": waiting_room.subject.strip().lower(), + "topics": [t.strip().lower() for t in waiting_room.topics.split(",") if t.strip()], + } + + # Redirect to regular course creation form + return redirect(reverse("create_course")) + + +@login_required +@teacher_required +def add_featured_review(request, slug, review_id): + # Get the course and review + course = get_object_or_404(Course, slug=slug) + review = get_object_or_404(Review, id=review_id, course=course) + + # Check if the user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can manage featured reviews.") + return redirect(reverse("course_detail", kwargs={"slug": slug})) + + # Set the is_featured field to True + review.is_featured = True + review.save() + messages.success(request, "Review has been featured.") + + # Redirect to the course detail page + url = reverse("course_detail", kwargs={"slug": slug}) + return redirect(f"{url}#course_reviews") + + +@login_required +@teacher_required +def remove_featured_review(request, slug, review_id): + # Get the course and review + course = get_object_or_404(Course, slug=slug) + review = get_object_or_404(Review, id=review_id, course=course) + + # Check if the user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can manage featured reviews.") + return redirect(reverse("course_detail", kwargs={"slug": slug})) + + # Set the is_featured field to False + review.is_featured = False + review.save() + + # Redirect to the course detail page + url = reverse("course_detail", kwargs={"slug": slug}) + return redirect(f"{url}#course_reviews") + + +@login_required +def edit_review(request, slug, review_id): + course = get_object_or_404(Course, slug=slug) + review = get_object_or_404(Review, id=review_id, course__slug=slug) + + # Security check - only allow editing own reviews + if request.user.id != review.student.id: + messages.error(request, "You can only edit your own reviews.") + return redirect("course_detail", slug=slug) + + if request.method == "POST": + form = ReviewForm(request.POST, instance=review) + if form.is_valid(): + review = form.save(commit=False) + review.save() + messages.success(request, "Your review has been updated.") + url = reverse("course_detail", kwargs={"slug": slug}) + return redirect(f"{url}#course_reviews") + else: + form = ReviewForm(instance=review) + + context = { + "form": form, + "course": course, + "review": review, + "action": "Edit", + } + return render(request, "courses/edit_or_add_review.html", context) + + +@login_required +def delete_review(request, slug, review_id): + review = get_object_or_404(Review, id=review_id, course__slug=slug) + + # Security check - only allow deleting own reviews + if request.user.id != review.student.id: + messages.error(request, "You can only delete your own reviews.") + else: + review.delete() + messages.success(request, "Your review has been deleted.") + + url = reverse("course_detail", kwargs={"slug": slug}) + return redirect(f"{url}#course_reviews") + + +def course_detail(request, slug): + course = get_object_or_404(Course, slug=slug) + sessions = course.sessions.all().order_by("start_time") + now = timezone.now() + is_teacher = request.user == course.teacher + completed_sessions = [] + # Check if user is the teacher of this course + + # Get enrollment if user is authenticated + enrollment = None + is_enrolled = False + if request.user.is_authenticated: + enrollment = Enrollment.objects.filter(course=course, student=request.user, status="approved").first() + is_enrolled = enrollment is not None + if enrollment: + # Get completed sessions through SessionAttendance + completed_sessions = SessionAttendance.objects.filter( + student=request.user, session__course=course, status="completed" + ).values_list("session__id", flat=True) + completed_sessions = course.sessions.filter(id__in=completed_sessions) + + # Get attendance data for all enrolled students + student_attendance = {} + total_sessions = sessions.count() + + if is_teacher or is_enrolled: + for enroll in course.enrollments.all(): + attended_sessions = SessionAttendance.objects.filter( + student=enroll.student, session__course=course, status__in=["present", "late"] + ).count() + student_attendance[enroll.student.id] = {"attended": attended_sessions, "total": total_sessions} + + # Mark past sessions as completed for display + past_sessions = sessions.filter(end_time__lt=now) + future_sessions = sessions.filter(end_time__gte=now) + sessions = list(future_sessions) + list(past_sessions) # Show future sessions first + + # Calendar data + today = timezone.now().date() + + # Get the requested month from query parameters, default to current month + try: + year = int(request.GET.get("year", today.year)) + month = int(request.GET.get("month", today.month)) + current_month = today.replace(year=year, month=month, day=1) + except (ValueError, TypeError): + current_month = today.replace(day=1) + + # Calculate previous and next month + if current_month.month == 1: + prev_month = current_month.replace(year=current_month.year - 1, month=12) + else: + prev_month = current_month.replace(month=current_month.month - 1) + + if current_month.month == 12: + next_month = current_month.replace(year=current_month.year + 1, month=1) + else: + next_month = current_month.replace(month=current_month.month + 1) + + # Get the calendar for current month + cal = calendar.monthcalendar(current_month.year, current_month.month) + + # Get all session dates for this course in current month + session_dates = set( + session.start_time.date() + for session in sessions + if session.start_time.year == current_month.year and session.start_time.month == current_month.month + ) + + # Prepare calendar weeks data + calendar_weeks = [] + for week in cal: + calendar_week = [] + for day in week: + if day == 0: + calendar_week.append({"date": None, "in_month": False, "has_session": False}) + else: + date = current_month.replace(day=day) + calendar_week.append({"date": date, "in_month": True, "has_session": date in session_dates}) + calendar_weeks.append(calendar_week) + + # Check if the current user has already reviewed this course + user_review = None + if request.user.is_authenticated: + user_review = Review.objects.filter(student=request.user, course=course).first() + + # Get all reviews That not featured for this course + reviews = course.reviews.filter(is_featured=False).order_by("-created_at") + + # Get the featured review + featured_review = Review.objects.filter(is_featured=True, course=course) + + # Get all reviews sum + reviews_num = reviews.count() + featured_review.count() + + # Calculate rating distribution for visualization + rating_counts = Review.objects.filter(course=course).values("rating").annotate(count=Count("id")) + rating_distribution = {1: 0, 2: 0, 3: 0, 4: 0, 5: 0} + for item in rating_counts: + rating_distribution[item["rating"]] = item["count"] + + # Get next session for waiting room functionality + next_session = None + user_in_session_waiting_room = False + + if request.user.is_authenticated: + # Get the next upcoming session for this course + next_session = course.sessions.filter(start_time__gt=timezone.now()).order_by("start_time").first() + + # Check if user is in the session waiting room + try: + session_waiting_room = WaitingRoom.objects.get(course=course, status="open") + user_in_session_waiting_room = request.user in session_waiting_room.participants.all() + except WaitingRoom.DoesNotExist: + user_in_session_waiting_room = False + + # Build the absolute discount URL using the discount view's URL name. + from urllib.parse import urlencode + + discount_relative = reverse("apply_discount_via_referrer") + discount_params = urlencode({"course_id": course.id}) + discount_url = request.build_absolute_uri(f"{discount_relative}?{discount_params}") + + # Get active virtual classroom for the course + virtual_classroom = course.virtual_classrooms.filter(is_active=True).first() + + context = { + "course": course, + "sessions": sessions, + "now": now, + "today": today, + "is_teacher": is_teacher, + "is_enrolled": is_enrolled, + "enrollment": enrollment, + "completed_sessions": completed_sessions, + "calendar_weeks": calendar_weeks, + "current_month": current_month, + "prev_month": prev_month, + "next_month": next_month, + "student_attendance": student_attendance, + "completed_enrollment_count": course.enrollments.filter(status="completed").count(), + "in_progress_enrollment_count": course.enrollments.filter(status="in_progress").count(), + "featured_review": featured_review, + "reviews": reviews, + "user_review": user_review, + "rating_distribution": rating_distribution, + "reviews_num": reviews_num, + "discount_url": discount_url, + "virtual_classroom": virtual_classroom, + "next_session": next_session, + "user_in_session_waiting_room": user_in_session_waiting_room, + } + + return render(request, "courses/detail.html", context) + + +@login_required +def enroll_course(request, course_slug): + """Enroll in a course and handle referral rewards if applicable.""" + course = get_object_or_404(Course, slug=course_slug) + + # Check if user is already enrolled + if request.user.enrollments.filter(course=course).exists(): + messages.warning(request, "You are already enrolled in this course.") + return redirect("course_detail", slug=course_slug) + + # Check if course is full + if course.max_students and course.enrollments.count() >= course.max_students: + messages.error(request, "This course is full.") + return redirect("course_detail", slug=course_slug) + + # Check if this is the user's first enrollment and if they were referred + if not Enrollment.objects.filter(student=request.user).exists(): + if hasattr(request.user.profile, "referred_by") and request.user.profile.referred_by: + referrer = request.user.profile.referred_by + if not referrer.is_teacher: # Regular users get reward on first course enrollment + referrer.add_referral_earnings(5) + send_referral_reward_email(referrer.user, request.user, 5, "enrollment") + + # For free courses, create approved enrollment immediately + if course.price == 0: + enrollment = Enrollment.objects.create(student=request.user, course=course, status="approved") + # Send notifications for free courses + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + messages.success(request, "You have successfully enrolled in this free course.") + return redirect("course_detail", slug=course_slug) + else: + # For paid courses, create pending enrollment + enrollment = Enrollment.objects.create(student=request.user, course=course, status="pending") + messages.info(request, "Please complete the payment process to enroll in this course.") + return redirect("course_detail", slug=course_slug) + + +@login_required +def add_session(request, slug): + course = Course.objects.get(slug=slug) + if request.user != course.teacher: + messages.error(request, "Only the course teacher can add sessions!") + return redirect("course_detail", slug=slug) + + if request.method == "POST": + form = SessionForm(request.POST) + if form.is_valid(): + session = form.save(commit=False) + session.course = course + session.save() + # Send session notifications to enrolled students + notify_session_reminder(session) + messages.success(request, "Session added successfully!") + return redirect("course_detail", slug=slug) + else: + form = SessionForm() + + return render(request, "courses/session_form.html", {"form": form, "course": course, "is_edit": False}) + + +@login_required +def add_review(request, slug): + course = Course.objects.get(slug=slug) + student = request.user + + if not request.user.enrollments.filter(course=course).exists(): + messages.error(request, "Only enrolled students can review the course!") + return redirect("course_detail", slug=slug) + + if request.method == "POST": + form = ReviewForm(request.POST) + if form.is_valid(): + if Review.objects.filter(student=student, course=course).exists(): + messages.error(request, "You have already reviewed this course.") + return redirect("course_detail", slug=slug) + review = form.save(commit=False) + review.student = student + review.course = course + review.save() + messages.success(request, "Review added successfully!") + url = reverse("course_detail", kwargs={"slug": slug}) + return redirect(f"{url}#course_reviews") + else: + form = ReviewForm() + + return render(request, "courses/edit_or_add_review.html", {"form": form, "course": course, "action": "Add"}) + + +@login_required +def delete_course(request, slug): + """Handle course deletion, including image deletion.""" + course = get_object_or_404(Course, slug=slug) + + # Ensure only the course teacher can delete the course + if request.user != course.teacher: + messages.error(request, "You are not authorized to delete this course.") + return redirect("course_detail", slug=slug) + + if request.method == "POST": + + # Delete the course --> this automatically deletes the image too + course.delete() + messages.success(request, "Course deleted successfully!") + return redirect("profile") # Redirect to the profile page or another success page + + return render(request, "courses/delete_confirm.html", {"course": course}) + + +@csrf_exempt +def github_update(request): + """GitHub webhook endpoint to trigger a lightweight deploy. + + Hardening applied: + - Require POST. + - Validate X-Hub-Signature-256 using shared secret env var GITHUB_WEBHOOK_SECRET. + - Ignore unsupported events (only push by default). + - Run a safe pull + dependency install + migrate + collectstatic via a minimal bash snippet. + - Send concise status updates to Slack; avoid leaking secrets. + + NOTE: Full provisioning (packages, DB grants, etc.) still belongs to Ansible. + This endpoint just brings the already‑provisioned instance up to latest commit. + """ + if request.method != "POST": + return HttpResponseBadRequest("POST required") + + secret = getattr(settings, "GITHUB_WEBHOOK_SECRET", None) + signature = request.META.get("HTTP_X_HUB_SIGNATURE_256") + body = request.body + + if secret: + import hashlib + import hmac + + expected = "sha256=" + hmac.new(secret.encode(), body, hashlib.sha256).hexdigest() + if not signature or not hmac.compare_digest(expected, signature): + send_slack_message("GitHub webhook signature mismatch") + return HttpResponseForbidden("Invalid signature") + else: + # If no secret configured, refuse (better to explicitly set one) + return HttpResponseForbidden("Webhook secret not configured") + + event = request.META.get("HTTP_X_GITHUB_EVENT", "") + if event not in {"push"}: + return HttpResponse("Ignored event", status=202) + + repo_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) + venv_python = os.path.join(repo_dir, "venv", "bin", "python") + venv_pip = os.path.join(repo_dir, "venv", "bin", "pip") + log_lines = [] + + # Resolve git binary explicitly since systemd service Environment may override PATH. + import shutil + + git_bin = shutil.which("git") or "/usr/bin/git" + if not os.path.exists(git_bin): + msg = f"Git binary not found at resolved path: {git_bin}. Aborting lightweight deploy." + send_slack_message(msg) + return HttpResponse(status=500, content=msg) + + def run_cmd(cmd): + proc = subprocess.run(cmd, cwd=repo_dir, capture_output=True, text=True) + summary = f"$ {' '.join(cmd)}\nrc={proc.returncode}\nstdout={proc.stdout[-400:]}\nstderr={proc.stderr[-400:]}" + log_lines.append(summary) + return proc.returncode == 0 + + poetry_bin = os.path.join(repo_dir, "venv", "bin", "poetry") + steps = [ + [git_bin, "fetch", "--all", "--prune"], + [git_bin, "reset", "--hard", "origin/main"], + [venv_pip, "install", "--upgrade", "pip", "wheel"], + [venv_pip, "install", "poetry==1.8.3"], + [poetry_bin, "config", "virtualenvs.create", "false", "--local"], + [poetry_bin, "install", "--only", "main", "--no-interaction", "--no-ansi"], + [venv_python, "manage.py", "migrate", "--noinput"], + [venv_python, "manage.py", "collectstatic", "--noinput"], + ] + + ok = True + for step in steps: + try: + if not run_cmd(step): + ok = False + break + except FileNotFoundError as fe: + # Capture explicit binary not found errors, send Slack, abort early. + err_msg = f"Webhook deploy step failed (missing binary): {fe}" + log_lines.append(err_msg) + send_slack_message(err_msg) + ok = False + break + + # Always attempt a reload so code changes take effect (application systemd unit) + subprocess.run(["/bin/systemctl", "restart", "education-website"], capture_output=True) + + # Slack summary (truncate to avoid long messages) + slack_msg = ( + ("Deploy success" if ok else "Deploy FAILED") + + " (github webhook)\n" + + "\n---\n" + + "\n---\n".join(line[:600] for line in log_lines[:4]) + ) + send_slack_message(slack_msg[:3500]) + + if ok: + return HttpResponse("OK") + return HttpResponse(status=500, content="Deploy failed; see logs") + + +def send_slack_message(message): + webhook_url = os.getenv("SLACK_WEBHOOK_URL") + if not webhook_url: + print("Warning: SLACK_WEBHOOK_URL not configured") + return + + payload = {"text": f"```{message}```"} + try: + response = requests.post(webhook_url, json=payload) + response.raise_for_status() # Raise exception for bad status codes + except Exception: + logger.error("Failed to send Slack message", exc_info=True) + + +def get_wsgi_last_modified_time(): + try: + return time.ctime(os.path.getmtime(settings.PA_WSGI)) + except Exception: + return "Unknown" + + +def subjects(request): + return render(request, "subjects.html") + + +def about(request): + return render(request, "about.html") + + +def waiting_rooms(request): + # Get open waiting rooms + open_rooms = WaitingRoom.objects.filter(status="open").order_by("-created_at") + + # Get fulfilled waiting rooms (ones that have associated courses) + fulfilled_rooms = WaitingRoom.objects.filter(status="fulfilled").order_by("-created_at") + + # Get rooms created by the user + user_created_rooms = ( + WaitingRoom.objects.filter(creator=request.user).order_by("-created_at") + if request.user.is_authenticated + else [] + ) + + # Get rooms the user has joined + user_joined_rooms = ( + WaitingRoom.objects.filter(participants=request.user).order_by("-created_at") + if request.user.is_authenticated + else [] + ) + + # Get topics for each room + room_topics = {} + all_rooms = list(open_rooms) + list(fulfilled_rooms) + list(user_created_rooms) + list(user_joined_rooms) + for room in all_rooms: + # Split topics string into a list + room_topics[room.id] = [t.strip() for t in room.topics.split(",")] if room.topics else [] + + context = { + "open_rooms": open_rooms, + "fulfilled_rooms": fulfilled_rooms, + "user_created_rooms": user_created_rooms, + "user_joined_rooms": user_joined_rooms, + "room_topics": room_topics, + } + + return render(request, "waiting_rooms.html", context) + + +def learn(request): + if request.method == "POST": + form = LearnForm(request.POST) + if form.is_valid(): + # Create waiting room + waiting_room = form.save(commit=False) + waiting_room.status = "open" # Set initial status + waiting_room.creator = request.user # Set the creator + + # Get topics from form and save as comma-separated string + topics = form.cleaned_data.get("topics", "") + if isinstance(topics, list): + topics = ", ".join(topics) + waiting_room.topics = topics + + waiting_room.save() + + # Redirect to waiting rooms page + return redirect("waiting_rooms") + + # Get form data + title = form.cleaned_data["title"] + description = form.cleaned_data["description"] + subject = form.cleaned_data["subject"] + topics = form.cleaned_data["topics"] + + # Prepare email content + email_subject = f"New Learning Request: {title}" + email_body = render_to_string( + "emails/learn_interest.html", + { + "title": title, + "description": description, + "subject": subject, + "topics": topics, + "user": request.user.username, + "waiting_room_id": waiting_room.id, + }, + ) + + # Send email + try: + send_mail( + email_subject, + email_body, + settings.DEFAULT_FROM_EMAIL, + [settings.DEFAULT_FROM_EMAIL], + html_message=email_body, + fail_silently=False, + ) + messages.success( + request, + "Thank you for your learning request!", + ) + return redirect("waiting_rooms") + except Exception: + logger = logging.getLogger(__name__) + logger.exception("Error sending email") + messages.error(request, "Sorry, there was an error sending your inquiry. Please try again later.") + else: + initial_data = {} + + # Handle query parameters + query = request.GET.get("query", "") + subject_param = request.GET.get("subject", "") + level = request.GET.get("level", "") + + # Try to match subject + if subject_param: + try: + subject = Subject.objects.get(name=subject_param) + initial_data["subject"] = subject.id + except Subject.DoesNotExist: + # Optionally, you could add the subject name to the description + initial_data["description"] = f"Looking for courses in {subject_param}" + + # If you want to include other parameters in the description + if query or level: + title_parts = [] + description_parts = [] + if query: + title_parts.append(f"{query}") + if level: + description_parts.append(f"Level: {level}") + + if "description" not in initial_data: + initial_data["title"] = " | ".join(title_parts) + else: + initial_data["description"] += " | " + " | ".join(description_parts) + + form = LearnForm(initial=initial_data) + return render(request, "learn.html", {"form": form}) + + +def teach(request): + """Handles the course creation process for both authenticated and unauthenticated users.""" + if request.method == "POST": + form = TeachForm(request.POST, request.FILES, user=request.user) + if form.is_valid(): + # Extract cleaned data + email = form.cleaned_data.get("email", None) + if email is None and request.user.is_authenticated: + email = request.user.email + course_title = form.cleaned_data["course_title"] + course_description = form.cleaned_data["course_description"] + course_image = form.cleaned_data.get("course_image") + preferred_session_times = form.cleaned_data["preferred_session_times"] + _ = form.cleaned_data.get("flexible_timing", False) + + # Determine the user for the course + user = None + is_new_user = False + + if request.user.is_authenticated: + # For authenticated users, always use the logged-in user + user = request.user + + # Backend validation: Check for duplicate course titles for the logged-in user + if Course.objects.filter(title__iexact=course_title, teacher=user).exists(): + form.add_error("course_title", "You already have a course with this title.") + return render(request, "teach.html", {"form": form}) + else: + # For unauthenticated users, check if the email exists or create a new user + try: + user = User.objects.get(email=email) + # User exists but isn't logged in; check if email is verified + email_address = EmailAddress.objects.filter(user=user, email=email, primary=True).first() + if email_address and email_address.verified: + messages.info( + request, + "An account with this email exists. Please login to finalize your course.", + ) + else: + # Email not verified, resend verification email + send_email_confirmation(request, user, signup=False) + messages.info( + request, + "An account with this email exists. Please verify your email to continue.", + ) + except User.DoesNotExist: + # Create a new user account + with transaction.atomic(): + # Generate a unique username + email_prefix = email.split("@")[0] + username = email_prefix + counter = 1 + while User.objects.filter(username=username).exists(): + username = f"{email_prefix}_{get_random_string(4)}_{counter}" + counter += 1 + + temp_password = get_random_string(length=8) + + # Create user with temporary password + user = User.objects.create_user(username=username, email=email, password=temp_password) + + # Update profile to be a teacher + profile, created = Profile.objects.get_or_create(user=user) + profile.is_teacher = True + profile.save() + + # Add email address for allauth verification + EmailAddress.objects.create(user=user, email=email, primary=True, verified=False) + + # Send verification email via allauth + send_email_confirmation(request, user, signup=True) + # Send welcome email with username, email, and temp password + try: + send_welcome_teach_course_email(request, user, temp_password) + except Exception: + messages.error(request, "Failed to send welcome email. Please try again.") + return render(request, "teach.html", {"form": form}) + + is_new_user = True + + # Backend validation: Check for duplicate course titles for unauthenticated users + if Course.objects.filter(title__iexact=course_title, teacher=user).exists(): + email_address = EmailAddress.objects.filter(user=user, email=email, primary=True).first() + if email_address and not email_address.verified: + # If the user is unverified, delete the existing draft and allow a new one + Course.objects.filter(title__iexact=course_title, teacher=user).delete() + else: + form.add_error("course_title", "You already have a course with this title.") + return render(request, "teach.html", {"form": form}) + + # Create a draft course + course = Course.objects.create( + title=course_title, + description=course_description, + teacher=user, + price=0, + max_students=12, + status="draft", + subject=Subject.objects.first() or Subject.objects.create(name="General"), + level="beginner", + ) + + # Handle course image if uploaded + if course_image: + course.image = course_image + course.save() + + # Create initial session if preferred time provided + if preferred_session_times: + Session.objects.create( + course=course, + title=f"{course_title} - Session 1", + description="First session of the course", + start_time=preferred_session_times, + end_time=preferred_session_times + timezone.timedelta(hours=1), + is_virtual=True, + ) + + # Handle redirection based on authentication status + if request.user.is_authenticated: + # If authenticated, mark as teacher and redirect to course setup + request.user.profile.is_teacher = True + request.user.profile.save() + messages.success( + request, f"Welcome! Your course '{course_title}' has been created. Please complete your setup." + ) + return redirect("course_detail", slug=course.slug) + else: + # Store course primary key in session for post-verification redirect + request.session["pending_course_id"] = course.pk + if is_new_user: + messages.success( + request, + "Your course has been created! " + "Please check your email for your username, password, and verification link to continue.", + ) + return redirect("account_email_verification_sent") + else: + # For existing users, redirect to login page + return redirect("account_login") + + else: + initial_data = {} + if request.GET.get("subject"): + initial_data["course_title"] = request.GET.get("subject") + form = TeachForm(initial=initial_data, user=request.user) + + return render(request, "teach.html", {"form": form}) + + +def send_welcome_teach_course_email(request, user, temp_password): + """Send welcome email with account and password setup instructions.""" + reset_url = request.build_absolute_uri(reverse("account_reset_password")) + + email_context = {"user": user, "reset_url": reset_url, "temp_password": temp_password} + + html_message = render_to_string("emails/welcome_teach_course.html", email_context) + text_message = render_to_string("emails/welcome_teach_course.txt", email_context) + + send_mail( + subject="Welcome to Your New Teaching Account.", + message=text_message, + html_message=html_message, + from_email=settings.DEFAULT_FROM_EMAIL, + recipient_list=[user.email], + fail_silently=False, + ) + + +def course_search(request): + query = request.GET.get("q", "") + subject = request.GET.get("subject", "") + level = request.GET.get("level", "") + min_price = request.GET.get("min_price", "") + max_price = request.GET.get("max_price", "") + sort_by = request.GET.get("sort", "-created_at") + + courses = Course.objects.filter(status="published") + + # Apply filters + if query: + courses = courses.filter( + Q(title__icontains=query) + | Q(description__icontains=query) + | Q(tags__icontains=query) + | Q(learning_objectives__icontains=query) + | Q(prerequisites__icontains=query) + | Q(teacher__username__icontains=query) + | Q(teacher__first_name__icontains=query) + | Q(teacher__last_name__icontains=query) + | Q(teacher__profile__expertise__icontains=query) + ) + + if subject: + # Handle subject filtering based on whether it's an ID (number) or a string (slug/name) + try: + # Check if subject is an integer ID + subject_id = int(subject) + courses = courses.filter(subject_id=subject_id) + except ValueError: + # If not an integer, treat as a slug or name + courses = courses.filter(Q(subject__slug=subject) | Q(subject__name__iexact=subject)) + + if level: + courses = courses.filter(level=level) + + if min_price: + try: + min_price = float(min_price) + courses = courses.filter(price__gte=min_price) + except ValueError: + pass + + if max_price: + try: + max_price = float(max_price) + courses = courses.filter(price__lte=max_price) + except ValueError: + pass + + # Annotate with average rating for sorting + courses = courses.annotate( + avg_rating=Avg("reviews__rating"), + total_students=Count("enrollments", filter=Q(enrollments__status="approved")), + ) + + # Apply sorting + if sort_by == "price": + courses = courses.order_by("price", "-avg_rating") + elif sort_by == "-price": + courses = courses.order_by("-price", "-avg_rating") + elif sort_by == "title": + courses = courses.order_by("title") + elif sort_by == "rating": + courses = courses.order_by("-avg_rating", "-total_students") + else: # Default to newest + courses = courses.order_by("-created_at") + + # Get total count before pagination + total_results = courses.count() + + # Log the search (only if query is not blank or filters are applied) + if (query and query.strip()) or subject or level or min_price or max_price: + filters = { + "subject": subject, + "level": level, + "min_price": min_price, + "max_price": max_price, + "sort_by": sort_by, + } + SearchLog.objects.create( + query=query.strip() if query else "", + results_count=total_results, + user=request.user if request.user.is_authenticated else None, + filters_applied=filters, + search_type="course", + ) + + # Pagination + paginator = Paginator(courses, 12) # Show 12 courses per page + page_number = request.GET.get("page", 1) + page_obj = paginator.get_page(page_number) + is_teacher = getattr(getattr(request.user, "profile", None), "is_teacher", False) + + # initialize the user courses if founded + user_courses = set() + + # Get authenticated users courses + if request.user.is_authenticated: + if request.user.profile.is_teacher: + teacher_courses = list(Course.objects.filter(teacher=request.user)) + # Create a set of titles + user_courses = {course.title for course in teacher_courses} + else: + enrollments = Enrollment.objects.filter(student=request.user).select_related("course") + # Create a set of titles + user_courses = {course.course.title for course in enrollments} + + # Get dynamic subject choices from courses that are published + available_subjects = ( + Subject.objects.filter(courses__status="published") + .distinct() + .order_by("order", "name") + .values_list("slug", "name") + ) + + context = { + "page_obj": page_obj, + "query": query, + "subject": subject, + "level": level, + "min_price": min_price, + "max_price": max_price, + "sort_by": sort_by, + "subject_choices": list(available_subjects), + "level_choices": Course._meta.get_field("level").choices, + "total_results": total_results, + "is_teacher": is_teacher, + "user_courses": user_courses, + } + + return render(request, "courses/search.html", context) + + +@login_required +def create_payment_intent(request, slug): + """Create a payment intent for Stripe.""" + course = get_object_or_404(Course, slug=slug) + + # Prevent creating payment intents for free courses + if course.price == 0: + # Find the enrollment and update its status to approved if it's pending + enrollment = get_object_or_404(Enrollment, student=request.user, course=course) + if enrollment.status == "pending": + enrollment.status = "approved" + enrollment.save() + + # Send notifications + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + + return JsonResponse({"free_course": True, "message": "Enrollment approved for free course"}) + + # Ensure user has a pending enrollment + enrollment = get_object_or_404(Enrollment, student=request.user, course=course, status="pending") + + # Validate price is greater than zero for Stripe + if course.price <= 0: + enrollment.status = "approved" + enrollment.save() + + # Send notifications + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + + return JsonResponse({"free_course": True, "message": "Enrollment approved for free course"}) + + try: + # Create a PaymentIntent with the order amount and currency + intent = stripe.PaymentIntent.create( + amount=int(course.price * 100), # Convert to cents + currency="usd", + metadata={ + "course_id": course.id, + "user_id": request.user.id, + }, + ) + return JsonResponse({"clientSecret": intent.client_secret}) + except stripe.error.StripeError: + logger.error("Stripe error occurred", exc_info=True) + return JsonResponse({"error": "Payment processing error. Please try again."}, status=400) + except Exception: + logger.error("Unexpected error in payment intent creation", exc_info=True) + return JsonResponse({"error": "An internal error occurred. Please try again."}, status=500) + + +@csrf_exempt +def stripe_webhook(request): + """Stripe webhook endpoint for handling payment events.""" + payload = request.body + sig_header = request.META.get("HTTP_STRIPE_SIGNATURE") + + try: + event = stripe.Webhook.construct_event(payload, sig_header, settings.STRIPE_WEBHOOK_SECRET) + except ValueError: + # Invalid payload + return HttpResponse(status=400) + except stripe.error.SignatureVerificationError: + # Invalid signature + return HttpResponse(status=400) + + if event.type == "payment_intent.succeeded": + payment_intent = event.data.object + handle_successful_payment(payment_intent) + elif event.type == "payment_intent.payment_failed": + payment_intent = event.data.object + handle_failed_payment(payment_intent) + + return HttpResponse(status=200) + + +def handle_successful_payment(payment_intent): + """Handle successful payment by enrolling the user in the course.""" + # Get metadata from the payment intent + course_id = payment_intent.metadata.get("course_id") + user_id = payment_intent.metadata.get("user_id") + + # Create enrollment and payment records + course = Course.objects.get(id=course_id) + user = User.objects.get(id=user_id) + + # Create enrollment with pending status + enrollment = Enrollment.objects.get_or_create(student=user, course=course, defaults={"status": "pending"})[0] + + # Update status to approved after successful payment + enrollment.status = "approved" + enrollment.save() + + # Create a payment record for tracking teacher earnings + # Convert amount from cents to dollars + amount = Decimal(str(payment_intent.amount)) / 100 + Payment.objects.create( + enrollment=enrollment, + amount=amount, + currency=payment_intent.currency.upper(), + stripe_payment_intent_id=payment_intent.id, + status="completed", + ) + + # Send notifications + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + + +def handle_failed_payment(payment_intent): + """Handle failed payment.""" + course_id = payment_intent.metadata.get("course_id") + user_id = payment_intent.metadata.get("user_id") + + try: + course = Course.objects.get(id=course_id) + user = User.objects.get(id=user_id) + enrollment = Enrollment.objects.get(student=user, course=course) + enrollment.status = "pending" + enrollment.save() + except (Course.DoesNotExist, User.DoesNotExist, Enrollment.DoesNotExist): + pass # Log error or handle appropriately + + +@login_required +def update_course(request, slug): + course = get_object_or_404(Course, slug=slug) + if request.user != course.teacher: + return HttpResponseForbidden() + + if request.method == "POST": + form = CourseForm(request.POST, request.FILES, instance=course) + if form.is_valid(): + form.save() + messages.success(request, "Course updated successfully!") + return redirect("course_detail", slug=course.slug) + else: + form = CourseForm(instance=course) + + return render(request, "courses/update.html", {"form": form, "course": course}) + + +@login_required +def mark_session_attendance(request, session_id): + session = Session.objects.get(id=session_id) + if request.user != session.course.teacher: + messages.error(request, "Only the course teacher can mark attendance!") + return redirect("course_detail", slug=session.course.slug) + + if request.method == "POST": + for student_id, status in request.POST.items(): + if student_id.startswith("student_"): + student_id = student_id.replace("student_", "") + student = User.objects.get(id=student_id) + attendance, created = SessionAttendance.objects.update_or_create( + session=session, student=student, defaults={"status": status} + ) + messages.success(request, "Attendance marked successfully!") + return redirect("course_detail", slug=session.course.slug) + + enrollments = session.course.enrollments.filter(status="approved") + attendances = {att.student_id: att.status for att in session.attendances.all()} + + context = { + "session": session, + "enrollments": enrollments, + "attendances": attendances, + } + return render(request, "courses/mark_attendance.html", context) + + +@login_required +def mark_session_completed(request, session_id): + session = Session.objects.get(id=session_id) + enrollment = request.user.enrollments.get(course=session.course) + + if enrollment.status != "approved": + messages.error(request, "You must be enrolled in the course to mark sessions as completed!") + return redirect("course_detail", slug=session.course.slug) + + progress, created = CourseProgress.objects.get_or_create(enrollment=enrollment) + progress.completed_sessions.add(session) + + # Check for achievements + if progress.completion_percentage == 100: + Achievement.objects.get_or_create( + student=request.user, + course=session.course, + achievement_type="completion", + defaults={ + "title": "Course Completed!", + "description": f"Completed all sessions in {session.course.title}", + }, + ) + + if progress.attendance_rate == 100: + Achievement.objects.get_or_create( + student=request.user, + course=session.course, + achievement_type="attendance", + defaults={ + "title": "Perfect Attendance!", + "description": f"Attended all sessions in {session.course.title}", + }, + ) + + messages.success(request, "Session marked as completed!") + return redirect("course_detail", slug=session.course.slug) + + +@login_required +def award_achievement(request): + try: + profile = request.user.profile + if not profile.is_teacher: + messages.error(request, "You do not have permission to award achievements.") + return redirect("teacher_dashboard") + except Profile.DoesNotExist: + messages.error(request, "Profile not found.") + return redirect("teacher_dashboard") + + if request.method == "POST": + form = AwardAchievementForm(request.POST, teacher=request.user) + if form.is_valid(): + Achievement.objects.create( + student=form.cleaned_data["student"], + course=form.cleaned_data["course"], + achievement_type=form.cleaned_data["achievement_type"], + title=form.cleaned_data["title"], + description=form.cleaned_data["description"], + badge_icon=form.cleaned_data["badge_icon"], + ) + messages.success( + request, + f'Achievement "{form.cleaned_data["title"]}" awarded to {form.cleaned_data["student"].username}.', + ) + return redirect("teacher_dashboard") + else: + # Show an error message if the form is invalid + messages.error(request, "There was an error in the form submission. Please check the form and try again.") + else: + form = AwardAchievementForm(teacher=request.user) + return render(request, "award_achievement.html", {"form": form}) + + +@login_required +def student_progress(request, enrollment_id): + enrollment = Enrollment.objects.get(id=enrollment_id) + + if request.user != enrollment.student and request.user != enrollment.course.teacher: + messages.error(request, "You don't have permission to view this progress!") + return redirect("course_detail", slug=enrollment.course.slug) + + progress, created = CourseProgress.objects.get_or_create(enrollment=enrollment) + achievements = Achievement.objects.filter(student=enrollment.student, course=enrollment.course) + + past_sessions = enrollment.course.sessions.filter(start_time__lt=timezone.now()) + upcoming_sessions = enrollment.course.sessions.filter(start_time__gte=timezone.now()) + + context = { + "enrollment": enrollment, + "progress": progress, + "achievements": achievements, + "past_sessions": past_sessions, + "upcoming_sessions": upcoming_sessions, + "stripe_public_key": ( + settings.STRIPE_PUBLISHABLE_KEY if enrollment.status == "pending" and enrollment.course.price > 0 else None + ), + } + return render(request, "courses/student_progress.html", context) + + +@login_required +def course_progress_overview(request, slug): + course = Course.objects.get(slug=slug) + if request.user != course.teacher: + messages.error(request, "Only the course teacher can view the progress overview!") + return redirect("course_detail", slug=slug) + + enrollments = course.enrollments.filter(status="approved") + progress_data = [] + + for enrollment in enrollments: + progress, created = CourseProgress.objects.get_or_create(enrollment=enrollment) + attendance_data = ( + SessionAttendance.objects.filter(student=enrollment.student, session__course=course) + .values("status") + .annotate(count=models.Count("status")) + ) + + progress_data.append( + { + "enrollment": enrollment, + "progress": progress, + "attendance": attendance_data, + } + ) + + context = { + "course": course, + "progress_data": progress_data, + } + return render(request, "courses/progress_overview.html", context) + + +@login_required +def upload_material(request, slug): + course = get_object_or_404(Course, slug=slug) + if request.user != course.teacher: + return HttpResponseForbidden("You are not authorized to upload materials for this course.") + + if request.method == "POST": + form = CourseMaterialForm(request.POST, request.FILES, course=course) + if form.is_valid(): + material = form.save(commit=False) + material.course = course + material.save() + messages.success(request, "Course material uploaded successfully!") + return redirect("course_detail", slug=course.slug) + else: + form = CourseMaterialForm(course=course) + + return render(request, "courses/upload_material.html", {"form": form, "course": course}) + + +@login_required +def delete_material(request, slug, material_id): + material = get_object_or_404(CourseMaterial, id=material_id, course__slug=slug) + if request.user != material.course.teacher: + return HttpResponseForbidden("You are not authorized to delete this material.") + + if request.method == "POST": + material.delete() + messages.success(request, "Course material deleted successfully!") + return redirect("course_detail", slug=slug) + + return render(request, "courses/delete_material_confirm.html", {"material": material}) + + +@login_required +def download_material(request, slug, material_id): + material = get_object_or_404(CourseMaterial, id=material_id, course__slug=slug) + if not material.is_downloadable and request.user != material.course.teacher: + return HttpResponseForbidden("This material is not available for download.") + + try: + return FileResponse(material.file, as_attachment=True) + except FileNotFoundError: + messages.error(request, "The requested file could not be found.") + return redirect("course_detail", slug=slug) + + +@login_required +@teacher_required +def course_marketing(request, slug): + """View for managing course marketing and promotions.""" + course = get_object_or_404(Course, slug=slug, teacher=request.user) + + if request.method == "POST": + action = request.POST.get("action") + + if action == "send_promotional_emails": + send_course_promotion_email( + course=course, + subject=f"New Course Recommendation: {course.title}", + template_name="course_promotion", + ) + messages.success(request, "Promotional emails have been sent successfully.") + + elif action == "generate_social_content": + social_content = generate_social_share_content(course) + return JsonResponse({"social_content": social_content}) + + # Get analytics and recommendations + analytics = get_course_analytics(course) + recommendations = get_promotion_recommendations(course) + + context = { + "course": course, + "analytics": analytics, + "recommendations": recommendations, + } + + return render(request, "courses/marketing.html", context) + + +@login_required +@teacher_required +def course_analytics(request, slug): + """View for displaying detailed course analytics.""" + course = get_object_or_404(Course, slug=slug, teacher=request.user) + analytics = get_course_analytics(course) + + if request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"analytics": analytics}) + + context = { + "course": course, + "analytics": analytics, + } + + return render(request, "courses/analytics.html", context) + + +@login_required +def calendar_feed(request): + """Generate and serve an iCal feed of the user's course sessions.""" + + response = HttpResponse(generate_ical_feed(request.user), content_type="text/calendar") + response["Content-Disposition"] = f'attachment; filename="{settings.SITE_NAME}-schedule.ics"' + return response + + +@login_required +def calendar_links(request, session_id): + """Get calendar links for a specific session.""" + + session = get_object_or_404(Session, id=session_id) + + # Check if user has access to this session + if not ( + request.user == session.course.teacher + or request.user.enrollments.filter(course=session.course, status="approved").exists() + ): + return HttpResponseForbidden("You don't have access to this session.") + + links = { + "google": generate_google_calendar_link(session), + "outlook": generate_outlook_calendar_link(session), + } + + if request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"links": links}) + + return render( + request, + "courses/calendar_links.html", + { + "session": session, + "calendar_links": links, + }, + ) + + +def forum_categories(request): + """Display all forum categories.""" + categories = ForumCategory.objects.all() + return render(request, "web/forum/categories.html", {"categories": categories}) + + +def forum_category(request, slug): + """Display topics in a specific category.""" + category = get_object_or_404(ForumCategory, slug=slug) + topics = category.topics.all() + categories = ForumCategory.objects.all() + return render( + request, "web/forum/category.html", {"category": category, "topics": topics, "categories": categories} + ) + + +def forum_topic(request, category_slug, topic_id): + """Display a forum topic and its replies.""" + topic = get_object_or_404(ForumTopic, id=topic_id, category__slug=category_slug) + categories = ForumCategory.objects.all() + + # Get view count from WebRequest model + view_count = ( + WebRequest.objects.filter(path=request.path).aggregate(total_views=models.Sum("count"))["total_views"] or 0 + ) + topic.views = view_count + topic.save() + + # Handle POST requests for replies, voting, and deletion + if request.method == "POST": + action = request.POST.get("action") + + if action == "add_reply" and request.user.is_authenticated: + content = request.POST.get("content") + if content: + ForumReply.objects.create(topic=topic, author=request.user, content=content) + messages.success(request, "Reply added successfully.") + return redirect("forum_topic", category_slug=category_slug, topic_id=topic_id) + + elif action == "delete_reply" and request.user.is_authenticated: + reply_id = request.POST.get("reply_id") + reply = get_object_or_404(ForumReply, id=reply_id, author=request.user) + reply.delete() + messages.success(request, "Reply deleted successfully.") + return redirect("forum_topic", category_slug=category_slug, topic_id=topic_id) + + elif action == "delete_topic" and request.user == topic.author: + topic.delete() + messages.success(request, "Topic deleted successfully.") + return redirect("forum_category", slug=category_slug) + + # Fetch replies after POST handling + replies = topic.replies.select_related("author").order_by("created_at") + + # Votes handling + if request.user.is_authenticated: + user_topic_vote = topic.user_vote(request.user) + user_reply_votes = {reply.id: reply.user_vote(request.user) for reply in replies} + else: + user_topic_vote = None + user_reply_votes = {} + + return render( + request, + "web/forum/topic.html", + { + "topic": topic, + "replies": replies, + "categories": categories, + "user_topic_vote": user_topic_vote, + "user_reply_votes": user_reply_votes, + }, + ) + + +@login_required +def create_topic(request, category_slug): + """Create a new forum topic.""" + category = get_object_or_404(ForumCategory, slug=category_slug) + categories = ForumCategory.objects.all() + + if request.method == "POST": + form = ForumTopicForm(request.POST) + if form.is_valid(): + topic = ForumTopic.objects.create( + category=category, + author=request.user, + title=form.cleaned_data["title"], + content=form.cleaned_data["content"], + github_issue_url=form.cleaned_data.get("github_issue_url", ""), + github_milestone_url=form.cleaned_data.get("github_milestone_url", ""), + ) + messages.success(request, "Topic created successfully!") + return redirect("forum_topic", category_slug=category_slug, topic_id=topic.id) + else: + form = ForumTopicForm() + + return render( + request, "web/forum/create_topic.html", {"category": category, "form": form, "categories": categories} + ) + + +@login_required +def peer_connections(request): + """Display user's peer connections.""" + sent_connections = request.user.sent_connections.all() + received_connections = request.user.received_connections.all() + return render( + request, + "web/peer/connections.html", + { + "sent_connections": sent_connections, + "received_connections": received_connections, + }, + ) + + +@login_required +def send_connection_request(request, user_id): + """Send a peer connection request.""" + receiver = get_object_or_404(User, id=user_id) + + if request.user == receiver: + messages.error(request, "You cannot connect with yourself!") + return redirect("peer_connections") + + connection, created = PeerConnection.objects.get_or_create( + sender=request.user, receiver=receiver, defaults={"status": "pending"} + ) + + if created: + messages.success(request, f"Connection request sent to {receiver.username}!") + else: + messages.info(request, f"Connection request already sent to {receiver.username}.") + + return redirect("peer_connections") + + +@login_required +def handle_connection_request(request, connection_id, action): + """Accept or reject a peer connection request.""" + connection = get_object_or_404(PeerConnection, id=connection_id, receiver=request.user, status="pending") + + if action == "accept": + connection.status = "accepted" + messages.success(request, f"Connection with {connection.sender.username} accepted!") + elif action == "reject": + connection.status = "rejected" + messages.info(request, f"Connection with {connection.sender.username} rejected.") + + connection.save() + return redirect("peer_connections") + + +@login_required +def peer_messages(request, user_id): + """Display and handle messages with a peer.""" + peer = get_object_or_404(User, id=user_id) + + # Check if users are connected + connection = PeerConnection.objects.filter( + (Q(sender=request.user, receiver=peer) | Q(sender=peer, receiver=request.user)), + status="accepted", + ).first() + + if not connection: + messages.error(request, "You must be connected with this user to send messages.") + return redirect("peer_connections") + + if request.method == "POST": + content = request.POST.get("content") + if content: + PeerMessage.objects.create(sender=request.user, receiver=peer, content=content) + messages.success(request, "Message sent!") + + # Get conversation messages + messages_list = PeerMessage.objects.filter( + (Q(sender=request.user, receiver=peer) | Q(sender=peer, receiver=request.user)) + ).order_by("created_at") + + # Mark received messages as read + messages_list.filter(sender=peer, receiver=request.user, is_read=False).update(is_read=True) + + return render(request, "web/peer/messages.html", {"peer": peer, "messages": messages_list}) + + +@login_required +def study_groups(request, course_id): + """Display study groups for a course.""" + course = get_object_or_404(Course, id=course_id) + groups = course.study_groups.all() + + if request.method == "POST": + name = request.POST.get("name") + description = request.POST.get("description") + max_members = request.POST.get("max_members", 10) + is_private = request.POST.get("is_private", False) + + if name and description: + group = StudyGroup.objects.create( + course=course, + creator=request.user, + name=name, + description=description, + max_members=max_members, + is_private=is_private, + ) + group.members.add(request.user) + messages.success(request, "Study group created successfully!") + return redirect("study_group_detail", group_id=group.id) + + return render(request, "web/study/groups.html", {"course": course, "groups": groups}) + + +@login_required +def study_group_detail(request, group_id): + """Display study group details and handle join/leave requests.""" + group = get_object_or_404(StudyGroup, id=group_id) + + if request.method == "POST": + action = request.POST.get("action") + + if action == "join": + if group.members.count() >= group.max_members: + messages.error(request, "This group is full!") + else: + group.members.add(request.user) + messages.success(request, f"You have joined {group.name}!") + + elif action == "leave": + if request.user == group.creator: + messages.error(request, "Group creator cannot leave the group!") + else: + group.members.remove(request.user) + messages.info(request, f"You have left {group.name}.") + + return render(request, "web/study/group_detail.html", {"group": group}) + + +# API Views +@login_required +def api_course_list(request): + """API endpoint for listing courses.""" + courses = Course.objects.filter(status="published") + data = [ + { + "id": course.id, + "title": course.title, + "description": course.description, + "teacher": course.teacher.username, + "price": str(course.price), + "subject": course.subject, + "level": course.level, + "slug": course.slug, + } + for course in courses + ] + return JsonResponse(data, safe=False) + + +@login_required +@teacher_required +def api_course_create(request): + """API endpoint for creating a course.""" + if request.method != "POST": + return JsonResponse({"error": "Only POST method is allowed"}, status=405) + + data = json.loads(request.body) + course = Course.objects.create( + teacher=request.user, + title=data["title"], + description=data["description"], + learning_objectives=data["learning_objectives"], + prerequisites=data.get("prerequisites", ""), + price=data["price"], + max_students=data["max_students"], + subject=data["subject"], + level=data["level"], + ) + return JsonResponse( + { + "id": course.id, + "title": course.title, + "slug": course.slug, + }, + status=201, + ) + + +@login_required +def api_course_detail(request, slug): + """API endpoint for course details.""" + course = get_object_or_404(Course, slug=slug) + data = { + "id": course.id, + "title": course.title, + "description": course.description, + "teacher": course.teacher.username, + "price": str(course.price), + "subject": course.subject, + "level": course.level, + "prerequisites": course.prerequisites, + "learning_objectives": course.learning_objectives, + "max_students": course.max_students, + "available_spots": course.available_spots, + "average_rating": course.average_rating, + } + return JsonResponse(data) + + +@login_required +def api_enroll(request, course_slug): + """API endpoint for course enrollment.""" + if request.method != "POST": + return JsonResponse({"error": "Only POST method is allowed"}, status=405) + + course = get_object_or_404(Course, slug=course_slug) + if request.user.enrollments.filter(course=course).exists(): + return JsonResponse({"error": "Already enrolled"}, status=400) + + enrollment = Enrollment.objects.create( + student=request.user, + course=course, + status="pending", + ) + return JsonResponse( + { + "id": enrollment.id, + "status": enrollment.status, + }, + status=201, + ) + + +@login_required +def api_enrollments(request): + """API endpoint for listing user enrollments.""" + enrollments = request.user.enrollments.all() + data = [ + { + "id": enrollment.id, + "course": { + "id": enrollment.course.id, + "title": enrollment.course.title, + "slug": enrollment.course.slug, + }, + "status": enrollment.status, + "enrollment_date": enrollment.enrollment_date.isoformat(), + } + for enrollment in enrollments + ] + return JsonResponse(data, safe=False) + + +@login_required +def api_session_list(request, course_slug): + """API endpoint for listing course sessions.""" + course = get_object_or_404(Course, slug=course_slug) + sessions = course.sessions.all() + data = [ + { + "id": session.id, + "title": session.title, + "description": session.description, + "start_time": session.start_time.isoformat(), + "end_time": session.end_time.isoformat(), + "is_virtual": session.is_virtual, + } + for session in sessions + ] + return JsonResponse(data, safe=False) + + +@login_required +def api_session_detail(request, pk): + """API endpoint for session details.""" + session = get_object_or_404(Session, pk=pk) + data = { + "id": session.id, + "title": session.title, + "description": session.description, + "start_time": session.start_time.isoformat(), + "end_time": session.end_time.isoformat(), + "is_virtual": session.is_virtual, + "meeting_link": session.meeting_link if session.is_virtual else None, + "location": session.location if not session.is_virtual else None, + } + return JsonResponse(data) + + +@login_required +def api_forum_topic_create(request): + """API endpoint for creating forum topics.""" + if request.method != "POST": + return JsonResponse({"error": "Only POST method is allowed"}, status=405) + + data = json.loads(request.body) + category = get_object_or_404(ForumCategory, id=data["category"]) + topic = ForumTopic.objects.create( + title=data["title"], + content=data["content"], + category=category, + author=request.user, + ) + return JsonResponse( + { + "id": topic.id, + "title": topic.title, + }, + status=201, + ) + + +@login_required +def api_forum_reply_create(request): + """API endpoint for creating forum replies.""" + if request.method != "POST": + return JsonResponse({"error": "Only POST method is allowed"}, status=405) + + data = json.loads(request.body) + topic = get_object_or_404(ForumTopic, id=data["topic"]) + reply = ForumReply.objects.create( + topic=topic, + content=data["content"], + author=request.user, + ) + return JsonResponse( + { + "id": reply.id, + "content": reply.content, + }, + status=201, + ) + + +@login_required +def session_detail(request, session_id): + try: + session = get_object_or_404(Session, id=session_id) + + # Check access rights + if not ( + request.user == session.course.teacher + or request.user.enrollments.filter(course=session.course, status="approved").exists() + ): + return HttpResponseForbidden("You don't have access to this session") + + # Get next session for waiting room functionality + next_session = None + user_in_session_waiting_room = False + + if request.user.is_authenticated: + # Get the next upcoming session for this course + next_session = session.course.sessions.filter(start_time__gt=timezone.now()).order_by("start_time").first() + + # Check if user is in the session waiting room + try: + session_waiting_room = WaitingRoom.objects.get(course=session.course, status="open") + user_in_session_waiting_room = request.user in session_waiting_room.participants.all() + except WaitingRoom.DoesNotExist: + user_in_session_waiting_room = False + + context = { + "session": session, + "is_teacher": request.user == session.course.teacher, + "now": timezone.now(), + "next_session": next_session, + "user_in_session_waiting_room": user_in_session_waiting_room, + } + + return render(request, "web/study/session_detail.html", context) + + except Session.DoesNotExist: + messages.error(request, "Session not found") + return redirect("course_search") + except Exception as e: + if settings.DEBUG: + raise e + messages.error(request, "An error occurred while loading the session") + return redirect("index") + + +def blog_list(request): + blog_posts = BlogPost.objects.filter(status="published").order_by("-published_at") + tags = BlogPost.objects.values_list("tags", flat=True).distinct() + # Split comma-separated tags and get unique values + unique_tags = sorted(set(tag.strip() for tags_str in tags if tags_str for tag in tags_str.split(","))) + + return render(request, "blog/list.html", {"blog_posts": blog_posts, "tags": unique_tags}) + + +def blog_tag(request, tag): + """View for filtering blog posts by tag.""" + blog_posts = BlogPost.objects.filter(status="published", tags__icontains=tag).order_by("-published_at") + tags = BlogPost.objects.values_list("tags", flat=True).distinct() + # Split comma-separated tags and get unique values + unique_tags = sorted(set(tag.strip() for tags_str in tags if tags_str for tag in tags_str.split(","))) + + return render(request, "blog/list.html", {"blog_posts": blog_posts, "tags": unique_tags, "current_tag": tag}) + + +@login_required +def create_blog_post(request): + if request.method == "POST": + form = BlogPostForm(request.POST, request.FILES) + if form.is_valid(): + post = form.save(commit=False) + post.author = request.user + post.save() + messages.success(request, "Blog post created successfully!") + return redirect("blog_detail", slug=post.slug) + else: + form = BlogPostForm() + + return render(request, "blog/create.html", {"form": form}) + + +def blog_detail(request, slug): + """Display a blog post and its comments.""" + post = get_object_or_404(BlogPost, slug=slug, status="published") + comments = post.comments.filter(is_approved=True).order_by("created_at") + + if request.method == "POST": + if not request.user.is_authenticated: + messages.error(request, "Please log in to comment.") + return redirect("account_login") + + comment_content = request.POST.get("content") + if comment_content: + comment = BlogComment.objects.create( + post=post, author=request.user, content=comment_content, is_approved=True # Auto-approve for now + ) + messages.success(request, f"Comment #{comment.id} added successfully!") + return redirect("blog_detail", slug=slug) + + # Get view count from WebRequest + view_count = WebRequest.objects.filter(path=request.path).aggregate(total_views=Sum("count"))["total_views"] or 0 + + context = { + "post": post, + "comments": comments, + "view_count": view_count, + } + return render(request, "blog/detail.html", context) + + +@login_required +def student_dashboard(request): + """ + Dashboard view for students showing enrollments, progress, upcoming sessions, learning streak, + and an Achievements section. + """ + + # Update the learning streak. + streak, created = LearningStreak.objects.get_or_create(user=request.user) + streak.update_streak() + + enrollments = Enrollment.objects.filter(student=request.user).select_related("course") + upcoming_sessions = Session.objects.filter( + course__enrollments__student=request.user, start_time__gt=timezone.now() + ).order_by("start_time")[:5] + + progress_data = [] + total_progress = 0 + for enrollment in enrollments: + progress, _ = CourseProgress.objects.get_or_create(enrollment=enrollment) + progress_data.append( + { + "enrollment": enrollment, + "progress": progress, + } + ) + total_progress += progress.completion_percentage + + avg_progress = round(total_progress / len(progress_data)) if progress_data else 0 + + # Query achievements for the user. + achievements = Achievement.objects.filter(student=request.user).order_by("-awarded_at") + + context = { + "enrollments": enrollments, + "upcoming_sessions": upcoming_sessions, + "progress_data": progress_data, + "avg_progress": avg_progress, + "streak": streak, + "achievements": achievements, + } + return render(request, "dashboard/student.html", context) + + +@login_required +@teacher_required +def teacher_dashboard(request): + """Dashboard view for teachers showing their courses, student progress, and upcoming sessions. + + The earnings calculation is based on completed payment records, not just enrollments. + This ensures that earnings accurately reflect actual transactions rather than just the + number of enrolled students. Each payment has a 90% teacher commission rate applied. + """ + courses = Course.objects.filter(teacher=request.user) + upcoming_sessions = Session.objects.filter(course__teacher=request.user, start_time__gt=timezone.now()).order_by( + "start_time" + )[:5] + + # Get enrollment and progress stats for each course + course_stats = [] + total_students = 0 + total_completed = 0 + total_earnings = Decimal("0.00") + for course in courses: + enrollments = course.enrollments.filter(status="approved") + course_total_students = enrollments.count() + course_completed = enrollments.filter(status="completed").count() + total_students += course_total_students + total_completed += course_completed + + # Calculate earnings based on completed payments instead of enrollment count + # Each payment has an amount field which represents the actual amount paid + # We apply the teacher's commission rate (90% by default, 10% platform fee) + course_earnings = Decimal("0.00") + for enrollment in enrollments: + # Get all completed payments for this enrollment + completed_payments = enrollment.payments.filter(status="completed") + for payment in completed_payments: + # Apply the 90% teacher commission + course_earnings += payment.amount * Decimal("0.9") + + total_earnings += course_earnings + course_stats.append( + { + "course": course, + "total_students": course_total_students, + "completed": course_completed, + "completion_rate": (course_completed / course_total_students * 100) if course_total_students > 0 else 0, + "earnings": course_earnings, + } + ) + + # Get the teacher's storefront if it exists + storefront = Storefront.objects.filter(teacher=request.user).first() + + context = { + "courses": courses, + "upcoming_sessions": upcoming_sessions, + "course_stats": course_stats, + "total_students": total_students, + "completion_rate": (total_completed / total_students * 100) if total_students > 0 else 0, + "total_earnings": round(total_earnings, 2), + "storefront": storefront, + } + return render(request, "dashboard/teacher.html", context) + + +def custom_404(request, exception): + """Custom 404 error handler""" + return render(request, "404.html", status=404) + + +# def custom_500(request): +# """Custom 500 error handler""" +# return render(request, "500.html", status=500) + + +def custom_429(request, exception=None): + """Custom 429 error page.""" + return render(request, "429.html", status=429) + + +def cart_view(request): + """View the shopping cart.""" + cart = get_or_create_cart(request) + return render(request, "cart/cart.html", {"cart": cart, "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY}) + + +def add_course_to_cart(request, course_id): + """Add a course to the cart.""" + course = get_object_or_404(Course, id=course_id) + cart = get_or_create_cart(request) + + # Try to get or create the cart item + cart_item, created = CartItem.objects.get_or_create(cart=cart, course=course, defaults={"session": None}) + + if created: + messages.success(request, f"{course.title} added to cart.") + else: + messages.info(request, f"{course.title} is already in your cart.") + + return redirect("cart_view") + + +def add_session_to_cart(request, session_id): + """Add an individual session to the cart.""" + session = get_object_or_404(Session, id=session_id) + cart = get_or_create_cart(request) + + # Try to get or create the cart item + cart_item, created = CartItem.objects.get_or_create(cart=cart, session=session, defaults={"course": None}) + + if created: + messages.success(request, f"{session.title} added to cart.") + else: + messages.info(request, f"{session.title} is already in your cart.") + + return redirect("cart_view") + + +def remove_from_cart(request, item_id): + """Remove an item from the shopping cart.""" + cart = get_or_create_cart(request) + item = get_object_or_404(CartItem, id=item_id, cart=cart) + item.delete() + messages.success(request, "Item removed from cart.") + return redirect("cart_view") + + +def create_cart_payment_intent(request): + """Create a payment intent for the entire cart.""" + cart = get_or_create_cart(request) + + if not cart.items.exists(): + return JsonResponse({"error": "Cart is empty"}, status=400) + + # Handle free cart (all items are free courses) + if cart.total == 0: + return JsonResponse({"free_cart": True, "message": "Cart contains only free items"}) + + try: + # Create a PaymentIntent with the cart total + intent = stripe.PaymentIntent.create( + amount=int(cart.total * 100), # Convert to cents + currency="usd", + metadata={ + "cart_id": cart.id, + "user_id": request.user.id if request.user.is_authenticated else None, + "session_key": request.session.session_key if not request.user.is_authenticated else None, + }, + ) + return JsonResponse({"clientSecret": intent.client_secret}) + except Exception as e: + return JsonResponse({"error": str(e)}, status=403) + + +@login_required +def free_cart_checkout(request): + """Handle checkout for cart with only free items.""" + if request.method != "POST": + messages.error(request, "Invalid request method.") + return redirect("cart_view") + + cart = get_or_create_cart(request) + + if not cart.items.exists(): + messages.error(request, "Cart is empty.") + return redirect("cart_view") + + # Verify that cart total is 0 (all items are free) + if cart.total != 0: + messages.error(request, "Cart contains paid items. Please use regular checkout.") + return redirect("cart_view") + + user = request.user + enrollments = [] + session_enrollments = [] + goods_items = [] + + # Create the Order + order = Order.objects.create( + user=user, + total_price=0, + status="completed", + shipping_address=None, + terms_accepted=True, + ) + + # Process enrollments + for item in cart.items.all(): + if item.course: + # Create enrollment for free course + enrollment = Enrollment.objects.create(student=user, course=item.course, status="approved") + enrollments.append(enrollment) + + # Send notifications + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + + elif item.session: + # Process individual session enrollments + session_enrollment = SessionEnrollment.objects.create(student=user, session=item.session, status="approved") + session_enrollments.append(session_enrollment) + + elif item.goods: + # Free goods (price = 0) + goods_items.append(item) + OrderItem.objects.create( + order=order, + goods=item.goods, + quantity=1, + price_at_purchase=0, + discounted_price_at_purchase=0, + ) + + # Clear the cart + cart.items.all().delete() + + # Render the receipt page + return render( + request, + "cart/receipt.html", + { + "payment_intent_id": None, + "order_date": timezone.now(), + "user": user, + "enrollments": enrollments, + "session_enrollments": session_enrollments, + "goods_items": goods_items, + "total": 0, + "order": order, + "shipping_address": None, + }, + ) + + +def checkout_success(request): + """Handle successful checkout and payment confirmation.""" + payment_intent_id = request.GET.get("payment_intent") + + if not payment_intent_id: + messages.error(request, "No payment information found.") + return redirect("cart_view") + + try: + # Verify the payment intent + payment_intent = stripe.PaymentIntent.retrieve(payment_intent_id) + + if payment_intent.status != "succeeded": + messages.error(request, "Payment was not successful.") + return redirect("cart_view") + + cart = get_or_create_cart(request) + + if not cart.items.exists(): + messages.error(request, "Cart is empty.") + return redirect("cart_view") + + # Handle guest checkout + if not request.user.is_authenticated: + email = payment_intent.receipt_email + if not email: + messages.error(request, "No email provided for guest checkout.") + return redirect("cart_view") + + # Create a new user account with transaction and better username generation + with transaction.atomic(): + # Generate a random username without using the email + timestamp = timezone.now().strftime("%Y%m%d%H%M%S") + username = f"user_{timestamp}" + + # In the unlikely case of a collision, append random string + while User.objects.filter(username=username).exists(): + username = f"user_{timestamp}_{get_random_string(6)}" + + # Create the user + user = User.objects.create_user( + username=username, + email=email, + password=get_random_string(length=32), # Random password for reset + ) + + # Associate the cart with the new user + cart.user = user + cart.session_key = "" # Empty string instead of None + cart.save() + + # Send welcome email with password reset link + send_welcome_email(user) + + # Log in the new user + login(request, user, backend="django.contrib.auth.backends.ModelBackend") + else: + user = request.user + + # Lists to track enrollments for the receipt + enrollments = [] + session_enrollments = [] + goods_items = [] + total_amount = 0 + + # Define shipping_address + shipping_address = request.POST.get("address") if cart.has_goods else None + + # Check if the cart contains goods requiring shipping + has_goods = any(item.goods for item in cart.items.all()) + + # Extract shipping address from Stripe PaymentIntent + shipping_address = None + if has_goods: + shipping_data = getattr(payment_intent, "shipping", None) + if shipping_data: + # Construct structured shipping address + shipping_address = { + "line1": shipping_data.address.line1, + "line2": shipping_data.address.line2 or "", + "city": shipping_data.address.city, + "state": shipping_data.address.state, + "postal_code": shipping_data.address.postal_code, + "country": shipping_data.address.country, + } + + # Create the Order with shipping address + order = Order.objects.create( + user=user, # User is defined earlier in guest/auth logic + total_price=0, # Updated later + status="completed", + shipping_address=shipping_address, + terms_accepted=True, + ) + + storefront = None + # Process enrollments + for item in cart.items.all(): + if item.course: + # Check for an active discount coupon for this course + discount = Discount.objects.filter( + user=user, course=item.course, used=False, valid_until__gte=timezone.now() + ).first() + if discount: + # Calculate the discounted price + discount_amount = (discount.discount_percentage / 100) * item.course.price + effective_price = item.course.price - discount_amount + # Mark the coupon as used + discount.used = True + discount.save() + else: + effective_price = item.course.price + + # Create enrollment for the course + enrollment = Enrollment.objects.create( + student=user, course=item.course, status="approved", payment_intent_id=payment_intent_id + ) + enrollments.append(enrollment) + total_amount += effective_price + + # Create payment record for teacher earnings calculation + Payment.objects.create( + enrollment=enrollment, + amount=effective_price, + currency="USD", + stripe_payment_intent_id=payment_intent_id, + status="completed", + ) + + # Optionally, you can send confirmation emails with discount details + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + + elif item.session: + # Process individual session enrollments (no discount logic here) + session_enrollment = SessionEnrollment.objects.create( + student=user, session=item.session, status="approved", payment_intent_id=payment_intent_id + ) + session_enrollments.append(session_enrollment) + total_amount += item.session.price + + elif item.goods: + goods_items.append(item) + total_amount += item.final_price + OrderItem.objects.create( + order=order, + goods=item.goods, + quantity=1, + price_at_purchase=item.goods.price, + discounted_price_at_purchase=item.goods.discount_price, + ) + if not storefront: + storefront = item.goods.storefront + + # Update order details + order.total_price = total_amount + if storefront: + order.storefront = goods_items[0].goods.storefront + order.save() + + # Clear the cart + cart.items.all().delete() + + if storefront: + order.storefront = storefront + order.save(update_fields=["storefront"]) + + # Render the receipt page + return render( + request, + "cart/receipt.html", + { + "payment_intent_id": payment_intent_id, + "order_date": timezone.now(), + "user": user, + "enrollments": enrollments, + "session_enrollments": session_enrollments, + "goods_items": goods_items, + "total": total_amount, + "order": order, + "shipping_address": shipping_address, + }, + ) + + except stripe.error.StripeError as e: + # send slack message + send_slack_message(f"Payment verification failed: {str(e)}") + messages.error(request, f"Payment verification failed: {str(e)}") + return redirect("cart_view") + except Exception as e: + # send slack message + send_slack_message(f"Failed to process checkout: {str(e)}") + messages.error(request, f"Failed to process checkout: {str(e)}") + return redirect("cart_view") + + +def send_welcome_email(user): + """Send welcome email to newly created users after guest checkout.""" + if not user.email: + raise ValueError("User must have an email address to send welcome email") + + reset_url = reverse("account_reset_password") + context = { + "user": user, + "reset_url": reset_url, + } + + html_message = render_to_string("emails/welcome_guest.html", context) + text_message = render_to_string("emails/welcome_guest.txt", context) + + send_mail( + subject="Welcome to Your New Learning Account", + message=text_message, + html_message=html_message, + from_email=settings.DEFAULT_FROM_EMAIL, + recipient_list=[user.email], + ) + + +@login_required +def edit_session(request, session_id): + """Edit an existing session.""" + # Get the session and verify that the current user is the course teacher + session = get_object_or_404(Session, id=session_id) + course = session.course + + # Check if user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can edit sessions!") + return redirect("course_detail", slug=course.slug) + + if request.method == "POST": + form = SessionForm(request.POST, instance=session) + if form.is_valid(): + form.save() + messages.success(request, "Session updated successfully!") + return redirect("course_detail", slug=session.course.slug) + else: + form = SessionForm(instance=session) + + return render( + request, "courses/session_form.html", {"form": form, "session": session, "course": course, "is_edit": True} + ) + + +@login_required +def invite_student(request, course_id): + course = get_object_or_404(Course, id=course_id) + + # Check if user is the teacher of this course + if course.teacher != request.user: + messages.error(request, "You are not authorized to invite students to this course.") + return redirect("course_detail", slug=course.slug) + + if request.method == "POST": + form = InviteStudentForm(request.POST) + if form.is_valid(): + email = form.cleaned_data["email"] + message = form.cleaned_data.get("message", "") + + # Generate course URL + course_url = request.build_absolute_uri(reverse("course_detail", args=[course.slug])) + + # Send invitation email + context = { + "course": course, + "teacher": request.user, + "message": message, + "course_url": course_url, + } + html_message = render_to_string("emails/course_invitation.html", context) + text_message = f""" +You have been invited to join {course.title}! + +Message from {request.user.get_full_name() or request.user.username}: +{message} + +Course Price: ${course.price} + +Click here to view the course: {course_url} +""" + + try: + send_mail( + f"Invitation to join {course.title}", + text_message, + settings.DEFAULT_FROM_EMAIL, + [email], + html_message=html_message, + ) + messages.success(request, f"Invitation sent to {email}") + return redirect("course_detail", slug=course.slug) + except Exception: + messages.error(request, "Failed to send invitation email. Please try again.") + else: + form = InviteStudentForm() + + context = { + "course": course, + "form": form, + } + return render(request, "courses/invite.html", context) + + +def terms(request): + """Display the terms of service page.""" + return render(request, "terms.html") + + +@login_required +@teacher_required +def stripe_connect_onboarding(request): + """Start the Stripe Connect onboarding process for teachers.""" + if not request.user.profile.is_teacher: + messages.error(request, "Only teachers can set up payment accounts.") + return redirect("profile") + + try: + if not request.user.profile.stripe_account_id: + # Create a new Stripe Connect account + account = stripe.Account.create( + type="express", + country="US", + email=request.user.email, + capabilities={ + "card_payments": {"requested": True}, + "transfers": {"requested": True}, + }, + ) + + # Save the account ID to the user's profile + request.user.profile.stripe_account_id = account.id + request.user.profile.save() + + # Create an account link for onboarding + account_link = stripe.AccountLink.create( + account=request.user.profile.stripe_account_id, + refresh_url=request.build_absolute_uri(reverse("stripe_connect_onboarding")), + return_url=request.build_absolute_uri(reverse("profile")), + type="account_onboarding", + ) + + return redirect(account_link.url) + + except stripe.error.StripeError as e: + messages.error(request, f"Failed to set up Stripe account: {str(e)}") + return redirect("profile") + + +@csrf_exempt +def stripe_connect_webhook(request): + """Handle Stripe Connect account updates.""" + payload = request.body + sig_header = request.META.get("HTTP_STRIPE_SIGNATURE") + + try: + event = stripe.Webhook.construct_event(payload, sig_header, settings.STRIPE_CONNECT_WEBHOOK_SECRET) + except ValueError: + return HttpResponse(status=400) + except stripe.error.SignatureVerificationError: + return HttpResponse(status=400) + + if event.type == "account.updated": + account = event.data.object + try: + profile = Profile.objects.get(stripe_account_id=account.id) + if account.charges_enabled and account.payouts_enabled: + profile.stripe_account_status = "verified" + else: + profile.stripe_account_status = "pending" + profile.save() + except Profile.DoesNotExist: + return HttpResponse(status=404) + + return HttpResponse(status=200) + + +@login_required +def create_forum_category(request): + """Create a new forum category.""" + if request.method == "POST": + form = ForumCategoryForm(request.POST) + if form.is_valid(): + category = form.save(commit=False) + if not category.slug: + category.slug = slugify(category.name) + category.save() + messages.success(request, f"Forum category '{category.name}' created successfully!") + return redirect("forum_category", slug=category.slug) + else: + print(form.errors) + else: + form = ForumCategoryForm() + + return render(request, "web/forum/create_category.html", {"form": form}) + + +@login_required +def edit_topic(request, topic_id): + topic = get_object_or_404(ForumTopic, id=topic_id, author=request.user) + categories = ForumCategory.objects.all() + + if request.method == "POST": + form = ForumTopicForm(request.POST) + if form.is_valid(): + # Manually update the topic instance with form data. + topic.title = form.cleaned_data["title"] + topic.content = form.cleaned_data["content"] + topic.github_issue_url = form.cleaned_data.get("github_issue_url", "") + topic.github_milestone_url = form.cleaned_data.get("github_milestone_url", "") + topic.save() + messages.success(request, "Topic updated successfully!") + return redirect("forum_topic", category_slug=topic.category.slug, topic_id=topic.id) + else: + # Prepopulate the form with the topic's current data. + initial_data = { + "title": topic.title, + "content": topic.content, + "github_issue_url": topic.github_issue_url, + "github_milestone_url": topic.github_milestone_url, + } + form = ForumTopicForm(initial=initial_data) + + return render(request, "web/forum/edit_topic.html", {"topic": topic, "form": form, "categories": categories}) + + +@login_required +def my_forum_topics(request): + """Display all forum topics created by the current user.""" + topics = ForumTopic.objects.filter(author=request.user).order_by("-created_at") + categories = ForumCategory.objects.all() + return render(request, "web/forum/my_topics.html", {"topics": topics, "categories": categories}) + + +@login_required +def my_forum_replies(request): + """Display all forum replies created by the current user.""" + replies = ( + ForumReply.objects.filter(author=request.user) + .select_related("topic", "topic__category") + .order_by("-created_at") + ) + categories = ForumCategory.objects.all() + return render(request, "web/forum/my_replies.html", {"replies": replies, "categories": categories}) + + +@login_required +def edit_reply(request, reply_id): + """Edit a forum reply.""" + reply = get_object_or_404(ForumReply, id=reply_id, author=request.user) + topic = reply.topic + categories = ForumCategory.objects.all() + + if request.method == "POST": + content = request.POST.get("content") + if content: + reply.content = content + reply.save() + messages.success(request, "Reply updated successfully.") + return redirect("forum_topic", category_slug=topic.category.slug, topic_id=topic.id) + + return render(request, "web/forum/edit_reply.html", {"reply": reply, "categories": categories}) + + +def get_course_calendar(request, slug): + """AJAX endpoint to get calendar data for a course.""" + course = get_object_or_404(Course, slug=slug) + today = timezone.now().date() + calendar_weeks = [] + + # Get current month and year from query parameters + year = int(request.GET.get("year", today.year)) + month = int(request.GET.get("month", today.month)) + current_month = timezone.datetime(year, month, 1).date() + + # Get previous and next month for navigation + if month == 1: + prev_month = {"year": year - 1, "month": 12} + else: + prev_month = {"year": year, "month": month - 1} + + if month == 12: + next_month = {"year": year + 1, "month": 1} + else: + next_month = {"year": year, "month": month + 1} + + # Get sessions for the current month + month_sessions = course.sessions.filter(start_time__year=year, start_time__month=month).order_by("start_time") + + # Generate calendar data + cal = calendar.monthcalendar(year, month) + + for week in cal: + calendar_week = [] + for day in week: + if day == 0: + calendar_week.append({"date": None, "has_session": False, "is_today": False}) + else: + date = timezone.datetime(year, month, day).date() + sessions_on_day = [s for s in month_sessions if s.start_time.date() == date] + calendar_week.append( + { + "date": date.isoformat() if date else None, + "has_session": bool(sessions_on_day), + "is_today": date == today, + } + ) + calendar_weeks.append(calendar_week) + + data = { + "calendar_weeks": calendar_weeks, + "current_month": current_month.strftime("%B %Y"), + "prev_month": prev_month, + "next_month": next_month, + } + + return JsonResponse(data) + + +@login_required +def create_calendar(request): + if request.method == "POST": + title = request.POST.get("title") + description = request.POST.get("description") + try: + month = int(request.POST.get("month")) + year = int(request.POST.get("year")) + + # Validate month is between 0-11 + if not 0 <= month <= 11: + return JsonResponse({"success": False, "error": "Month must be between 0 and 11"}, status=400) + + calendar = EventCalendar.objects.create( + title=title, description=description, creator=request.user, month=month, year=year + ) + + return JsonResponse({"success": True, "calendar_id": calendar.id, "share_token": calendar.share_token}) + except (ValueError, TypeError): + return JsonResponse({"success": False, "error": "Invalid month or year"}, status=400) + + return render(request, "calendar/create.html") + + +def view_calendar(request, share_token): + calendar = get_object_or_404(EventCalendar, share_token=share_token) + return render(request, "calendar/view.html", {"calendar": calendar}) + + +@require_POST +def add_time_slot(request, share_token): + try: + with transaction.atomic(): + calendar = get_object_or_404(EventCalendar, share_token=share_token) + name = request.POST.get("name") + day = int(request.POST.get("day")) + start_time = request.POST.get("start_time") + end_time = request.POST.get("end_time") + + # Create the time slot + TimeSlot.objects.create(calendar=calendar, name=name, day=day, start_time=start_time, end_time=end_time) + + return JsonResponse({"success": True}) + except IntegrityError: + return JsonResponse({"success": False, "error": "You already have a time slot for this day"}, status=400) + except Exception as e: + return JsonResponse({"success": False, "error": str(e)}, status=400) + + +@require_POST +def remove_time_slot(request, share_token): + calendar = get_object_or_404(EventCalendar, share_token=share_token) + name = request.POST.get("name") + day = int(request.POST.get("day")) + + TimeSlot.objects.filter(calendar=calendar, name=name, day=day).delete() + + return JsonResponse({"success": True}) + + +@require_GET +def get_calendar_data(request, share_token): + calendar = get_object_or_404(EventCalendar, share_token=share_token) + slots = TimeSlot.objects.filter(calendar=calendar) + + data = { + "title": calendar.title, + "description": calendar.description, + "month": calendar.month, + "year": calendar.year, + "slots": [ + { + "name": slot.name, + "day": slot.day, + "start_time": slot.start_time.strftime("%H:%M"), + "end_time": slot.end_time.strftime("%H:%M"), + } + for slot in slots + ], + } + + return JsonResponse(data) + + +def system_status(request): + """Check system status including SendGrid API connectivity and disk space usage.""" + status = { + "sendgrid": {"status": "unknown", "message": "", "api_key_configured": False}, + "disk_space": {"status": "unknown", "message": "", "usage": {}}, + "timestamp": timezone.now(), + } + + # Check SendGrid + sendgrid_api_key = os.getenv("SENDGRID_PASSWORD") + if sendgrid_api_key: + status["sendgrid"]["api_key_configured"] = True + try: + print("Checking SendGrid API...") + response = requests.get( + "https://api.sendgrid.com/v3/user/account", + headers={"Authorization": f"Bearer {sendgrid_api_key}"}, + timeout=5, + ) + if response.status_code == 200: + status["sendgrid"]["status"] = "ok" + status["sendgrid"]["message"] = "Successfully connected to SendGrid API" + else: + status["sendgrid"]["status"] = "error" + status["sendgrid"]["message"] = f"Unexpected response: {response.status_code}" + except requests.exceptions.RequestException as e: + status["sendgrid"]["status"] = "error" + status["sendgrid"]["message"] = f"API Error: {str(e)}" + else: + status["sendgrid"]["status"] = "error" + status["sendgrid"]["message"] = "SendGrid API key not configured" + + # Check disk space + try: + total, used, free = shutil.disk_usage("/") + total_gb = total / (2**30) # Convert to GB + used_gb = used / (2**30) + free_gb = free / (2**30) + usage_percent = (used / total) * 100 + + status["disk_space"]["usage"] = { + "total_gb": round(total_gb, 2), + "used_gb": round(used_gb, 2), + "free_gb": round(free_gb, 2), + "percent": round(usage_percent, 1), + } + + # Set status based on usage percentage + if usage_percent >= 90: + status["disk_space"]["status"] = "error" + status["disk_space"]["message"] = "Critical: Disk usage above 90%" + elif usage_percent >= 80: + status["disk_space"]["status"] = "warning" + status["disk_space"]["message"] = "Warning: Disk usage above 80%" + else: + status["disk_space"]["status"] = "ok" + status["disk_space"]["message"] = "Disk space usage is normal" + except Exception as e: + status["disk_space"]["status"] = "error" + status["disk_space"]["message"] = f"Error checking disk space: {str(e)}" + + return render(request, "status.html", {"status": status}) + + +@login_required +@teacher_required +def message_enrolled_students(request, slug): + """Send an email to all enrolled students in a course with encrypted content.""" + course = get_object_or_404(Course, slug=slug, teacher=request.user) + + if request.method == "POST": + title = request.POST.get("title") + message = request.POST.get("message") + + if title and message: + original_message = message + + # Get all enrolled students + enrolled_students = User.objects.filter( + enrollments__course=course, enrollments__status="approved" + ).distinct() + + # Send email to each student with the encrypted message + for student in enrolled_students: + send_mail( + subject=f"[{course.title}] {title}", + message=original_message, + from_email=settings.DEFAULT_FROM_EMAIL, + recipient_list=[student.email], + fail_silently=True, + ) + + messages.success(request, "Email sent successfully to all enrolled students!") + return redirect("course_detail", slug=slug) + else: + messages.error(request, "Both title and message are required!") + + return render(request, "courses/message_students.html", {"course": course}) + + +def message_teacher(request, teacher_id): + """Send a message to a teacher with secure encryption.""" + teacher = get_object_or_404(get_user_model(), id=teacher_id) + if not teacher.profile.is_teacher: + messages.error(request, "This user is not a teacher.") + return redirect("index") + + if request.method == "POST": + form = MessageTeacherForm(request.POST, user=request.user) + if form.is_valid(): + original_message = request.POST.get("message") + + # Prepare email content + if request.user.is_authenticated: + sender_name = request.user.get_full_name() or request.user.username + sender_email = request.user.email + else: + sender_name = form.cleaned_data["name"] + sender_email = form.cleaned_data["email"] + + # Send email to teacher using the encrypted message + context = { + "sender_name": sender_name, + "sender_email": sender_email, + "message": original_message, + "inbox_url": request.build_absolute_uri(reverse("inbox")), + "messaging_dashboard_url": request.build_absolute_uri(reverse("messaging_dashboard")), + } + html_message = render_to_string("web/emails/teacher_message.html", context) + + try: + send_mail( + subject=f"New message from {sender_name}", + message=original_message, + from_email=settings.DEFAULT_FROM_EMAIL, + recipient_list=[teacher.email], + html_message=html_message, + ) + messages.success(request, "Your message has been sent successfully!") + + # Optionally redirect based on next URL parameter + next_url = request.GET.get("next") + if next_url: + try: + return redirect("course_detail", slug=next_url) + except NoReverseMatch: + pass + return redirect("course_search") + except Exception as e: + messages.error(request, f"Failed to send message: {str(e)}") + return redirect("message_teacher", teacher_id=teacher_id) + else: + form = MessageTeacherForm(user=request.user) + + return render( + request, + "web/message_teacher.html", + { + "form": form, + "teacher": teacher, + }, + ) + + +@login_required +def confirm_rolled_sessions(request, course_slug): + """View for teachers to confirm rolled over session dates.""" + course = get_object_or_404(Course, slug=course_slug, teacher=request.user) + + # Get all rolled over but unconfirmed sessions + rolled_sessions = course.sessions.filter(is_rolled_over=True, teacher_confirmed=False).order_by("start_time") + + if request.method == "POST": + session_ids = request.POST.getlist("confirm_sessions") + if session_ids: + # Confirm selected sessions + course.sessions.filter(id__in=session_ids).update(teacher_confirmed=True) + messages.success(request, "Selected sessions have been confirmed.") + + # Reset rollover status for unselected sessions + unselected_sessions = rolled_sessions.exclude(id__in=session_ids) + for session in unselected_sessions: + session.start_time = session.original_start_time + session.end_time = session.original_end_time + session.is_rolled_over = False + session.save() + + messages.info(request, "Unselected sessions have been reset to their original dates.") + + return redirect("course_detail", slug=course_slug) + + return render( + request, + "courses/confirm_rolled_sessions.html", + { + "course": course, + "rolled_sessions": rolled_sessions, + }, + ) + + +def feedback(request): + if request.method == "POST": + form = FeedbackForm(request.POST) + if form.is_valid(): + # Send feedback notification to admin + name = form.cleaned_data.get("name", "Anonymous") + email = form.cleaned_data.get("email", "Not provided") + description = form.cleaned_data["description"] + + # Send to Slack if webhook URL is configured + if settings.SLACK_WEBHOOK_URL: + message = f"*New Feedback*\nFrom: {name}\nEmail: {email}\n\n{description}" + send_slack_message(message) + + messages.success(request, "Thank you for your feedback! We appreciate your input.") + return redirect("feedback") + else: + form = FeedbackForm() + + return render(request, "feedback.html", {"form": form}) + + +def content_dashboard(request): + # Get current time and thresholds + now = timezone.now() + month_ago = now - timedelta(days=30) + + def get_status(date, threshold_days=None): + if not date: + return "neutral" + if not threshold_days: + return "success" + threshold = now - timedelta(days=threshold_days) + if date >= threshold: + return "success" + elif date >= (threshold - timedelta(days=threshold_days)): + return "warning" + return "danger" + + # Web traffic stats + web_stats = { + "total_views": WebRequest.objects.aggregate(total=Sum("count"))["total"] or 0, + "unique_visitors": WebRequest.objects.values("ip_address").distinct().count(), + "date": WebRequest.objects.order_by("-created").first().created if WebRequest.objects.exists() else None, + } + web_stats["status"] = get_status(web_stats["date"]) + + # Generate traffic data for chart (last 30 days) + traffic_data = [] + for i in range(30): + date = now - timedelta(days=i) + day_views = WebRequest.objects.filter(created__date=date.date()).aggregate(total=Sum("count"))["total"] or 0 + traffic_data.append({"date": date.strftime("%Y-%m-%d"), "views": day_views}) + traffic_data.reverse() # Most recent last for chart + + # Blog stats + blog_stats = { + "posts": BlogPost.objects.filter(status="published").count(), + "views": (WebRequest.objects.filter(path__startswith="/blog/").aggregate(total=Sum("count"))["total"] or 0), + "date": ( + BlogPost.objects.filter(status="published").order_by("-published_at").first().published_at + if BlogPost.objects.exists() + else None + ), + } + blog_stats["status"] = get_status(blog_stats["date"], 7) + + # Forum stats + forum_stats = { + "topics": ForumTopic.objects.count(), + "replies": ForumReply.objects.count(), + "date": ForumTopic.objects.order_by("-created_at").first().created_at if ForumTopic.objects.exists() else None, + } + forum_stats["status"] = get_status(forum_stats["date"], 1) # 1 day threshold + + # Course stats + course_stats = { + "active": Course.objects.filter(status="published").count(), + "students": Enrollment.objects.filter(status="approved").count(), + "date": Course.objects.order_by("-created_at").first().created_at if Course.objects.exists() else None, + } + course_stats["status"] = get_status(course_stats["date"], 30) # 1 month threshold + + # User stats + user_stats = { + "total": User.objects.count(), + "active": User.objects.filter(last_login__gte=month_ago).count(), + "date": User.objects.order_by("-date_joined").first().date_joined if User.objects.exists() else None, + } + + def get_status(date, threshold_days): + if not date: + return "danger" + days_since = (now - date).days + if days_since > threshold_days * 2: + return "danger" + elif days_since > threshold_days: + return "warning" + return "success" + + # Calculate overall health score + connected_platforms = 0 + healthy_platforms = 0 + platforms_data = [ + (blog_stats["date"], 7), # Blog: 1 week threshold + (forum_stats["date"], 7), # Forum: 1 week threshold + (course_stats["date"], 7), # Courses: 1 week threshold + (user_stats["date"], 7), # Users: 1 week threshold + ] + + for date, threshold in platforms_data: + if date: + connected_platforms += 1 + if get_status(date, threshold) != "danger": + healthy_platforms += 1 + + overall_score = int((healthy_platforms / max(connected_platforms, 1)) * 100) + + # Get social media stats + social_stats = get_social_stats() + content_data = { + "blog": { + "stats": blog_stats, + "status": get_status(blog_stats["date"], 7), + "date": blog_stats["date"], + }, + "forum": { + "stats": forum_stats, + "status": get_status(forum_stats["date"], 7), + "date": forum_stats["date"], + }, + "courses": { + "stats": course_stats, + "status": get_status(course_stats["date"], 7), + "date": course_stats["date"], + }, + "users": { + "stats": user_stats, + "status": get_status(user_stats["date"], 7), + "date": user_stats["date"], + }, + } + + # Add social media stats + content_data.update(social_stats) + + return render( + request, + "web/dashboard/content_status.html", + { + "content_data": content_data, + "overall_score": overall_score, + "web_stats": web_stats, + "traffic_data": json.dumps(traffic_data), + "blog_stats": blog_stats, + "forum_stats": forum_stats, + "course_stats": course_stats, + "user_stats": user_stats, + }, + ) + + +# Challenges views +def current_weekly_challenge(request): + current_time = timezone.now() + weekly_challenge = Challenge.objects.filter( + challenge_type="weekly", start_date__lte=current_time, end_date__gte=current_time + ).first() + + one_time_challenges = Challenge.objects.filter( + challenge_type="one_time", start_date__lte=current_time, end_date__gte=current_time + ) + user_submissions = {} + if request.user.is_authenticated: + # Get all active challenges + all_challenges = [] + if weekly_challenge: + all_challenges.append(weekly_challenge) + all_challenges.extend(list(one_time_challenges)) + + # Get all submissions for active challenges + if all_challenges: + submissions = ChallengeSubmission.objects.filter(user=request.user, challenge__in=all_challenges) + # Create a dictionary mapping challenge IDs to submissions + for submission in submissions: + user_submissions[submission.challenge_id] = submission + + return render( + request, + "web/current_weekly_challenge.html", + { + "current_challenge": weekly_challenge, + "one_time_challenges": one_time_challenges, + "user_submissions": user_submissions if request.user.is_authenticated else {}, + }, + ) + + +def challenge_detail(request, challenge_id): + try: + challenge = get_object_or_404(Challenge, id=challenge_id) + submissions = ChallengeSubmission.objects.filter(challenge=challenge) + # Check if the current user has submitted this challenge + user_submission = None + if request.user.is_authenticated: + user_submission = ChallengeSubmission.objects.filter(user=request.user, challenge=challenge).first() + + return render( + request, + "web/challenge_detail.html", + {"challenge": challenge, "submissions": submissions, "user_submission": user_submission}, + ) + except Http404: + # Redirect to weekly challenges list if specific challenge not found + messages.info(request, "Challenge not found. Returning to challenges list.") + return redirect("current_weekly_challenge") + + +@login_required +def challenge_submit(request, challenge_id): + challenge = get_object_or_404(Challenge, id=challenge_id) + # Check if the user has already submitted this challenge + existing_submission = ChallengeSubmission.objects.filter(user=request.user, challenge=challenge).first() + + if existing_submission: + return redirect("challenge_detail", challenge_id=challenge_id) + + if request.method == "POST": + form = ChallengeSubmissionForm(request.POST) + if form.is_valid(): + submission = form.save(commit=False) + submission.user = request.user + submission.challenge = challenge + submission.save() + messages.success(request, "Your submission has been recorded!") + return redirect("challenge_detail", challenge_id=challenge_id) + else: + form = ChallengeSubmissionForm() + + return render(request, "web/challenge_submit.html", {"challenge": challenge, "form": form}) + + +@require_GET +def fetch_video_title(request): + """ + Fetch video title from a URL with proper security measures to prevent SSRF attacks. + """ + url = request.GET.get("url") + if not url: + return JsonResponse({"error": "URL parameter is required"}, status=400) + + # Validate URL + try: + parsed_url = urlparse(url) + + # Check for scheme - only allow http and https + if parsed_url.scheme not in ["http", "https"]: + return JsonResponse({"error": "Invalid URL scheme. Only HTTP and HTTPS are supported."}, status=400) + + # Check for private/internal IP addresses + if parsed_url.netloc: + hostname = parsed_url.netloc.split(":")[0] + + # Block localhost variations and common internal domains + blocked_hosts = [ + "localhost", + "127.0.0.1", + "0.0.0.0", + "internal", + "intranet", + "local", + "lan", + "corp", + "private", + "::1", + ] + + if any(blocked in hostname.lower() for blocked in blocked_hosts): + return JsonResponse({"error": "Access to internal networks is not allowed"}, status=403) + + # Resolve hostname to IP and check if it's private + try: + ip_address = socket.gethostbyname(hostname) + ip_obj = ipaddress.ip_address(ip_address) + + # Check if the IP is private/internal + if ip_obj.is_private or ip_obj.is_loopback or ip_obj.is_link_local or ip_obj.is_multicast: + return JsonResponse({"error": "Access to internal/private networks is not allowed"}, status=403) + except (socket.gaierror, ValueError): + # If hostname resolution fails or IP parsing fails, continue + pass + + except Exception as e: + return JsonResponse({"error": f"Invalid URL format: {str(e)}"}, status=400) + + # Set a timeout to prevent hanging requests + timeout = 5 # seconds + + try: + # Only allow HEAD and GET methods with limited redirects + response = requests.get( + url, + timeout=timeout, + allow_redirects=True, + headers={ + "User-Agent": "Educational-Website-Validator/1.0", + }, + ) + response.raise_for_status() + + # Extract title from response headers or content + title = response.headers.get("title", "") + if not title: + # Try to extract title from HTML content + content = response.text + title_match = re.search(r"(.*?)", content, re.IGNORECASE | re.DOTALL) + title = title_match.group(1).strip() if title_match else "Untitled Video" + + # Sanitize the title + title = html.escape(title) + + return JsonResponse({"title": title}) + + except requests.RequestException as e: + logger.error(f"Error fetching video title from {url}: {str(e)}") + return JsonResponse({"error": f"Failed to fetch video title: {str(e)}"}, status=500) + except Exception as e: + logger.error(f"Unexpected error fetching video title from {url}: {str(e)}") + return JsonResponse({"error": "An unexpected error occurred while fetching the title"}, status=500) + + +def get_referral_stats(): + """Get statistics for top referrers.""" + return ( + Profile.objects.annotate( + total_signups=Count("referrals"), + total_enrollments=Count( + "referrals__user__enrollments", filter=Q(referrals__user__enrollments__status="approved") + ), + total_clicks=Count( + "referrals__user__webrequest", filter=Q(referrals__user__webrequest__path__contains="ref=") + ), + ) + .filter(total_signups__gt=0) + .order_by("-total_signups")[:10] + ) + + +def referral_leaderboard(request): + """Display the referral leaderboard.""" + top_referrers = get_referral_stats() + return render(request, "web/referral_leaderboard.html", {"top_referrers": top_referrers}) + + +# Goods Views +class GoodsListView(LoginRequiredMixin, generic.ListView): + model = Goods + template_name = "goods/goods_list.html" + context_object_name = "products" + + def get_queryset(self): + return Goods.objects.filter(storefront__teacher=self.request.user) + + +class GoodsDetailView(generic.DetailView): + model = Goods + template_name = "goods/goods_detail.html" + context_object_name = "product" + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + context["product_images"] = self.object.goods_images.all() # Get all images related to the product + context["other_products"] = Goods.objects.exclude(pk=self.object.pk)[:12] # Fetch other products + view_data = WebRequest.objects.filter(path=self.request.path).aggregate(total_views=Coalesce(Sum("count"), 0)) + context["view_count"] = view_data["total_views"] + + # Add cart count for each product + products_with_cart_count = [] + for product in context["other_products"]: + product.cart_count = product.cart_items.count() + products_with_cart_count.append(product) + + context["other_products"] = products_with_cart_count + + return context + + +class GoodsCreateView(LoginRequiredMixin, UserPassesTestMixin, generic.CreateView): + model = Goods + form_class = GoodsForm + template_name = "goods/goods_form.html" + + def test_func(self): + return hasattr(self.request.user, "storefront") + + def form_valid(self, form): + form.instance.storefront = self.request.user.storefront + images = self.request.FILES.getlist("images") + product_type = form.cleaned_data.get("product_type") + + # Validate digital product images + if product_type == "digital" and not images: + form.add_error(None, "Digital products require at least one image") + return self.form_invalid(form) + + # Validate image constraints + if len(images) > 8: + form.add_error(None, "Maximum 8 images allowed") + return self.form_invalid(form) + + for img in images: + if img.size > 5 * 1024 * 1024: + form.add_error(None, f"{img.name} exceeds 5MB size limit") + return self.form_invalid(form) + + # Save main product first + super().form_valid(form) + + # Save images after product creation + for image_file in images: + ProductImage.objects.create(goods=self.object, image=image_file) + + return render(self.request, "goods/goods_create_success.html", {"product": self.object}) + + def form_invalid(self, form): + messages.error(self.request, f"Creation failed: {form.errors.as_text()}") + return super().form_invalid(form) + + def get_success_url(self): + return reverse("goods_list") + + +class GoodsUpdateView(LoginRequiredMixin, UserPassesTestMixin, generic.UpdateView): + model = Goods + form_class = GoodsForm + template_name = "goods/goods_update.html" + + # Filter by user's products only + def get_queryset(self): + return Goods.objects.filter(storefront__teacher=self.request.user) + + # Verify ownership + def test_func(self): + return self.get_object().storefront.teacher == self.request.user + + def get_success_url(self): + return reverse("goods_list") + + +class GoodsDeleteView(LoginRequiredMixin, UserPassesTestMixin, DeleteView): + model = Goods + template_name = "goods/goods_confirm_delete.html" + success_url = reverse_lazy("goods_list") + + def test_func(self): + return self.request.user == self.get_object().storefront.teacher + + +def add_goods_to_cart(request, pk): + """Add a product (goods) to the cart.""" + product = get_object_or_404(Goods, pk=pk) + + # Prevent adding out-of-stock items + if product.stock is None or product.stock <= 0: + messages.error(request, f"{product.name} is out of stock and cannot be added to cart.") + return redirect("goods_detail", pk=pk) # Redirect back to product page + + cart = get_or_create_cart(request) + cart_item, created = CartItem.objects.get_or_create(cart=cart, goods=product, defaults={"session": None}) + + if created: + messages.success(request, f"{product.name} added to cart.") + else: + messages.info(request, f"{product.name} is already in your cart.") + + return redirect("cart_view") + + +class GoodsListingView(ListView): + model = Goods + template_name = "goods/goods_listing.html" + context_object_name = "products" + paginate_by = 15 + + def get_queryset(self): + queryset = Goods.objects.all() + store_name = self.request.GET.get("store_name") + product_type = self.request.GET.get("product_type") + category = self.request.GET.get("category") + min_price = self.request.GET.get("min_price") + max_price = self.request.GET.get("max_price") + + if store_name: + queryset = queryset.filter(storefront__name__icontains=store_name) + if product_type: + queryset = queryset.filter(product_type=product_type) + if category: + queryset = queryset.filter(category__icontains=category) + if min_price: + queryset = queryset.filter(price__gte=min_price) + if max_price: + queryset = queryset.filter(price__lte=max_price) + + return queryset + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + context["store_names"] = Storefront.objects.values_list("name", flat=True).distinct() + context["categories"] = Goods.objects.values_list("category", flat=True).distinct() + + # Add cart count for each product + products_with_cart_count = [] + for product in context["products"]: + product.cart_count = product.cart_items.count() + products_with_cart_count.append(product) + + context["products"] = products_with_cart_count + + return context + + +# Order Management +class OrderManagementView(LoginRequiredMixin, UserPassesTestMixin, generic.ListView): + model = Order + template_name = "orders/order_management.html" + context_object_name = "orders" + paginate_by = 20 + + def test_func(self): + storefront = get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"]) + return self.request.user == storefront.teacher + + def get_queryset(self): + queryset = Order.objects.filter(items__goods__storefront__store_slug=self.kwargs["store_slug"]).distinct() + + # Get status from request and filter + selected_status = self.request.GET.get("status") + if selected_status and selected_status != "all": + queryset = queryset.filter(status=selected_status) + + return queryset + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + context["statuses"] = Order.STATUS_CHOICES # Directly from model + context["selected_status"] = self.request.GET.get("status", "") + return context + + +class OrderDetailView(LoginRequiredMixin, generic.DetailView): + model = Order + template_name = "orders/order_detail.html" + context_object_name = "order" + + +@login_required +@require_POST +def update_order_status(request, item_id): + order = get_object_or_404(Order, id=item_id, user=request.user) + new_status = request.POST.get("status").lower() # Convert to lowercase for consistency + + # Define allowed statuses inside the function + VALID_STATUSES = ["draft", "pending", "processing", "shipped", "completed", "cancelled", "refunded"] + + if new_status not in VALID_STATUSES: + messages.error(request, "Invalid status.") + return redirect("order_detail", pk=item_id) + + order.status = new_status + order.save() + messages.success(request, "Order status updated successfully.") + return redirect("order_detail", pk=item_id) + + +# Analytics +class StoreAnalyticsView(LoginRequiredMixin, UserPassesTestMixin, generic.TemplateView): + template_name = "analytics/analytics_dashboard.html" + + def test_func(self): + storefront = get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"]) + return self.request.user == storefront.teacher + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + storefront = get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"]) + + # Store-specific analytics + orders = Order.objects.filter(storefront=storefront, status="completed") + + context.update( + { + "total_sales": orders.count(), + "total_revenue": orders.aggregate(Sum("total_price"))["total_price__sum"] or 0, + "top_products": OrderItem.objects.filter(order__storefront=storefront) + .values("goods__name") + .annotate(total_sold=Sum("quantity")) + .order_by("-total_sold")[:5], + "storefront": storefront, + } + ) + return context + + +class AdminMerchAnalyticsView(LoginRequiredMixin, UserPassesTestMixin, generic.TemplateView): + template_name = "analytics/admin_analytics.html" + + def test_func(self): + return self.request.user.is_staff + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + + # Platform-wide analytics + context.update( + { + "total_sales": Order.objects.filter(status="completed").count(), + "total_revenue": Order.objects.filter(status="completed").aggregate(Sum("total_price"))[ + "total_price__sum" + ] + or 0, + "top_storefronts": Storefront.objects.annotate(total_sales=Count("goods__orderitem")).order_by( + "-total_sales" + )[:5], + } + ) + return context + + +@login_required +def sales_analytics(request): + """View for displaying sales analytics.""" + storefront = get_object_or_404(Storefront, teacher=request.user) + + # Get completed orders for this storefront + orders = Order.objects.filter(storefront=storefront, status="completed") + + # Calculate metrics + total_revenue = orders.aggregate(total=Sum("total_price"))["total"] or 0 + total_orders = orders.count() + + # Placeholder conversion rate (to be implemented properly later) + conversion_rate = 0.00 # Temporary placeholder + + # Best selling products + best_selling_products = ( + OrderItem.objects.filter(order__storefront=storefront) + .values("goods__name") + .annotate(total_sold=Sum("quantity")) + .order_by("-total_sold")[:5] + ) + + context = { + "total_revenue": total_revenue, + "total_orders": total_orders, + "conversion_rate": conversion_rate, + "best_selling_products": best_selling_products, + } + return render(request, "analytics/analytics_dashboard.html", context) + + +@login_required +def sales_data(request): + # Get the user's storefront + storefront = get_object_or_404(Storefront, teacher=request.user) + + # Define valid statuses for metrics (e.g., include "completed" and "shipped") + valid_statuses = ["completed", "shipped"] + orders = Order.objects.filter(storefront=storefront, status__in=valid_statuses) + + # Calculate total revenue + total_revenue = orders.aggregate(total=Sum("total_price"))["total"] or 0 + + # Calculate total orders + total_orders = orders.count() + + # Calculate conversion rate (orders / visits * 100) + total_visits = WebRequest.objects.filter(path__contains="ref=").count() # Adjust based on visit tracking + conversion_rate = (total_orders / total_visits * 100) if total_visits > 0 else 0.00 + + # Get best-selling products + best_selling_products = ( + OrderItem.objects.filter(order__storefront=storefront, order__status__in=valid_statuses) + .values("goods__name") + .annotate(total_sold=Sum("quantity")) + .order_by("-total_sold")[:5] + ) + + # Prepare response data + data = { + "total_revenue": float(total_revenue), + "total_orders": total_orders, + "conversion_rate": round(conversion_rate, 2), + "best_selling_products": list(best_selling_products), + } + return JsonResponse(data) + + +class StorefrontCreateView(LoginRequiredMixin, CreateView): + model = Storefront + form_class = StorefrontForm + template_name = "storefront/storefront_form.html" + success_url = "/dashboard/teacher/" + + def dispatch(self, request, *args, **kwargs): + if Storefront.objects.filter(teacher=request.user).exists(): + return redirect("storefront_update", store_slug=request.user.storefront.store_slug) + return super().dispatch(request, *args, **kwargs) + + def form_valid(self, form): + form.instance.teacher = self.request.user # Set the teacher field to the current user + return super().form_valid(form) + + +class StorefrontUpdateView(LoginRequiredMixin, UpdateView): + model = Storefront + form_class = StorefrontForm + template_name = "storefront/storefront_form.html" + success_url = "/dashboard/teacher/" + + def get_object(self): + return get_object_or_404(Storefront, teacher=self.request.user) + + +class StorefrontDetailView(LoginRequiredMixin, generic.DetailView): + model = Storefront + template_name = "storefront/storefront_detail.html" + context_object_name = "storefront" + + def get_object(self): + return get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"]) + + +def success_story_list(request): + """View for listing published success stories.""" + success_stories = SuccessStory.objects.filter(status="published").order_by("-published_at") + + # Paginate results + paginator = Paginator(success_stories, 9) # 9 stories per page + page_number = request.GET.get("page", 1) + page_obj = paginator.get_page(page_number) + + context = { + "success_stories": page_obj, + "is_paginated": paginator.num_pages > 1, + "page_obj": page_obj, + } + return render(request, "success_stories/list.html", context) + + +def success_story_detail(request, slug): + """View for displaying a single success story.""" + success_story = get_object_or_404(SuccessStory, slug=slug, status="published") + + # Get related success stories (same author or similar content) + related_stories = ( + SuccessStory.objects.filter(status="published").exclude(id=success_story.id).order_by("-published_at")[:3] + ) + + context = { + "success_story": success_story, + "related_stories": related_stories, + } + return render(request, "success_stories/detail.html", context) + + +@login_required +def create_success_story(request): + """View for creating a new success story.""" + if request.method == "POST": + form = SuccessStoryForm(request.POST, request.FILES) + if form.is_valid(): + success_story = form.save(commit=False) + success_story.author = request.user + success_story.save() + messages.success(request, "Success story created successfully!") + return redirect("success_story_detail", slug=success_story.slug) + else: + form = SuccessStoryForm() + + context = { + "form": form, + } + return render(request, "success_stories/create.html", context) + + +@login_required +def edit_success_story(request, slug): + """View for editing an existing success story.""" + success_story = get_object_or_404(SuccessStory, slug=slug, author=request.user) + + if request.method == "POST": + form = SuccessStoryForm(request.POST, request.FILES, instance=success_story) + if form.is_valid(): + form.save() + messages.success(request, "Success story updated successfully!") + return redirect("success_story_detail", slug=success_story.slug) + else: + form = SuccessStoryForm(instance=success_story) + + context = { + "form": form, + "success_story": success_story, + "is_edit": True, + } + return render(request, "success_stories/create.html", context) + + +@login_required +def delete_success_story(request, slug): + """View for deleting a success story.""" + success_story = get_object_or_404(SuccessStory, slug=slug, author=request.user) + + if request.method == "POST": + success_story.delete() + messages.success(request, "Success story deleted successfully!") + return redirect("success_story_list") + + context = { + "success_story": success_story, + } + return render(request, "success_stories/delete_confirm.html", context) + + +def gsoc_landing_page(request): + """ + Renders the GSOC landing page with top GitHub contributors + based on merged pull requests + """ + import logging + + import requests + from django.conf import settings + + # Initialize an empty list for contributors in case the GitHub API call fails + top_contributors = [] + + # GitHub API URL for the education-website repository + github_repo_url = "https://api.github.com/repos/alphaonelabs/education-website" + + # Users to exclude from the contributor list (bots and automated users) + excluded_users = ["A1L13N", "dependabot[bot]"] + + try: + # Fetch contributors from GitHub API + headers = {} + # Check if GitHub token is configured + if hasattr(settings, "GITHUB_TOKEN") and settings.GITHUB_TOKEN: + headers["Authorization"] = f"token {settings.GITHUB_TOKEN}" + + # Get all closed pull requests - we'll filter for merged ones in code + # The GitHub API doesn't have a direct 'merged' filter in the query params + # so we get all closed PRs and then check the 'merged_at' field + pull_requests_response = requests.get( + f"{github_repo_url}/pulls", + params={ + "state": "closed", # closed PRs could be either merged or just closed + "sort": "updated", + "direction": "desc", + "per_page": 100, + }, + headers=headers, + timeout=5, + ) + + # Check for rate limiting + if pull_requests_response.status_code == 403 and "X-RateLimit-Remaining" in pull_requests_response.headers: + remaining = pull_requests_response.headers.get("X-RateLimit-Remaining") + if remaining == "0": + reset_time = int(pull_requests_response.headers.get("X-RateLimit-Reset", 0)) + reset_datetime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(reset_time)) + logging.warning(f"GitHub API rate limit exceeded. Resets at {reset_datetime}") + + if pull_requests_response.status_code == 200: + pull_requests = pull_requests_response.json() + + # Create a map of contributors with their PR count + contributor_stats = defaultdict( + lambda: {"merged_pr_count": 0, "avatar_url": "", "profile_url": "", "prs_url": ""} + ) + + # Process each pull request + for pr in pull_requests: + # Check if the PR was merged + if pr.get("merged_at"): + username = pr["user"]["login"] + + # Skip excluded users + if username in excluded_users: + continue + + contributor_stats[username]["merged_pr_count"] += 1 + contributor_stats[username]["avatar_url"] = pr["user"]["avatar_url"] + contributor_stats[username]["profile_url"] = pr["user"]["html_url"] + # Add a direct link to the user's PRs for this repository + base_url = "https://github.com/alphaonelabs/education-website/pulls" + query = f"?q=is:pr+author:{username}+is:merged" + contributor_stats[username]["prs_url"] = base_url + query + contributor_stats[username]["username"] = username + + # Convert to list and sort by PR count + top_contributors = [v for k, v in contributor_stats.items()] + top_contributors.sort(key=lambda x: x["merged_pr_count"], reverse=True) + + # Get top 10 contributors + top_contributors = top_contributors[:10] + + except Exception as e: + logging.error(f"Error fetching GitHub contributors: {str(e)}") + + context = {"top_contributors": top_contributors} + + return render(request, "gsoc_landing_page.html", context) + + +def whiteboard(request): + return render(request, "whiteboard.html") + + +def graphing_calculator(request): + return render(request, "graphing_calculator.html") + + +def meme_list(request): + memes = Meme.objects.all().order_by("-created_at") + subjects = Subject.objects.filter(memes__isnull=False).distinct() + # Filter by subject if provided + subject_filter = request.GET.get("subject") + if subject_filter: + memes = memes.filter(subject__slug=subject_filter) + paginator = Paginator(memes, 12) # Show 12 memes per page + page_number = request.GET.get("page", 1) + page_obj = paginator.get_page(page_number) + + return render(request, "memes.html", {"memes": page_obj, "subjects": subjects, "selected_subject": subject_filter}) + + +def meme_detail(request: HttpRequest, slug: str) -> HttpResponse: + meme = get_object_or_404(Meme, slug=slug) + return render(request, "meme_detail.html", {"meme": meme}) + + +@login_required +def add_meme(request): + if request.method == "POST": + form = MemeForm(request.POST, request.FILES) + if form.is_valid(): + meme = form.save(commit=False) # The form handles subject creation logic internally + meme.uploader = request.user + meme.save() + messages.success(request, "Your meme has been uploaded successfully!") + return redirect("meme_list") + else: + form = MemeForm() + subjects = Subject.objects.all().order_by("name") + return render(request, "add_meme.html", {"form": form, "subjects": subjects}) + + +@login_required +def team_goals(request): + """List all team goals the user is part of or has created.""" + user_goals = ( + TeamGoal.objects.filter(Q(creator=request.user) | Q(members__user=request.user)) + .distinct() + .order_by("-created_at") + ) + + paginator = Paginator(user_goals, 10) + page_number = request.GET.get("page") + page_obj = paginator.get_page(page_number) + + pending_invites = TeamInvite.objects.filter(recipient=request.user, status="pending").select_related( + "goal", "sender" + ) + + context = { + "goals": page_obj, + "pending_invites": pending_invites, + "is_paginated": paginator.num_pages > 1, + } + return render(request, "teams/list.html", context) + + +@login_required +def create_team_goal(request): + """Create a new team goal.""" + if request.method == "POST": + form = TeamGoalForm(request.POST) + if form.is_valid(): + with transaction.atomic(): + goal = form.save(commit=False) + goal.creator = request.user + goal.save() + + # Add creator as a member + TeamGoalMember.objects.create(team_goal=goal, user=request.user, role="leader") + + messages.success(request, "Team goal created successfully!") + return redirect("team_goal_detail", goal_id=goal.id) + else: + form = TeamGoalForm() + + return render(request, "teams/create.html", {"form": form}) + + +@login_required +def team_goal_detail(request, goal_id): + """View and manage a specific team goal.""" + goal = get_object_or_404(TeamGoal.objects.prefetch_related("members__user"), id=goal_id) + + # Check if user has access to this goal + if not (goal.creator == request.user or goal.members.filter(user=request.user).exists()): + messages.error(request, "You do not have access to this team goal.") + return redirect("team_goals") + + # Get existing team members to exclude from invitation + existing_members = goal.members.values_list("user_id", flat=True) + + # Handle inviting new members + if request.method == "POST": + form = TeamInviteForm(request.POST) + if form.is_valid(): + # Check for existing invites using the validated User object + if TeamInvite.objects.filter( + goal__id=goal.id, recipient=form.cleaned_data["recipient"] # Changed to use User object + ).exists(): + messages.warning(request, "An invite for this user is already pending.") + return redirect("team_goal_detail", goal_id=goal.id) + invite = form.save(commit=False) + invite.sender = request.user + invite.goal = goal + invite.save() + messages.success(request, f"Invitation sent to {invite.recipient.email}!") + notify_team_invite(invite) + return redirect("team_goal_detail", goal_id=goal.id) + + else: + form = TeamInviteForm() + + # Get users that can be invited (exclude existing members and the creator) + available_users = User.objects.exclude(id__in=list(existing_members) + [goal.creator.id]).values( + "id", "username", "email" + ) + + context = { + "goal": goal, + "invite_form": form, + "user_is_leader": goal.members.filter(user=request.user, role="leader").exists(), + "available_users": available_users, + } + return render(request, "teams/detail.html", context) + + +@login_required +def accept_team_invite(request, invite_id): + """Accept a team invitation.""" + invite = get_object_or_404( + TeamInvite.objects.select_related("goal"), id=invite_id, recipient=request.user, status="pending" + ) + + # Create team member using get_or_create to avoid race conditions + member, created = TeamGoalMember.objects.get_or_create( + team_goal=invite.goal, user=request.user, defaults={"role": "member"} + ) + + if not created: + messages.info(request, f"You are already a member of {invite.goal.title}.") + else: + messages.success(request, f"You have joined {invite.goal.title}!") + + # Update invite status + invite.status = "accepted" + invite.responded_at = timezone.now() + invite.save() + + notify_team_invite_response(invite) + return redirect("team_goal_detail", goal_id=invite.goal.id) + + +@login_required +def decline_team_invite(request, invite_id): + """Decline a team invitation.""" + invite = get_object_or_404(TeamInvite, id=invite_id, recipient=request.user, status="pending") + + invite.status = "declined" + invite.responded_at = timezone.now() + invite.save() + + notify_team_invite_response(invite) + messages.info(request, f"You have declined to join {invite.goal.title}.") + return redirect("team_goals") + + +@login_required +def edit_team_goal(request, goal_id): + """Edit an existing team goal.""" + goal = get_object_or_404(TeamGoal, id=goal_id) + + # Check if user is the creator or a leader + if not (goal.creator == request.user or goal.members.filter(user=request.user, role="leader").exists()): + messages.error(request, "You don't have permission to edit this team goal.") + return redirect("team_goal_detail", goal_id=goal_id) + + if request.method == "POST": + form = TeamGoalForm(request.POST, instance=goal) + if form.is_valid(): + # Validate that deadline is not in the past + if form.cleaned_data["deadline"] < timezone.now(): + form.add_error("deadline", "Deadline cannot be in the past.") + context = { + "form": form, + "goal": goal, + "is_edit": True, + } + return render(request, "teams/create.html", context) + form.save() + messages.success(request, "Team goal updated successfully!") + return redirect("team_goal_detail", goal_id=goal.id) + else: + form = TeamGoalForm(instance=goal) + + context = { + "form": form, + "goal": goal, + "is_edit": True, + } + return render(request, "teams/create.html", context) + + +@login_required +def mark_team_contribution(request, goal_id): + """Allow a team member to mark their contribution as complete.""" + goal = get_object_or_404(TeamGoal, id=goal_id) + + # Find the current user's membership in this goal + member = goal.members.filter(user=request.user).first() + + if not member: + messages.error(request, "You are not a member of this team goal.") + return redirect("team_goal_detail", goal_id=goal_id) + + if member.completed: + messages.info(request, "Your contribution is already marked as complete.") + return redirect("team_goal_detail", goal_id=goal_id) + + # Mark the user's contribution as complete + member.mark_completed() + messages.success(request, "Your contribution has been marked as complete.") + notify_team_goal_completion(goal, request.user) + return redirect("team_goal_detail", goal_id=goal_id) + + +@login_required +def remove_team_member(request, goal_id, member_id): + """Remove a member from a team goal.""" + goal = get_object_or_404(TeamGoal, id=goal_id) + + # Check if user is the creator or a leader + if not (goal.creator == request.user or goal.members.filter(user=request.user, role="leader").exists()): + messages.error(request, "You don't have permission to remove members.") + return redirect("team_goal_detail", goal_id=goal_id) + + member = get_object_or_404(TeamGoalMember, id=member_id, team_goal=goal) + + # Prevent removing the creator + if member.user == goal.creator: + messages.error(request, "The team creator cannot be removed.") + return redirect("team_goal_detail", goal_id=goal_id) + + member.delete() + messages.success(request, f"{member.user.username} has been removed from the team.") + return redirect("team_goal_detail", goal_id=goal_id) + + +@login_required +def submit_team_proof(request, team_goal_id): + team_goal = get_object_or_404(TeamGoal, id=team_goal_id) + member = get_object_or_404(TeamGoalMember, team_goal=team_goal, user=request.user) + + if request.method == "POST": + form = TeamGoalCompletionForm(request.POST, request.FILES, instance=member) + if form.is_valid(): + form.save() + if not member.completed: + member.mark_completed() + return redirect("team_goal_detail", goal_id=team_goal.id) # Fixed here + + else: + form = TeamGoalCompletionForm(instance=member) + + return render(request, "teams/submit_proof.html", {"form": form, "team_goal": team_goal}) + + +@login_required +def delete_team_goal(request, goal_id): + """Delete a team goal.""" + goal = get_object_or_404(TeamGoal, id=goal_id) + + # Only creator can delete the goal + if request.user != goal.creator: + messages.error(request, "Only the creator can delete this team goal.") + return redirect("team_goal_detail", goal_id=goal_id) + + if request.method == "POST": + goal.delete() + messages.success(request, "Team goal has been deleted.") + return redirect("team_goals") + + return render(request, "teams/delete_confirm.html", {"goal": goal}) + + +@login_required +def virtual_classroom_list(request): + """View to list all virtual classrooms for the current user.""" + classrooms = VirtualClassroom.objects.filter(teacher=request.user) + return render( + request, + "virtual_classroom/list.html", + {"classrooms": classrooms, "user": request.user}, # Pass the user object which includes the profile + ) + + +@login_required +@require_POST +def join_global_virtual_classroom(request): + """Join (or create) the global virtual classroom and redirect to it.""" + + teacher = User.objects.filter(is_staff=True, is_active=True).order_by("-is_superuser", "date_joined").first() + + if not teacher: + messages.error(request, "No teacher is available to host the global virtual classroom yet.") + return redirect("index") + + classroom = ( + VirtualClassroom.objects.filter(name__iexact="Global Virtual Classroom", course__isnull=True) + .order_by("-created_at") + .first() + ) + + if not classroom: + classroom = VirtualClassroom.objects.create( + name="Global Virtual Classroom", + teacher=teacher, + is_active=True, + max_students=200, + ) + + # Ensure customization exists + VirtualClassroomCustomization.objects.get_or_create(classroom=classroom) + + # Add the current user as a participant + VirtualClassroomParticipant.objects.get_or_create(user=request.user, classroom=classroom) + + messages.success(request, "You're in! Welcome to the global virtual classroom.") + return redirect("virtual_classroom_detail", classroom_id=classroom.id) + + +@login_required +def virtual_classroom_create(request): + """View to create a new virtual classroom.""" + if request.method == "POST": + form = VirtualClassroomForm(request.POST, user=request.user) + if form.is_valid(): + classroom = form.save(commit=False) + classroom.teacher = request.user + classroom.save() + + # Create default customization settings + VirtualClassroomCustomization.objects.get_or_create( + classroom=classroom, + defaults={ + "wall_color": "#E6E2D7", + "floor_color": "#C7B299", + "desk_color": "#8B4513", + "chair_color": "#4B0082", + "board_color": "#005C53", + "number_of_rows": 5, + "desks_per_row": 6, + "has_plants": True, + "has_windows": True, + "has_bookshelf": True, + "has_clock": True, + "has_carpet": True, + }, + ) + + messages.success(request, "Virtual classroom created successfully!") + return redirect("virtual_classroom_customize", classroom_id=classroom.id) + else: + form = VirtualClassroomForm(user=request.user) + + return render(request, "virtual_classroom/create.html", {"form": form}) + + +@login_required +def virtual_classroom_customize(request, classroom_id): + """View to customize a virtual classroom.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id, teacher=request.user) + + # Get or create customization settings + customization, created = VirtualClassroomCustomization.objects.get_or_create(classroom=classroom) + + if request.method == "POST": + form = VirtualClassroomCustomizationForm(request.POST, instance=customization) + if form.is_valid(): + form.save() + messages.success(request, "Classroom customization saved successfully!") + return redirect("virtual_classroom_detail", classroom_id=classroom.id) + else: + form = VirtualClassroomCustomizationForm(instance=customization) + + return render(request, "virtual_classroom/customize.html", {"form": form, "classroom": classroom}) + + +@login_required +def virtual_classroom_detail(request, classroom_id): + """View to display a virtual classroom.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id) + + # Check if user is teacher or enrolled student + is_teacher = request.user == classroom.teacher + is_enrolled = False + + if classroom.course: + # For classrooms with a course, check course enrollments + is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists() + else: + # For standalone classrooms, check VirtualClassroomParticipant table + is_enrolled = VirtualClassroomParticipant.objects.filter(classroom=classroom, user=request.user).exists() + + if not (is_teacher or is_enrolled): + messages.error(request, "You do not have access to this virtual classroom.") + if classroom.course: + return redirect("course_detail", slug=classroom.course.slug) + else: + return redirect("virtual_classroom_list") + + # Get or create customization settings to prevent DoesNotExist errors + customization, created = VirtualClassroomCustomization.objects.get_or_create( + classroom=classroom, + defaults={ + "wall_color": "#E6E2D7", + "floor_color": "#C7B299", + "desk_color": "#8B4513", + "chair_color": "#4B0082", + "board_color": "#005C53", + "number_of_rows": 5, + "desks_per_row": 6, + "has_plants": True, + "has_windows": True, + "has_bookshelf": True, + "has_clock": True, + "has_carpet": True, + }, + ) + + if request.method == "POST" and request.headers.get("X-Requested-With") == "XMLHttpRequest": + if not is_teacher: # Only teachers can customize + return JsonResponse({"status": "error", "message": "Only teachers can customize the classroom"}, status=403) + + try: + data = json.loads(request.body.decode("utf-8") or "{}") + + # Update customization settings + customization.wall_color = data.get("wall_color", customization.wall_color) + customization.floor_color = data.get("floor_color", customization.floor_color) + customization.desk_color = data.get("desk_color", customization.desk_color) + customization.chair_color = data.get("chair_color", customization.chair_color) + customization.board_color = data.get("board_color", customization.board_color) + customization.number_of_rows = data.get("number_of_rows", customization.number_of_rows) + customization.desks_per_row = data.get("desks_per_row", customization.desks_per_row) + customization.has_plants = data.get("has_plants", customization.has_plants) + customization.has_windows = data.get("has_windows", customization.has_windows) + customization.has_bookshelf = data.get("has_bookshelf", customization.has_bookshelf) + customization.has_clock = data.get("has_clock", customization.has_clock) + customization.has_carpet = data.get("has_carpet", customization.has_carpet) + + customization.save() + return JsonResponse({"status": "success"}) + except json.JSONDecodeError: + return JsonResponse({"status": "error", "message": "Invalid JSON data"}, status=400) + except Exception: + # Log the detailed exception for debugging + logger.exception("Error in virtual_classroom_detail customization") + return JsonResponse({"status": "error", "message": "An internal error occurred"}, status=500) + + # Get participants for the classroom + participants = VirtualClassroomParticipant.objects.filter(classroom=classroom).select_related("user") + + return render( + request, + "virtual_classroom/index.html", + { + "classroom": classroom, + "customization": customization, + "is_teacher": is_teacher, + "is_enrolled": is_enrolled, + "participants": participants, + }, + ) + + +@login_required +def virtual_classroom_edit(request, classroom_id): + """View to edit a virtual classroom.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id, teacher=request.user) + + if request.method == "POST": + form = VirtualClassroomForm(request.POST, instance=classroom, user=request.user) + if form.is_valid(): + form.save() + messages.success(request, "Virtual classroom updated successfully!") + return redirect("virtual_classroom_detail", classroom_id=classroom.id) + else: + form = VirtualClassroomForm(instance=classroom, user=request.user) + + return render(request, "virtual_classroom/edit.html", {"form": form, "classroom": classroom}) + + +@login_required +def virtual_classroom_delete(request, classroom_id): + """View to delete a virtual classroom.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id, teacher=request.user) + + if request.method == "POST": + classroom.delete() + messages.success(request, "Virtual classroom deleted successfully!") + return redirect("virtual_classroom_list") + + return render(request, "virtual_classroom/delete.html", {"classroom": classroom}) + + +@login_required +def classroom_blackboard(request, classroom_id): + """View for the classroom blackboard interaction.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id) + + # Check if user is teacher or enrolled student + is_teacher = request.user == classroom.teacher + is_enrolled = False + if classroom.course: + is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists() + + if not (is_teacher or is_enrolled): + messages.error(request, "You do not have access to this virtual classroom.") + return redirect("virtual_classroom_list") + + return render( + request, + "virtual_classroom/blackboard.html", + {"classroom": classroom, "is_teacher": is_teacher, "is_enrolled": is_enrolled}, + ) + + +@login_required +def classroom_student_desk(request, classroom_id, seat_id): + """View for individual student desk interaction.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id) + + # Check if user is teacher or enrolled student + is_teacher = request.user == classroom.teacher + is_enrolled = False + if classroom.course: + is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists() + + if not (is_teacher or is_enrolled): + messages.error(request, "You do not have access to this virtual classroom.") + return redirect("virtual_classroom_list") + + return render( + request, + "virtual_classroom/student_desk.html", + {"classroom": classroom, "seat_id": seat_id, "is_teacher": is_teacher, "is_enrolled": is_enrolled}, + ) + + +@login_required +@require_POST +def reset_attendance(request, classroom_id): + """Reset today's attendance for a classroom.""" + try: + classroom = get_object_or_404(VirtualClassroom, id=classroom_id) + + # Check if user is the teacher + if request.user != classroom.teacher: + messages.error(request, "Only the teacher can reset attendance.") + return redirect("classroom_attendance", classroom_id=classroom_id) + + # Get today's session and delete all attendance records + today = timezone.now().date() + today_start = timezone.make_aware(datetime.combine(today, datetime.min.time())) + today_end = timezone.make_aware(datetime.combine(today, datetime.max.time())) + + if classroom.course: + # For classrooms with courses, find and delete attendance for today's session + session = Session.objects.filter( + course=classroom.course, start_time__range=(today_start, today_end) + ).first() + + if session: + SessionAttendance.objects.filter(session=session).delete() + else: + # For classrooms without courses, find and delete standalone session attendance + session = Session.objects.filter( + title=f"Class on {today.strftime('%Y-%m-%d')}", start_time__range=(today_start, today_end) + ).first() + + if session: + SessionAttendance.objects.filter(session=session).delete() + + messages.success(request, "Today's attendance has been reset.") + return redirect("classroom_attendance", classroom_id=classroom_id) + + except Exception: + messages.error(request, "An error occurred while resetting attendance.") + return redirect("classroom_attendance", classroom_id=classroom_id) + + +@login_required +def classroom_attendance(request, classroom_id): + """View for managing classroom attendance.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id) + + # Check if user is teacher or enrolled student + is_teacher = request.user == classroom.teacher + is_enrolled = False + + # Get all enrolled students + enrolled_students = [] + if classroom.course: + is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists() + enrolled_students = ( + User.objects.filter(enrollments__course=classroom.course, enrollments__status="approved") + .select_related("profile") + .order_by("first_name", "last_name") + .distinct() + ) + else: + # For classrooms without a course, everyone is "enrolled" + is_enrolled = True + # Get users who are participants in this classroom (excluding teacher) + participant_user_ids = VirtualClassroomParticipant.objects.filter(classroom=classroom).values_list( + "user_id", flat=True + ) + + enrolled_students = ( + User.objects.filter(id__in=participant_user_ids) + .exclude(id=classroom.teacher.id) + .select_related("profile") + .order_by("first_name", "last_name") + .distinct() + ) + + if not (is_teacher or is_enrolled): + messages.error(request, "You do not have access to this virtual classroom.") + return redirect("virtual_classroom_list") + + # Get today's attendance records + today = timezone.now().date() + today_start = timezone.make_aware(datetime.combine(today, datetime.min.time())) + today_end = timezone.make_aware(datetime.combine(today, datetime.max.time())) + + # Get today's session + if classroom.course: + session = Session.objects.filter(course=classroom.course, start_time__range=(today_start, today_end)).first() + else: + session = Session.objects.filter( + title=f"Class on {today.strftime('%Y-%m-%d')}", start_time__range=(today_start, today_end) + ).first() + + # Get attendance records for today's session + attendance_records = ( + SessionAttendance.objects.filter(session=session, status="present").select_related("student") if session else [] + ) + + present_students = [record.student for record in attendance_records] + + context = { + "classroom": classroom, + "is_teacher": is_teacher, + "is_enrolled": is_enrolled, + "enrolled_students": enrolled_students, + "present_students": present_students, + "teacher": classroom.teacher, + } + + return render(request, "virtual_classroom/attendance.html", context) + + +@login_required +def update_student_attendance(request, classroom_id): + """View to update student attendance.""" + classroom = get_object_or_404(VirtualClassroom, id=classroom_id) + + # Check if user is teacher or enrolled student + is_teacher = request.user == classroom.teacher + is_enrolled = False + if classroom.course: + is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists() + else: + is_enrolled = VirtualClassroomParticipant.objects.filter( + classroom=classroom, + user=request.user, + ).exists() + + if not (is_teacher or is_enrolled): + messages.error(request, "You do not have access to this virtual classroom.") + return redirect("virtual_classroom_list") + + if request.method == "POST": + try: + # Attempt to parse JSON payload; if it fails assume regular form submission + try: + data = json.loads(request.body.decode("utf-8") or "{}") + except json.JSONDecodeError: + data = {} + + student_id = data.get("student_id") or request.POST.get("student_id") + status = data.get("status") or request.POST.get("status") or "present" + + # If student_id is still missing, default to the current user (self-marking) + if not student_id: + student_id = request.user.id + + if not status: + status = "present" + + # Validate status value + allowed_status = {"present", "absent", "late", "excused"} + if status not in allowed_status: + return JsonResponse({"status": "error", "message": "Invalid status value"}, status=400) + + student = get_object_or_404(User, id=student_id) + + # Check if student is enrolled in the classroom + if classroom.course: + if not classroom.course.enrollments.filter(student=student, status="approved").exists(): + return JsonResponse( + {"status": "error", "message": "Student is not enrolled in this classroom"}, + status=400, + ) + else: + if not VirtualClassroomParticipant.objects.filter(classroom=classroom, user=student).exists(): + return JsonResponse( + {"status": "error", "message": "Student is not enrolled in this classroom"}, + status=400, + ) + + # Get today's session + today = timezone.now().date() + today_start = timezone.make_aware(datetime.combine(today, datetime.min.time())) + today_end = timezone.make_aware(datetime.combine(today, datetime.max.time())) + + if classroom.course: + session = Session.objects.filter( + course=classroom.course, start_time__range=(today_start, today_end) + ).first() + else: + session = Session.objects.filter( + title=f"Class on {today.strftime('%Y-%m-%d')}", start_time__range=(today_start, today_end) + ).first() + + if not session: + # Automatically create today's session if it doesn't exist + if classroom.course: + session = Session.objects.create( + course=classroom.course, + title=f"Class on {today.strftime('%Y-%m-%d')}", + start_time=today_start, + end_time=today_end, + ) + else: + session = Session.objects.create( + title=f"Class on {today.strftime('%Y-%m-%d')}", + start_time=today_start, + end_time=today_end, + course=None, + ) + + # Update or create attendance record + attendance, created = SessionAttendance.objects.get_or_create( + session=session, student=student, defaults={"status": status} + ) + + if not created: + attendance.status = status + attendance.save() + + is_ajax = request.headers.get("X-Requested-With") == "XMLHttpRequest" + if is_ajax: + return JsonResponse({"status": "success"}) + + messages.success(request, "Attendance marked successfully.") + return redirect("classroom_attendance", classroom_id=classroom_id) + except json.JSONDecodeError: + return JsonResponse({"status": "error", "message": "Invalid JSON data"}, status=400) + except Exception: + # Log the detailed exception for debugging + logger.exception("Error in update_student_attendance") + return JsonResponse({"status": "error", "message": "An internal error occurred"}, status=500) + + return JsonResponse({"status": "error", "message": "Invalid request method"}, status=400) + + +@login_required +def get_student_attendance(request): + """Get a student's attendance data for a specific course.""" + if not request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"success": False, "message": "Invalid request"}, status=400) + + student_id = request.GET.get("student_id") + course_id = request.GET.get("course_id") + + if not all([student_id, course_id]): + return JsonResponse({"success": False, "message": "Missing required parameters"}, status=400) + + try: + course = Course.objects.get(id=course_id) + student = User.objects.get(id=student_id) + + # Check if user is authorized (must be the course teacher) + if request.user != course.teacher: + return JsonResponse( + {"success": False, "message": "Unauthorized: Only the course teacher can view this data"}, status=403 + ) + + # Get all attendance records for this student in this course + attendance_records = SessionAttendance.objects.filter(student=student, session__course=course).select_related( + "session" + ) + + # Format the data for the frontend + attendance_data = {} + for record in attendance_records: + attendance_data[record.session.id] = { + "status": record.status, + "notes": record.notes, + "created_at": record.created_at.isoformat(), + "updated_at": record.updated_at.isoformat(), + } + + return JsonResponse({"success": True, "attendance": attendance_data}) + + except Course.DoesNotExist: + return JsonResponse({"success": False, "message": "Course not found"}, status=404) + except User.DoesNotExist: + return JsonResponse({"success": False, "message": "Student not found"}, status=404) + except Exception: + return JsonResponse({"success": False, "message": "Error: get_student_attendance"}, status=500) + + +@login_required +@teacher_required +def add_student_to_course(request, slug): + course = get_object_or_404(Course, slug=slug) + if course.teacher != request.user: + return HttpResponseForbidden("You are not authorized to enroll students in this course.") + + # Check if course is full + if course.max_students and course.enrollments.count() >= course.max_students: + messages.error(request, "This course is full. Cannot enroll more students.") + return redirect("course_detail", slug=course.slug) + + if request.method == "POST": + form = StudentEnrollmentForm(request.POST) + if form.is_valid(): + email = form.cleaned_data["email"] + first_name = form.cleaned_data["first_name"] + last_name = form.cleaned_data["last_name"] + + # Try to find existing user + student = User.objects.filter(email=email).first() + + if student: + # Check if student is already enrolled + if Enrollment.objects.filter(course=course, student=student).exists(): + form.add_error(None, "This student is already enrolled in the course.") + else: + # Enroll existing student + enrollment = Enrollment.objects.create(course=course, student=student, status="approved") + messages.success(request, f"{student.get_full_name()} has been enrolled in the course.") + + # Send enrollment notifications + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + + # Send enrollment notification email to existing student + context = {"student": student, "course": course, "teacher": request.user, "is_existing_user": True} + html_message = render_to_string("emails/student_enrollment.html", context) + send_mail( + f"You have been enrolled in {course.title}", + f"You have been enrolled in {course.title} " + f"by {request.user.get_full_name() or request.user.username}.", + settings.DEFAULT_FROM_EMAIL, + [email], + html_message=html_message, + fail_silently=False, + ) + return redirect("course_detail", slug=course.slug) + else: + # Create new student account + try: + # Generate a unique username + timestamp = timezone.now().strftime("%Y%m%d%H%M%S") + generated_username = f"user_{timestamp}" + while User.objects.filter(username=generated_username).exists(): + generated_username = f"user_{timestamp}_{get_random_string(6)}" + + # Create new user + random_password = get_random_string(10) + student = User.objects.create_user( + username=generated_username, + email=email, + password=random_password, + first_name=first_name, + last_name=last_name, + ) + student.profile.is_teacher = False + student.profile.save() + + # Enroll the new student + enrollment = Enrollment.objects.create(course=course, student=student, status="approved") + messages.success(request, f"{first_name} {last_name} has been enrolled in the course.") + + # Send enrollment notifications + send_enrollment_confirmation(enrollment) + notify_teacher_new_enrollment(enrollment) + + # Send enrollment notification and password reset link to new student + reset_link = request.build_absolute_uri(reverse("account_reset_password")) + context = { + "student": student, + "course": course, + "teacher": request.user, + "reset_link": reset_link, + "is_existing_user": False, + } + html_message = render_to_string("emails/student_enrollment.html", context) + send_mail( + f"You have been enrolled in {course.title}", + f"You have been enrolled in {course.title} " + f"by {request.user.get_full_name() or request.user.username}. " + f"Please visit {reset_link} to set your password.", + settings.DEFAULT_FROM_EMAIL, + [email], + html_message=html_message, + fail_silently=False, + ) + return redirect("course_detail", slug=course.slug) + except IntegrityError: + form.add_error(None, "Failed to create user account. Please try again.") + else: + form = StudentEnrollmentForm() + + return render(request, "courses/add_student.html", {"form": form, "course": course}) + + +def donate(request): + """Display the donation page with options for one-time donations and subscriptions.""" + # Get recent public donations to display + recent_donations = Donation.objects.filter(status="completed", anonymous=False).order_by("-created_at")[:5] + + # Calculate total donations + total_donations = Donation.objects.filter(status="completed").aggregate(total=Sum("amount"))["total"] or 0 + + # Preset donation amounts for buttons + donation_amounts = [5, 10, 25, 50, 100] + + context = { + "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY, + "recent_donations": recent_donations, + "total_donations": total_donations, + "donation_amounts": donation_amounts, + } + + return render(request, "donate.html", context) + + +@csrf_exempt # Add CSRF exemption for Stripe +def create_donation_payment_intent(request: HttpRequest) -> JsonResponse: + """Create a payment intent for a one-time donation with multiple payment methods.""" + if request.method != "POST": + return JsonResponse({"error": "Invalid request method"}, status=400) + + try: + data = json.loads(request.body) + amount = data.get("amount") + message = data.get("message", "") + anonymous = data.get("anonymous", False) + email = data.get("email", "") + + if not amount or float(amount) <= 0: + return JsonResponse({"error": "Invalid donation amount"}, status=400) + + if not email: + return JsonResponse({"error": "Email is required"}, status=400) + + # Convert amount to cents for Stripe + amount_cents = int(float(amount) * 100) + + # Create a payment intent with multiple payment method types + intent = stripe.PaymentIntent.create( + amount=amount_cents, + currency="usd", + automatic_payment_methods={"enabled": True, "allow_redirects": "always"}, + receipt_email=email, + metadata={ + "donation_type": "one_time", + "user_id": str(request.user.id) if request.user.is_authenticated else None, + "message": message[:100] if message else "", + "anonymous": "true" if anonymous else "false", + "email": email, + }, + ) + + # Create a donation record + donation = Donation.objects.create( + user=request.user if request.user.is_authenticated else None, + email=email, + amount=amount, + donation_type="one_time", + status="pending", + stripe_payment_intent_id=intent.id, + message=message, + anonymous=anonymous, + ) + + return JsonResponse({"clientSecret": intent.client_secret, "donation_id": donation.id}) + + except Exception as e: + # Log the detailed exception for debugging + logger.exception("Error in create_donation_payment_intent: %s", str(e)) + return JsonResponse({"error": "An internal error occurred"}, status=400) + + +@csrf_exempt +def create_donation_subscription(request: HttpRequest) -> JsonResponse: + """Create a subscription for recurring donations with multiple payment methods.""" + if request.method != "POST": + return JsonResponse({"error": "Invalid request method"}, status=400) + + try: + data = json.loads(request.body) + amount = data.get("amount") + message = data.get("message", "") + anonymous = data.get("anonymous", False) + email = data.get("email", "") + + if not amount or float(amount) <= 0: + return JsonResponse({"error": "Invalid donation amount"}, status=400) + + if not email: + return JsonResponse({"error": "Email is required"}, status=400) + + # Convert amount to cents for Stripe + amount_cents = int(float(amount) * 100) + + # Create or get customer + customer = None + # Try to retrieve existing customer for authenticated users + if request.user.is_authenticated: + try: + membership = request.user.membership + if membership.stripe_customer_id: + customer = stripe.Customer.retrieve(membership.stripe_customer_id) + except (UserMembership.DoesNotExist, stripe.error.InvalidRequestError): + # No membership or invalid customer ID + customer = None + + # Create new customer if needed + if not customer: + customer = stripe.Customer.create( + email=email, + metadata={ + "user_id": str(request.user.id) if request.user.is_authenticated else None, + }, + ) + if request.user.is_authenticated: + # Store customer ID in user membership + membership, _ = UserMembership.objects.get_or_create( + user=request.user, defaults={"plan_id": 1, "stripe_customer_id": customer.id} + ) + if not membership.stripe_customer_id: + membership.stripe_customer_id = customer.id + membership.save() + + # Create a PaymentIntent for the first payment with setup_future_usage + payment_intent = stripe.PaymentIntent.create( + amount=amount_cents, + currency="usd", + customer=customer.id, + setup_future_usage="off_session", + automatic_payment_methods={"enabled": True, "allow_redirects": "always"}, + metadata={ + "donation_type": "subscription", + "user_id": str(request.user.id) if request.user.is_authenticated else None, + "message": message[:100] if message else "", + "anonymous": "true" if anonymous else "false", + "email": email, + }, + ) + + # Create donation record + donation = Donation.objects.create( + user=request.user if request.user.is_authenticated else None, + email=email, + amount=amount, + donation_type="subscription", + status="pending", + stripe_payment_intent_id=payment_intent.id, + stripe_customer_id=customer.id, + message=message, + anonymous=anonymous, + ) + + return JsonResponse({"clientSecret": payment_intent.client_secret, "donation_id": donation.id}) + + except Exception as e: + return JsonResponse({"error": str(e)}, status=400) + + +@csrf_exempt +def donation_webhook(request): + """Handle Stripe webhooks for donations.""" + payload = request.body + sig_header = request.META.get("HTTP_STRIPE_SIGNATURE") + webhook_secret = settings.STRIPE_WEBHOOK_SECRET + + try: + event = stripe.Webhook.construct_event(payload, sig_header, webhook_secret) + logger.info("Received Stripe webhook: %s", event.type) + except ValueError as e: + logger.exception("Invalid payload: %s", str(e)) + return HttpResponse(status=400) + except stripe.error.SignatureVerificationError as e: + logger.exception("Invalid signature: %s", str(e)) + return HttpResponse(status=400) + + try: + # Handle payment intent events + if event.type == "payment_intent.succeeded": + payment_intent = event.data.object + logger.info("Processing successful payment: %s", payment_intent.id) + handle_successful_donation_payment(payment_intent) + elif event.type == "payment_intent.payment_failed": + payment_intent = event.data.object + logger.info("Processing failed payment: %s", payment_intent.id) + handle_failed_donation_payment(payment_intent) + + # Handle subscription events + elif event.type == "customer.subscription.created": + subscription = event.data.object + logger.info("Processing new subscription: %s", subscription.id) + handle_subscription_created(subscription) + elif event.type == "customer.subscription.updated": + subscription = event.data.object + logger.info("Processing subscription update: %s", subscription.id) + handle_subscription_updated(subscription) + elif event.type == "customer.subscription.deleted": + subscription = event.data.object + logger.info("Processing subscription cancellation: %s", subscription.id) + handle_subscription_cancelled(subscription) + elif event.type == "invoice.payment_succeeded": + invoice = event.data.object + logger.info("Processing successful invoice payment: %s", invoice.id) + handle_invoice_paid(invoice) + elif event.type == "invoice.payment_failed": + invoice = event.data.object + logger.info("Processing failed invoice payment: %s", invoice.id) + handle_invoice_failed(invoice) + + return HttpResponse(status=200) + except Exception: + logger.exception("Error processing webhook %s", event.type) + return HttpResponse(status=500) + + +def handle_successful_donation_payment(payment_intent: stripe.PaymentIntent) -> None: + """Handle successful one-time donation payments.""" + try: + logger.info("Finding donation for payment intent: %s", payment_intent.id) + # Find the donation by payment intent ID + donation = Donation.objects.get(stripe_payment_intent_id=payment_intent.id) + + # Only update if not already completed + if donation.status != "completed": + logger.info("Marking donation %s as completed", donation.id) + donation.status = "completed" + donation.save() + + # Send thank you email + send_donation_thank_you_email(donation) + else: + logger.info("Donation %s already completed", donation.id) + + except Donation.DoesNotExist: + logger.warning( + ( + "No donation found for payment intent: %s. This may indicate a payment intended for another system " + "or a database inconsistency." + ), + payment_intent.id, + ) + except Exception: + logger.exception("Error handling successful payment %s", payment_intent.id) + raise # Re-raise to allow webhook to handle the error + + +def handle_failed_donation_payment(payment_intent): + """Handle failed one-time donation payments.""" + try: + # Find the donation by payment intent ID + donation = Donation.objects.get(stripe_payment_intent_id=payment_intent.id) + donation.status = "failed" + donation.save() + + except Donation.DoesNotExist: + # This might be a payment for something else + pass + + +def handle_subscription_created(subscription): + """Handle newly created subscriptions.""" + try: + # Find the donation by subscription ID + donation = Donation.objects.get(stripe_subscription_id=subscription.id) + donation.status = "completed" if subscription.status == "active" else "pending" + donation.save() + + except Donation.DoesNotExist: + # This might be a subscription for something else + pass + + +def handle_subscription_updated(subscription): + """Handle subscription updates.""" + try: + # Find the donation by subscription ID + donation = Donation.objects.get(stripe_subscription_id=subscription.id) + + # Update status based on subscription status + if subscription.status == "active": + donation.status = "completed" + elif subscription.status == "past_due": + donation.status = "pending" + elif subscription.status == "canceled": + donation.status = "cancelled" + + donation.save() + + except Donation.DoesNotExist: + # This might be a subscription for something else + pass + + +def handle_subscription_cancelled(subscription): + """Handle cancelled subscriptions.""" + try: + # Find the donation by subscription ID + donation = Donation.objects.get(stripe_subscription_id=subscription.id) + donation.status = "cancelled" + donation.save() + + except Donation.DoesNotExist: + # This might be a subscription for something else + pass + + +def handle_invoice_paid(invoice): + """Handle successful subscription invoice payments.""" + if invoice.subscription: + try: + # Find the donation by subscription ID + donation = Donation.objects.get(stripe_subscription_id=invoice.subscription) + + # Create a new donation record for this payment + Donation.objects.create( + user=donation.user, + email=donation.email, + amount=donation.amount, + donation_type="subscription", + status="completed", + stripe_subscription_id=donation.stripe_subscription_id, + stripe_customer_id=donation.stripe_customer_id, + message=donation.message, + anonymous=donation.anonymous, + ) + + # Send thank you email + send_donation_thank_you_email(donation) + + except Donation.DoesNotExist: + # This might be a subscription for something else + pass + + +def handle_invoice_failed(invoice): + """Handle failed subscription invoice payments.""" + if invoice.subscription: + try: + # Find the donation by subscription ID + donation = Donation.objects.get(stripe_subscription_id=invoice.subscription) + + # Create a new donation record for this failed payment + Donation.objects.create( + user=donation.user, + email=donation.email, + amount=donation.amount, + donation_type="subscription", + status="failed", + stripe_subscription_id=donation.stripe_subscription_id, + stripe_customer_id=donation.stripe_customer_id, + message=donation.message, + anonymous=donation.anonymous, + ) + + except Donation.DoesNotExist: + # This might be a subscription for something else + pass + + +def send_donation_thank_you_email(donation): + """Send a thank you email for donations.""" + subject = "Thank You for Your Donation!" + from_email = settings.DEFAULT_FROM_EMAIL + to_email = donation.email + + # Prepare context for email template + context = { + "donation": donation, + "site_name": settings.SITE_NAME, + } + + # Render email template + html_message = render_to_string("emails/donation_thank_you.html", context) + plain_message = strip_tags(html_message) + + # Send email + send_mail(subject, plain_message, from_email, [to_email], html_message=html_message) + + +def donation_success(request): + """Display a success page after a successful donation.""" + donation_id = request.GET.get("donation_id") + payment_intent = request.GET.get("payment_intent") + redirect_status = request.GET.get("redirect_status") + + # Ensure we have the required donation_id + if not donation_id: + messages.error(request, "No donation information found.") + return redirect("donate") + + try: + donation = Donation.objects.get(id=donation_id) + + # If the redirect indicates success and a payment intent exists, verify with Stripe. + if redirect_status == "succeeded" and payment_intent: + # Double check with Stripe that the payment was successful + try: + # Retrieve PaymentIntent from Stripe to confirm payment status. + stripe_payment = stripe.PaymentIntent.retrieve(payment_intent) + if stripe_payment.status == "succeeded": + donation.status = "completed" + donation.save() + # Send thank you email if not already sent + send_donation_thank_you_email(donation) + except stripe.error.StripeError: + logger.exception("Error verifying payment intent") + + # Retry logic for temporary Stripe failures using Django's cache. + cache_key = f"retry_verify_payment_{payment_intent}" + retry_count = cache.get(cache_key, 0) + + if retry_count < 3: + cache.set(cache_key, retry_count + 1, 3600) # Retry after 1 hour + # You could enqueue a Celery task or use another background task system + # to retry the verification process + logger.warning("Retry %d/3 scheduled for payment verification: %s", retry_count + 1, payment_intent) + else: + logger.error("Max retries reached for payment verification: %s", payment_intent) + + # Continue to show the success page even if verification fails; + # the webhook will eventually update the status + + # If the donation status is now completed, show the success page. + if donation.status == "completed": + context = { + "donation": donation, + } + return render(request, "donation_success.html", context) + + # If donation status is not completed, alert the user and redirect. + messages.error(request, "Donation has not been successfully processed.") + return redirect("donate") + + except Donation.DoesNotExist: + messages.error(request, "Invalid donation ID.") + return redirect("donate") + + except stripe.error.StripeError: + logger.exception("Stripe error in donation_success view") + messages.error(request, "A payment processing error occurred. Please check your payment details.") + return redirect("donate") + + except Exception: + logger.exception("Unexpected error in donation_success view") + messages.error(request, "An unexpected error occurred while processing your donation.") + return redirect("donate") + + +def donation_cancel(request): + """Handle donation cancellation.""" + return redirect("donate") + + +def educational_videos_list(request: HttpRequest) -> HttpResponse: + """View for listing educational videos with requests included at the bottom.""" + # Get category filter from query params + selected_category = request.GET.get("category") + + # Base querysets + videos = EducationalVideo.objects.select_related("uploader", "category").order_by("-uploaded_at") + video_requests = VideoRequest.objects.select_related("requester", "category", "fulfilled_by").order_by( + "-created_at" + ) + + # Apply category filter if provided + if selected_category: + videos = videos.filter(category__slug=selected_category) + video_requests = video_requests.filter(category__slug=selected_category) + selected_category_obj = get_object_or_404(Subject, slug=selected_category) + selected_category_display = selected_category_obj.name + else: + selected_category_display = None + + # Paginate videos (9 per page) + paginator = Paginator(videos, 9) + page_number = request.GET.get("page") + page_obj = paginator.get_page(page_number) + + # Limit video requests to 5 + video_requests = video_requests[:5] + video_requests_paginated = VideoRequest.objects.count() > 5 + + # Category counts for sidebar + category_counts = dict( + EducationalVideo.objects.values("category__slug") + .annotate(count=Count("id")) + .values_list("category__slug", "count"), + ) + + # Get all subjects + subjects = Subject.objects.all().order_by("order", "name") + + context = { + "videos": page_obj, + "is_paginated": page_obj.has_other_pages(), + "page_obj": page_obj, + "subjects": subjects, + "selected_category": selected_category, + "selected_category_display": selected_category_display, + "category_counts": category_counts, + "video_requests": video_requests, + "video_requests_paginated": video_requests_paginated, + } + + return render(request, "videos/list.html", context) + + +def fetch_video_oembed(video_url): + """ + Hits YouTube or Vimeo's oEmbed endpoint and returns a dict + containing 'title' and 'description' (if available). + """ + # YouTube IDs are always 11 chars + yt_match = re.search(r"(?:v=|youtu\.be/|embed/|shorts/)([\w-]{11})", video_url) + if yt_match: + video_id = yt_match.group(1) + endpoint = f"https://www.youtube.com/oembed?url=https://www.youtube.com/watch?v={video_id}&format=json" + else: + # Vimeo URLs look like vimeo.com/12345678… + vm_match = re.search(r"vimeo\.com/(?:video/)?(\d+)", video_url) + if vm_match: + endpoint = f"https://vimeo.com/api/oembed.json?url={video_url}" + else: + return {} + + try: + resp = requests.get(endpoint, timeout=3) + if resp.ok: + data = resp.json() + return { + "title": data.get("title", "").strip(), + "description": data.get("description", "").strip(), + } + except requests.RequestException: + pass + + return {} + + +def upload_educational_video(request): + """ + Handles GET → render form, POST → save video. + If user leaves title/description blank, we back‑fill from YouTube/Vimeo. + """ + if request.method == "POST": + form = EducationalVideoForm(request.POST) + if form.is_valid(): + video = form.save(commit=False) + if request.user.is_authenticated: + video.uploader = request.user + + # auto‑fetch metadata if missing + if not video.title.strip() or not video.description.strip(): + info = fetch_video_oembed(video.video_url) + if not video.title.strip() and info.get("title"): + video.title = info["title"] + if not video.description.strip() and info.get("description"): + video.description = info["description"] + + video.save() + + if request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"success": True, "message": "Video added successfully!"}) + return redirect("educational_videos_list") + + if request.headers.get("X-Requested-With") == "XMLHttpRequest": + error_text = " ".join(f"{fld}: {', '.join(errs)}." for fld, errs in form.errors.items()) + return JsonResponse({"success": False, "error": error_text}, status=400) + + else: + form = EducationalVideoForm() + + return render(request, "videos/upload.html", {"form": form}) + + +def certificate_detail(request, certificate_id): + certificate = get_object_or_404(Certificate, certificate_id=certificate_id) + if request.user != certificate.user and not request.user.is_staff: + return HttpResponseForbidden("You don't have permission to view this certificate") + context = { + "certificate": certificate, + } + return render(request, "courses/certificate_detail.html", context) + + +@login_required +def generate_certificate(request, enrollment_id): + # Retrieve the enrollment for the current user + enrollment = get_object_or_404(Enrollment, id=enrollment_id, student=request.user) + # Ensure the course is completed before generating a certificate + if enrollment.status != "completed": + messages.error(request, "You can only generate a certificate for a completed course.") + return redirect("student_dashboard") + + # Check if a certificate already exists for this course and user + certificate = Certificate.objects.filter(user=request.user, course=enrollment.course).first() + if certificate: + messages.info(request, "Certificate already generated.") + return redirect("certificate_detail", certificate_id=certificate.certificate_id) + + # Create a new certificate record manually + certificate = Certificate.objects.create(user=request.user, course=enrollment.course) + messages.success(request, "Certificate generated successfully!") + return redirect("certificate_detail", certificate_id=certificate.certificate_id) + + +@login_required +def tracker_list(request): + trackers = ProgressTracker.objects.filter(user=request.user).order_by("-updated_at") + return render(request, "trackers/list.html", {"trackers": trackers}) + + +@login_required +def create_tracker(request): + if request.method == "POST": + form = ProgressTrackerForm(request.POST) + if form.is_valid(): + tracker = form.save(commit=False) + tracker.user = request.user + tracker.save() + return redirect("tracker_detail", tracker_id=tracker.id) + else: + form = ProgressTrackerForm() + return render(request, "trackers/form.html", {"form": form, "title": "Create Progress Tracker"}) + + +@login_required +def update_tracker(request, tracker_id): + tracker = get_object_or_404(ProgressTracker, id=tracker_id, user=request.user) + + if request.method == "POST": + form = ProgressTrackerForm(request.POST, instance=tracker) + if form.is_valid(): + form.save() + return redirect("tracker_detail", tracker_id=tracker.id) + else: + form = ProgressTrackerForm(instance=tracker) + return render(request, "trackers/form.html", {"form": form, "tracker": tracker, "title": "Update Progress Tracker"}) + + +@login_required +def tracker_detail(request, tracker_id): + tracker = get_object_or_404(ProgressTracker, id=tracker_id, user=request.user) + embed_url = request.build_absolute_uri(f"/trackers/embed/{tracker.embed_code}/") + return render(request, "trackers/detail.html", {"tracker": tracker, "embed_url": embed_url}) + + +@login_required +def update_progress(request, tracker_id): + if request.method == "POST" and request.headers.get("X-Requested-With") == "XMLHttpRequest": + tracker = get_object_or_404(ProgressTracker, id=tracker_id, user=request.user) + + try: + new_value = int(request.POST.get("current_value", tracker.current_value)) + tracker.current_value = new_value + tracker.save() + + return JsonResponse( + {"success": True, "percentage": tracker.percentage, "current_value": tracker.current_value} + ) + except ValueError: + return JsonResponse({"success": False, "error": "Invalid value"}, status=400) + return JsonResponse({"success": False, "error": "Invalid request"}, status=400) + + +@xframe_options_exempt +def embed_tracker(request, embed_code): + tracker = get_object_or_404(ProgressTracker, embed_code=embed_code, public=True) + return render(request, "trackers/embed.html", {"tracker": tracker}) + + +@login_required +def streak_detail(request): + """Display the user's learning streak.""" + if not request.user.is_authenticated: + return redirect("account_login") + streak, created = LearningStreak.objects.get_or_create(user=request.user) + return render(request, "streak_detail.html", {"streak": streak}) + + +@login_required +def waiting_room_list(request): + """View for displaying waiting rooms categorized by status.""" + # Get waiting rooms by status + open_rooms = WaitingRoom.objects.filter(status="open") + fulfilled_rooms = WaitingRoom.objects.filter(status="fulfilled") + closed_rooms = WaitingRoom.objects.filter(status="closed") + + # Get waiting rooms created by the user + user_created_rooms = WaitingRoom.objects.filter(creator=request.user) + + # Get waiting rooms joined by the user + user_joined_rooms = request.user.joined_waiting_rooms.all() + + # Process topics for all waiting rooms + all_rooms = ( + list(open_rooms) + + list(fulfilled_rooms) + + list(closed_rooms) + + list(user_created_rooms) + + list(user_joined_rooms) + ) + room_topics = {} + for room in all_rooms: + room_topics[room.id] = [topic.strip() for topic in room.topics.split(",") if topic.strip()] + + context = { + "open_rooms": open_rooms, + "fulfilled_rooms": fulfilled_rooms, + "closed_rooms": closed_rooms, + "user_created_rooms": user_created_rooms, + "user_joined_rooms": user_joined_rooms, + "room_topics": room_topics, + } + return render(request, "waiting_room/list.html", context) + + +def find_matching_courses(waiting_room): + """Find courses that match the waiting room's subject and topics.""" + # Get courses with matching subject name (case-insensitive) + matching_courses = Course.objects.filter(subject__iexact=waiting_room.subject, status="published") + + # Filter courses that have all required topics + required_topics = {t.strip().lower() for t in waiting_room.topics.split(",") if t.strip()} + + # Further filter courses by checking if their topics contain all required topics + final_matches = [] + for course in matching_courses: + course_topics = {t.strip().lower() for t in course.topics.split(",") if t.strip()} + if course_topics.issuperset(required_topics): + final_matches.append(course) + + return final_matches + + +def waiting_room_detail(request, waiting_room_id): + """View for displaying details of a waiting room.""" + waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id) + + # Check if the user is a participant + is_participant = request.user.is_authenticated and request.user in waiting_room.participants.all() + + # Check if the user is the creator + is_creator = request.user.is_authenticated and request.user == waiting_room.creator + + # Check if the user is a teacher + is_teacher = request.user.is_authenticated and hasattr(request.user, "profile") and request.user.profile.is_teacher + + context = { + "waiting_room": waiting_room, + "is_participant": is_participant, + "is_creator": is_creator, + "is_teacher": is_teacher, + "participant_count": waiting_room.participants.count() + 1, # Add 1 to include the creator + "topic_list": [topic.strip() for topic in waiting_room.topics.split(",") if topic.strip()], + } + return render(request, "waiting_room/detail.html", context) + + +@login_required +def join_waiting_room(request, waiting_room_id): + """View for joining a waiting room.""" + waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id) + + # Check if the waiting room is open + if waiting_room.status != "open": + messages.error(request, "This waiting room is no longer open for joining.") + return redirect("waiting_room_list") + + # Add the user as a participant if not already + if request.user not in waiting_room.participants.all(): + waiting_room.participants.add(request.user) + messages.success(request, f"You have joined the waiting room: {waiting_room.title}") + else: + messages.info(request, "You are already a participant in this waiting room.") + + return redirect("waiting_room_detail", waiting_room_id=waiting_room.id) + + +@login_required +def leave_waiting_room(request, waiting_room_id): + """View for leaving a waiting room.""" + waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id) + + # Remove the user from participants + if request.user in waiting_room.participants.all(): + waiting_room.participants.remove(request.user) + messages.success(request, f"You have left the waiting room: {waiting_room.title}") + else: + messages.info(request, "You are not a participant in this waiting room.") + + return redirect("waiting_room_list") + + +def is_superuser(user): + return user.is_superuser + + +@user_passes_test(is_superuser) +def sync_github_milestones(request): + """Sync GitHub milestones with forum topics.""" + github_repo = "alphaonelabs/alphaonelabs-education-website" + milestones_url = f"https://api.github.com/repos/{github_repo}/milestones" + + try: + # Get GitHub milestones + response = requests.get(milestones_url) + response.raise_for_status() + milestones = response.json() + + # Get or create a forum category for milestones + category, created = ForumCategory.objects.get_or_create( + name="GitHub Milestones", + defaults={ + "slug": "github-milestones", + "description": "Discussions about GitHub milestones and project roadmap", + "icon": "fa-github", + }, + ) + + # Count for tracking + created_count = 0 + updated_count = 0 + + for milestone in milestones: + milestone_title = milestone["title"] + milestone_description = milestone["description"] or "No description provided." + milestone_url = milestone["html_url"] + milestone_state = milestone["state"] + open_issues = milestone["open_issues"] + closed_issues = milestone["closed_issues"] + due_date = milestone.get("due_on", "No due date") + + # Format content with progress information + progress = 0 + if open_issues + closed_issues > 0: + progress = (closed_issues / (open_issues + closed_issues)) * 100 + + content = f""" +## Milestone: {milestone_title} + +{milestone_description} + +**State:** {milestone_state} +**Progress:** {progress:.1f}% ({closed_issues} closed / {open_issues} open issues) +**Due Date:** {due_date} + +[View on GitHub]({milestone_url}) + """ + + # Try to find an existing topic for this milestone + topic = ForumTopic.objects.filter( + category=category, title__startswith=f"Milestone: {milestone_title}" + ).first() + + if topic: + # Update existing topic + topic.content = content + topic.is_pinned = milestone_state == "open" # Pin open milestones + topic.save() + updated_count += 1 + else: + # Create new topic + # Use the first superuser as the author + author = User.objects.filter(is_superuser=True).first() + if author: + ForumTopic.objects.create( + category=category, + title=f"Milestone: {milestone_title}", + content=content, + author=author, + is_pinned=(milestone_state == "open"), + ) + created_count += 1 + + if created_count or updated_count: + messages.success( + request, f"Successfully synced GitHub milestones: {created_count} created, {updated_count} updated." + ) + else: + messages.info(request, "No GitHub milestones to sync.") + + except requests.exceptions.RequestException as e: + messages.error(request, f"Error fetching GitHub milestones: {str(e)}") + except Exception as e: + messages.error(request, f"Error syncing milestones: {str(e)}") + + return redirect("forum_categories") + + +@login_required +def toggle_course_status(request, slug): + """Toggle a course between draft and published status""" + course = get_object_or_404(Course, slug=slug) + + # Check if user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can modify course status!") + return redirect("course_detail", slug=slug) + + # Toggle the status between draft and published + if course.status == "draft": + course.status = "published" + messages.success(request, "Course has been published successfully!") + elif course.status == "published": + course.status = "draft" + messages.success(request, "Course has been unpublished and is now in draft mode.") + # Note: We don't toggle from/to 'archived' status as that's a separate action + + course.save() + return redirect("course_detail", slug=slug) + + +def public_profile(request, username): + user = get_object_or_404(User, username=username) + + try: + profile = user.profile + except Profile.DoesNotExist: + # Instead of raising Http404, we call custom_404. + return custom_404(request, "Profile not found.") + + if not profile.is_profile_public: + return custom_404(request, "Profile not found.") + + context = {"profile": profile} + + if profile.is_teacher: + courses = Course.objects.filter(teacher=user) + total_students = sum(course.enrollments.filter(status="approved").count() for course in courses) + context.update( + { + "teacher_stats": { + "courses": courses, + "total_courses": courses.count(), + "total_students": total_students, + } + } + ) + else: + enrollments = Enrollment.objects.filter(student=user) + completed_enrollments = enrollments.filter(status="completed") + total_courses = enrollments.count() + total_completed = completed_enrollments.count() + total_progress = 0 + progress_count = 0 + for enrollment in enrollments: + progress, _ = CourseProgress.objects.get_or_create(enrollment=enrollment) + total_progress += progress.completion_percentage + progress_count += 1 + avg_progress = round(total_progress / progress_count) if progress_count > 0 else 0 + context.update( + { + "total_courses": total_courses, + "total_completed": total_completed, + "avg_progress": avg_progress, + "completed_courses": completed_enrollments, + } + ) + + return render(request, "public_profile_detail.html", context) + + +class GradeableLinkListView(ListView): + """View to display all submitted links that can be graded.""" + + model = GradeableLink + template_name = "grade_links/link_list.html" + context_object_name = "links" + paginate_by = 10 + + +class GradeableLinkDetailView(DetailView): + """View to display details about a specific link and its grades.""" + + model = GradeableLink + template_name = "grade_links/link_detail.html" + context_object_name = "link" + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + + # Check if user is authenticated + if self.request.user.is_authenticated: + # Check if the user has already graded this link + try: + user_grade = LinkGrade.objects.get(link=self.object, user=self.request.user) + context["user_grade"] = user_grade + context["grade_form"] = LinkGradeForm(instance=user_grade) + except LinkGrade.DoesNotExist: + context["grade_form"] = LinkGradeForm() + + # Get all grades for this link + context["grades"] = self.object.grades.all() + + return context + + +class GradeableLinkCreateView(LoginRequiredMixin, CreateView): + """View to submit a new link for grading.""" + + model = GradeableLink + form_class = GradeableLinkForm + template_name = "grade_links/submit_link.html" + success_url = reverse_lazy("gradeable_link_list") + + def form_valid(self, form): + form.instance.user = self.request.user + messages.success(self.request, "Your link has been submitted for grading!") + return super().form_valid(form) + + +@login_required +def grade_link(request, pk): + """View to grade a link.""" + link = get_object_or_404(GradeableLink, pk=pk) + + # Prevent users from grading their own links + if link.user == request.user: + messages.error(request, "You cannot grade your own submissions!") + return redirect("gradeable_link_detail", pk=link.pk) + + # Check if the user has already graded this link + try: + user_grade = LinkGrade.objects.get(link=link, user=request.user) + except LinkGrade.DoesNotExist: + user_grade = None + + if request.method == "POST": + form = LinkGradeForm(request.POST, instance=user_grade) + if form.is_valid(): + grade = form.save(commit=False) + grade.link = link + grade.user = request.user + grade.save() + messages.success(request, "Your grade has been submitted!") + return redirect("gradeable_link_detail", pk=link.pk) + else: + form = LinkGradeForm(instance=user_grade) + + return render( + request, + "grade_links/grade_link.html", + { + "form": form, + "link": link, + }, + ) + + +def duplicate_session(request, session_id): + """Duplicate a session to next week.""" + # Get the original session + session = get_object_or_404(Session, id=session_id) + course = session.course + + # Check if user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can duplicate sessions!") + return redirect("course_detail", slug=course.slug) + + # Create a new session with the same properties but dates shifted forward by a week + new_session = Session( + course=course, + title=session.title, + description=session.description, + is_virtual=session.is_virtual, + meeting_link=session.meeting_link, + meeting_id="", # Clear meeting ID as it will be a new meeting + location=session.location, + price=session.price, + enable_rollover=session.enable_rollover, + rollover_pattern=session.rollover_pattern, + ) + + # Set dates one week later + time_shift = timezone.timedelta(days=7) + new_session.start_time = session.start_time + time_shift + new_session.end_time = session.end_time + time_shift + + # Save the new session + new_session.save() + msg = f"Session '{session.title}' duplicated for {new_session.start_time.strftime('%b %d, %Y')}" + messages.success(request, msg) + + return redirect("course_detail", slug=course.slug) + + +def run_create_test_data(request): + """Run the create_test_data management command and redirect to homepage.""" + from django.conf import settings + + if not settings.DEBUG: + messages.error(request, "This action is only available in debug mode.") + return redirect("index") + + try: + call_command("create_test_data") + messages.success(request, "Test data has been created successfully!") + except Exception as e: + messages.error(request, f"Error creating test data: {str(e)}") + + return redirect("index") + + +@login_required +@require_POST +def teacher_update_student_attendance(request, classroom_id): + """Handle student attendance marking.""" + try: + classroom = VirtualClassroom.objects.get(id=classroom_id) + student = request.user # Student marks their own attendance + + # Check if student is enrolled + is_enrolled = False + if classroom.course: + is_enrolled = classroom.course.enrollments.filter(student=student, status="approved").exists() + else: + # For classrooms without a course, check VirtualClassroomParticipant table + is_enrolled = VirtualClassroomParticipant.objects.filter(classroom=classroom, user=student).exists() + + if not is_enrolled: + return JsonResponse({"success": False, "message": "You are not enrolled in this class"}, status=403) + + # Get or create today's session + today = timezone.now().date() + today_start = timezone.make_aware(datetime.combine(today, datetime.min.time())) + today_end = timezone.make_aware(datetime.combine(today, datetime.max.time())) + + if classroom.course: + session = Session.objects.filter( + course=classroom.course, + start_time__range=(today_start, today_end), + ).first() + if not session: + session = Session.objects.create( + course=classroom.course, + title=f"Class on {today.strftime('%Y-%m-%d')}", + start_time=today_start, + end_time=today_end, + ) + else: + session = Session.objects.filter( + title=f"Class on {today.strftime('%Y-%m-%d')}", + start_time__range=(today_start, today_end), + course__isnull=True, + ).first() + if not session: + session = Session.objects.create( + title=f"Class on {today.strftime('%Y-%m-%d')}", + start_time=today_start, + end_time=today_end, + course=None, + ) + + # Mark attendance + attendance, created = SessionAttendance.objects.get_or_create( + session=session, student=student, defaults={"status": "present"} + ) + + if not created: + # If attendance record already exists, update its status to present + attendance.status = "present" + attendance.save() + + if request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"success": True, "message": "Attendance updated successfully", "created": created}) + else: + messages.success(request, "Your attendance has been marked.") + return redirect("classroom_attendance", classroom_id=classroom_id) + + except VirtualClassroom.DoesNotExist: + if request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"success": False, "message": "Classroom not found"}, status=404) + else: + messages.error(request, "Classroom not found.") + return redirect("virtual_classroom_list") + except Exception as e: + logger.exception("Error updating student attendance: %s", str(e)) + if request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"success": False, "message": "An internal error occurred"}, status=500) + else: + messages.error(request, "An internal error occurred.") + return redirect("classroom_attendance", classroom_id=classroom_id) + + +@login_required +@teacher_required +def student_management(request, course_slug, student_id): + """ + View for managing a specific student in a course. + This replaces the modal functionality with a dedicated page. + """ + course = get_object_or_404(Course, slug=course_slug) + student = get_object_or_404(User, id=student_id) + + # Check if user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can manage students!") + return redirect("course_detail", slug=course.slug) + + # Check if student is enrolled in this course + enrollment = get_object_or_404(Enrollment, course=course, student=student) + + # Get sessions for this course + sessions = course.sessions.all().order_by("start_time") + + # Get attendance records + attendance_records = SessionAttendance.objects.filter(student=student, session__course=course).select_related( + "session" + ) + + # Format attendance data for easier access in template + attendance_data = {} + for record in attendance_records: + attendance_data[record.session.id] = {"status": record.status, "notes": record.notes} + + # Get student progress data + progress = CourseProgress.objects.filter(enrollment=enrollment).first() + completed_sessions = [] + if progress: + completed_sessions = progress.completed_sessions.all() + + # Calculate attendance rate + total_sessions = sessions.count() + attended_sessions = SessionAttendance.objects.filter( + student=student, session__course=course, status__in=["present", "late"] + ).count() + + attendance_rate = 0 + if total_sessions > 0: + attendance_rate = int((attended_sessions / total_sessions) * 100) + + # Get badges earned by this student + user_badges = student.badges.all() + + context = { + "course": course, + "student": student, + "enrollment": enrollment, + "sessions": sessions, + "attendance_data": attendance_data, + "attendance_rate": attendance_rate, + "progress": progress, + "completed_sessions": completed_sessions, + "badges": user_badges, + } + + return render(request, "courses/student_management.html", context) + + +@login_required +@teacher_required +def update_student_progress(request, enrollment_id): + """ + View for updating a student's progress in a course. + """ + enrollment = get_object_or_404(Enrollment, id=enrollment_id) + course = enrollment.course + + # Check if user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can update student progress!") + return redirect("course_detail", slug=course.slug) + + if request.method == "POST": + grade = request.POST.get("grade") + status = request.POST.get("status") + comments = request.POST.get("comments", "") + + # Update enrollment + enrollment.grade = grade + enrollment.status = status + enrollment.notes = comments + enrollment.last_grade_update = timezone.now() + enrollment.save() + + messages.success(request, f"Progress for {enrollment.student.username} updated successfully!") + return redirect("student_management", course_slug=course.slug, student_id=enrollment.student.id) + + # If not POST, redirect back to student management + return redirect("student_management", course_slug=course.slug, student_id=enrollment.student.id) + + +@login_required +@teacher_required +def update_teacher_notes(request, enrollment_id): + """ + View for updating teacher's private notes for a student. + """ + enrollment = get_object_or_404(Enrollment, id=enrollment_id) + course = enrollment.course + + # Check if user is the course teacher + if request.user != course.teacher: + messages.error(request, "Only the course teacher can update notes!") + return redirect("course_detail", slug=course.slug) + + if request.method == "POST": + notes = request.POST.get("teacher_notes", "") + + # If notes have changed, create a new note history entry + if enrollment.teacher_notes != notes and notes.strip(): + NoteHistory.objects.create(enrollment=enrollment, content=notes, created_by=request.user) + + # Update enrollment + enrollment.teacher_notes = notes + enrollment.save() + + messages.success(request, f"Notes for {enrollment.student.username} updated successfully!") + + return redirect("student_management", course_slug=course.slug, student_id=enrollment.student.id) + + +@login_required +@teacher_required +@require_POST +def update_session_attendance(request): + """Update student attendance for a specific session.""" + try: + # Get form data + session_id = request.POST.get("session_id") + student_id = request.POST.get("student_id") + status = request.POST.get("status") + notes = request.POST.get("notes", "") + + if not session_id or not student_id or not status: + return JsonResponse({"success": False, "message": "Missing required data"}, status=400) + + # Get objects + session = get_object_or_404(Session, id=session_id) + student = get_object_or_404(User, id=student_id) + + # Check if the current user is the teacher for this session's course + if session.course and session.course.teacher != request.user: + return JsonResponse( + {"success": False, "message": "Only the course teacher can update attendance"}, status=403 + ) + + # Update or create attendance record + attendance, created = SessionAttendance.objects.get_or_create( + session=session, student=student, defaults={"status": status, "notes": notes} + ) + + if not created: + attendance.status = status + attendance.notes = notes + attendance.save() + + return JsonResponse({"success": True, "message": "Attendance updated successfully", "created": created}) + + except Exception as e: + # Log the detailed exception for debugging + logger.exception("Error in update_session_attendance: %s", str(e)) + return JsonResponse({"success": False, "message": "An internal error occurred"}, status=500) + + +@login_required +@teacher_required +@require_POST +def award_badge(request): + """ + AJAX view for awarding badges to students. + """ + if not request.headers.get("X-Requested-With") == "XMLHttpRequest": + return JsonResponse({"success": False, "message": "Invalid request"}, status=400) + + student_id = request.POST.get("student_id") + badge_type = request.POST.get("badge_type") + course_slug = request.POST.get("course_slug") + + if not all([student_id, badge_type, course_slug]): + return JsonResponse({"success": False, "message": "Missing required parameters"}, status=400) + + try: + student = User.objects.get(id=student_id) + course = Course.objects.get(slug=course_slug) + + # Check if user is the course teacher + if request.user != course.teacher: + return JsonResponse( + {"success": False, "message": "Unauthorized: Only the course teacher can award badges"}, status=403 + ) + + # Handle different badge types + badge = None + if badge_type == "perfect_attendance": + badge, created = Badge.objects.get_or_create( + name="Perfect Attendance", + defaults={"description": "Awarded for attending all sessions in a course", "points": 50}, + ) + elif badge_type == "participation": + badge, created = Badge.objects.get_or_create( + name="Outstanding Participation", + defaults={"description": "Awarded for exceptional participation in course discussions", "points": 75}, + ) + elif badge_type == "completion": + badge, created = Badge.objects.get_or_create( + name="Course Completion", + defaults={"description": "Awarded for successfully completing the course", "points": 100}, + ) + else: + return JsonResponse({"success": False, "message": "Invalid badge type"}, status=400) + + # Award the badge to the student + user_badge, created = UserBadge.objects.get_or_create( + user=student, badge=badge, defaults={"awarded_by": request.user, "course": course} + ) + + if not created: + return JsonResponse({"success": False, "message": "Student already has this badge"}, status=400) + + return JsonResponse( + {"success": True, "message": f"Badge '{badge.name}' awarded successfully to {student.username}"} + ) + + except User.DoesNotExist: + return JsonResponse({"success": False, "message": "Student not found"}, status=404) + except Course.DoesNotExist: + return JsonResponse({"success": False, "message": "Course not found"}, status=404) + except Exception as e: + logger.exception("Error awarding badge: %s", str(e)) + return JsonResponse({"success": False, "message": "An internal error occurred"}, status=500) + + +def notification_preferences(request): + """ + Display and update the notification preferences for the logged-in user. + """ + # Get (or create) the user's notification preferences. + preference, created = NotificationPreference.objects.get_or_create(user=request.user) + + if request.method == "POST": + form = NotificationPreferencesForm(request.POST, instance=preference) + if form.is_valid(): + form.save() + messages.success(request, "Your notification preferences have been updated.") + # Redirect to the profile page after saving + return redirect("profile") + else: + messages.error(request, "There was an error updating your preferences.") + else: + form = NotificationPreferencesForm(instance=preference) + + return render(request, "account/notification_preferences.html", {"form": form}) + + +@login_required +def invite_to_study_group(request, group_id): + """Invite a user to a study group.""" + group = get_object_or_404(StudyGroup, id=group_id) + + # Only allow invitations from current group members. + if request.user not in group.members.all(): + messages.error(request, "You must be a member of the group to invite others.") + return redirect("study_group_detail", group_id=group.id) + + if request.method == "POST": + email_or_username = request.POST.get("email_or_username") + # Search by email or username. + recipient = User.objects.filter(Q(email=email_or_username) | Q(username=email_or_username)).first() + if not recipient: + messages.error(request, f"No user found with email or username: {email_or_username}") + return redirect("study_group_detail", group_id=group.id) + + # Prevent duplicate invitations or inviting existing members. + if recipient in group.members.all(): + messages.warning(request, f"{recipient.username} is already a member of this group.") + return redirect("study_group_detail", group_id=group.id) + + if StudyGroupInvite.objects.filter(group=group, recipient=recipient, status="pending").exists(): + messages.warning(request, f"An invitation has already been sent to {recipient.username}.") + return redirect("study_group_detail", group_id=group.id) + + if group.is_full(): + messages.error(request, "The study group is full. No new members can be added.") + return redirect("study_group_detail", group_id=group.id) + + # Create a notification for the recipient. + notification_url = request.build_absolute_uri(reverse("user_invitations")) + notification_text = ( + f"{request.user.username} has invited you to join the study group: {group.name}. " + f"View invitations here: {notification_url}" + ) + Notification.objects.create( + user=recipient, title="Study Group Invitation", message=notification_text, notification_type="info" + ) + + messages.success(request, f"Invitation sent to {recipient.username}.") + return redirect("study_group_detail", group_id=group.id) + + return redirect("study_group_detail", group_id=group.id) + + +@login_required +def user_invitations(request): + """Display pending study group invitations for the user.""" + invitations = StudyGroupInvite.objects.filter(recipient=request.user, status="pending").select_related( + "group", "sender" + ) + return render(request, "web/study/invitations.html", {"invitations": invitations}) + + +@login_required +def respond_to_invitation(request, invite_id): + """Accept or decline a study group invitation.""" + invite = get_object_or_404(StudyGroupInvite, id=invite_id, recipient=request.user) + if request.method == "POST": + response = request.POST.get("response") + if response == "accept": + if invite.group.is_full(): + messages.error(request, "The study group is full. Cannot join.") + return redirect("user_invitations") + invite.accept() + study_group_url = request.build_absolute_uri(reverse("study_group_detail", args=[invite.group.id])) + notification_text = f"{request.user.username} has accepted your invitation to join {invite.group.name}.\ + View group details here: {study_group_url}" + Notification.objects.create( + user=invite.sender, title="Invitation Accepted", message=notification_text, notification_type="success" + ) + messages.success(request, f"You have joined {invite.group.name}.") + return redirect("user_invitations") + elif response == "decline": + invite.decline() + study_group_url = request.build_absolute_uri(reverse("study_group_detail", args=[invite.group.id])) + notification_text = f"{request.user.username} has declined your invitation to join {invite.group.name}.\ + View group details here: {study_group_url}" + Notification.objects.create( + user=invite.sender, title="Invitation Declined", message=notification_text, notification_type="warning" + ) + messages.info(request, f"You have declined the invitation to {invite.group.name}.") + return redirect("user_invitations") + + return redirect("user_invitations") + + +@login_required +def create_study_group(request): + if request.method == "POST": + form = StudyGroupForm(request.POST) + if form.is_valid(): + study_group = form.save(commit=False) + study_group.creator = request.user + study_group.save() + # Automatically add the creator as a member + study_group.members.add(request.user) + messages.success(request, "Study group created successfully!") + return redirect("study_group_detail", group_id=study_group.id) + else: + form = StudyGroupForm() + return render(request, "web/study/create_group.html", {"form": form}) + + +def features_page(request): + """View to display the features page.""" + return render(request, "features.html") + + +@require_POST +@csrf_protect +def feature_vote(request): + """API endpoint to handle feature voting.""" + feature_id = request.POST.get("feature_id") + vote_type = request.POST.get("vote") + + if not feature_id or vote_type not in ["up", "down"]: + return JsonResponse({"status": "error", "message": "Invalid parameters"}, status=400) + + # Store IP for anonymous users + ip_address = None + if not request.user.is_authenticated: + ip_address = ( + request.META.get("REMOTE_ADDR") or request.META.get("HTTP_X_FORWARDED_FOR", "").split(",")[0].strip() + ) + if not ip_address: + return JsonResponse({"status": "error", "message": "Could not identify user"}, status=400) + + # Process the vote + try: + # Use transaction to prevent race conditions during vote operations + with transaction.atomic(): + # Check for existing vote + existing_vote = None + if request.user.is_authenticated: + existing_vote = FeatureVote.objects.filter(feature_id=feature_id, user=request.user).first() + elif ip_address: + existing_vote = FeatureVote.objects.filter( + feature_id=feature_id, ip_address=ip_address, user__isnull=True + ).first() + + # Handle the vote logic + status_message = "Vote recorded" + if existing_vote: + if existing_vote.vote == vote_type: + status_message = "You've already cast this vote" + else: + # Change vote type if user changed their mind + existing_vote.vote = vote_type + existing_vote.save() + status_message = "Vote changed" + else: + # Create new vote + new_vote = FeatureVote(feature_id=feature_id, vote=vote_type) + + if request.user.is_authenticated: + new_vote.user = request.user + else: + new_vote.ip_address = ip_address + + new_vote.save() + + # Get updated counts within the transaction to ensure consistency + up_count = FeatureVote.objects.filter(feature_id=feature_id, vote="up").count() + down_count = FeatureVote.objects.filter(feature_id=feature_id, vote="down").count() + + # Calculate percentage for visualization + total_votes = up_count + down_count + up_percentage = round((up_count / total_votes) * 100) if total_votes > 0 else 0 + down_percentage = round((down_count / total_votes) * 100) if total_votes > 0 else 0 + + return JsonResponse( + { + "status": "success", + "message": status_message, + "up_count": up_count, + "down_count": down_count, + "total_votes": total_votes, + "up_percentage": up_percentage, + "down_percentage": down_percentage, + } + ) + + except Exception as e: + logger.exception("Error processing vote: %s", str(e)) + return JsonResponse({"status": "error", "message": "An internal error occurred"}, status=500) + + +@require_GET +def feature_vote_count(request): + """Get vote counts for one or more features.""" + feature_ids = request.GET.get("feature_ids", "").split(",") + if not feature_ids or not feature_ids[0]: + return JsonResponse({"error": "No feature IDs provided"}, status=400) + + result = {} + # Get all up and down votes in a single query each for better performance + up_votes = ( + FeatureVote.objects.filter(feature_id__in=feature_ids, vote="up") + .values("feature_id") + .annotate(count=Count("id")) + ) + down_votes = ( + FeatureVote.objects.filter(feature_id__in=feature_ids, vote="down") + .values("feature_id") + .annotate(count=Count("id")) + ) + + # Create lookup dictionaries for efficient access + up_votes_dict = {str(vote["feature_id"]): vote["count"] for vote in up_votes} + down_votes_dict = {str(vote["feature_id"]): vote["count"] for vote in down_votes} + + # Check user's votes if authenticated + user_votes = {} + if request.user.is_authenticated: + user_vote_objects = FeatureVote.objects.filter(feature_id__in=feature_ids, user=request.user) + for vote in user_vote_objects: + user_votes[str(vote.feature_id)] = vote.vote + elif request.META.get("REMOTE_ADDR"): + # Get IP address for anonymous users + ip_address = ( + request.META.get("REMOTE_ADDR") or request.META.get("HTTP_X_FORWARDED_FOR", "").split(",")[0].strip() + ) + if ip_address: + anon_vote_objects = FeatureVote.objects.filter( + feature_id__in=feature_ids, ip_address=ip_address, user__isnull=True + ) + for vote in anon_vote_objects: + user_votes[str(vote.feature_id)] = vote.vote + + for feature_id in feature_ids: + up_count = up_votes_dict.get(feature_id, 0) + down_count = down_votes_dict.get(feature_id, 0) + total_votes = up_count + down_count + + # Calculate percentages + up_percentage = (up_count / total_votes * 100) if total_votes > 0 else 0 + down_percentage = (down_count / total_votes * 100) if total_votes > 0 else 0 + + result[feature_id] = { + "up_count": up_count, + "down_count": down_count, + "total_votes": total_votes, + "up_percentage": round(up_percentage, 1), + "down_percentage": round(down_percentage, 1), + "user_vote": user_votes.get(feature_id, None), + } + + return JsonResponse(result) + + +@login_required +def progress_visualization(request): + """Generate and render progress visualization statistics for a student's enrolled courses.""" + user = request.user + + # Create a unique cache key based on user ID + cache_key = f"user_progress_{user.id}" + context = cache.get(cache_key) + + if not context: + # Cache miss - calculate all data + enrollments = Enrollment.objects.filter(student=user) + course_stats = calculate_course_stats(enrollments) + attendance_stats = calculate_attendance_stats(user, enrollments) + learning_activity = calculate_learning_activity(user, enrollments) + completion_pace = calculate_completion_pace(enrollments) + chart_data = prepare_chart_data(enrollments) + + # Combine all stats into a single context dictionary + context = {**course_stats, **attendance_stats, **learning_activity, **completion_pace, **chart_data} + # Cache the results (no expiration, we'll invalidate manually via signals) + cache.set(cache_key, context, timeout=None) # None means no expiration + + return render(request, "courses/progress_visualization.html", context) + + +def calculate_course_stats(enrollments): + """Calculate statistics on the user's course progress.""" + total_courses = enrollments.count() + courses_completed = enrollments.filter(status="completed").count() + topics_mastered = sum(e.progress.completed_sessions.count() for e in enrollments if hasattr(e, "progress")) + + return { + "total_courses": total_courses, + "courses_completed": courses_completed, + "courses_completed_percentage": round((courses_completed / total_courses) * 100) if total_courses else 0, + "topics_mastered": topics_mastered, + } + + +def calculate_attendance_stats(user, enrollments): + """Calculate the user's attendance statistics.""" + all_attendances = SessionAttendance.objects.filter( + student=user, session__course__in=[e.course for e in enrollments] + ) + total_attendance_count = all_attendances.count() + present_attendance_count = all_attendances.filter(status__in=["present", "late"]).count() + + return { + "average_attendance": ( + round((present_attendance_count / total_attendance_count) * 100) if total_attendance_count else 0 + ) + } + + +def calculate_learning_activity(user, enrollments): + """Calculate learning activity metrics like active days, streaks, and learning hours.""" + all_completed_sessions = [ + s for s in get_all_completed_sessions(enrollments) if s.start_time and s.end_time and s.end_time > s.start_time + ] + now = timezone.now() + + # Find the most active day of the week + most_active_day = Counter(session.start_time.strftime("%A") for session in all_completed_sessions).most_common(1) + # Find the most recent session date + last_session_date = ( + max(all_completed_sessions, key=lambda s: s.start_time).start_time.strftime("%b %d, %Y") + if all_completed_sessions + else "N/A" + ) + + streak, _ = LearningStreak.objects.get_or_create(user=user) + current_streak = streak.current_streak + + total_learning_hours = round( + sum((s.end_time - s.start_time).total_seconds() / 3600 for s in all_completed_sessions), 1 + ) + + # Calculate the number of weeks since the first session, minimum 1 week + weeks_since_first_session = ( + max(1, (now - min(all_completed_sessions, key=lambda s: s.start_time).start_time).days / 7) + if all_completed_sessions + else 1 + ) + avg_sessions_per_week = round(len(all_completed_sessions) / weeks_since_first_session, 1) + + return { + # Extract the day name from the most common day tuple, or default to "N/A" + "most_active_day": most_active_day[0][0] if most_active_day else "N/A", + "last_session_date": last_session_date, + "current_streak": current_streak, + "total_learning_hours": total_learning_hours, + "avg_sessions_per_week": avg_sessions_per_week, + } + + +def calculate_completion_pace(enrollments): + """Calculate the average completion pace for completed courses.""" + completed_enrollments = enrollments.filter(status="completed") + if not completed_enrollments.exists(): + return {"completion_pace": "N/A"} + + total_days = sum( + (e.completion_date - e.enrollment_date).days + for e in completed_enrollments + if e.completion_date and e.enrollment_date + ) + avg_days_to_complete = total_days / completed_enrollments.count() if completed_enrollments.count() > 0 else 0 + + return {"completion_pace": f"{avg_days_to_complete:.0f} days/course"} + + +def get_all_completed_sessions(enrollments): + """Retrieve all completed sessions for a user's enrollments.""" + return [s for e in enrollments if hasattr(e, "progress") for s in e.progress.completed_sessions.all()] + + +def prepare_chart_data(enrollments): + """Prepare data for visualizing user progress in charts.""" + colors = ["255,99,132", "54,162,235", "255,206,86", "75,192,192", "153,102,255"] + + courses = [] + progress_dates, sessions_completed = [], [] + + for i, e in enumerate(enrollments): + color = colors[i % len(colors)] + # Basic course data with progress information + course_data = { + "title": e.course.title, + "color": color, + "progress": getattr(e.progress, "completion_percentage", 0), + "sessions_completed": e.progress.completed_sessions.count() if hasattr(e, "progress") else 0, + "total_sessions": e.course.sessions.count(), + } + + # Add time series data for courses with completed sessions + if hasattr(e, "progress") and e.progress.completed_sessions.exists(): + # Find the most recent active session date + last_session = max(e.progress.completed_sessions.all(), key=lambda s: s.start_time) + course_data["last_active"] = last_session.start_time.strftime("%b %d, %Y") + # Generate time series data for progress visualization + time_data = prepare_time_series_data(e, course_data["total_sessions"]) + course_data.update(time_data) + progress_dates.append(time_data["dates"]) + sessions_completed.append(time_data["sessions_points"]) + else: + # Default values for courses without progress + course_data.update({"last_active": "Not started", "progress_over_time": []}) + progress_dates.append([]) + sessions_completed.append([]) + + courses.append(course_data) + + return { + "courses": courses, + # Create a sorted list of all unique dates by flattening and deduplicating + "progress_dates": json.dumps(sorted(set(date for dates in progress_dates for date in dates))), + "sessions_completed": json.dumps(sessions_completed), + "courses_json": json.dumps(courses), + } + + +def prepare_time_series_data(enrollment, total_sessions): + """Generate time series data for progress visualization.""" + completed_sessions = ( + sorted(enrollment.progress.completed_sessions.all(), key=lambda s: s.start_time) + if hasattr(enrollment, "progress") + else [] + ) + + return { + # Calculate progress percentage for each completed session + "progress_over_time": [ + round(((idx + 1) / total_sessions) * 100, 1) if total_sessions else 0 + for idx, _ in enumerate(completed_sessions) + ], + # Create sequential session numbers + "sessions_points": list(range(1, len(completed_sessions) + 1)), + # Format session dates consistently + "dates": [s.start_time.strftime("%Y-%m-%d") for s in completed_sessions], + } + + +# map views + + +@login_required +def classes_map(request): + """View for displaying classes near the user.""" + now = timezone.now() + sessions = ( + Session.objects.filter(Q(start_time__gte=now) | Q(start_time__lte=now, end_time__gte=now)) + .filter(is_virtual=False, location__isnull=False) + .exclude(location="") + .order_by("start_time") + .select_related("course", "course__teacher") + ) + # Get filter parameters + course_id = request.GET.get("course") + teaching_style = request.GET.get("teaching_style") + # Apply filters + if course_id: + sessions = sessions.filter(course_id=course_id, status="published") + if teaching_style: + sessions = sessions.filter(teaching_style=teaching_style) + # Fetch only necessary course fields + courses = Course.objects.only("id", "title").order_by("title") + age_groups = Course._meta.get_field("level").choices + teaching_styles = list(set(Session.objects.values_list("teaching_style", flat=True))) + context = {"sessions": sessions, "courses": courses, "age_groups": age_groups, "teaching_style": teaching_styles} + return render(request, "web/classes_map.html", context) + + +@login_required +def map_data_api(request): + """API to return all live and ongoing class data in JSON format.""" + now = timezone.now() + sessions = ( + Session.objects.filter( + Q(start_time__gte=now) | Q(start_time__lte=now, end_time__gte=now) # Future or Live classes + ) + .filter(Q(is_virtual=False) & ~Q(location="")) + .select_related("course", "course__teacher") + ) + + course_id = request.GET.get("course") + age_group = request.GET.get("age_group") + + if course_id: + sessions = sessions.filter(course__id=course_id, status="published") + if age_group: + sessions = sessions.filter(course__level=age_group) + + logger.debug(f"API call with filters: course={course_id}, age={age_group}") + + map_data = [] + sessions_to_update = [] + # Limit geocoding to a reasonable number per request + MAX_GEOCODING_PER_REQUEST = 5 + geocoding_count = 0 + geocoding_errors = 0 + coordinate_errors = 0 + for session in sessions: + if not session.latitude or not session.longitude: + if geocoding_count >= MAX_GEOCODING_PER_REQUEST: + logger.warning(f"Geocoding limit reached ({MAX_GEOCODING_PER_REQUEST}). Skipping session {session.id}") + continue + geocoding_count += 1 + logger.info(f"Geocoding session {session.id} with location: {session.location}") + lat, lng = geocode_address(session.location) + if lat is not None and lng is not None: + session.latitude = lat + session.longitude = lng + sessions_to_update.append(session) + else: + geocoding_errors += 1 + logger.warning(f"Skipping session {session.id} due to failed geocoding") + continue + + try: + lat = float(session.latitude) + lng = float(session.longitude) + map_data.append( + { + "id": session.id, + "title": session.title, + "course_title": session.course.title, + "teacher": session.course.teacher.get_full_name() or session.course.teacher.username, + "start_time": session.start_time.isoformat(), + "end_time": session.end_time.isoformat(), + "location": session.location, + "lat": lat, + "lng": lng, + "price": str(session.price or session.course.price), + "url": session.get_absolute_url(), + "course": session.course.title, + "level": session.course.get_level_display(), + "is_virtual": session.is_virtual, + } + ) + except (ValueError, TypeError): + coordinate_errors += 1 + logger.warning( + f"Skipping session {session.id} due to invalid coordinates: " + f"lat={session.latitude}, lng={session.longitude}" + ) + continue + + if sessions_to_update: + logger.info(f"Batch updating coordinates for {len(sessions_to_update)} sessions") + Session.objects.bulk_update(sessions_to_update, ["latitude", "longitude"]) # Batch update + + # Log summary of issues + if geocoding_errors > 0 or coordinate_errors > 0: + logger.warning(f"Map data issues: {geocoding_errors} geocoding errors, {coordinate_errors} coordinate errors") + + logger.info(f"Found {len(map_data)} sessions with valid coordinates") + return JsonResponse({"sessions": map_data}) + + +GITHUB_REPO = "alphaonelabs/alphaonelabs-education-website" +GITHUB_API_BASE = "https://api.github.com" + +logger = logging.getLogger(__name__) + + +def github_api_request(endpoint, params=None, headers=None): + """ + Make a GitHub API request with consistent error handling and timeout. + Returns JSON response on success, empty dict on failure. + """ + try: + response = requests.get(endpoint, params=params, headers=headers, timeout=10) + if response.status_code == 200: + return response.json() + else: + logger.error(f"Failed API request to {endpoint}: {response.status_code} - {response.text}") + return {} + except requests.RequestException as e: + logger.error(f"Request error for {endpoint}: {e}") + return {} + + +def get_user_contribution_metrics(username, token): + """ + Use the GitHub GraphQL API to fetch all of the user's merged PRs (across all repos), + then filter by the target repo, implementing pagination to ensure complete data. + """ + graphql_endpoint = "https://api.github.com/graphql" + headers = {"Authorization": f"Bearer {token}"} + + query = """ + query($username: String!, $after: String) { + user(login: $username) { + pullRequests( + first: 100 + after: $after + states: MERGED + orderBy: { field: CREATED_AT, direction: DESC } + ) { + totalCount + pageInfo { + endCursor + hasNextPage + } + nodes { + additions + deletions + createdAt + repository { + nameWithOwner + } + } + } + } + } + """ + + all_filtered_prs = [] + after_cursor = None + + while True: + variables = {"username": username, "after": after_cursor} + try: + response = requests.post( + graphql_endpoint, json={"query": query, "variables": variables}, headers=headers, timeout=15 + ) + if response.status_code == 200: + data = response.json() + if data.get("data") and data["data"].get("user"): + pr_data = data["data"]["user"]["pullRequests"] + prs = pr_data["nodes"] + + # Filter PRs to the target repository (case insensitive) + target_repo = GITHUB_REPO.lower() + filtered_prs = [pr for pr in prs if pr["repository"]["nameWithOwner"].lower() == target_repo] + all_filtered_prs.extend(filtered_prs) + + # Check if there are more pages + if pr_data["pageInfo"]["hasNextPage"]: + after_cursor = pr_data["pageInfo"]["endCursor"] + else: + break + else: + logger.error("No user or PR data found in GraphQL response.") + break + else: + logger.error(f"GraphQL error: {response.status_code} - {response.text}") + break + except Exception as e: + logger.error(f"GraphQL request error: {e}") + break + + # Prepare final result structure + final_result = { + "data": {"user": {"pullRequests": {"totalCount": len(all_filtered_prs), "nodes": all_filtered_prs}}} + } + return final_result + + +def contributor_detail_view(request, username): + """ + View to display detailed information about a specific GitHub contributor. + Only accessible to staff members. + """ + cache_key = f"github_contributor_{username}" + cached_data = cache.get(cache_key) + if cached_data: + return render(request, "web/contributor_detail.html", cached_data) + + token = os.environ.get("GITHUB_TOKEN") + headers = {"Authorization": f"token {token}"} if token else {} + + # Initialize variables to store contributor data + user_data = {} + prs_created = 0 + prs_merged = 0 + issues_created = 0 + pr_reviews = 0 + pr_comments = 0 + issue_comments = 0 + lines_added = 0 + lines_deleted = 0 + first_contribution_date = "N/A" + issue_assignments = 0 + + user_endpoint = f"{GITHUB_API_BASE}/users/{username}" + user_data = github_api_request(user_endpoint, headers=headers) + if not user_data: + logger.error("User profile data could not be retrieved.") + + # Pull requests created + prs_created_json = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={"q": f"author:{username} type:pr repo:{GITHUB_REPO}"}, + headers=headers, + ) + prs_created = prs_created_json.get("total_count", 0) + + # Pull requests merged + prs_merged_json = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={"q": f"author:{username} type:pr repo:{GITHUB_REPO} is:merged"}, + headers=headers, + ) + prs_merged = prs_merged_json.get("total_count", 0) + + # Issues created + issues_json = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={"q": f"author:{username} type:issue repo:{GITHUB_REPO}"}, + headers=headers, + ) + issues_created = issues_json.get("total_count", 0) + + # Pull request reviews + reviews_json = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={"q": f"reviewer:{username} type:pr repo:{GITHUB_REPO}"}, + headers=headers, + ) + pr_reviews = reviews_json.get("total_count", 0) + + # Pull requests with comments + pr_comments_json = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={"q": f"commenter:{username} type:pr repo:{GITHUB_REPO}"}, + headers=headers, + ) + pr_comments = pr_comments_json.get("total_count", 0) + + # Issues with comments + issue_comments_json = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={"q": f"commenter:{username} type:issue repo:{GITHUB_REPO}"}, + headers=headers, + ) + issue_comments = issue_comments_json.get("total_count", 0) + + # Oldest PR creation date + prs_oldest = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={ + "q": f"author:{username} type:pr repo:{GITHUB_REPO}", + "sort": "created", + "order": "asc", + "per_page": 1, + }, + headers=headers, + ) + if prs_oldest.get("total_count", 0) > 0: + first_contribution_date = prs_oldest["items"][0].get("created_at", "N/A") + + # Issue assignments + issue_assignments_json = github_api_request( + f"{GITHUB_API_BASE}/search/issues", + params={"q": f"assignee:{username} type:issue repo:{GITHUB_REPO}"}, + headers=headers, + ) + issue_assignments = issue_assignments_json.get("total_count", 0) + metrics = get_user_contribution_metrics(username, token) + pr_data = metrics.get("data", {}).get("user", {}).get("pullRequests", {}).get("nodes", []) + for pr in pr_data: + lines_added += pr.get("additions", 0) + lines_deleted += pr.get("deletions", 0) + + # Update user_data with additional metrics + user_data.update( + { + "reactions_received": user_data.get("reactions_received", 0), + "mentorship_score": user_data.get("mentorship_score", 0), + "collaboration_score": user_data.get("collaboration_score", 0), + "issue_assignments": issue_assignments, + } + ) + + # Prepare context for the template + context = { + "user": user_data, + "prs_created": prs_created, + "prs_merged": prs_merged, + "pr_reviews": pr_reviews, + "issues_created": issues_created, + "issue_comments": issue_comments, + "pr_comments": pr_comments, + "lines_added": lines_added, + "lines_deleted": lines_deleted, + "first_contribution_date": first_contribution_date, + "chart_data": { + "prs_created": prs_created, + "prs_merged": prs_merged, + "pr_reviews": pr_reviews, + "issues_created": issues_created, + "issue_assignments": issue_assignments, + "pr_comments": pr_comments, + "issue_comments": issue_comments, + "lines_added": lines_added, + "lines_deleted": lines_deleted, + "first_contribution_date": (first_contribution_date if first_contribution_date != "N/A" else "N/A"), + }, + } + + # Cache for 1 hour + cache.set(cache_key, context, 3600) + return render(request, "web/contributor_detail.html", context) + + +@login_required +def all_study_groups(request): + """Display all study groups across courses.""" + # Get all study groups + groups = StudyGroup.objects.all().order_by("-created_at") + + # Group study groups by course + courses_with_groups = {} + for group in groups: + if group.course not in courses_with_groups: + courses_with_groups[group.course] = [] + courses_with_groups[group.course].append(group) + + # Handle creating a new study group + if request.method == "POST": + course_id = request.POST.get("course") + name = request.POST.get("name") + description = request.POST.get("description") + max_members = request.POST.get("max_members", 10) + is_private = request.POST.get("is_private", False) == "on" # Convert checkbox to boolean + + try: + # Validate the input + if not course_id or not name or not description: + raise ValueError("All fields are required") + + # Get the course + course = Course.objects.get(id=course_id) + + # Create the group + group = StudyGroup.objects.create( + course=course, + creator=request.user, + name=name, + description=description, + max_members=int(max_members), + is_private=is_private, + ) + + # Add the creator as a member + group.members.add(request.user) + + messages.success(request, "Study group created successfully!") + return redirect("study_group_detail", group_id=group.id) + except Course.DoesNotExist: + messages.error(request, "Course not found.") + except ValueError as e: + messages.error(request, str(e)) + except Exception as e: + messages.error(request, f"Error creating study group: {str(e)}") + + # Get user's enrollments for the create group form + enrollments = request.user.enrollments.filter(status="approved").select_related("course") + enrolled_courses = [enrollment.course for enrollment in enrollments] + + return render( + request, + "web/study/all_groups.html", + { + "courses_with_groups": courses_with_groups, + "enrolled_courses": enrolled_courses, + }, + ) + + +@login_required +def membership_checkout(request, plan_id: int) -> HttpResponse: + """Display the membership checkout page.""" + plan = get_object_or_404(MembershipPlan, id=plan_id) + + # Default to monthly billing + billing_period = request.GET.get("billing_period", "monthly") + + context = { + "plan": plan, + "billing_period": billing_period, + "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY, + } + + return render(request, "checkout.html", context) + + +@login_required +def create_membership_subscription(request) -> JsonResponse: + """Create a new membership subscription.""" + if request.method != "POST": + return JsonResponse({"error": "Invalid request method"}, status=400) + + try: + data = json.loads(request.body) + plan_id = data.get("plan_id") + payment_method_id = data.get("payment_method_id") + billing_period = data.get("billing_period", "monthly") + + if not all([plan_id, payment_method_id, billing_period]): + return JsonResponse({"error": "Missing required fields"}, status=400) + + # Create subscription using helper function + result = create_subscription( + user=request.user, + plan_id=plan_id, + payment_method_id=payment_method_id, + billing_period=billing_period, + ) + + if not result["success"]: + return JsonResponse({"error": result["error"]}, status=400) + + # Helper function to extract client_secret + def get_client_secret(subscription): + """Extract client_secret safely from a subscription object.""" + if ( + hasattr(subscription, "latest_invoice") + and subscription.latest_invoice + and hasattr(subscription.latest_invoice, "payment_intent") + ): + return subscription.latest_invoice.payment_intent.client_secret + return None + + return JsonResponse( + { + "subscription": result["subscription"], + "client_secret": get_client_secret(result["subscription"]), + }, + ) + + except json.JSONDecodeError as e: + logger.warning("Invalid JSON in create_membership_subscription: %s", str(e)) + return JsonResponse({"error": "Invalid JSON format"}, status=400) + except stripe.error.CardError as e: + logger.warning("Card error in create_membership_subscription: %s", str(e)) + return JsonResponse({"error": "Card payment failed"}, status=400) + except stripe.error.StripeError as e: + logger.error("Stripe error in create_membership_subscription: %s", str(e)) + return JsonResponse({"error": "Payment processing error"}, status=500) + except KeyError as e: + logger.warning("Missing key in create_membership_subscription: %s", str(e)) + return JsonResponse({"error": "Invalid request data"}, status=400) + except Exception as e: + logger.error("Unexpected error in create_membership_subscription: %s", str(e)) + return JsonResponse({"error": "An internal error occurred"}, status=500) + + +@login_required +def membership_success(request) -> HttpResponse: + """Display the membership success page.""" + try: + membership = request.user.membership + context = { + "membership": membership, + } + return render(request, "membership_success.html", context) + except (AttributeError, ObjectDoesNotExist): + messages.info(request, "You don't have an active membership subscription.") + return redirect("index") + + +@login_required +def membership_settings(request) -> HttpResponse: + """Display the membership settings page.""" + try: + membership = request.user.membership + + # Get Stripe invoices + if membership.stripe_customer_id: + setup_stripe() + invoices = stripe.Invoice.list(customer=membership.stripe_customer_id, limit=12) + else: + invoices = [] + + # Get subscription events + events = MembershipSubscriptionEvent.objects.filter(user=request.user).order_by("-created_at")[:10] + + context = { + "membership": membership, + "invoices": invoices.data if hasattr(invoices, "data") and invoices.data else [], + "events": events, + } + return render(request, "membership_settings.html", context) + except (AttributeError, ObjectDoesNotExist): + return redirect("index") + + +@login_required +def cancel_membership(request) -> HttpResponse: + """Cancel the user's membership subscription.""" + if request.method != "POST": + return redirect("membership_settings") + + try: + result = cancel_subscription(request.user) + + if result["success"]: + messages.success( + request, + "Your subscription has been cancelled and will end at the current billing period.", + ) + else: + messages.error(request, result["error"]) + + except stripe.error.StripeError: + logger.exception("Stripe error in cancel_membership") + messages.error(request, "An internal error occurred") + except ObjectDoesNotExist: + messages.error(request, "No membership found for your account.") + except Exception: + logger.exception("Unexpected error in cancel_membership") + messages.error(request, "An internal error occurred") + + return redirect("membership_settings") + + +@login_required +def reactivate_membership(request) -> HttpResponse: + """Reactivate a cancelled membership subscription.""" + if request.method != "POST": + return redirect("membership_settings") + + try: + result = reactivate_subscription(request.user) + + if result["success"]: + messages.success(request, "Your subscription has been reactivated.") + else: + messages.error(request, result["error"]) + + except stripe.error.StripeError as e: + logger.error("Stripe error in reactivate_membership: %s", str(e)) + messages.error(request, "An internal error occurred") + except ObjectDoesNotExist: + messages.error(request, "No membership found for your account.") + except Exception as e: + logger.error("Unexpected error in reactivate_membership: %s", str(e)) + messages.error(request, "An internal error occurred") + + return redirect("membership_settings") + + +@login_required +def update_payment_method(request) -> HttpResponse: + """Display the update payment method page.""" + try: + membership = request.user.membership + + # Get current payment method + if membership.stripe_customer_id: + setup_stripe() + payment_methods = stripe.PaymentMethod.list(customer=membership.stripe_customer_id, type="card") + current_payment_method = payment_methods.data[0] if payment_methods.data else None + else: + current_payment_method = None + + context = { + "membership": membership, + "current_payment_method": current_payment_method, + "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY, + } + return render(request, "update_payment_method.html", context) + except (AttributeError, ObjectDoesNotExist): + return redirect("membership_settings") + + +@login_required +def update_payment_method_api(request) -> JsonResponse: + """Update the payment method for a subscription.""" + if request.method != "POST": + return JsonResponse({"error": "Invalid request method"}, status=400) + + try: + data = json.loads(request.body) + payment_method_id = data.get("payment_method_id") + + if not payment_method_id: + return JsonResponse({"error": "Missing payment method ID"}, status=400) + + membership = request.user.membership + + if not membership.stripe_customer_id: + return JsonResponse({"error": "No active subscription found"}, status=400) + + setup_stripe() + + # Attach payment method to customer + stripe.PaymentMethod.attach(payment_method_id, customer=membership.stripe_customer_id) + + # Set as default payment method + stripe.Customer.modify( + membership.stripe_customer_id, + invoice_settings={"default_payment_method": payment_method_id}, + ) + + return JsonResponse({"success": True}) + + except stripe.error.CardError as e: + logger.warning("Card error in update_payment_method_api: %s", str(e)) + return JsonResponse({"error": "Card payment failed"}, status=400) + except stripe.error.InvalidRequestError as e: + logger.warning("Invalid request in update_payment_method_api: %s", str(e)) + return JsonResponse({"error": "Invalid payment method"}, status=400) + except stripe.error.StripeError as e: + logger.error("Stripe error in update_payment_method_api: %s", str(e)) + return JsonResponse({"error": "Payment processing error"}, status=500) + except Exception as e: + logger.error("Unexpected error in update_payment_method_api: %s", str(e)) + return JsonResponse({"error": "An internal error occurred"}, status=500) + + +def social_media_manager_required(user): + """Check if user has social media manager permissions.""" + return user.is_authenticated and (user.is_staff or getattr(user.profile, "is_social_media_manager", False)) + + +@user_passes_test(social_media_manager_required) +def get_twitter_client(): + """Initialize the Tweepy client.""" + auth = tweepy.OAuthHandler(settings.TWITTER_API_KEY, settings.TWITTER_API_SECRET_KEY) + auth.set_access_token(settings.TWITTER_ACCESS_TOKEN, settings.TWITTER_ACCESS_TOKEN_SECRET) + return tweepy.API(auth) + + +@user_passes_test(social_media_manager_required, login_url="/accounts/login/") +def social_media_dashboard(request): + # Fetch all posts that haven't been posted yet + posts = ScheduledPost.objects.filter(posted=False).order_by("-id") + return render(request, "social_media_dashboard.html", {"posts": posts}) + + +@user_passes_test(social_media_manager_required) +def post_to_twitter(request, post_id): + post = get_object_or_404(ScheduledPost, id=post_id) + if request.method == "POST": + client = get_twitter_client() + try: + if post.image: + # Upload the image file from disk + media = client.media_upload(post.image.path) + client.update_status(post.content, media_ids=[media.media_id]) + else: + client.update_status(post.content) + post.posted = True + post.posted_at = timezone.now() + post.save() + except Exception as e: + print(f"Error posting tweet: {e}") + return redirect("social_media_dashboard") + return redirect("social_media_dashboard") + + +@user_passes_test(social_media_manager_required) +def create_scheduled_post(request): + if request.method == "POST": + content = request.POST.get("content") + image = request.FILES.get("image") # Get the uploaded image, if provided. + if not content: + messages.error(request, "Post content cannot be empty.") + return redirect("social_media_dashboard") + ScheduledPost.objects.create( + content=content, image=image, scheduled_time=timezone.now() # This saves the image file. + ) + messages.success(request, "Post created successfully!") + return redirect("social_media_dashboard") + + +@user_passes_test(social_media_manager_required) +def delete_post(request, post_id): + """Delete a scheduled post.""" + post = get_object_or_404(ScheduledPost, id=post_id) + if request.method == "POST": + post.delete() + return redirect("social_media_dashboard") + + +def generate_discount_code(length=8): + return "".join(random.choices(string.ascii_uppercase + string.digits, k=length)) + + +@login_required +def apply_discount_via_referrer(request) -> HttpResponse: + """Apply a discount code when a user shares a course on Twitter. + + Args: + request: The HTTP request object + + Returns: + HttpResponse: A redirect to the profile page or an error response + """ + if request.method == "GET": + course_id = request.GET.get("course_id") + if not course_id: + return HttpResponseBadRequest("Course ID not provided.") + + course = get_object_or_404(Course, id=course_id) + + # Validate that the referrer is from Twitter + referrer = request.META.get("HTTP_REFERER", "").lower() + valid_twitter_domains = ["twitter.com", "t.co", "x.com"] + is_valid_referrer = any(domain in referrer for domain in valid_twitter_domains) + + # Skip the referrer check in development environment for testing + if settings.DEBUG: + logger.warning("Bypassing Twitter referrer check in DEBUG mode") + elif not is_valid_referrer: + messages.error(request, "You must click the link from Twitter to claim your discount.") + return redirect("profile") + # Create or retrieve an existing discount record. + discount = Discount.objects.filter(user=request.user, course=course, used=False).first() + if discount is None: + discount = Discount.objects.create( + user=request.user, + course=course, + code=generate_discount_code(), + discount_percentage=5.00, + valid_from=timezone.now(), + valid_until=default_valid_until(), + ) + + messages.success(request, "Thank you for sharing! Your discount code is now available in your profile.") + # Redirect user to their profile where discount codes are rendered. + return redirect("profile") + else: + return HttpResponseBadRequest("Invalid request method.") + + +def users_list(request: HttpRequest) -> HttpResponse: + """ + Display a list of users who have their profile set to public, + ordered by most recent updates. + """ + profiles = Profile.objects.filter(is_profile_public=True).select_related("user").order_by("-updated_at") + + # Add statistics for each user to create fun scorecards + for profile in profiles: + if profile.is_teacher: + # Teacher stats + courses = Course.objects.filter(teacher=profile.user).prefetch_related("enrollments", "reviews") + profile.total_courses = courses.count() + profile.total_students = sum(course.enrollments.filter(status="approved").count() for course in courses) + # Get average rating across all courses + course_ratings = [course.average_rating for course in courses if course.average_rating > 0] + profile.avg_rating = round(sum(course_ratings) / len(course_ratings), 1) if course_ratings else 0 + else: + # Student stats + enrollments = Enrollment.objects.filter(student=profile.user).select_related("course") + profile.total_courses = enrollments.count() + completed_enrollments = enrollments.filter(status="completed") + profile.total_completed = completed_enrollments.count() + + # Calculate average progress across all courses + total_progress = 0 + progress_count = 0 + enrollment_ids = [e.id for e in enrollments] + existing_progresses = { + p.enrollment_id: p for p in CourseProgress.objects.filter(enrollment_id__in=enrollment_ids) + } + + for enrollment in enrollments: + progress = existing_progresses.get(enrollment.id) + if not progress: + progress = CourseProgress.objects.create(enrollment=enrollment) + total_progress += progress.completion_percentage + progress_count += 1 + profile.avg_progress = round(total_progress / progress_count) if progress_count > 0 else 0 + + # Add achievements count + profile.achievements_count = Achievement.objects.filter(student=profile.user).count() + + # Pagination: 12 profiles per page + paginator = Paginator(profiles, 12) + page_number = request.GET.get("page") + page_obj = paginator.get_page(page_number) + + context = { + "page_obj": page_obj, + } + + return render(request, "users_list.html", context) + + +@login_required +def topic_vote(request, pk): + """Handle voting on a topic.""" + if request.method != "POST": + return JsonResponse({"error": "Only POST method allowed"}, status=405) + + try: + topic = ForumTopic.objects.get(pk=pk) + vote_type = request.POST.get("vote_type") + + if vote_type not in ["up", "down"]: + # For form submissions, redirect back with an error message if needed + messages.error(request, "Invalid vote type") + return redirect("topic_vote", pk=topic.id) + + # Check if user already voted on this topic + vote, created = ForumVote.objects.get_or_create( + user=request.user, topic=topic, defaults={"vote_type": vote_type} + ) + + if not created: + # User already voted, check if they're changing their vote + if vote.vote_type == vote_type: + # Same vote type, so remove the vote + vote.delete() + else: + # Different vote type, so update the vote + vote.vote_type = vote_type + vote.save() + + # After processing the vote, redirect back to the topic page + return redirect("forum_topic", category_slug=topic.category.slug, topic_id=topic.id) + + except ForumTopic.DoesNotExist: + # Handle case when topic doesn't exist + messages.error(request, "Topic not found") + return redirect("forum_categories") + + +@login_required +def reply_vote(request, pk): + """Handle voting on a reply.""" + if request.method != "POST": + return JsonResponse({"error": "Only POST method allowed"}, status=405) + + try: + reply = ForumReply.objects.get(pk=pk) + vote_type = request.POST.get("vote_type") + + if vote_type not in ["up", "down"]: + messages.error(request, "Invalid vote type") + return redirect("forum_topic", category_slug=reply.topic.category.slug, topic_id=reply.topic.id) + + # Check if user already voted on this reply + vote, created = ForumVote.objects.get_or_create( + user=request.user, reply=reply, defaults={"vote_type": vote_type} + ) + + if not created: + # User already voted, check if they're changing their vote + if vote.vote_type == vote_type: + # Same vote type, so remove the vote + vote.delete() + else: + # Different vote type, so update the vote + vote.vote_type = vote_type + vote.save() + + # After processing the vote, redirect back to the topic page + return redirect("forum_topic", category_slug=reply.topic.category.slug, topic_id=reply.topic.id) + + except ForumReply.DoesNotExist: + messages.error(request, "Reply not found") + return redirect("forum_categories") + + +def topic_detail(request, pk): + topic = get_object_or_404(ForumTopic, pk=pk) + + # Get the user's vote on this topic if any + user_topic_vote = None + if request.user.is_authenticated: + try: + vote = ForumVote.objects.get(topic=topic, user=request.user) + user_topic_vote = vote.vote_type + except ForumVote.DoesNotExist: + pass + + # Get user votes on replies + user_reply_votes = {} + if request.user.is_authenticated: + reply_votes = ForumVote.objects.filter(reply__topic=topic, user=request.user).values_list( + "reply_id", "vote_type" + ) + user_reply_votes = dict(reply_votes) + + context = { + "topic": topic, + "user_topic_vote": user_topic_vote, + "user_reply_votes": user_reply_votes, + # other context variables + } + + return render(request, "web/forum/topic.html", context) + + +def contributors_list_view(request): + # Check if cached data is available + cached_context = cache.get("contributors_context") + if cached_context: + return render(request, "web/contributors_list.html", cached_context) + + # Initialize a dictionary to track contributor stats + contributor_stats = {} + + # Function to add a contributor to our stats dictionary + def add_contributor(username, avatar_url, profile_url): + if username not in contributor_stats: + contributor_stats[username] = { + "username": username, + "avatar_url": avatar_url, + "profile_url": profile_url, + "merged_pr_count": 0, + "closed_pr_count": 0, + "open_pr_count": 0, + "total_pr_count": 0, + "prs_url": f"https://github.com/AlphaOneLabs/education-website/pulls?q=is:pr+author:{username}", + } + + try: + # Fetch closed PRs first (includes both merged and non-merged closed PRs) + closed_prs = [] + for page in range(1, 11): # Limit to 10 pages to prevent hitting API rate limits + response = github_api_request( + f"{GITHUB_API_BASE}/repos/AlphaOneLabs/education-website/pulls", + params={"state": "closed", "per_page": 100, "page": page}, + ) + if not response or len(response) == 0: + break + + closed_prs.extend(response) + time.sleep(0.5) # Add delay to avoid hitting rate limits + + # Process closed PRs + for pr in closed_prs: + username = pr["user"]["login"] + + # Skip bots and specific users + if "[bot]" in username or "dependabot" in username or username == "A1L13N": + continue + + avatar_url = pr["user"]["avatar_url"] + profile_url = pr["user"]["html_url"] + + # Add to our tracking + add_contributor(username, avatar_url, profile_url) + + # Update the appropriate count based on whether it was merged + if pr["merged_at"]: + contributor_stats[username]["merged_pr_count"] += 1 + else: + contributor_stats[username]["closed_pr_count"] += 1 + + # Now fetch open PRs + open_prs = [] + for page in range(1, 6): # Limit to 5 pages for open PRs + response = github_api_request( + f"{GITHUB_API_BASE}/repos/AlphaOneLabs/education-website/pulls", + params={"state": "open", "per_page": 100, "page": page}, + ) + if not response or len(response) == 0: + break + + open_prs.extend(response) + time.sleep(0.5) # Add delay to avoid hitting rate limits + + # Process open PRs + for pr in open_prs: + username = pr["user"]["login"] + + # Skip bots and specific users + if "[bot]" in username or "dependabot" in username or username == "A1L13N": + continue + + avatar_url = pr["user"]["avatar_url"] + profile_url = pr["user"]["html_url"] + + # Add to our tracking + add_contributor(username, avatar_url, profile_url) + + # Update open PR count + contributor_stats[username]["open_pr_count"] += 1 + + # Calculate total PR count and filter out users with no merged PRs + contributors = [] + for username, stats in contributor_stats.items(): + # Skip contributors with no merged PRs + if stats["merged_pr_count"] == 0: + continue + + # Calculate total PR count + stats["total_pr_count"] = stats["merged_pr_count"] + stats["closed_pr_count"] + stats["open_pr_count"] + + # Calculate a smart score that prioritizes merged PRs but penalizes imbalances + # Formula: (merged_pr_count * 10) - penalties for imbalanced contributions + smart_score = stats["merged_pr_count"] * 10 + + # Penalize if closed PRs are more than half of merged PRs (could indicate issues with code quality) + if stats["closed_pr_count"] > (stats["merged_pr_count"] / 2): + smart_score -= (stats["closed_pr_count"] - (stats["merged_pr_count"] / 2)) * 2 + + # Penalize if open PRs are more than merged PRs (could indicate abandonment issues) + if stats["open_pr_count"] > stats["merged_pr_count"]: + smart_score -= stats["open_pr_count"] - stats["merged_pr_count"] + + # Calculate a contribution ratio: merged/(total) - higher is better + if stats["total_pr_count"] > 0: + stats["contribution_ratio"] = stats["merged_pr_count"] / stats["total_pr_count"] + else: + stats["contribution_ratio"] = 0 + + # Store the smart score + stats["smart_score"] = smart_score + + contributors.append(stats) + + # Sort by smart score (primary) and then by merged PR count (secondary) + contributors.sort(key=lambda x: (x["smart_score"], x["merged_pr_count"]), reverse=True) + + # Store the context in cache for 12 hours + context = {"contributors": contributors} + cache.set("contributors_context", context, 12 * 60 * 60) + + return render(request, "web/contributors_list.html", context) + + except Exception as e: + # Log the error + print(f"Error fetching contributors: {e}") + # Return an empty list in case of error + return render(request, "web/contributors_list.html", {"contributors": []}) + + +@login_required +def video_request_list(request): + """View for listing video requests with optional category filtering.""" + # Get category filter from query params + selected_category = request.GET.get("category") + + # Base queryset + requests = VideoRequest.objects.select_related("requester", "category").order_by("-created_at") + + # Apply category filter if provided + if selected_category: + requests = requests.filter(category__slug=selected_category) + selected_category_obj = get_object_or_404(Subject, slug=selected_category) + selected_category_display = selected_category_obj.name + else: + selected_category_display = None + + # Get category counts for sidebar + category_counts = { + category.slug: VideoRequest.objects.filter(category=category).count() for category in Subject.objects.all() + } + + # Context + context = { + "requests": requests, + "categories": Subject.objects.all(), + "category_counts": category_counts, + "selected_category": selected_category, + "selected_category_display": selected_category_display, + } + + return render(request, "videos/request_list.html", context) + + +@login_required +def submit_video_request(request: HttpRequest) -> HttpResponse: + """View for submitting a new video request.""" + if request.method == "POST": + form = VideoRequestForm(request.POST) + if form.is_valid(): + video_request = form.save(commit=False) + video_request.requester = request.user + video_request.save() + + messages.success(request, "Your video request has been submitted successfully!") + return redirect("video_request_list") + else: + form = VideoRequestForm() + + return render(request, "videos/submit_request.html", {"form": form}) + + +class SurveyListView(LoginRequiredMixin, ListView): + model = Survey + template_name = "surveys/list.html" + login_url = "/accounts/login/" + + +class SurveyCreateView(LoginRequiredMixin, CreateView): + model = Survey + form_class = SurveyForm + template_name = "surveys/create.html" + login_url = "/accounts/login/" + + def form_valid(self, form): + form.instance.author = self.request.user + survey = form.save() + + # Process questions + question_texts = self.request.POST.getlist("question_text[]") + question_types = self.request.POST.getlist("question_type[]") + question_choices = self.request.POST.getlist("question_choices[]") + scale_mins = self.request.POST.getlist("scale_min[]") + scale_maxs = self.request.POST.getlist("scale_max[]") + + for i, (q_text, q_type) in enumerate(zip(question_texts, question_types)): + if q_text.strip(): + # Convert scale values to integers with proper error handling + scale_min = 1 + scale_max = 5 + + try: + if q_type == "scale" and i < len(scale_mins) and scale_mins[i]: + scale_min = int(scale_mins[i]) + if q_type == "scale" and i < len(scale_maxs) and scale_maxs[i]: + scale_max = int(scale_maxs[i]) + except (ValueError, IndexError): + # Use defaults if there's an error + scale_min = 1 + scale_max = 5 + + question = Question.objects.create( + survey=survey, + text=q_text.strip(), + type=q_type, # This should match your model field name + scale_min=scale_min, + scale_max=scale_max, + ) + + # Handle choices based on question type + if q_type == "true_false": + Choice.objects.create(question=question, text="True") + Choice.objects.create(question=question, text="False") + elif q_type == "scale": + for num in range(question.scale_min, question.scale_max + 1): + Choice.objects.create(question=question, text=str(num)) + elif q_type in ["mcq", "checkbox"]: + # Make sure we have choices for this question + if i < len(question_choices): + for choice_text in question_choices[i].split("\n"): + if choice_text.strip(): + Choice.objects.create(question=question, text=choice_text.strip()) + + return redirect("surveys") + + +class SurveyDetailView(LoginRequiredMixin, DetailView): + model = Survey + template_name = "surveys/detail.html" + login_url = "/accounts/login/" + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + # Check if user has already submitted this survey + context["already_submitted"] = Response.objects.filter( + user=self.request.user, question__survey=self.object + ).exists() + # Check if user is the creator of this survey + context["is_creator"] = self.object.author == self.request.user + return context + + +@login_required +def submit_survey(request, pk): + survey = get_object_or_404(Survey, pk=pk) + + # Check if user already submitted + if Response.objects.filter(user=request.user, question__survey=survey).exists(): + messages.error(request, "You've already submitted this survey!") + return redirect("survey-detail", pk=survey.id) + + if request.method == "POST": + for question in survey.question_set.all(): + if question.required and not request.POST.get(f"question_{question.id}"): + messages.error(request, f"Please answer required question: {question.text}") + return redirect("survey-detail", pk=survey.id) + + if question.type == "checkbox": + choices = request.POST.getlist(f"question_{question.id}") + for choice_id in choices: + try: + choice = Choice.objects.get(id=choice_id) + if choice.question_id == question.id: + Response.objects.create(user=request.user, question=question, choice=choice) + else: + messages.error(request, "Invalid choice selected") + return redirect("survey-detail", pk=survey.id) + except Choice.DoesNotExist: + messages.error(request, "Invalid choice selected") + return redirect("survey-detail", pk=survey.id) + elif question.type == "text": + Response.objects.create( + user=request.user, question=question, text_answer=request.POST.get(f"question_{question.id}") + ) + else: + choice_id = request.POST.get(f"question_{question.id}") + if choice_id: + try: + choice = Choice.objects.get(id=choice_id) + if choice.question_id == question.id: + Response.objects.create(user=request.user, question=question, choice=choice) + else: + messages.error(request, "Invalid choice selected") + return redirect("survey-detail", pk=survey.id) + except Choice.DoesNotExist: + messages.error(request, "Invalid choice selected") + return redirect("survey-detail", pk=survey.id) + + messages.success(request, "Survey submitted successfully!") + return redirect("survey-results", pk=survey.id) + + return redirect("survey-detail", pk=survey.id) + + +class SurveyResultsView(LoginRequiredMixin, DetailView): + model = Survey + template_name = "surveys/results.html" + login_url = "/accounts/login/" + + def get_context_data(self, **kwargs): + context = super().get_context_data(**kwargs) + + # Process survey results + results = [] + total_participants = 0 + most_answered_question = None + max_responses = 0 + top_choice = None + bottom_choice = None + overall_top_choice_count = 0 + overall_bottom_choice_count = float("inf") + total_possible_responses = 0 + total_actual_responses = 0 + avg_completion_time = None + context["avg_completion_time"] = avg_completion_time + + for question in self.object.question_set.all(): + choices_data = [] + question_total = 0 + + # Process each choice for this question + for choice in question.choice_set.all(): + count = choice.response_set.count() if hasattr(choice, "response_set") else 0 + + question_total += count + choices_data.append({"text": choice.text, "count": count}) + + if question_total == 0: + continue + if question_total > 0: + total_possible_responses += total_participants * 1 # Each participant could answer this question + total_actual_responses += question_total + + if question_total > max_responses: + max_responses = question_total + most_answered_question = question + + for choice in choices_data: + choice["percentage"] = round((choice["count"] / question_total * 100), 1) if question_total > 0 else 0 + + if choice["count"] > overall_top_choice_count: + overall_top_choice_count = choice["count"] + top_choice = choice + + if choice["count"] > 0 and choice["count"] < overall_bottom_choice_count: + overall_bottom_choice_count = choice["count"] + bottom_choice = choice + + results.append({"question": question, "choices": choices_data, "total": question_total}) + + total_participants = max(total_participants, question_total) + engagement_score = 0 + if total_possible_responses > 0: + engagement_score = (total_actual_responses / total_possible_responses) * 100 + + context["engagement_score"] = round(engagement_score, 1) + target_participants = getattr(self.object, "target_participants", 100) # default to 100 if not set + response_rate = (total_participants / target_participants * 100) if target_participants > 0 else 0 + + context.update( + { + "results": results, + "total_participants": total_participants, + "response_rate": min(response_rate, 100), # Cap at 100% + "most_answered_question": most_answered_question, + "top_choice": top_choice, + "bottom_choice": bottom_choice, + "is_creator": self.object.author == self.request.user if hasattr(self.object, "author") else False, + } + ) + + chart_data = [] + for result in results: + chart_data.append( + { + "question_id": result["question"].id, + "labels": [choice["text"] for choice in result["choices"]], + "data": [choice["count"] for choice in result["choices"]], + } + ) + context["chart_data_json"] = json.dumps(chart_data) + + return context + + +class SurveyDeleteView(LoginRequiredMixin, DeleteView): + model = Survey + success_url = reverse_lazy("surveys") # Use reverse_lazy + template_name = "surveys/delete.html" + login_url = "/accounts/login/" + + def get_queryset(self): + # Override queryset to only allow creator to access the survey for deletion + base_qs = super().get_queryset() + return base_qs.filter(author=self.request.user) + + def handle_no_permission(self): + messages.error(self.request, "You can only delete surveys that you created.") + return redirect("surveys") + + +@login_required +def join_session_waiting_room(request, course_slug): + """View for joining a session waiting room for the next session of a course.""" + course = get_object_or_404(Course, slug=course_slug) + + # Get or create the session waiting room for this course + session_waiting_room, created = WaitingRoom.objects.get_or_create( + course=course, status="open", defaults={"status": "open"} + ) + + # Check if the waiting room is open + if session_waiting_room.status != "open": + messages.error(request, "This session waiting room is no longer open for joining.") + return redirect("course_detail", slug=course_slug) + + # Add the user to participants if not already in + if request.user not in session_waiting_room.participants.all(): + session_waiting_room.participants.add(request.user) + next_session = session_waiting_room.get_next_session() + if next_session: + next_session_date = next_session.start_time.strftime("%B %d, %Y at %I:%M %p") + messages.success( + request, + f"You have joined the waiting room for the next session of {course.title}. " + f"Next session is on {next_session_date}.", + ) + else: + messages.success( + request, + f"You have joined the waiting room for the next session of {course.title}. " + f"You'll be notified when a new session is scheduled.", + ) + notify_teacher_waiting_room_join(session_waiting_room, request.user) + else: + messages.info(request, "You are already in the waiting room for the next session of this course.") + + return redirect("course_detail", slug=course_slug) + + +@login_required +def leave_session_waiting_room(request, course_slug): + """View for leaving a session waiting room.""" + course = get_object_or_404(Course, slug=course_slug) + + try: + session_waiting_room = WaitingRoom.objects.get(course=course, status="open") + except WaitingRoom.DoesNotExist: + messages.info(request, "No session waiting room found for this course.") + return redirect("course_detail", slug=course_slug) + + # Remove the user from participants + if request.user in session_waiting_room.participants.all(): + session_waiting_room.participants.remove(request.user) + messages.success(request, f"You have left the session waiting room for {course.title}") + else: + messages.info(request, "You are not in the session waiting room for this course.") + + return redirect("course_detail", slug=course_slug) diff --git a/web/virtual_lab/__init__.py b/web/virtual_lab/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/web/virtual_lab/apps.py b/web/virtual_lab/apps.py new file mode 100644 index 0000000..fc003d2 --- /dev/null +++ b/web/virtual_lab/apps.py @@ -0,0 +1,10 @@ +"""Django AppConfig for the Virtual Lab application.""" + +from django.apps import AppConfig + + +class VirtualLabConfig(AppConfig): + """Configuration for the Virtual Lab Django application.""" + + default_auto_field = "django.db.models.BigAutoField" + name = "web.virtual_lab" diff --git a/web/virtual_lab/css/virtual_lab.css b/web/virtual_lab/css/virtual_lab.css new file mode 100644 index 0000000..e69de29 diff --git a/web/virtual_lab/models.py b/web/virtual_lab/models.py new file mode 100644 index 0000000..e69de29 diff --git a/web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js b/web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js new file mode 100644 index 0000000..42149bd --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/chemistry/ph_indicator.js @@ -0,0 +1,138 @@ +// static/virtual_lab/js/chemistry/ph_indicator.js + +const width = 600, height = 400; + +// Canvases & contexts +const indCv = document.getElementById('indicator-canvas'), + indCtx = indCv.getContext('2d'); +const dropCv = document.getElementById('drop-canvas'), + dropCtx = dropCv.getContext('2d'); +const confCv = document.getElementById('confetti-canvas'), + confCtx = confCv.getContext('2d'); + +const updateBtn = document.getElementById('update-btn'), + resetBtn = document.getElementById('reset-btn'), + hintEl = document.getElementById('hint'), + propEl = document.getElementById('property'), + phInput = document.getElementById('solution-ph'); + +let confettiParticles = []; + +// 1. pH → color +function getColor(ph) { + if (ph < 3) return '#ff0000'; + if (ph < 6) return '#ff9900'; + if (ph < 8) return '#ffff00'; + if (ph < 11) return '#66ff66'; + return '#0000ff'; +} + +// 2. pH → property +function getProperty(ph) { + if (ph < 7) return '{% trans "Acidic" %}'; + if (ph === 7) return '{% trans "Neutral" %}'; + return '{% trans "Basic" %}'; +} + +// Draw the main indicator rectangle + pH label +function drawIndicator(ph) { + indCtx.clearRect(0, 0, width, height); + // Fill + indCtx.fillStyle = getColor(ph); + indCtx.fillRect(100, 75, 400, 250); + // Border pulse + indCtx.lineWidth = 8; + indCtx.strokeStyle = '#333'; + indCtx.strokeRect(100, 75, 400, 250); + // Label + indCtx.fillStyle = '#000'; + indCtx.font = '24px Arial'; + indCtx.fillText(`pH: ${ph.toFixed(1)}`, 260, 360); +} + +// Animate a single drop falling & splashing +function animateDrop(ph) { + dropCtx.clearRect(0,0,width,height); + const dropX = 300, startY = 0, groundY = 75; + let y = startY; + const id = setInterval(() => { + dropCtx.clearRect(0,0,width,height); + dropCtx.fillStyle = '#66b3ff'; + dropCtx.beginPath(); + dropCtx.arc(dropX, y, 6, 0, 2*Math.PI); + dropCtx.fill(); + y += 8; + if (y > groundY) { + clearInterval(id); + // Splash circle + let r = 0; + const sid = setInterval(()=>{ + dropCtx.clearRect(0,0,width,height); + dropCtx.beginPath(); + dropCtx.arc(dropX, groundY, r, 0, 2*Math.PI); + dropCtx.strokeStyle = '#66b3ff'; + dropCtx.lineWidth = 2; + dropCtx.stroke(); + r += 2; + if (r > 40) { + clearInterval(sid); + dropCtx.clearRect(0,0,width,height); + } + }, 30); + } + }, 30); +} + +// Create confetti particles when neutral +function spawnConfetti() { + confettiParticles = Array.from({length:100}, () => ({ + x: Math.random()*width, + y: -10, + vy: 2 + Math.random()*2, + color: `hsl(${Math.random()*360},70%,60%)` + })); + requestAnimationFrame(updateConfetti); +} + +function updateConfetti() { + confCtx.clearRect(0,0,width,height); + confettiParticles.forEach(p => { + confCtx.fillStyle = p.color; + confCtx.fillRect(p.x, p.y, 6, 6); + p.y += p.vy; + }); + confettiParticles = confettiParticles.filter(p => p.y < height); + if (confettiParticles.length) requestAnimationFrame(updateConfetti); +} + +// Update entire UI on pH change +function updateUI(ph) { + drawIndicator(ph); + animateDrop(ph); + hintEl.innerText = `🎉 Indicator shows ${getProperty(ph)}!`; + propEl.innerText = `{% trans "Solution is" %} ${getProperty(ph)}.`; + if (ph === 7) spawnConfetti(); +} + +// Button handlers +updateBtn.addEventListener('click', ()=>{ + let ph = parseFloat(phInput.value); + if (isNaN(ph) || ph < 0 || ph > 14) { + hintEl.innerText = '{% trans "Please enter a valid pH between 0 and 14." %}'; + return; + } + updateUI(ph); +}); + +resetBtn.addEventListener('click', ()=>{ + indCtx.clearRect(0,0,width,height); + dropCtx.clearRect(0,0,width,height); + confCtx.clearRect(0,0,width,height); + phInput.value = 7; + hintEl.innerText = '{% trans "Enter a pH value (0–14) and click Update to see the color change." %}'; + propEl.innerText = ''; + drawIndicator(7); +}); + +// Initial draw +window.addEventListener('load', ()=> drawIndicator(7)); diff --git a/web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js b/web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js new file mode 100644 index 0000000..15bd316 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/chemistry/precipitation.js @@ -0,0 +1,134 @@ +// static/virtual_lab/js/chemistry/precipitation.js + +// Canvases +const beakerCanvas = document.getElementById('beaker-canvas'); +const bctx = beakerCanvas.getContext('2d'); +const swirlCanvas = document.getElementById('swirl-canvas'); +const sctx = swirlCanvas.getContext('2d'); +const precipCanvas = document.getElementById('precip-canvas'); +const pctx = precipCanvas.getContext('2d'); + +// Controls & status +const addBtn = document.getElementById('add-reagent'); +const stirBtn = document.getElementById('stir-btn'); +const resetBtn = document.getElementById('reset-btn'); +const hintEl = document.getElementById('hint'); +const propEl = document.getElementById('property'); + +let swirlAngle = 0, + swirlRAF, + precipParticles = [], + stage = 0; // 0=init,1=reagent,2=stirring,3=precipitating,4=done + +// Draw beaker outline +function drawBeaker() { + bctx.clearRect(0,0,600,400); + bctx.strokeStyle = '#333'; + bctx.lineWidth = 3; + bctx.strokeRect(200,100,200,250); +} + +// Swirl animation +function drawSwirl() { + sctx.clearRect(0,0,600,400); + const cx=300, cy=300, r=100; + sctx.strokeStyle = 'rgba(128,0,128,0.5)'; + sctx.lineWidth = 4; + sctx.beginPath(); + sctx.arc(cx,cy,r, swirlAngle, swirlAngle + Math.PI*1.5); + sctx.stroke(); + swirlAngle += 0.05; + swirlRAF = requestAnimationFrame(drawSwirl); +} + +// Start stirring +function startStir() { + stage = 2; + updateHint('🌀 Stirring to initiate precipitation...'); + drawBeaker(); + drawSwirl(); + stirBtn.disabled = true; + stirBtn.classList.add('opacity-50'); + setTimeout(stopStir, 2000); +} + +// Stop swirling and spawn precipitate +function stopStir() { + cancelAnimationFrame(swirlRAF); + sctx.clearRect(0,0,600,400); + stage = 3; + updateHint('🌧️ Precipitate forming...'); + spawnParticles(); +} + +// Spawn and animate precipitate +function spawnParticles() { + precipParticles = []; + for (let i=0; i<150; i++) { + precipParticles.push({ + x: 220 + Math.random()*160, + y: 110, + vy: 1 + Math.random()*1.5 + }); + } + animateParticles(); +} + +// Animate particles falling +function animateParticles() { + pctx.clearRect(0,0,600,400); + precipParticles.forEach(p => { + pctx.fillStyle = '#666'; + pctx.beginPath(); + pctx.arc(p.x, p.y, 4, 0,2*Math.PI); + pctx.fill(); + p.y += p.vy; + }); + precipParticles = precipParticles.filter(p => p.y < 350); + if (precipParticles.length) { + requestAnimationFrame(animateParticles); + } else { + stage = 4; + updateHint('✅ Precipitation complete!'); + propEl.innerText = 'Precipitate Present'; + } +} + +// Update hint text +function updateHint(txt) { + hintEl.innerText = txt; +} + +// Reset everything +function resetAll() { + cancelAnimationFrame(swirlRAF); + precipParticles = []; + sctx.clearRect(0,0,600,400); + pctx.clearRect(0,0,600,400); + propEl.innerText = ''; + stage = 0; + updateHint('Click Add Reagent to begin.'); + addBtn.disabled = false; + stirBtn.disabled = true; + stirBtn.classList.add('opacity-50'); + drawBeaker(); +} + +// Event handlers +addBtn.addEventListener('click', () => { + stage = 1; + updateHint('➕ Reagent added! Now stir the solution.'); + addBtn.disabled = true; + stirBtn.disabled = false; + stirBtn.classList.remove('opacity-50'); +}); +stirBtn.addEventListener('click', startStir); +resetBtn.addEventListener('click', resetAll); + +// Initial setup +window.addEventListener('load', () => { + drawBeaker(); + updateHint('Click Add Reagent to begin.'); + stirBtn.disabled = true; + stirBtn.classList.add('opacity-50'); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js b/web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js new file mode 100644 index 0000000..d3c7f79 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/chemistry/reaction_rate.js @@ -0,0 +1,82 @@ +// static/virtual_lab/js/chemistry/reaction_rate.js + +const canvas = document.getElementById('reaction-canvas'); +const ctx = canvas.getContext('2d'); + +let initialConc, conc, time = 0, loopID; + +// Draws a test-tube shape and fills it proportional to conc +function drawTestTube(c) { + ctx.clearRect(0,0,600,400); + // Tube outline + ctx.strokeStyle = '#555'; + ctx.lineWidth = 4; + ctx.strokeRect(250,50,100,300); + // Liquid fill + const fillHeight = Math.max(0, Math.min(300, (c/initialConc)*300)); + ctx.fillStyle = '#a6f6a6'; + ctx.fillRect(254,350-fillHeight,92,fillHeight); + // Label concentration + ctx.fillStyle = '#000'; + ctx.font = '16px Arial'; + ctx.fillText(`[A]: ${c.toFixed(2)} M`, 20, 380); +} + +// Provides textual hints based on current conc +function updateHint(c) { + const hint = document.getElementById('hint'); + if (c <= 0) hint.innerText = '{% trans "Reaction has completed!" %}'; + else if (c <= initialConc/2) hint.innerText = '{% trans "Half-life reached." %}'; + else hint.innerText = '{% trans "Reaction proceeding..." %}'; +} + +// Displays final “Reaction Complete” message +function displayProperty() { + document.getElementById('property').innerText = '{% trans "Reaction Complete" %}'; +} + +// Advances the reaction in small time steps +function startReaction() { + initialConc = parseFloat(document.getElementById('reactant-conc').value) || 1.0; + conc = initialConc; + time = 0; + clearInterval(loopID); + document.getElementById('property').innerText = ''; + + loopID = setInterval(() => { + if (conc <= 0.01) { + clearInterval(loopID); + conc = 0; + drawTestTube(0); + document.getElementById('elapsed-time').innerText = time; + updateHint(0); + displayProperty(); + return; + } + // Simple first-order decay: dc/dt = -k * c + const k = 0.1; // rate constant + conc -= k * conc * 0.5; // ∆t = 0.5 s + time += 0.5; + drawTestTube(conc); + document.getElementById('elapsed-time').innerText = time.toFixed(1); + updateHint(conc); + }, 500); +} + +// Resets simulation +function resetReaction() { + clearInterval(loopID); + document.getElementById('elapsed-time').innerText = '0'; + document.getElementById('hint').innerText = ''; + document.getElementById('property').innerText = ''; + initialConc = parseFloat(document.getElementById('reactant-conc').value) || 1.0; + conc = initialConc; + drawTestTube(conc); +} + +// Initialize on load +window.addEventListener('load', () => { + initialConc = parseFloat(document.getElementById('reactant-conc').value) || 1.0; + conc = initialConc; + drawTestTube(conc); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js b/web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js new file mode 100644 index 0000000..f5e570c --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/chemistry/solubility.js @@ -0,0 +1,73 @@ +// static/virtual_lab/js/chemistry/solubility.js + +const canvas = document.getElementById('solubility-canvas'); +const ctx = canvas.getContext('2d'); + +let dissolved = 0; +const limit = 10; // grams + +// Draws beaker and liquid fill based on dissolved amount +function drawBeaker() { + ctx.clearRect(0, 0, 600, 400); + // Beaker outline + ctx.strokeStyle = '#333'; + ctx.lineWidth = 2; + ctx.strokeRect(200, 100, 200, 250); + // Liquid fill + const height = Math.min((dissolved / limit) * 240, 240); + ctx.fillStyle = '#f3e6b8'; + ctx.fillRect(202, 350 - height, 196, height); + // Label + ctx.fillStyle = '#000'; + ctx.font = '16px Arial'; + ctx.fillText(`${dissolved.toFixed(1)}g / ${limit}g`, 250, 380); +} + +// Updates hint text based on current dissolved amount +function updateHint() { + const hintEl = document.getElementById('hint'); + if (dissolved < limit) { + hintEl.innerText = '🔽 Solution is unsaturated. Keep adding solute.'; + } else if (dissolved === limit) { + hintEl.innerText = '✅ Saturation point reached!'; + } else { + hintEl.innerText = '⚠️ Supersaturated! Excess solute will precipitate.'; + } +} + +// Displays final property once user is done +function displayProperty() { + const propEl = document.getElementById('property'); + if (dissolved < limit) { + propEl.innerText = 'Solution is Unsaturated'; + } else if (dissolved === limit) { + propEl.innerText = 'Solution is Saturated'; + } else { + propEl.innerText = 'Solution is Supersaturated'; + } +} + +// Called when user clicks “Add Solute” +function addSolute() { + const amtInput = parseFloat(document.getElementById('solute-amt').value) || 0; + dissolved += amtInput; + document.getElementById('dissolved-amt').innerText = dissolved.toFixed(1); + drawBeaker(); + updateHint(); + displayProperty(); +} + +// Called when user clicks “Reset” +function resetSolubility() { + dissolved = 0; + document.getElementById('dissolved-amt').innerText = '0'; + document.getElementById('property').innerText = ''; + drawBeaker(); + updateHint(); +} + +// Initial render on page load +window.addEventListener('load', () => { + drawBeaker(); + updateHint(); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/chemistry/titration.js b/web/virtual_lab/static/virtual_lab/js/chemistry/titration.js new file mode 100644 index 0000000..a5704d0 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/chemistry/titration.js @@ -0,0 +1,117 @@ +// static/virtual_lab/js/chemistry/titration.js + +const beakerCanvas = document.getElementById('titration-canvas'); +const bctx = beakerCanvas.getContext('2d'); +const dropCanvas = document.getElementById('drop-canvas'); +const dctx = dropCanvas.getContext('2d'); + +let titrantVolume = 0, loopID; + +// Draw beaker + liquid +function drawBeaker(pH) { + bctx.clearRect(0,0,600,400); + bctx.fillStyle = '#ccc'; bctx.fillRect(200,100,200,250); + bctx.fillStyle = getColor(pH); bctx.fillRect(205,105,190,240); + bctx.strokeStyle = '#333'; bctx.strokeRect(200,100,200,250); + bctx.fillStyle = '#000'; bctx.font = '16px Arial'; + bctx.fillText(`pH: ${pH.toFixed(2)}`, 240, 380); +} + +// Indicator color mapping +function getColor(pH) { + if (pH < 4) return '#ff4d4d'; + if (pH < 6) return '#ff944d'; + if (pH < 7.5) return '#ffff66'; + if (pH < 9) return '#66ff99'; + return '#66b3ff'; +} + +// Compute pH +function computePH(aC,bC,aV,bV) { + const molA = aC*aV/1000, molB = bC*bV/1000; + const net = molB - molA, totV = (aV + bV)/1000; + if (Math.abs(net) < 1e-6) return 7; + return net < 0 + ? -Math.log10(-net/totV) + : 14 + Math.log10(net/totV); +} + +// Update the hint message +function updateHint(pH) { + const hint = document.getElementById('hint'); + if (pH < 3) hint.innerText = '🔴 Very acidic! Add more base slowly.'; + else if (pH < 6) hint.innerText = '🟠 Still acidic—keep titrant coming.'; + else if (pH < 6.5) hint.innerText = '🟡 Approaching endpoint—go slow!'; + else if (pH < 7.5) hint.innerText = '🟢 Almost neutral—nice!'; + else if (pH < 9) hint.innerText = '🔵 Slightly basic now.'; + else hint.innerText = '💙 Basic—endpoint passed.'; +} + +// Display final property +function displayProperty(pH) { + const propEl = document.getElementById('property'); + let prop; + if (pH < 7) prop = '{% trans "Acidic" %}'; + else if (pH === 7) prop = '{% trans "Neutral" %}'; + else prop = '{% trans "Basic" %}'; + propEl.innerText = `{% trans "Solution is" %} ` + prop; +} + +// Animate one drop +function animateDrop() { + dctx.clearRect(0,0,600,400); + let y = 0, x = 300; + const id = setInterval(()=>{ + dctx.clearRect(0,0,600,400); + dctx.fillStyle = '#66b3ff'; + dctx.beginPath(); dctx.arc(x,y,6,0,2*Math.PI); dctx.fill(); + y += 5; + if (y > 110) { + clearInterval(id); + setTimeout(()=> dctx.clearRect(0,0,600,400), 50); + } + }, 20); +} + +// Start titration +function startTitration() { + const aC = parseFloat(document.getElementById('acid-conc').value); + const bC = parseFloat(document.getElementById('base-conc').value); + const aV = parseFloat(document.getElementById('acid-vol').value); + titrantVolume = 0; + clearInterval(loopID); + + loopID = setInterval(()=>{ + titrantVolume += 0.2; + if (titrantVolume > 50) { + clearInterval(loopID); + const finalPH = computePH(aC,bC,aV,titrantVolume); + displayProperty(finalPH); + return; + } + animateDrop(); + setTimeout(()=>{ + const pH = computePH(aC,bC,aV,titrantVolume); + drawBeaker(pH); + document.getElementById('titrant-volume').innerText = titrantVolume.toFixed(1); + updateHint(pH); + }, 400); + }, 600); +} + +// Reset everything +function resetTitration() { + clearInterval(loopID); + dctx.clearRect(0,0,600,400); + titrantVolume = 0; + document.getElementById('titrant-volume').innerText = '0'; + document.getElementById('hint').innerText = ''; + document.getElementById('property').innerText = ''; + drawBeaker(1); +} + +// Initial draw +window.addEventListener('load', () => { + drawBeaker(1); + updateHint(1); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/code_editor.js b/web/virtual_lab/static/virtual_lab/js/code_editor.js new file mode 100644 index 0000000..f531817 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/code_editor.js @@ -0,0 +1,53 @@ +// static/virtual_lab/js/code_editor.js + +// Simple CSRF helper +function getCookie(name) { + const match = document.cookie.match(new RegExp(`(^| )${name}=([^;]+)`)); + return match ? decodeURIComponent(match[2]) : null; +} + +// Bootstrap Ace +const editor = ace.edit("editor"); +editor.setTheme("ace/theme/github"); +editor.session.setMode("ace/mode/python"); +editor.setOptions({ fontSize: "14px", showPrintMargin: false }); + +const runBtn = document.getElementById("run-btn"); +const outputEl = document.getElementById("output"); +const stdinEl = document.getElementById("stdin-input"); +const langSel = document.getElementById("language-select"); + +runBtn.addEventListener("click", () => { + const code = editor.getValue(); + const stdin = stdinEl.value; + const language = langSel.value; + + if (!code.trim()) { + outputEl.textContent = "🛑 Please type some code first."; + return; + } + outputEl.textContent = "Running…"; + runBtn.disabled = true; + + fetch(window.EVALUATE_CODE_URL, { + method: "POST", + headers: { + "Content-Type": "application/json", + "X-CSRFToken": getCookie("csrftoken") + }, + body: JSON.stringify({ code, language, stdin }) + }) + .then(res => res.json()) + .then(data => { + let out = ""; + if (data.stderr) out += `ERROR:\n${data.stderr}\n`; + if (data.stdout) out += data.stdout; + outputEl.textContent = out || "[no output]"; + }) + .catch(err => { + outputEl.textContent = `Request failed: ${err.message}`; + }) + .finally(() => { + runBtn.disabled = false; + }); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/common.js b/web/virtual_lab/static/virtual_lab/js/common.js new file mode 100644 index 0000000..f7b3915 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/common.js @@ -0,0 +1,41 @@ +// Helper to get the CSRF token from cookies: +function getCSRFToken() { + const name = 'csrftoken'; + const cookies = document.cookie.split(';'); + for (let c of cookies) { + c = c.trim(); + if (c.startsWith(name + '=')) { + return decodeURIComponent(c.substring(name.length + 1)); + } + } + return ''; +} + +// A simple wrapper for POSTing JSON with CSRF: +function ajaxPost(url, data, onSuccess, onError) { + fetch(url, { + method: 'POST', + headers: { + 'Content-Type': 'application/json', + 'X-CSRFToken': getCSRFToken(), + }, + body: JSON.stringify(data), + }) + .then((resp) => { + if (!resp.ok) throw new Error('Network response was not OK'); + return resp.json(); + }) + .then(onSuccess) + .catch(onError); +} + +// A simple wrapper for GETting JSON: +function ajaxGet(url, onSuccess, onError) { + fetch(url) + .then((resp) => { + if (!resp.ok) throw new Error('Network response was not OK'); + return resp.json(); + }) + .then(onSuccess) + .catch(onError); +} diff --git a/web/virtual_lab/static/virtual_lab/js/physics_electrical_circuit.js b/web/virtual_lab/static/virtual_lab/js/physics_electrical_circuit.js new file mode 100644 index 0000000..a3eb268 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/physics_electrical_circuit.js @@ -0,0 +1,404 @@ +// web/virtual_lab/static/virtual_lab/js/physics_electrical_circuit.js + +document.addEventListener("DOMContentLoaded", () => { + // ==== 1. Tutorial Overlay Logic ==== + const tutorialOverlay = document.getElementById("tutorial-overlay"); + const stepNumberElem = document.getElementById("step-number"); + const stepList = document.getElementById("step-list"); + const prevBtn = document.getElementById("tutorial-prev"); + const nextBtn = document.getElementById("tutorial-next"); + const skipBtn = document.getElementById("tutorial-skip"); + + const steps = [ + ["Use the sliders to set battery voltage \(V_0\), resistor \(R\), and capacitor \(C\)."], + ["Click “Start” to begin charging the capacitor through \(R\). Watch \(V_C(t)\) rise."], + ["Observe how \(I(t)\) decreases as the capacitor charges."], + ["After \(5\ tau\), answer the quiz questions."] + ]; + + let currentStep = 0; + function showStep(i) { + stepNumberElem.textContent = i + 1; + stepList.innerHTML = ""; + steps[i].forEach((text, idx) => { + const li = document.createElement("li"); + li.textContent = text; + li.className = "opacity-0 transition-opacity duration-500"; + stepList.appendChild(li); + setTimeout(() => { + li.classList.remove("opacity-0"); + li.classList.add("opacity-100"); + }, idx * 200); + }); + prevBtn.disabled = i === 0; + nextBtn.textContent = i === steps.length - 1 ? "Begin Experiment" : "Next"; + } + + showStep(currentStep); + prevBtn.addEventListener("click", () => { + if (currentStep > 0) { + currentStep--; + showStep(currentStep); + } + }); + nextBtn.addEventListener("click", () => { + if (currentStep < steps.length - 1) { + currentStep++; + showStep(currentStep); + } else { + tutorialOverlay.style.display = "none"; + enableControls(); + } + }); + skipBtn.addEventListener("click", () => { + tutorialOverlay.style.display = "none"; + enableControls(); + }); + // ==== End Tutorial Overlay Logic ==== + + // ==== 2. DOM References & State ==== + const canvas = document.getElementById("circuit-canvas"); + const ctx = canvas.getContext("2d"); + + const VSlider = document.getElementById("V-slider"); + const VValue = document.getElementById("V-value"); + const RSlider = document.getElementById("R-slider"); + const RValue = document.getElementById("R-value"); + const CSlider = document.getElementById("C-slider"); + const CValue = document.getElementById("C-value"); + + const startBtn = document.getElementById("start-circuit"); + const stopBtn = document.getElementById("stop-circuit"); + const resetBtn = document.getElementById("reset-circuit"); + + const quizDiv = document.getElementById("postlab-quiz"); + + const readoutT = document.getElementById("readout-t"); + const readoutVc = document.getElementById("readout-vc"); + const readoutI = document.getElementById("readout-i"); + const readoutTau = document.getElementById("readout-tau"); + + const vcCtx = document.getElementById("vc-chart").getContext("2d"); + const iCtx = document.getElementById("i-chart").getContext("2d"); + + // Physical parameters (will update on slider changes) + let V0 = parseFloat(VSlider.value); // battery voltage in volts + let R = parseFloat(RSlider.value); // resistance in ohms + let C = parseFloat(CSlider.value) * 1e-6; // convert µF → F + + let tau = R * C; // time constant (s) + + // Simulation state + let t0 = null; + let animId = null; + let running = false; + let maxTime = 5 * tau; // simulate up to 5τ for quiz reveal + + // Chart.js setups + const vcData = { + labels: [], + datasets: [{ + label: "Vc(t) (V)", + data: [], + borderColor: "#1E40AF", + borderWidth: 2, + fill: false, + pointRadius: 0 + }] + }; + const vcChart = new Chart(vcCtx, { + type: "line", + data: vcData, + options: { + animation: false, + scales: { + x: { title: { display: true, text: "Time (s)" } }, + y: { title: { display: true, text: "Vc (V)" }, suggestedMax: V0 } + }, + plugins: { legend: { display: false } } + } + }); + + const iData = { + labels: [], + datasets: [{ + label: "I(t) (A)", + data: [], + borderColor: "#DC2626", + borderWidth: 2, + fill: false, + pointRadius: 0 + }] + }; + const iChart = new Chart(iCtx, { + type: "line", + data: iData, + options: { + animation: false, + scales: { + x: { title: { display: true, text: "Time (s)" } }, + y: { title: { display: true, text: "I (A)" } } + }, + plugins: { legend: { display: false } } + } + }); + + // Disable controls until tutorial ends + startBtn.disabled = true; + stopBtn.disabled = true; + resetBtn.disabled = true; + VSlider.disabled = true; + RSlider.disabled = true; + CSlider.disabled = true; + + // ==== 3. Enable Controls & Initial Draw ==== + function enableControls() { + startBtn.disabled = false; + resetBtn.disabled = false; + VSlider.disabled = false; + RSlider.disabled = false; + CSlider.disabled = false; + tau = R * C; + readoutTau.textContent = tau.toFixed(3); + drawCircuit(0); // initial draw at t=0 + } + + // Draw the schematic of battery→resistor→capacitor and a current arrow + function drawCircuit(t) { + ctx.clearRect(0, 0, canvas.width, canvas.height); + + // Coordinates for schematic + const leftX = 50; + const midX = 250; + const rightX = 450; + const centerY = canvas.height / 2; + + // 1) Draw battery as two plates + ctx.fillStyle = "#333"; + ctx.fillRect(leftX - 10, centerY - 40, 10, 80); // negative plate + ctx.fillRect(leftX + 10, centerY - 20, 5, 40); // positive plate + ctx.fillStyle = "#000"; + ctx.font = "14px sans-serif"; + ctx.fillText("Battery", leftX - 20, centerY - 50); + ctx.fillText(`V₀ = ${V0.toFixed(1)}V`, leftX - 30, centerY + 60); + + // 2) Draw resistor as zig-zag between leftX+20 and midX + drawResistor(leftX + 20, centerY, midX, centerY); + ctx.fillStyle = "#000"; + ctx.fillText(`R = ${R.toFixed(0)}Ω`, (leftX + 20 + midX) / 2 - 20, centerY - 20); + + // 3) Draw capacitor between midX+20 and midX+20 horizontally (two parallel plates) + ctx.strokeStyle = "#333"; + ctx.lineWidth = 4; + ctx.beginPath(); + ctx.moveTo(midX + 20, centerY - 30); + ctx.lineTo(midX + 20, centerY + 30); + ctx.stroke(); + ctx.beginPath(); + ctx.moveTo(midX + 45, centerY - 30); + ctx.lineTo(midX + 45, centerY + 30); + ctx.stroke(); + ctx.fillStyle = "#000"; + ctx.fillText(`C = ${(C * 1e6).toFixed(0)}µF`, midX + 5, centerY + 60); + + // 4) Draw wires connecting ends + ctx.strokeStyle = "#555"; + ctx.lineWidth = 2; + ctx.beginPath(); + // Top wire: battery positive → resistor start + ctx.moveTo(leftX + 10, centerY - 20); + ctx.lineTo(leftX + 20, centerY - 20); + // Continue through resistor zigzag (already drawn), then to capacitor start + ctx.lineTo(midX, centerY - 20); + ctx.lineTo(midX + 20, centerY - 20); + // From capacitor top plate back to battery negative via right wire + ctx.lineTo(midX + 45, centerY - 20); + ctx.lineTo(rightX, centerY - 20); + ctx.lineTo(rightX, centerY + 60); + // Bottom wire: capacitor bottom plate back to battery negative + ctx.lineTo(midX + 45, centerY + 60); + ctx.lineTo(midX + 20, centerY + 60); + ctx.lineTo(midX, centerY + 60); + ctx.lineTo(leftX + 20, centerY + 60); + ctx.lineTo(leftX + 10, centerY + 60); + ctx.stroke(); + + // 5) Compute Vc(t) and I(t) + const VC = V0 * (1 - Math.exp(-t / tau)); + const I = (V0 - VC) / R; + + // 6) Draw current arrow on top wire (direction: left→right). Length proportional to I. + const arrowLength = Math.min(I * 1000, 100); // scale for visibility + if (running) { + ctx.strokeStyle = "#DC2626"; + ctx.fillStyle = "#DC2626"; + ctx.lineWidth = 2; + // arrow shaft + ctx.beginPath(); + ctx.moveTo(leftX + 20, centerY - 20); + ctx.lineTo(leftX + 20 + arrowLength, centerY - 20); + ctx.stroke(); + // arrowhead + const tipX = leftX + 20 + arrowLength; + const tipY = centerY - 20; + ctx.beginPath(); + ctx.moveTo(tipX, tipY); + ctx.lineTo(tipX - 8, tipY - 5); + ctx.lineTo(tipX - 8, tipY + 5); + ctx.closePath(); + ctx.fill(); + } + + // 7) Update numeric readouts + readoutT.textContent = t.toFixed(2); + readoutVc.textContent = VC.toFixed(2); + readoutI.textContent = I.toFixed(3); + readoutTau.textContent = tau.toFixed(3); + } + + // Draw a zig-zag resistor between (x1,y) and (x2,y) + function drawResistor(x1, y, x2, y2) { + const totalLength = x2 - x1; + const peaks = 6; + const segment = totalLength / (peaks * 2); + ctx.strokeStyle = "#555"; + ctx.lineWidth = 4; + ctx.beginPath(); + ctx.moveTo(x1, y); + for (let i = 0; i < peaks * 2; i++) { + const dx = x1 + segment * (i + 1); + const dy = y + (i % 2 === 0 ? -10 : 10); + ctx.lineTo(dx, dy); + } + ctx.lineTo(x2, y); + ctx.stroke(); + } + + // ==== 4. Slider Handlers ==== + VSlider.addEventListener("input", () => { + V0 = parseFloat(VSlider.value); + VValue.textContent = V0.toFixed(1); + // Update chart Y‐axis max + vcChart.options.scales.y.suggestedMax = V0; + vcChart.update("none"); + if (!running) { + drawCircuit(0); + } + }); + + RSlider.addEventListener("input", () => { + R = parseFloat(RSlider.value); + RValue.textContent = R.toFixed(0); + tau = R * C; + readoutTau.textContent = tau.toFixed(3); + if (!running) { + drawCircuit(0); + } + }); + + CSlider.addEventListener("input", () => { + C = parseFloat(CSlider.value) * 1e-6; + CValue.textContent = (C * 1e6).toFixed(0); + tau = R * C; + readoutTau.textContent = tau.toFixed(3); + if (!running) { + drawCircuit(0); + } + }); + + // ==== 5. Animation Loop & Launch ==== + function step(timestamp) { + if (!t0) t0 = timestamp; + const elapsed = (timestamp - t0) / 1000; // seconds + if (elapsed >= maxTime) { + drawCircuit(maxTime); + revealQuiz(); + return; + } + drawCircuit(elapsed); + + // Update graphs + // Vc(t) + const VC = V0 * (1 - Math.exp(-elapsed / tau)); + vcChart.data.labels.push(elapsed.toFixed(2)); + vcChart.data.datasets[0].data.push(VC.toFixed(2)); + vcChart.update("none"); + + // I(t) + const I = (V0 - VC) / R; + iChart.data.labels.push(elapsed.toFixed(2)); + iChart.data.datasets[0].data.push(I.toFixed(3)); + iChart.update("none"); + + animId = requestAnimationFrame(step); + } + + startBtn.addEventListener("click", () => { + // Disable controls + VSlider.disabled = true; + RSlider.disabled = true; + CSlider.disabled = true; + startBtn.disabled = true; + stopBtn.disabled = false; + resetBtn.disabled = true; + + tau = R * C; + maxTime = 5 * tau; + t0 = null; + + // Clear graphs + vcChart.data.labels = []; + vcChart.data.datasets[0].data = []; + vcChart.update("none"); + iChart.data.labels = []; + iChart.data.datasets[0].data = []; + iChart.update("none"); + + running = true; + animId = requestAnimationFrame(step); + }); + + stopBtn.addEventListener("click", () => { + if (animId) cancelAnimationFrame(animId); + running = false; + stopBtn.disabled = true; + startBtn.disabled = false; + resetBtn.disabled = false; + }); + + resetBtn.addEventListener("click", () => { + if (animId) cancelAnimationFrame(animId); + running = false; + t0 = null; + // Re-enable controls + VSlider.disabled = false; + RSlider.disabled = false; + CSlider.disabled = false; + startBtn.disabled = false; + stopBtn.disabled = true; + resetBtn.disabled = false; + quizDiv.classList.add("hidden"); + + // Clear graphs + vcChart.data.labels = []; + vcChart.data.datasets[0].data = []; + vcChart.update("none"); + iChart.data.labels = []; + iChart.data.datasets[0].data = []; + iChart.update("none"); + + drawCircuit(0); + }); + + // ==== 6. Quiz Reveal ==== + function revealQuiz() { + stopBtn.disabled = true; + resetBtn.disabled = false; + quizDiv.classList.remove("hidden"); + } + + // ==== 7. Initial Draw ==== + tau = R * C; + readoutTau.textContent = tau.toFixed(3); + drawCircuit(0); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/physics_inclined.js b/web/virtual_lab/static/virtual_lab/js/physics_inclined.js new file mode 100644 index 0000000..576a8dc --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/physics_inclined.js @@ -0,0 +1,497 @@ +// web/virtual_lab/static/virtual_lab/js/physics_inclined.js + +document.addEventListener("DOMContentLoaded", () => { + // ==== 1. Tutorial Overlay Logic ==== + const tutorialOverlay = document.getElementById("tutorial-overlay"); + const stepNumberElem = document.getElementById("step-number"); + const stepList = document.getElementById("step-list"); + const prevBtn = document.getElementById("tutorial-prev"); + const nextBtn = document.getElementById("tutorial-next"); + const skipBtn = document.getElementById("tutorial-skip"); + + const steps = [ + ["Drag the block along the ramp to set its starting position."], + ["Adjust angle, friction, and mass to see how physics changes."], + ["Click “Launch” and watch live readouts, force vectors, and energy bars."], + ["Observe the real-time Position vs Time graph and answer the quiz!"] + ]; + + let currentStep = 0; + function showStep(i) { + stepNumberElem.textContent = i + 1; + stepList.innerHTML = ""; + steps[i].forEach((text, idx) => { + const li = document.createElement("li"); + li.textContent = text; + li.className = "opacity-0 transition-opacity duration-500"; + stepList.appendChild(li); + setTimeout(() => { + li.classList.remove("opacity-0"); + li.classList.add("opacity-100"); + }, idx * 200); + }); + prevBtn.disabled = i === 0; + nextBtn.textContent = i === steps.length - 1 ? "Begin Experiment" : "Next"; + } + + showStep(currentStep); + prevBtn.addEventListener("click", () => { + if (currentStep > 0) { + currentStep--; + showStep(currentStep); + } + }); + nextBtn.addEventListener("click", () => { + if (currentStep < steps.length - 1) { + currentStep++; + showStep(currentStep); + } else { + tutorialOverlay.style.display = "none"; + enableControls(); + } + }); + skipBtn.addEventListener("click", () => { + tutorialOverlay.style.display = "none"; + enableControls(); + }); + // ==== End Tutorial Overlay Logic ==== + + + // ==== 2. DOM References & State ==== + const canvas = document.getElementById("inclined-canvas"); + const ctx = canvas.getContext("2d"); + if(!ctx) + { + console.error("Failed to get 2D context for canvas"); + return; + } + + const angleSlider = document.getElementById("angle-slider"); + const angleValue = document.getElementById("angle-value"); + const frictionSlider = document.getElementById("friction-slider"); + const frictionValue = document.getElementById("friction-value"); + const massSlider = document.getElementById("mass-slider"); + const massValue = document.getElementById("mass-value"); + + const startBtn = document.getElementById("start-inclined"); + const stopBtn = document.getElementById("stop-inclined"); + const resetBtn = document.getElementById("reset-inclined"); + + const quizDiv = document.getElementById("postlab-quiz"); + + const readoutS = document.getElementById("readout-s"); + const readoutV = document.getElementById("readout-v"); + const readoutA = document.getElementById("readout-a"); + const readoutPE = document.getElementById("readout-pe"); + const readoutKE = document.getElementById("readout-ke"); + + const barPE = document.getElementById("bar-pe"); + const barKE = document.getElementById("bar-ke"); + + const positionCtx = document.getElementById("position-chart").getContext("2d"); + + // Physical constants & scaling + const G = 9.81; // m/s² + const pxToM = 0.01; // 1 px = 0.01 m + const mToPx = 1 / pxToM; // inverse + const rampPx = 300; // 300 px → 3 m + const rampLen = rampPx * pxToM; // 3 m + + // Canvas dimensions & ramp origin + const W = canvas.width; // 600 px + const H = canvas.height; // 400 px + const originX = 50; // left margin + const originY = H - 50; // bottom margin + + // Experiment state + let alphaDeg = Number.parseFloat(angleSlider.value); // initial angle + let alphaRad = (alphaDeg * Math.PI) / 180; + + let mu = Number.parseFloat(frictionSlider.value); // friction coefficient + let mass = Number.parseFloat(massSlider.value); // mass in kg + + let aAcc = G * Math.sin(alphaRad) // net accel down-ramp + - mu * G * Math.cos(alphaRad); + + // Block state + let s = 0; // distance along plane (m) from top + let v = 0; // speed (m/s) + let t0 = null; // timestamp at launch + let animId = null; // requestAnimationFrame id + let running = false; // true while animating + + // Ramp geometry (recompute whenever angle changes) + let basePx, heightPx; + function updateRampGeometry() { + basePx = rampPx * Math.cos(alphaRad); + heightPx = rampPx * Math.sin(alphaRad); + } + updateRampGeometry(); + + // Chart.js: Position vs Time + const posData = { + labels: [], + datasets: [{ + label: "Position (m)", + data: [], + borderColor: "#1E40AF", + borderWidth: 2, + fill: false, + pointRadius: 0 + }] + }; + const posChart = new Chart(positionCtx, { + type: "line", + data: posData, + options: { + animation: false, + scales: { + x: { title: { display: true, text: "Time (s)" } }, + y: { title: { display: true, text: "s (m)" } } + }, + plugins: { legend: { display: false } } + } + }); + + // Disable controls until tutorial ends + startBtn.disabled = true; + stopBtn.disabled = true; + resetBtn.disabled = true; + angleSlider.disabled = true; + frictionSlider.disabled = true; + massSlider.disabled = true; + + + // ==== 3. Enable Controls & Initial Draw ==== + function enableControls() { + startBtn.disabled = false; + resetBtn.disabled = false; + angleSlider.disabled = false; + frictionSlider.disabled = false; + massSlider.disabled = false; + drawScene(); + } + + // Draw wedge, block, forces, and update UI + function drawScene() { + ctx.clearRect(0, 0, W, H); + + // --- 3a) Draw ramp as a 3D‐style wedge with gradient --- + const grad = ctx.createLinearGradient( + originX, originY - heightPx, + originX + basePx, originY + ); + grad.addColorStop(0, "#F3F4F6"); + grad.addColorStop(1, "#E5E7EB"); + + ctx.fillStyle = grad; + ctx.beginPath(); + ctx.moveTo(originX, originY); + ctx.lineTo(originX + basePx, originY); + ctx.lineTo(originX, originY - heightPx); + ctx.closePath(); + ctx.fill(); + + // Outline the triangle + ctx.strokeStyle = "#4B5563"; + ctx.lineWidth = 2; + ctx.beginPath(); + ctx.moveTo(originX, originY); + ctx.lineTo(originX + basePx, originY); + ctx.lineTo(originX, originY - heightPx); + ctx.closePath(); + ctx.stroke(); + + // --- 3b) Compute block’s pixel position on ramp --- + const topX = originX; + const topY = originY - heightPx; + const d_px = (s / rampLen) * rampPx; // px from top down the plane + const blockX = topX + d_px * Math.cos(alphaRad); + const blockY = topY + d_px * Math.sin(alphaRad); + + // Draw block as rotated square (12×12 px) + const blkSize = 12; + ctx.save(); + ctx.translate(blockX, blockY); + ctx.rotate(-alphaRad); + ctx.fillStyle = "#DC2626"; + ctx.fillRect(-blkSize / 2, -blkSize / 2, blkSize, blkSize); + ctx.strokeStyle = "#991B1B"; + ctx.lineWidth = 1; + ctx.strokeRect(-blkSize / 2, -blkSize / 2, blkSize, blkSize); + ctx.restore(); + + // --- 3c) Draw force vectors at block center --- + drawForceVectors(blockX, blockY); + + // --- 3d) Update numeric readouts --- + readoutS.textContent = s.toFixed(2); + readoutV.textContent = v.toFixed(2); + readoutA.textContent = aAcc.toFixed(2); + + const heightM = (rampLen - s) * Math.sin(alphaRad); + const PE = mass * G * heightM; + const KE = 0.5 * mass * v * v; + readoutPE.textContent = PE.toFixed(2); + readoutKE.textContent = KE.toFixed(2); + + // --- 3e) Update energy bars --- + const maxPE = mass * G * (rampLen * Math.sin(alphaRad)); + const peFrac = maxPE > 0 ? Math.min(PE / maxPE, 1) : 0; + const keFrac = maxPE > 0 ? Math.min(KE / maxPE, 1) : 0; + barPE.style.height = `${peFrac * 100}%`; + barKE.style.height = `${keFrac * 100}%`; + } + + // Draw mg sinα (red), mg cosα (blue), friction (yellow) at block pos + function drawForceVectors(cx, cy) { + ctx.save(); + ctx.translate(cx, cy); + + // 1) mg sin α (red) + const redLen = 30; // px + ctx.strokeStyle = "#DC2626"; + ctx.lineWidth = 2; + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(redLen * Math.cos(alphaRad), redLen * Math.sin(alphaRad)); + ctx.stroke(); + drawArrowhead(redLen * Math.cos(alphaRad), redLen * Math.sin(alphaRad), alphaRad); + + // 2) mg cos α (blue) → perpendicular + const blueLen = 20; + const perpAngle = alphaRad - Math.PI / 2; + ctx.strokeStyle = "#3B82F6"; + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(blueLen * Math.cos(perpAngle), blueLen * Math.sin(perpAngle)); + ctx.stroke(); + drawArrowhead(blueLen * Math.cos(perpAngle), blueLen * Math.sin(perpAngle), perpAngle); + + // 3) friction (yellow) uphill (opposite motion) if μ>0 + if (mu > 0) { + const yellowLen = 25; + const fricAngle = alphaRad + Math.PI; // uphill + ctx.strokeStyle = "#FBBF24"; + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(yellowLen * Math.cos(fricAngle), yellowLen * Math.sin(fricAngle)); + ctx.stroke(); + drawArrowhead(yellowLen * Math.cos(fricAngle), yellowLen * Math.sin(fricAngle), fricAngle); + } + + ctx.restore(); + } + + // Draw an arrowhead at (x,y), pointing angle θ + function drawArrowhead(x, y, θ) { + const size = 6; + ctx.save(); + ctx.translate(x, y); + ctx.rotate(θ); + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(-size, size / 2); + ctx.lineTo(-size, -size / 2); + ctx.closePath(); + ctx.fillStyle = ctx.strokeStyle; + ctx.fill(); + ctx.restore(); + } + + + // ==== 4. Slider Change Handlers ==== + angleSlider.addEventListener("input", () => { + alphaDeg = Number.parseFloat(angleSlider.value); + alphaRad = (alphaDeg * Math.PI) / 180; + angleValue.textContent = `${alphaDeg}°`; + updateDynamics(); + updateRampGeometry(); + if (!running) { + s = 0; + drawScene(); + } + }); + + frictionSlider.addEventListener("input", () => { + mu = Number.parseFloat(frictionSlider.value); + frictionValue.textContent = mu.toFixed(2); + updateDynamics(); + if (!running) drawScene(); + }); + + massSlider.addEventListener("input", () => { + mass = Number.parseFloat(massSlider.value); + massValue.textContent = `${mass.toFixed(1)} kg`; + if (!running) drawScene(); + }); + + function updateDynamics() { + aAcc = G * Math.sin(alphaRad) - mu * G * Math.cos(alphaRad); + } + + + // ==== Helper: Map MouseEvent → Canvas Coordinates ==== + function getMousePos(evt) { + const rect = canvas.getBoundingClientRect(); + // How many canvas pixels correspond to one CSS px? + const scaleX = canvas.width / rect.width; + const scaleY = canvas.height / rect.height; + + return { + x: (evt.clientX - rect.left) * scaleX, + y: (evt.clientY - rect.top) * scaleY + }; + } + + + // ==== 5. Drag-to-Place Logic (with scaling) ==== + let isDragging = false; + + canvas.addEventListener("mousedown", (e) => { + const mouse = getMousePos(e); + + // Block’s pixel position (in internal 600×400 coordinate): + const topX = originX; + const topY = originY - heightPx; + const d_px = (s / rampLen) * rampPx; + const bx = topX + d_px * Math.cos(alphaRad); + const by = topY + d_px * Math.sin(alphaRad); + + // If click is within ~10 px (in canvas coords) of the block, start dragging: + if (Math.hypot(mouse.x - bx, mouse.y - by) < 10) { + isDragging = true; + stopAnimation(); + } + }); + + canvas.addEventListener("mousemove", (e) => { + if (!isDragging) return; + const mouse = getMousePos(e); + + // Project onto the ramp line to find new s: + const topX = originX; + const topY = originY - heightPx; + const dx = mouse.x - topX; + const dy = mouse.y - topY; + // t* = ( (mx-topX)cosα + (my-topY)sinα ), in px along ramp + const tStar = dx * Math.cos(alphaRad) + dy * Math.sin(alphaRad); + const tClamped = Math.min(Math.max(tStar, 0), rampPx); + + s = (tClamped / rampPx) * rampLen; // convert px→m + drawScene(); + }); + + canvas.addEventListener("mouseup", () => { + if (isDragging) isDragging = false; + }); + + + // ==== 6. Animation Loop & Launch (with scaled coords) ==== + let s0 = 0; + + function step(timestamp) { + if (!t0) { + t0 = timestamp; + v = 0; + } + const t = (timestamp - t0) / 1000; // seconds + const sNew = s0 + 0.5 * aAcc * t * t; + + // If net acceleration ≤ 0, it will not move + if (aAcc <= 0) { + cancelAnimationFrame(animId); + running = false; + stopBtn.disabled = true; + startBtn.disabled = false; + resetBtn.disabled = false; + return; + } + + if (sNew >= rampLen) { + s = rampLen; + v = aAcc * t; + drawScene(); + revealQuiz(); + return; + } + + s = sNew; + v = aAcc * t; + drawScene(); + + // Update Position vs Time chart + posChart.data.labels.push(t.toFixed(2)); + posChart.data.datasets[0].data.push(s.toFixed(2)); + posChart.update("none"); + + animId = requestAnimationFrame(step); + } + + startBtn.addEventListener("click", () => { + angleSlider.disabled = true; + frictionSlider.disabled = true; + massSlider.disabled = true; + startBtn.disabled = true; + stopBtn.disabled = false; + resetBtn.disabled = true; + + s0 = s; + v = 0; + t0 = null; + running = true; + + // Clear chart + posChart.data.labels = []; + posChart.data.datasets[0].data = []; + posChart.update("none"); + + animId = requestAnimationFrame(step); + }); + + function stopAnimation() { + if (animId) { + cancelAnimationFrame(animId); + running = false; + stopBtn.disabled = true; + startBtn.disabled = false; + resetBtn.disabled = false; + } + } + + stopBtn.addEventListener("click", stopAnimation); + + resetBtn.addEventListener("click", () => { + if (animId) cancelAnimationFrame(animId); + running = false; + s = 0; + v = 0; + t0 = null; + angleSlider.disabled = false; + frictionSlider.disabled = false; + massSlider.disabled = false; + startBtn.disabled = false; + stopBtn.disabled = true; + resetBtn.disabled = false; + quizDiv.classList.add("hidden"); + + // Clear chart + posChart.data.labels = []; + posChart.data.datasets[0].data = []; + posChart.update("none"); + + drawScene(); + }); + + + // ==== 7. Quiz Reveal ==== + function revealQuiz() { + stopBtn.disabled = true; + resetBtn.disabled = false; + quizDiv.classList.remove("hidden"); + } + + + // ==== 8. Initial Draw ==== + drawScene(); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/physics_mass_spring.js b/web/virtual_lab/static/virtual_lab/js/physics_mass_spring.js new file mode 100644 index 0000000..e04f881 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/physics_mass_spring.js @@ -0,0 +1,363 @@ +// web/virtual_lab/static/virtual_lab/js/physics_mass_spring.js + +document.addEventListener("DOMContentLoaded", () => { + // ==== 1. Tutorial Overlay Logic ==== + const tutorialOverlay = document.getElementById("tutorial-overlay"); + const stepNumberElem = document.getElementById("step-number"); + const stepList = document.getElementById("step-list"); + const prevBtn = document.getElementById("tutorial-prev"); + const nextBtn = document.getElementById("tutorial-next"); + const skipBtn = document.getElementById("tutorial-skip"); + + const steps = [ + ["Drag the mass horizontally to set its initial displacement \(A\)."], + ["Adjust the spring constant \(k\) and mass \(m\)."], + ["Click “Start” to watch \(x(t) = A \cos(\omega t)\) with \(\omega = \sqrt{k/m}\)."], + ["Observe the Position vs. Time graph and answer the quiz!"] + ]; + + let currentStep = 0; + function showStep(i) { + stepNumberElem.textContent = i + 1; + stepList.innerHTML = ""; + steps[i].forEach((text, idx) => { + const li = document.createElement("li"); + li.textContent = text; + li.className = "opacity-0 transition-opacity duration-500"; + stepList.appendChild(li); + setTimeout(() => { + li.classList.remove("opacity-0"); + li.classList.add("opacity-100"); + }, idx * 200); + }); + prevBtn.disabled = i === 0; + nextBtn.textContent = i === steps.length - 1 ? "Begin Experiment" : "Next"; + } + + showStep(currentStep); + prevBtn.addEventListener("click", () => { + if (currentStep > 0) { + currentStep--; + showStep(currentStep); + } + }); + nextBtn.addEventListener("click", () => { + if (currentStep < steps.length - 1) { + currentStep++; + showStep(currentStep); + } else { + tutorialOverlay.style.display = "none"; + enableControls(); + } + }); + skipBtn.addEventListener("click", () => { + tutorialOverlay.style.display = "none"; + enableControls(); + }); + // ==== End Tutorial Overlay Logic ==== + + + // ==== 2. DOM References & State ==== + const canvas = document.getElementById("mass-spring-canvas"); + const ctx = canvas.getContext("2d"); + + const kSlider = document.getElementById("k-slider"); + const kValue = document.getElementById("k-value"); + const mSlider = document.getElementById("m-slider"); + const mValue = document.getElementById("m-value"); + const ASlider = document.getElementById("A-slider"); + const AValue = document.getElementById("A-value"); + + const startBtn = document.getElementById("start-mass-spring"); + const stopBtn = document.getElementById("stop-mass-spring"); + const resetBtn = document.getElementById("reset-mass-spring"); + + const quizDiv = document.getElementById("postlab-quiz"); + + const readoutT = document.getElementById("readout-t"); + const readoutX = document.getElementById("readout-x"); + const readoutV = document.getElementById("readout-v"); + const readoutA = document.getElementById("readout-a"); + const readoutPE = document.getElementById("readout-pe"); + const readoutKE = document.getElementById("readout-ke"); + + const barPE = document.getElementById("bar-pe"); + const barKE = document.getElementById("bar-ke"); + + const positionCtx = document.getElementById("position-chart").getContext("2d"); + + // Physical constants & scaling + const pxToM = 0.01; // 1 px = 0.01 m + const mToPx = 1 / pxToM; // invert + const equilibriumX = canvas.width / 2; // center pixel is equilibrium (x=0) + + // DOM Element–related state + let k = Number.parseFloat(kSlider.value); // N/m + let m = Number.parseFloat(mSlider.value); // kg + let A = Number.parseFloat(ASlider.value); // m + let omega = Math.sqrt(k / m); // rad/s + + // Simulation state + let t0 = null; // timestamp at “Start” + let animId = null; // requestAnimationFrame ID + let running = false; // true while animating + + // Derived state for this run + let maxT = (2 * Math.PI) / omega; // one full period + + // Chart.js: Position vs Time + const posData = { + labels: [], + datasets: [{ + label: "x(t) (m)", + data: [], + borderColor: "#1E40AF", + borderWidth: 2, + fill: false, + pointRadius: 0 + }] + }; + const posChart = new Chart(positionCtx, { + type: "line", + data: posData, + options: { + animation: false, + scales: { + x: { title: { display: true, text: "Time (s)" } }, + y: { title: { display: true, text: "x (m)" } } + }, + plugins: { legend: { display: false } } + } + }); + + // Disable controls until tutorial ends + startBtn.disabled = true; + stopBtn.disabled = true; + resetBtn.disabled = true; + kSlider.disabled = true; + mSlider.disabled = true; + ASlider.disabled = true; + + + // ==== 3. Enable Controls & Initial Draw ==== + function enableControls() { + startBtn.disabled = false; + resetBtn.disabled = false; + kSlider.disabled = false; + mSlider.disabled = false; + ASlider.disabled = false; + drawScene(0); // draw mass at initial x = +A + } + + // Draw mass‐spring system at time t (in seconds) + function drawScene(t) { + ctx.clearRect(0, 0, canvas.width, canvas.height); + + // 3a) Parameters at current run + const kVal = k; + const mVal = m; + const omegaVal = Math.sqrt(kVal / mVal); + + // 3b) Position x(t) in meters: x = A cos(omega t) + const x_m = A * Math.cos(omegaVal * t); + const v_m = -A * omegaVal * Math.sin(omegaVal * t); + const a_m = -A * omegaVal * omegaVal * Math.cos(omegaVal * t); + + // 3c) Convert x_m to pixel: 0 m → equilibriumX px, positive → right + const x_px = equilibriumX + x_m * mToPx; + const massY = canvas.height / 2; // vertical position for the block + const massSize = 20; // 20×20 px block + + // Draw horizontal line (spring baseline) + ctx.strokeStyle = "#4B5563"; + ctx.lineWidth = 2; + ctx.beginPath(); + ctx.moveTo(0, massY); + ctx.lineTo(canvas.width, massY); + ctx.stroke(); + + // Draw spring “coils” from left wall (10 px) to mass position + drawSpring(10, massY, x_px - massSize / 2, massY); + + // Draw mass as a square + ctx.fillStyle = "#DC2626"; + ctx.fillRect(x_px - massSize / 2, massY - massSize / 2, massSize, massSize); + ctx.strokeStyle = "#991B1B"; + ctx.strokeRect(x_px - massSize / 2, massY - massSize / 2, massSize, massSize); + + // 3d) Update numeric readouts + readoutT.textContent = t.toFixed(2); + readoutX.textContent = x_m.toFixed(2); + readoutV.textContent = v_m.toFixed(2); + readoutA.textContent = a_m.toFixed(2); + + const PE = 0.5 * kVal * x_m * x_m; // ½ k x² + const KE = 0.5 * mVal * v_m * v_m; // ½ m v² + readoutPE.textContent = PE.toFixed(2); + readoutKE.textContent = KE.toFixed(2); + + // 3f) Update energy bars + // Max total energy = ½ k A² + const Emax = 0.5 * kVal * A * A; + const peFrac = Emax > 0 ? Math.min(PE / Emax, 1) : 0; + const keFrac = Emax > 0 ? Math.min(KE / Emax, 1) : 0; + barPE.style.height = `${peFrac * 100}%`; + barKE.style.height = `${keFrac * 100}%`; + } + + // Draw a coiled spring from (x1,y1) to (x2,y2) + function drawSpring(x1, y1, x2, y2) { + const totalLength = x2 - x1; + const coilCount = 12; // number of loops + const coilSpacing = totalLength / (coilCount + 1); + const amplitude = 10; // amplitude of the sine wave (px) + + ctx.strokeStyle = "#4A5568"; + ctx.lineWidth = 2; + ctx.beginPath(); + + // Start at x1,y1 + ctx.moveTo(x1, y1); + + // For each coil, draw a half sine wave segment + for (let i = 1; i <= coilCount; i++) { + const cx = x1 + coilSpacing * i; + const phase = (i % 2 === 0) ? Math.PI : 0; // alternate phase for up/down + const px = cx; + const py = y1 + Math.sin(phase) * amplitude; + + // Instead of a straight line, approximate with a small sine curve + const steps = 10; // subdivide each coil into 10 segments + for (let j = 0; j <= steps; j++) { + const t = (j / steps); + const sx = x1 + coilSpacing * (i - 1) + t * coilSpacing; + const angle = ((i - 1 + t) * Math.PI); + const sy = y1 + Math.sin(angle) * amplitude * ((i - 1 + t) % 2 === 0 ? 1 : -1); + ctx.lineTo(sx, sy); + } + } + + // Finally connect to x2,y2 + ctx.lineTo(x2, y2); + ctx.stroke(); + } + + + // ==== 4. Slider Change Handlers ==== + kSlider.addEventListener("input", () => { + k = Number.parseFloat(kSlider.value); + kValue.textContent = k.toFixed(0); + omega = Math.sqrt(k / m); + maxT = (2 * Math.PI) / omega; + if (!running) { + drawScene(0); + } + }); + + mSlider.addEventListener("input", () => { + m = Number.parseFloat(mSlider.value); + mValue.textContent = `${m.toFixed(1)} kg`; + omega = Math.sqrt(k / m); + maxT = (2 * Math.PI) / omega; + if (!running) { + drawScene(0); + } + }); + + ASlider.addEventListener("input", () => { + A = Number.parseFloat(ASlider.value); + AValue.textContent = A.toFixed(2); + if (!running) { + drawScene(0); + } + }); + + + // ==== 5. Animation Loop & Launch ==== + function step(timestamp) { + if (!t0) { + t0 = timestamp; + } + let elapsed = (timestamp - t0) / 1000; // seconds since start + if (elapsed >= maxT) { + // One full oscillation complete → reveal quiz + drawScene(maxT); + revealQuiz(); + return; + } + drawScene(elapsed); + + // Update Position vs Time chart + posChart.data.labels.push(elapsed.toFixed(2)); + const x_m = A * Math.cos(omega * elapsed); + posChart.data.datasets[0].data.push(x_m.toFixed(2)); + posChart.update("none"); + + animId = requestAnimationFrame(step); + } + + startBtn.addEventListener("click", () => { + // Disable controls while animating + kSlider.disabled = true; + mSlider.disabled = true; + ASlider.disabled = true; + startBtn.disabled = true; + stopBtn.disabled = false; + resetBtn.disabled = true; + + // Prepare for launch + omega = Math.sqrt(k / m); + maxT = (2 * Math.PI) / omega; + t0 = null; + + // Clear chart + posChart.data.labels = []; + posChart.data.datasets[0].data = []; + posChart.update("none"); + + running = true; + animId = requestAnimationFrame(step); + }); + + stopBtn.addEventListener("click", () => { + if (animId) cancelAnimationFrame(animId); + running = false; + stopBtn.disabled = true; + startBtn.disabled = false; + resetBtn.disabled = false; + }); + + resetBtn.addEventListener("click", () => { + if (animId) cancelAnimationFrame(animId); + running = false; + t0 = null; + // Re-enable sliders + kSlider.disabled = false; + mSlider.disabled = false; + ASlider.disabled = false; + startBtn.disabled = false; + stopBtn.disabled = true; + resetBtn.disabled = false; + quizDiv.classList.add("hidden"); + + // Clear chart + posChart.data.labels = []; + posChart.data.datasets[0].data = []; + posChart.update("none"); + + // Redraw at t=0 + drawScene(0); + }); + + + // ==== 6. Quiz Reveal ==== + function revealQuiz() { + stopBtn.disabled = true; + resetBtn.disabled = false; + quizDiv.classList.remove("hidden"); + } + + + // ==== 7. Initial Draw ==== + drawScene(0); +}); diff --git a/web/virtual_lab/static/virtual_lab/js/physics_pendulum.js b/web/virtual_lab/static/virtual_lab/js/physics_pendulum.js new file mode 100644 index 0000000..48874e4 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/physics_pendulum.js @@ -0,0 +1,396 @@ +// web/virtual_lab/static/virtual_lab/js/physics_pendulum.js + +document.addEventListener("DOMContentLoaded", () => { + // -------- Tutorial Logic with Animated Steps -------- // + const tutorialOverlay = document.getElementById("tutorial-overlay"); + const stepNumberElem = document.getElementById("step-number"); + const stepList = document.getElementById("step-list"); + const prevBtn = document.getElementById("tutorial-prev"); + const nextBtn = document.getElementById("tutorial-next"); + const skipBtn = document.getElementById("tutorial-skip"); + + // Each step is an array of bullet‐point strings + const steps = [ + ["A pendulum consists of a mass (bob) attached to a string, swinging under gravity."], + [ + "The length (L) of the string determines how fast it swings.", + "Longer pendulum → slower oscillation; shorter → faster." + ], + [ + "The angular frequency ω = √(g / L), where g ≈ 9.81 m/s².", + "ω tells us how quickly the pendulum oscillates." + ], + [ + "The motion follows θ(t) = θ₀ · cos(ω t),", + "where θ₀ is the initial amplitude in radians." + ], + [ + "After one period T = 2π / ω, the pendulum returns to its start.", + "Click 'Next' to begin the experiment!" + ] + ]; + + let currentStep = 0; + + function showStep(index) { + stepNumberElem.textContent = index + 1; + stepList.innerHTML = ""; + steps[index].forEach((text, idx) => { + const li = document.createElement("li"); + li.textContent = text; + li.className = "opacity-0 transition-opacity duration-500"; + stepList.appendChild(li); + setTimeout(() => { + li.classList.remove("opacity-0"); + li.classList.add("opacity-100"); + }, idx * 200); + }); + prevBtn.disabled = index === 0; + nextBtn.textContent = index === steps.length - 1 ? "Begin Experiment" : "Next"; + } + + showStep(currentStep); + + prevBtn.addEventListener("click", () => { + if (currentStep > 0) { + currentStep--; + showStep(currentStep); + } + }); + + nextBtn.addEventListener("click", () => { + if (currentStep < steps.length - 1) { + currentStep++; + showStep(currentStep); + } else { + tutorialOverlay.classList.add("hidden"); + enableControls(); + } + }); + + skipBtn.addEventListener("click", () => { + tutorialOverlay.classList.add("hidden"); + enableControls(); + }); + // -------- End Animated Tutorial Logic -------- // + + // -------- Simulation, Chart, Energy, Trail & Readouts -------- // + const canvas = document.getElementById("pendulum-canvas"); + const ctx = canvas.getContext("2d"); + const lengthSlider = document.getElementById("length-slider"); + const lengthValue = document.getElementById("length-value"); + const startButton = document.getElementById("start-pendulum"); + const stopButton = document.getElementById("stop-pendulum"); + const postlabQuiz = document.getElementById("postlab-quiz"); + + // Energy bars + const peBar = document.getElementById("pe-bar"); + const keBar = document.getElementById("ke-bar"); + + // Numeric readouts + const timeReadout = document.getElementById("time-readout"); + const angleReadout = document.getElementById("angle-readout"); + const speedReadout = document.getElementById("speed-readout"); + + // Chart.js mini‐graph + const chartCanvas = document.getElementById("angle-chart").getContext("2d"); + + // Physical constants and state + const g = 9.81; // m/s² + const originX = canvas.width / 2; + const originY = 50; // pivot-point y-coordinate + const pixelsPerMeter = 100; // 1 m → 100 px + const bobRadius = 15; // px + + let L = Number.parseFloat(lengthSlider.value); // length in meters + let omega = Math.sqrt(g / L); // angular frequency + let theta0 = 0.3; // initial amplitude (rad) + let currentAngle = theta0; + let animationId = null; + let startTime = null; + + // For drag-and-release + let isDragging = false; + let dragAngle = 0; + + // Initialize Chart.js + const angleChart = new Chart(chartCanvas, { + type: "line", + data: { + labels: [], + datasets: [{ + label: "θ(t) (rad)", + data: [], + borderColor: "#FF6633", + borderWidth: 2, + fill: false, + pointRadius: 0, + }] + }, + options: { + animation: false, + scales: { + x: { title: { display: true, text: "Time (s)" } }, + y: { title: { display: true, text: "Angle (rad)" }, min: -theta0, max: theta0 } + }, + plugins: { legend: { display: false } } + } + }); + + // Draw pendulum with a "trail" effect + function drawPendulum(angle, length) { + ctx.fillStyle = "rgba(255, 255, 255, 0.1)"; + ctx.fillRect(0, 0, canvas.width, canvas.height); + + const r = length * pixelsPerMeter; + const bobX = originX + r * Math.sin(angle); + const bobY = originY + r * Math.cos(angle); + + // Draw rod + ctx.beginPath(); + ctx.moveTo(originX, originY); + ctx.lineTo(bobX, bobY); + ctx.strokeStyle = "#333"; + ctx.lineWidth = 2; + ctx.stroke(); + + // Draw bob + ctx.beginPath(); + ctx.arc(bobX, bobY, bobRadius, 0, 2 * Math.PI); + ctx.fillStyle = "#007BFF"; + ctx.fill(); + ctx.strokeStyle = "#0056b3"; + ctx.stroke(); + } + + // Convert mouse coords → angle from vertical + function computeAngleFromMouse(mouseX, mouseY, length) { + const dx = mouseX - originX; + const dy = mouseY - originY; + const r = length * pixelsPerMeter; + const dist = Math.hypot(dx, dy); + const scale = r / dist; + const px = dx * scale; + const py = dy * scale; + return Math.atan2(px, py); + } + + // Animation loop: updates everything each frame + function animatePendulum(timestamp) { + if (!startTime) startTime = timestamp; + const elapsedSec = (timestamp - startTime) / 1000; // ms → s + + // Angle: θ(t) = θ₀ cos(ω t) + const angle = theta0 * Math.cos(omega * elapsedSec); + currentAngle = angle; + + // 1) Draw pendulum with trail + drawPendulum(angle, L); + + // 2) Update mini-graph + if (angleChart.data.labels.length > 100) { + angleChart.data.labels.shift(); + angleChart.data.datasets[0].data.shift(); + } + angleChart.data.labels.push(elapsedSec.toFixed(2)); + angleChart.data.datasets[0].data.push(angle); + angleChart.update("none"); + + // 3) Compute energies (m = 1 kg) + const h = L * (1 - Math.cos(angle)); // height above bottom + const pe = g * h; // PE = m g h (m=1) + // Velocity: v = L * (dθ/dt) = L * (−θ₀ ω sin(ωt)) + const v = -L * theta0 * omega * Math.sin(omega * elapsedSec); + const ke = 0.5 * v * v; // KE = ½ m v² (m=1) + const E = pe + ke; + const pePct = E ? (pe / E) * 100 : 0; + const kePct = E ? (ke / E) * 100 : 0; + peBar.style.width = `${pePct.toFixed(1)}%`; + keBar.style.width = `${kePct.toFixed(1)}%`; + + // 4) Update numeric readouts + timeReadout.textContent = elapsedSec.toFixed(2); + angleReadout.textContent = (angle * (180 / Math.PI)).toFixed(1); + speedReadout.textContent = Math.abs(v).toFixed(2); + + // 5) Reveal quiz after one full period + const period = (2 * Math.PI) / omega; + if (elapsedSec >= period && postlabQuiz.classList.contains("hidden")) { + postlabQuiz.classList.remove("hidden"); + } + + animationId = requestAnimationFrame(animatePendulum); + } + + // Enable controls after tutorial ends + function enableControls() { + startButton.disabled = false; + stopButton.disabled = false; + lengthSlider.disabled = false; + currentAngle = theta0; + ctx.clearRect(0, 0, canvas.width, canvas.height); + drawPendulum(currentAngle, L); + } + + // Initially disable controls + startButton.disabled = true; + stopButton.disabled = true; + lengthSlider.disabled = true; + + // Update length L & ω on slider input + lengthSlider.addEventListener("input", () => { + L = Number.parseFloat(lengthSlider.value); + lengthValue.textContent = `${L.toFixed(1)} m`; + omega = Math.sqrt(g / L); + // Adjust chart y-axis + angleChart.options.scales.y.min = -theta0; + angleChart.options.scales.y.max = theta0; + angleChart.update("none"); + + if (!isDragging && !animationId) { + currentAngle = theta0; + ctx.clearRect(0, 0, canvas.width, canvas.height); + drawPendulum(currentAngle, L); + } + }); + + // Start button: reset chart, energy bars, trail + startButton.addEventListener("click", () => { + if (animationId) { + cancelAnimationFrame(animationId); + animationId = null; + postlabQuiz.classList.add("hidden"); + } + + // Clear canvas fully + ctx.clearRect(0, 0, canvas.width, canvas.height); + + // Reset chart + angleChart.data.labels = []; + angleChart.data.datasets[0].data = []; + angleChart.update("none"); + + // Reset energy bars + peBar.style.width = "0%"; + keBar.style.width = "0%"; + + // Reset numeric readouts + timeReadout.textContent = "0.00"; + angleReadout.textContent = (theta0 * (180 / Math.PI)).toFixed(1); + speedReadout.textContent = "0.00"; + + // Use currentAngle (maybe from drag) as θ₀ + theta0 = currentAngle; + angleChart.options.scales.y.min = -theta0; + angleChart.options.scales.y.max = theta0; + angleChart.update("none"); + + startTime = null; + animationId = requestAnimationFrame(animatePendulum); + }); + + // Stop button: cancel animation + stopButton.addEventListener("click", () => { + if (animationId) { + cancelAnimationFrame(animationId); + animationId = null; + } + ctx.clearRect(0, 0, canvas.width, canvas.height); + drawPendulum(currentAngle, L); + }); + + // -------- Drag & Release Logic (Mouse + Touch) -------- // + + // Helper function to get coordinates from mouse or touch event + function getEventCoords(e) { + const rect = canvas.getBoundingClientRect(); + if (e.type.startsWith('touch')) { + return { + x: e.touches[0].clientX - rect.left, + y: e.touches[0].clientY - rect.top + }; + } else { + return { + x: e.clientX - rect.left, + y: e.clientY - rect.top + }; + } + } + + // Helper function to start dragging + function startDrag(e) { + if (animationId) { + cancelAnimationFrame(animationId); + animationId = null; + } + + const coords = getEventCoords(e); + const r = L * pixelsPerMeter; + const bobX = originX + r * Math.sin(currentAngle); + const bobY = originY + r * Math.cos(currentAngle); + const distToBob = Math.hypot(coords.x - bobX, coords.y - bobY); + + if (distToBob <= bobRadius + 3) { + isDragging = true; + dragAngle = currentAngle; + e.preventDefault(); // Prevent default for touch events + } + } + + // Helper function to handle dragging + function handleDrag(e) { + if (!isDragging) return; + + const coords = getEventCoords(e); + dragAngle = computeAngleFromMouse(coords.x, coords.y, L); + currentAngle = dragAngle; + ctx.clearRect(0, 0, canvas.width, canvas.height); + drawPendulum(currentAngle, L); + + // Update numeric readouts during drag + timeReadout.textContent = "0.00"; + angleReadout.textContent = (currentAngle * (180 / Math.PI)).toFixed(1); + speedReadout.textContent = "0.00"; + + // Reset energy bars (PE only) + const h = L * (1 - Math.cos(currentAngle)); + const pe = g * h; + const total = pe; + peBar.style.width = total ? `${((pe / total) * 100).toFixed(1)}%` : "0%"; + keBar.style.width = "0%"; + + e.preventDefault(); // Prevent scrolling on touch + } + + // Helper function to end dragging + function endDrag() { + if (!isDragging) return; + isDragging = false; + theta0 = dragAngle; + angleChart.options.scales.y.min = -theta0; + angleChart.options.scales.y.max = theta0; + angleChart.update("none"); + + startTime = null; + animationId = requestAnimationFrame(animatePendulum); + } + + // Mouse events + canvas.addEventListener("mousedown", startDrag); + canvas.addEventListener("mousemove", handleDrag); + canvas.addEventListener("mouseup", endDrag); + canvas.addEventListener("mouseleave", endDrag); + + // Touch events for mobile + canvas.addEventListener("touchstart", startDrag); + canvas.addEventListener("touchmove", handleDrag); + canvas.addEventListener("touchend", endDrag); + canvas.addEventListener("touchcancel", endDrag); + + // Prevent default drag behavior + canvas.addEventListener("dragstart", (e) => { + e.preventDefault(); + }); + + // -------- End Drag & Release Logic -------- // +}); diff --git a/web/virtual_lab/static/virtual_lab/js/physics_projectile.js b/web/virtual_lab/static/virtual_lab/js/physics_projectile.js new file mode 100644 index 0000000..a48e456 --- /dev/null +++ b/web/virtual_lab/static/virtual_lab/js/physics_projectile.js @@ -0,0 +1,412 @@ +// web/virtual_lab/static/virtual_lab/js/physics_projectile.js + +document.addEventListener("DOMContentLoaded", () => { + // -------- 1. Tutorial Overlay Logic (animated bullet points) -------- // + const tutorialOverlay = document.getElementById("tutorial-overlay"); + const stepNumberElem = document.getElementById("step-number"); + const stepList = document.getElementById("step-list"); + const prevBtn = document.getElementById("tutorial-prev"); + const nextBtn = document.getElementById("tutorial-next"); + const skipBtn = document.getElementById("tutorial-skip"); + + const steps = [ + ["Click-and-drag FROM the launch pad (white circle at bottom-left) to set initial speed and angle."], + [ + "Drag length sets speed (longer drag → higher speed), direction sets angle.", + "Release to start the simulation." + ], + [ + "Adjust gravity and wind sliders BEFORE dragging; they affect the predicted trajectory.", + "After release, the full path animates." + ], + [ + "During flight, small x/y axes are drawn on the ball, showing velocity components.", + "Watch the “y vs x” plot updating in real time." + ], + ["Click “Begin Experiment” when ready, then drag from the launch pad!"] + ]; + + let currentStep = 0; + function showStep(index) { + stepNumberElem.textContent = index + 1; + stepList.innerHTML = ""; + steps[index].forEach((text, idx) => { + const li = document.createElement("li"); + li.textContent = text; + li.className = "opacity-0 transition-opacity duration-500"; + stepList.appendChild(li); + setTimeout(() => { + li.classList.remove("opacity-0"); + li.classList.add("opacity-100"); + }, idx * 200); + }); + prevBtn.disabled = index === 0; + nextBtn.textContent = index === steps.length - 1 ? "Begin Experiment" : "Next"; + } + + showStep(currentStep); + prevBtn.addEventListener("click", () => { + if (currentStep > 0) { + currentStep--; + showStep(currentStep); + } + }); + nextBtn.addEventListener("click", () => { + if (currentStep < steps.length - 1) { + currentStep++; + showStep(currentStep); + } else { + tutorialOverlay.style.display = "none"; + enableControls(); + } + }); + skipBtn.addEventListener("click", () => { + tutorialOverlay.style.display = "none"; + enableControls(); + }); + // -------- End Tutorial Logic -------- // + + + // -------- 2. DOM References & State -------- // + const canvas = document.getElementById("projectile-canvas"); + const ctx = canvas.getContext("2d"); + + const trajectoryCanvas = document.getElementById("trajectory-chart").getContext("2d"); + + const gravitySlider = document.getElementById("gravity-slider"); + const gravityValue = document.getElementById("gravity-value"); + const windSlider = document.getElementById("wind-slider"); + const windValue = document.getElementById("wind-value"); + const resetButton = document.getElementById("reset-button"); + + const timeReadout = document.getElementById("time-readout"); + const xReadout = document.getElementById("x-readout"); + const yReadout = document.getElementById("y-readout"); + const vxReadout = document.getElementById("vx-readout"); + const vyReadout = document.getElementById("vy-readout"); + + let g = Number.parseFloat(gravitySlider.value); + let windAccel = Number.parseFloat(windSlider.value); + + let originY = canvas.height - 10; + let pixelsPerMeter = 10; + + let v0 = 0, thetaRad = 0, vx = 0, vy0 = 0; + let maxRange = 0, maxHeight = 0; + + // Stores trajectory points and velocities + let trajectoryPoints = []; // { x_m, y_m, vx_t, vy_t } + let currentFrame = 0; + let animationId = null; + + const trajData = { + labels: [], + datasets: [{ + label: "y vs x (m)", + data: [], + borderColor: "#3182CE", + borderWidth: 2, + fill: false, + pointRadius: 0 + }] + }; + const trajChart = new Chart(trajectoryCanvas, { + type: "line", + data: trajData, + options: { + animation: false, + scales: { + x: { title: { display: true, text: "x (m)" } }, + y: { title: { display: true, text: "y (m)" } } + }, + plugins: { legend: { display: false } } + } + }); + + gravitySlider.disabled = true; + windSlider.disabled = true; + resetButton.disabled = true; + + + // -------- 3. Enable Controls & Initial Drawing -------- // + function enableControls() { + gravitySlider.disabled = false; + windSlider.disabled = false; + resetButton.disabled = false; + drawScene(); + } + + function drawAxes() { + ctx.clearRect(0, 0, canvas.width, canvas.height); + ctx.beginPath(); + ctx.moveTo(0, originY); + ctx.lineTo(canvas.width, originY); + ctx.strokeStyle = "#2D3748"; + ctx.lineWidth = 2; + ctx.stroke(); + } + + function drawLaunchPad() { + const padX = 10, padY = originY, padR = 8; + ctx.beginPath(); + ctx.arc(padX, padY, padR, 0, 2 * Math.PI); + ctx.fillStyle = "#FFFFFF"; + ctx.fill(); + ctx.strokeStyle = "#4A5568"; + ctx.lineWidth = 2; + ctx.stroke(); + } + + function drawScene() { + drawAxes(); + drawLaunchPad(); + } + + // -------- 4. Gravity & Wind Slider Handlers -------- // + gravitySlider.addEventListener("input", () => { + g = Number.parseFloat(gravitySlider.value); + gravityValue.textContent = g.toFixed(2); + }); + windSlider.addEventListener("input", () => { + windAccel = Number.parseFloat(windSlider.value); + windValue.textContent = windAccel.toFixed(2); + }); + + + // -------- 5. Aim-by-Drag Logic -------- // + let isAiming = false; + let aimStartX = 0, aimStartY = 0; + let aimCurrentX = 0, aimCurrentY = 0; + + canvas.addEventListener("mousedown", (e) => { + const rect = canvas.getBoundingClientRect(); + const mouseX = e.clientX - rect.left; + const mouseY = e.clientY - rect.top; + + const padX = 10, padY = originY, padR = 8; + const dist = Math.hypot(mouseX - padX, mouseY - padY); + if (dist <= padR + 4) { + isAiming = true; + aimStartX = padX; + aimStartY = padY; + aimCurrentX = mouseX; + aimCurrentY = mouseY; + + trajChart.data.labels = []; + trajChart.data.datasets[0].data = []; + trajChart.update("none"); + + timeReadout.textContent = "0.00"; + xReadout.textContent = "0.00"; + yReadout.textContent = "0.00"; + vxReadout.textContent = "0.00"; + vyReadout.textContent = "0.00"; + + drawScene(); + } + }); + + canvas.addEventListener("mousemove", (e) => { + if (!isAiming) return; + const rect = canvas.getBoundingClientRect(); + aimCurrentX = e.clientX - rect.left; + aimCurrentY = e.clientY - rect.top; + + drawScene(); + + ctx.beginPath(); + ctx.moveTo(aimStartX, aimStartY); + ctx.lineTo(aimCurrentX, aimCurrentY); + ctx.strokeStyle = "#DD6B20"; + ctx.lineWidth = 3; + ctx.setLineDash([5, 5]); + ctx.stroke(); + ctx.setLineDash([]); + }); + + canvas.addEventListener("mouseup", (e) => { + if (!isAiming) return; + isAiming = false; + + const dx_px = aimCurrentX - aimStartX; + const dy_px = aimCurrentY - aimStartY; + if (dx_px <= 0) { + drawScene(); + return; + } + + // Convert drag to meters using temporary scale: 1 px → 0.1 m + const tmpScale = 0.1; + const dx_m = dx_px * tmpScale; + const dy_m = (originY - aimCurrentY) * tmpScale; // invert y-axis + + v0 = Math.hypot(dx_m, dy_m); + thetaRad = Math.atan2(dy_m, dx_m); + vx = v0 * Math.cos(thetaRad); + vy0 = v0 * Math.sin(thetaRad); + + // Compute theoretical max range & height + maxRange = (v0 * v0 * Math.sin(2 * thetaRad)) / g; + maxHeight = (v0 * v0 * Math.sin(thetaRad) * Math.sin(thetaRad)) / (2 * g); + + // Recalculate pixelsPerMeter so full path fits + const marginX = 60, marginY = 60; + const availableWidth = canvas.width - marginX; + const availableHeight = originY - marginY; + const scaleX = availableWidth / (maxRange + 1); + const scaleY = availableHeight / (maxHeight + 1); + pixelsPerMeter = Math.min(scaleX, scaleY); + + // Build the discrete trajectory points + buildTrajectoryPoints(); + + // Clear and draw static full trajectory faintly + drawScene(); + drawStaticTrajectory(); + + // Start animation loop + currentFrame = 0; + if (animationId) cancelAnimationFrame(animationId); + animationId = requestAnimationFrame(animateBall); + }); + + + // -------- 6. Build Trajectory Points & Velocities -------- // + function buildTrajectoryPoints() { + trajectoryPoints = []; + const timeOfFlight = (2 * vy0) / g; + const steps = 200; + for (let i = 0; i <= steps; i++) { + const t = (i / steps) * timeOfFlight; + const x_m = vx * t + 0.5 * windAccel * t * t; + const y_m = vy0 * t - 0.5 * g * t * t; + if (y_m < 0) { + trajectoryPoints.push({ x_m, y_m: 0, vx_t: vx + windAccel * t, vy_t: 0 }); + break; + } + const vx_t = vx + windAccel * t; + const vy_t = vy0 - g * t; + trajectoryPoints.push({ x_m, y_m, vx_t, vy_t }); + } + } + + // -------- 7. Draw Static Full Trajectory (faint) -------- // + function drawStaticTrajectory() { + ctx.beginPath(); + trajectoryPoints.forEach((pt, idx) => { + const px = pt.x_m * pixelsPerMeter + 10; + const py = originY - pt.y_m * pixelsPerMeter; + if (idx === 0) ctx.moveTo(px, py); + else ctx.lineTo(px, py); + }); + ctx.strokeStyle = "rgba(221, 107, 32, 0.3)"; // faint orange + ctx.lineWidth = 2; + ctx.setLineDash([]); + ctx.stroke(); + } + + // -------- 8. Animation Loop: Move Ball & Draw Axes-On-Ball -------- // + function animateBall() { + if (currentFrame >= trajectoryPoints.length) return; + + // Clear and redraw background & static path + drawScene(); + drawStaticTrajectory(); + + const pt = trajectoryPoints[currentFrame]; + const canvasX = pt.x_m * pixelsPerMeter + 10; + const canvasY = originY - pt.y_m * pixelsPerMeter; + + // Draw the ball + ctx.beginPath(); + ctx.arc(canvasX, canvasY, 6, 0, 2 * Math.PI); + ctx.fillStyle = "#E53E3E"; + ctx.fill(); + ctx.strokeStyle = "#9B2C2C"; + ctx.stroke(); + + // Draw small x/y axes on the ball, and show velocity components + drawAxesOnBall(canvasX, canvasY, pt.vx_t, pt.vy_t); + + // Update numeric readouts + const t = (currentFrame / (trajectoryPoints.length - 1)) * ((2 * vy0) / g); + timeReadout.textContent = t.toFixed(2); + xReadout.textContent = pt.x_m.toFixed(2); + yReadout.textContent = pt.y_m.toFixed(2); + vxReadout.textContent = pt.vx_t.toFixed(2); + vyReadout.textContent = pt.vy_t.toFixed(2); + + // Update live plot with just this point + trajChart.data.labels.push(pt.x_m.toFixed(2)); + trajChart.data.datasets[0].data.push(pt.y_m.toFixed(2)); + trajChart.update("none"); + + currentFrame++; + animationId = requestAnimationFrame(animateBall); + } + + function drawAxesOnBall(cx, cy, vx_t, vy_t) { + // Draw a small cross (x and y axes) centered on the ball + const axisLen = 12; // total length of each axis line + ctx.strokeStyle = "#000000"; + ctx.lineWidth = 1; + ctx.beginPath(); + // Horizontal axis line + ctx.moveTo(cx - axisLen / 2, cy); + ctx.lineTo(cx + axisLen / 2, cy); + // Vertical axis line + ctx.moveTo(cx, cy - axisLen / 2); + ctx.lineTo(cx, cy + axisLen / 2); + ctx.stroke(); + + // Now plot velocity components as small dots on those axes: + // Scale velocities so they fit within half-axis length + const vScale = 0.2; // 1 m/s → 0.2 px + let vx_px = vx_t * vScale; + let vy_px = vy_t * vScale; + // Clamp so dot stays on axis line + vx_px = Math.max(Math.min(vx_px, axisLen / 2), -axisLen / 2); + vy_px = Math.max(Math.min(vy_px, axisLen / 2), -axisLen / 2); + + // Draw x-velocity dot (blue) on horizontal axis + ctx.beginPath(); + ctx.arc(cx + vx_px, cy, 2.5, 0, 2 * Math.PI); + ctx.fillStyle = "#3182CE"; + ctx.fill(); + + // Draw y-velocity dot (green) on vertical axis + ctx.beginPath(); + ctx.arc(cx, cy - vy_px, 2.5, 0, 2 * Math.PI); + ctx.fillStyle = "#38A169"; + ctx.fill(); + } + + // -------- 9. Reset Handler -------- // + resetButton.addEventListener("click", () => { + if (animationId) cancelAnimationFrame(animationId); + trajectoryPoints = []; + currentFrame = 0; + trajChart.data.labels = []; + trajChart.data.datasets[0].data = []; + trajChart.update("none"); + + drawScene(); + + g = 9.81; + windAccel = 0; + gravitySlider.value = "9.81"; + windSlider.value = "0"; + gravityValue.textContent = "9.81"; + windValue.textContent = "0.00"; + + timeReadout.textContent = "0.00"; + xReadout.textContent = "0.00"; + yReadout.textContent = "0.00"; + vxReadout.textContent = "0.00"; + vyReadout.textContent = "0.00"; + }); + + + // -------- 10. Initial Draw -------- // + drawScene(); +}); diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/index.html b/web/virtual_lab/templates/virtual_lab/chemistry/index.html new file mode 100644 index 0000000..8c09f72 --- /dev/null +++ b/web/virtual_lab/templates/virtual_lab/chemistry/index.html @@ -0,0 +1,58 @@ +{# templates/virtual_lab/chemistry/index.html #} +{% extends "virtual_lab/layout.html" %} + +{% load static %} +{% load i18n %} + +{% block virtual_lab_content %} +
+
+
+

{% trans "Chemistry Experiments" %}

+

+ {% trans "Explore these interactive chemistry simulations. Click on any card below to begin." %} +

+
+ + +

{% trans "Acid-Base Titration" %}

+

+ {% trans "Add titrant drop by drop and watch the color‐changing endpoint." %} +

+ + + +

{% trans "Reaction Rate" %}

+

+ {% trans "See how concentration affects the speed of a reaction in real time." %} +

+ + + +

{% trans "Solubility & Saturation" %}

+

+ {% trans "Dissolve solute until the solution reaches its saturation point." %} +

+ + + +

{% trans "Precipitation Reaction" %}

+

+ {% trans "Mix two clear solutions to form and view a precipitate." %} +

+ + + +

{% trans "pH Indicator" %}

+

{% trans "Adjust pH and watch the indicator change color." %}

+ +
+
+
+
+{% endblock %} diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html b/web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html new file mode 100644 index 0000000..458a40f --- /dev/null +++ b/web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html @@ -0,0 +1,58 @@ +{# templates/virtual_lab/chemistry/ph_indicator.html #} +{% extends "virtual_lab/layout.html" %} + +{% load static %} +{% load i18n %} + +{% block virtual_lab_content %} +
+

{% trans "pH Indicator" %}

+
+ +
+ + + +
+ {% trans "Enter a pH value (0–14) and click Update to see the color change." %} +
+
+
+ +
+ + + +
+
+
+{% endblock %} +{% block extra_scripts %} + +{% endblock %} diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html b/web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html new file mode 100644 index 0000000..aca5027 --- /dev/null +++ b/web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html @@ -0,0 +1,56 @@ +{# templates/virtual_lab/chemistry/precipitation.html #} +{% extends "virtual_lab/layout.html" %} + +{% load static %} +{% load i18n %} + +{% block virtual_lab_content %} +
+

{% trans "Precipitation Reaction" %}

+
+ +
+ + + +
+ {% trans "Click Add Reagent to begin." %} +
+
+
+ +
+ + + + + + +
+
+
+{% endblock %} +{% block extra_scripts %} + +{% endblock %} diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html b/web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html new file mode 100644 index 0000000..5154fd6 --- /dev/null +++ b/web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html @@ -0,0 +1,54 @@ +{# templates/virtual_lab/chemistry/reaction_rate.html #} +{% extends "virtual_lab/layout.html" %} + +{% load static %} +{% load i18n %} + +{% block extra_head %}{# no extra CSS needed #}{% endblock %} +{% block virtual_lab_content %} +
+

{% trans "Reaction Rate" %}

+
+ +
+ + + +
+ {% trans "Elapsed Time:" %} + 0 {% trans "s" %} +
+
+ {% trans "Set the concentration and start to see the reaction proceed..." %} +
+
+ {# will display "Reaction Complete" at the end #} +
+
+ + +
+
+{% endblock %} +{% block extra_scripts %} + +{% endblock %} diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/solubility.html b/web/virtual_lab/templates/virtual_lab/chemistry/solubility.html new file mode 100644 index 0000000..b8fd25e --- /dev/null +++ b/web/virtual_lab/templates/virtual_lab/chemistry/solubility.html @@ -0,0 +1,53 @@ +{# templates/virtual_lab/chemistry/solubility.html #} +{% extends "virtual_lab/layout.html" %} + +{% load static %} +{% load i18n %} + +{% block virtual_lab_content %} +
+

{% trans "Solubility & Saturation" %}

+
+ +
+ + + +
+ {% trans "Dissolved:" %} + 0 g +
+
+ {% trans "Solution is unsaturated. Add more solute to test saturation." %} +
+
+ {# final property will appear here #} +
+
+ + +
+
+{% endblock %} +{% block extra_scripts %} + +{% endblock %} diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/titration.html b/web/virtual_lab/templates/virtual_lab/chemistry/titration.html new file mode 100644 index 0000000..cda887c --- /dev/null +++ b/web/virtual_lab/templates/virtual_lab/chemistry/titration.html @@ -0,0 +1,78 @@ +{# templates/virtual_lab/chemistry/titration.html #} +{% extends "virtual_lab/layout.html" %} + +{% load static %} +{% load i18n %} + +{% block extra_head %}{# no extra CSS needed #}{% endblock %} +{% block virtual_lab_content %} +
+

{% trans "Acid-Base Titration" %}

+
+ +
+ + + + + +
+ {% trans "Titrant Added:" %} + 0 mL +
+
+ {% trans "Adjust the controls and start titration to see hints here..." %} +
+
+ {# will display: “Solution is Acidic/Neutral/Basic” #} +
+
+ +
+ + +
+
+
+{% endblock %} +{% block extra_scripts %} + +{% endblock %} diff --git a/web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html b/web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html new file mode 100644 index 0000000..882355c --- /dev/null +++ b/web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html @@ -0,0 +1,82 @@ +{# templates/virtual_lab/code_editor/code_editor.html #} +{% extends 'virtual_lab/layout.html' %} + +{% load static %} + +{% block title %} + Code Editor – Alpha Science Lab +{% endblock title %} +{% block extra_head %} + + + +{% endblock extra_head %} +{% block virtual_lab_content %} +
+

Interactive Code Editor

+ +
print("Hello, world!")
+ +
+ + +
+ +
+ + +
+ +
+ +
+ +
+

Output:

+ 

+    

+  

+{% endblock virtual_lab_content %}
+{% block extra_scripts %}
+  
+  
+{% endblock extra_scripts %}
diff --git a/web/virtual_lab/templates/virtual_lab/home.html b/web/virtual_lab/templates/virtual_lab/home.html
new file mode 100644
index 0000000..159d14f
--- /dev/null
+++ b/web/virtual_lab/templates/virtual_lab/home.html
@@ -0,0 +1,51 @@
+{# web/virtual_lab/templates/virtual_lab/home.html #}
+{% extends "virtual_lab/layout.html" %}
+
+{% load static %}
+
+{% block virtual_lab_content %}
+  

+    

+      

+        
Welcome to the Alpha Science Lab

+        

+          Dive into interactive experiments and deepen your understanding of fundamental concepts. Click on any card below to begin.
+        

+        

+          
+          
+            
Pendulum Motion

+            
Visualize how length affects a pendulum's period.

+          
+          
+          
+            
Projectile Motion

+            
Launch a projectile and observe its real‐time trajectory.

+          
+          
+          
+            
Inclined Plane

+            
See a block slide down and discover acceleration on a ramp.

+          
+          
+          
+            
Mass–Spring Oscillation

+            
Set k and m, drag the mass, then watch it oscillate and view x(t).

+          
+          
+          
+            
Basic Electrical Circuit

+            

+              Build an RC circuit, adjust R, C, and V₀, and watch the capacitor charge in real time.
+            

+          
+        

+      

+    

+  

+{% endblock virtual_lab_content %}
diff --git a/web/virtual_lab/templates/virtual_lab/layout.html b/web/virtual_lab/templates/virtual_lab/layout.html
new file mode 100644
index 0000000..efb38e5
--- /dev/null
+++ b/web/virtual_lab/templates/virtual_lab/layout.html
@@ -0,0 +1,77 @@
+{# web/virtual_lab/templates/virtual_lab/layout.html #}
+{% extends "base.html" %}
+
+{% load static %}
+{% load i18n %}
+
+{% block content %}
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      {% block virtual_lab_content %}
+      {% endblock virtual_lab_content %}
+    

+    
+    

+      

+        © {% now "Y" %} Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  {% block extra_scripts %}
+  {% endblock extra_scripts %}
+{% endblock content %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/circuit.html b/web/virtual_lab/templates/virtual_lab/physics/circuit.html
new file mode 100644
index 0000000..4bf278a
--- /dev/null
+++ b/web/virtual_lab/templates/virtual_lab/physics/circuit.html
@@ -0,0 +1,157 @@
+{# web/virtual_lab/templates/virtual_lab/physics/circuit.html #}
+{% extends "virtual_lab/layout.html" %}
+
+{% load static %}
+
+{% block virtual_lab_content %}
+  

+    
+    

+      

+        

+          Step 1 of 4
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        

+          
Basic Electrical Circuit

+          

+            Build a simple RC circuit: a battery \(V_0\), a resistor \(R\), and a capacitor \(C\). Adjust \(V_0\), \(R\), and \(C\), then click “Start” to watch the capacitor charge. Observe real‐time \(V_C(t)\), \(I(t)\), and a live graph of capacitor voltage over time. After \(5\tau\), a quiz appears.
+          

+        

+        

+          
+          

+            
+            

+              

+                
+                
+                5.0 V
+              

+              

+                
+                
+                100 Ω
+              

+              

+                
+                
+                100 µF
+              

+              

+                
+                
+                
+              

+            

+            
+            

+              
+              
+              

+                

+                  Time: 0.00 s
+                

+                

+                  Voltage \(V_C\): 0.00 V
+                

+                

+                  Current \(I\): 0.00 A
+                

+                

+                  Time Constant \(\tau\): 0.01 s
+                

+              

+            

+            
+            
+          

+          
+          

+            
+            

+              
Capacitor Voltage vs Time

+              
+            

+            
+            

+              
Current vs Time

+              
+            

+          

+        

+      

+    

+  

+  
+  
+  
+  
+{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/inclined.html b/web/virtual_lab/templates/virtual_lab/physics/inclined.html
new file mode 100644
index 0000000..719b840
--- /dev/null
+++ b/web/virtual_lab/templates/virtual_lab/physics/inclined.html
@@ -0,0 +1,179 @@
+{# web/virtual_lab/templates/virtual_lab/physics/inclined.html #}
+{% extends "virtual_lab/layout.html" %}
+
+{% load static %}
+
+{% block virtual_lab_content %}
+  

+    
+    

+      

+        

+          Step 1 of 4
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        

+          
Inclined Plane Dynamics

+          

+            Drag the block to any starting point, adjust angle, friction, and mass.
+            Click “Launch” to let it slide, watch live readouts, energy bars, force vectors, and a real-time graph.
+            Once it reaches the bottom, a short quiz will appear.
+          

+        

+        

+          

+            

+              

+                
+                
+                30°
+              

+              

+                
+                
+                0.00
+              

+              

+                
+                
+                1.0 kg
+              

+              

+                
+                
+                
+              

+            

+            
+            

+              
+              
+              

+                

+                  Distance ↓: 0.00 m
+                

+                

+                  Speed: 0.00 m/s
+                

+                

+                  Accel: 0.00 m/s²
+                

+                

+                  PE: 0.00 J
+                

+                

+                  KE: 0.00 J
+                

+              

+            

+            
+            

+              

+                

+                mg sin α
+              

+              

+                

+                Normal (mg cos α)
+              

+              

+                

+                Friction (μ mg cos α)
+              

+            

+          

+          
+          

+            
+            

+              
Position vs Time

+              
+            

+            
+            

+              

+                
Potential Energy

+                

+                  
+                

+              

+              

+                
Kinetic Energy

+                

+                  
+                

+              

+            

+            
+            
+          

+        

+      

+    

+  

+  
+  
+  
+  
+{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/mass_spring.html b/web/virtual_lab/templates/virtual_lab/physics/mass_spring.html
new file mode 100644
index 0000000..b541b16
--- /dev/null
+++ b/web/virtual_lab/templates/virtual_lab/physics/mass_spring.html
@@ -0,0 +1,178 @@
+{# web/virtual_lab/templates/virtual_lab/physics/mass_spring.html #}
+{% extends "virtual_lab/layout.html" %}
+
+{% load static %}
+
+{% block virtual_lab_content %}
+  

+    
+    

+      

+        

+          Step 1 of 4
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        

+          
Mass–Spring Oscillation

+          

+            Drag the mass horizontally to set its initial displacement. Adjust the spring constant \(k\) and mass \(m\).
+            Click “Start” to see the mass oscillate. A live Position vs. Time graph and numeric readouts will update in real time.
+            After one full oscillation, a post-lab quiz will appear.
+          

+        

+        

+          
+          

+            
+            

+              

+                
+                
+                25
+              

+              

+                
+                
+                1.0 kg
+              

+              

+                
+                
+                0.20 m
+              

+              

+                
+                
+                
+              

+            

+            
+            

+              
+              
+              

+                

+                  Time: 0.00 s
+                

+                

+                  Position: 0.00 m
+                

+                

+                  Velocity: 0.00 m/s
+                

+                

+                  Acceleration: 0.00 m/s²
+                

+                

+                  Potential (½kx²): 0.00 J
+                

+                

+                  Kinetic (½mv²): 0.00 J
+                

+              

+            

+            
+            
+          

+          
+          

+            
+            

+              
Position vs Time

+              
+            

+            
+            

+              

+                
Potential Energy

+                

+                  
+                

+              

+              

+                
Kinetic Energy

+                

+                  
+                

+              

+            

+          

+        

+      

+    

+  

+  
+  
+  
+  
+{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/pendulum.html b/web/virtual_lab/templates/virtual_lab/physics/pendulum.html
new file mode 100644
index 0000000..e9a4f6a
--- /dev/null
+++ b/web/virtual_lab/templates/virtual_lab/physics/pendulum.html
@@ -0,0 +1,127 @@
+{# web/virtual_lab/templates/virtual_lab/physics/pendulum.html #}
+{% extends "virtual_lab/layout.html" %}
+
+{% load static %}
+
+{% block virtual_lab_content %}
+  

+    {# ---------------- Tutorial Overlay (unchanged) ---------------- #}
+    

+      

+        

+          Step 1 of 5
+        

+        
    
+          {# Animated bullet points inserted by JS #}
+        

+        

+          
+          
+          
+        

+      

+    

+    {# -------------- End Tutorial Overlay -------------- #}
+    

+      

+        
+        

+          
Pendulum Motion

+          

+            Follow the animated tutorial above, then start the simulation. Watch the pendulum swing and see its trail. Numerical readouts appear at top‐left.
+          

+        

+        {# -------- Pendulum area with trail, mini-graph, and readouts -------- #}
+        

+          
+          
+          {# Numerical Readouts in top-left corner #}
+          

+            

+              t = 0.00 s
+            

+            

+              θ = 0.0°
+            

+            

+              v = 0.0 m/s
+            

+          

+          {# Small graph overlaid in top-right #}
+          

+            
θ vs t

+            
+            
+          

+        

+        {# -------- End Pendulum area -------- #}
+        {# -------- Energy Bars -------- #}
+        

+          

+            
Potential Energy

+            

+              

+            

+          

+          

+            
Kinetic Energy

+            

+              

+            

+          

+        

+        {# -------- End Energy Bars -------- #}
+        
+        

+          

+            
+            
+            1.0 m
+          

+          
+          
+        

+        
+        
+      

+    

+  

+  {# Include the updated JS with audio references removed #}
+  
+{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/projectile.html b/web/virtual_lab/templates/virtual_lab/physics/projectile.html
new file mode 100644
index 0000000..af9e51d
--- /dev/null
+++ b/web/virtual_lab/templates/virtual_lab/physics/projectile.html
@@ -0,0 +1,158 @@
+{# web/virtual_lab/templates/virtual_lab/physics/projectile.html #}
+{% extends "virtual_lab/layout.html" %}
+
+{% load static %}
+
+{% block virtual_lab_content %}
+  

+    {# ---------------- Pre-Lab Tutorial Overlay ---------------- #}
+    

+      

+        

+          Step 1 of 5
+        

+        
    
+          {# JS will inject bullet points here with fade-in #}
+        

+        

+          
+          
+          
+        

+      

+    

+    {# -------------- End Tutorial Overlay -------------- #}
+    

+      

+        
+        

+          
Projectile Motion

+          

+            Click‐and‐drag from the launch pad (white circle) at left to set speed and angle.
+            

+            Release to fire. Adjust gravity or wind on the fly.
+            Watch the path and vectors, and see “y vs x” plotted live.
+          

+        

+        {# -------- Main Simulation Area: Canvas + Plot -------- #}
+        

+          {# ---------------- Projectile Canvas ---------------- #}
+          

+            
+            
+            {# Launch Pad Icon (white circle)—drawn via JS, but reserve a tooltip #}
+            

+              
+              Launch Pad
+            

+            {# Numeric Readouts (top-left) #}
+            

+              

+                t = 0.00 s
+              

+              

+                x = 0.00 m
+              

+              

+                y = 0.00 m
+              

+              

+                vₓ = 0.00 m/s
+              

+              

+                v_y = 0.00 m/s
+              

+            

+            {# Target Indicator (blue vertical marker), drawn by JS #}
+          

+          {# ---------------- Live Plot: y vs x ---------------- #}
+          

+            
Trajectory: y vs x

+            
+            
+          

+        

+        {# -------- End Simulation + Plot -------- #}
+        {# -------- Mid-Flight “What-If” Controls -------- #}
+        

+          
Mid-Flight Controls:

+          

+            

+              
+              
+            

+            

+              
+              
+            

+            

+              
+              

+            

+          

+        

+        {# -------- End Mid-Flight Controls -------- #}
+        {# -------- Post-Lab Quiz / Target Info (hidden initially) -------- #}
+        
+        {# -------- End Quiz -------- #}
+      

+    

+  

+  {# Include the JavaScript for all new features #}
+  
+{% endblock %}
diff --git a/web/virtual_lab/tests.py b/web/virtual_lab/tests.py
new file mode 100644
index 0000000..e69de29
diff --git a/web/virtual_lab/urls.py b/web/virtual_lab/urls.py
new file mode 100644
index 0000000..bd8b671
--- /dev/null
+++ b/web/virtual_lab/urls.py
@@ -0,0 +1,37 @@
+from django.urls import path
+
+from .views import (
+    chemistry_home,
+    code_editor_view,
+    evaluate_code,
+    ph_indicator_view,
+    physics_electrical_circuit_view,
+    physics_inclined_view,
+    physics_mass_spring_view,
+    physics_pendulum_view,
+    physics_projectile_view,
+    precipitation_view,
+    reaction_rate_view,
+    solubility_view,
+    titration_view,
+    virtual_lab_home,
+)
+
+app_name = "virtual_lab"
+
+urlpatterns = [
+    path("", virtual_lab_home, name="virtual_lab_home"),
+    path("physics/pendulum/", physics_pendulum_view, name="physics_pendulum"),
+    path("physics/projectile/", physics_projectile_view, name="physics_projectile"),
+    path("physics/inclined/", physics_inclined_view, name="physics_inclined"),
+    path("physics/mass_spring/", physics_mass_spring_view, name="physics_mass_spring"),
+    path("physics/circuit/", physics_electrical_circuit_view, name="physics_electrical_circuit"),
+    path("virtual_lab/chemistry/", chemistry_home, name="chemistry_home"),
+    path("virtual_lab/chemistry/titration/", titration_view, name="titration"),
+    path("virtual_lab/chemistry/reaction-rate/", reaction_rate_view, name="reaction_rate"),
+    path("virtual_lab/chemistry/solubility/", solubility_view, name="solubility"),
+    path("virtual_lab/chemistry/precipitation/", precipitation_view, name="precipitation"),
+    path("virtual_lab/chemistry/ph-indicator/", ph_indicator_view, name="ph_indicator"),
+    path("code-editor/", code_editor_view, name="code_editor"),
+    path("evaluate-code/", evaluate_code, name="evaluate_code"),
+]
diff --git a/web/virtual_lab/views.py b/web/virtual_lab/views.py
new file mode 100644
index 0000000..cee652a
--- /dev/null
+++ b/web/virtual_lab/views.py
@@ -0,0 +1,136 @@
+# web/virtual_lab/views.py
+
+import json
+import logging
+
+import requests
+from django.http import JsonResponse
+from django.shortcuts import render
+from django.views.decorators.http import require_POST
+
+logger = logging.getLogger(__name__)
+
+
+def virtual_lab_home(request):
+    """
+    Renders the Virtual Lab home page (home.html).
+    """
+    return render(request, "virtual_lab/home.html")
+
+
+def physics_pendulum_view(request):
+    """
+    Renders the Pendulum Motion simulation page (physics/pendulum.html).
+    """
+    return render(request, "virtual_lab/physics/pendulum.html")
+
+
+def physics_projectile_view(request):
+    """
+    Renders the Projectile Motion simulation page (physics/projectile.html).
+    """
+    return render(request, "virtual_lab/physics/projectile.html")
+
+
+def physics_inclined_view(request):
+    """
+    Renders the Inclined Plane simulation page (physics/inclined.html).
+    """
+    return render(request, "virtual_lab/physics/inclined.html")
+
+
+def physics_mass_spring_view(request):
+    """
+    Renders the Mass-Spring Oscillation simulation page (physics/mass_spring.html).
+    """
+    return render(request, "virtual_lab/physics/mass_spring.html")
+
+
+def physics_electrical_circuit_view(request):
+    """
+    Renders the Electrical Circuit simulation page (physics/circuit.html).
+    """
+    return render(request, "virtual_lab/physics/circuit.html")
+
+
+def chemistry_home(request):
+    return render(request, "virtual_lab/chemistry/index.html")
+
+
+def titration_view(request):
+    return render(request, "virtual_lab/chemistry/titration.html")
+
+
+def reaction_rate_view(request):
+    return render(request, "virtual_lab/chemistry/reaction_rate.html")
+
+
+def solubility_view(request):
+    return render(request, "virtual_lab/chemistry/solubility.html")
+
+
+def precipitation_view(request):
+    return render(request, "virtual_lab/chemistry/precipitation.html")
+
+
+def ph_indicator_view(request):
+    return render(request, "virtual_lab/chemistry/ph_indicator.html")
+
+
+# Piston’s public execute endpoint (rate-limited to 5 req/s) :contentReference[oaicite:0]{index=0}
+PISTON_EXECUTE_URL = "https://emkc.org/api/v2/piston/execute"
+
+LANG_FILE_EXT = {
+    "python": "py",
+    "javascript": "js",
+    "c": "c",
+    "cpp": "cpp",
+}
+
+
+def code_editor_view(request):
+    return render(request, "virtual_lab/code_editor/code_editor.html")
+
+
+@require_POST
+def evaluate_code(request):
+    """
+    Proxy code + stdin to Piston and return its JSON result.
+    """
+    data = json.loads(request.body)
+    source_code = data.get("code", "")
+    language = data.get("language", "python")  # e.g. "python","javascript","c","cpp"
+    stdin_text = data.get("stdin", "")
+
+    # Package content for Piston
+    ext = LANG_FILE_EXT.get(language, "txt")
+    files = [{"name": f"main.{ext}", "content": source_code}]
+    payload = {
+        "language": language,
+        "version": "*",  # semver selector; '*' picks latest :contentReference[oaicite:1]{index=1}
+        "files": files,
+        "stdin": stdin_text,
+        "args": [],
+    }
+
+    try:
+        resp = requests.post(PISTON_EXECUTE_URL, json=payload, timeout=10)
+        resp.raise_for_status()
+    except requests.RequestException:
+        # Log the full details for your own troubleshooting
+        logger.exception("Failed to call Piston execute endpoint")
+        # Return a safe, generic message to the user
+        return JsonResponse(
+            {"stderr": "Code execution service is currently unavailable. Please try again later."}, status=502
+        )
+
+    result = resp.json()
+    # Piston returns a structure like:
+    # { language, version, run: { stdout, stderr, code, signal, output } }
+    run = result.get("run", {})
+    return JsonResponse(
+        {
+            "stdout": run.get("stdout", run.get("output", "")),
+            "stderr": run.get("stderr", ""),
+        }
+    )
diff --git a/web/wsgi.py b/web/wsgi.py
new file mode 100644
index 0000000..edfa214
--- /dev/null
+++ b/web/wsgi.py
@@ -0,0 +1,5 @@
+import os
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'web.settings')
+application = get_wsgi_application()

From 1cf081255bd2b88b5499403dbd061be022f1fcb6 Mon Sep 17 00:00:00 2001
From: Lakshya-2440 
Date: Tue, 24 Feb 2026 02:35:21 +0530
Subject: [PATCH 2/2] Convert Django backend to plain static HTML/CSS/JS site

---
 fix_urls.py                                   |   22 -
 web/templates/index.html => index.html        |    8 +-
 manage.py                                     |   22 -
 poetry.lock                                   | 1935 ----
 pyproject.toml                                |   66 -
 remove_navbar.py                              |   19 -
 image.png => static/img/image.png             |  Bin
 .../virtual_lab/js/chemistry/ph_indicator.js  |    0
 .../virtual_lab/js/chemistry/precipitation.js |    0
 .../virtual_lab/js/chemistry/reaction_rate.js |    0
 .../virtual_lab/js/chemistry/solubility.js    |    0
 .../virtual_lab/js/chemistry/titration.js     |    0
 static/virtual_lab/js/code_editor.js          |   68 +
 .../virtual_lab/js/common.js                  |    0
 .../js/physics_electrical_circuit.js          |    0
 .../virtual_lab/js/physics_inclined.js        |    0
 .../virtual_lab/js/physics_mass_spring.js     |    0
 .../virtual_lab/js/physics_pendulum.js        |    0
 .../virtual_lab/js/physics_projectile.js      |    0
 virtual_lab/chemistry/index.html              |  663 ++
 virtual_lab/chemistry/ph-indicator/index.html |  661 ++
 .../chemistry/precipitation/index.html        |  659 ++
 .../chemistry/reaction-rate/index.html        |  656 ++
 .../chemistry/solubility/index.html           |  167 +-
 virtual_lab/chemistry/titration/index.html    |  680 ++
 virtual_lab/code-editor/index.html            |  684 ++
 virtual_lab/index.html                        |  657 ++
 virtual_lab/physics/circuit/index.html        |  763 ++
 virtual_lab/physics/inclined/index.html       |  785 ++
 virtual_lab/physics/mass_spring/index.html    |  784 ++
 virtual_lab/physics/pendulum/index.html       |  733 ++
 virtual_lab/physics/projectile/index.html     |  764 ++
 web/__init__.py                               |    0
 web/settings.py                               |  505 -
 web/static/img/image.png                      |  Bin 5111 -> 0 bytes
 web/urls.py                                   |   16 -
 web/views.py                                  | 8846 -----------------
 web/virtual_lab/__init__.py                   |    0
 web/virtual_lab/apps.py                       |   10 -
 web/virtual_lab/css/virtual_lab.css           |    0
 web/virtual_lab/models.py                     |    0
 .../static/virtual_lab/js/code_editor.js      |   53 -
 .../virtual_lab/chemistry/index.html          |   58 -
 .../virtual_lab/chemistry/ph_indicator.html   |   58 -
 .../virtual_lab/chemistry/precipitation.html  |   56 -
 .../virtual_lab/chemistry/reaction_rate.html  |   54 -
 .../virtual_lab/chemistry/solubility.html     |   53 -
 .../virtual_lab/chemistry/titration.html      |   78 -
 .../virtual_lab/code_editor/code_editor.html  |   82 -
 .../templates/virtual_lab/home.html           |   51 -
 .../templates/virtual_lab/layout.html         |   77 -
 .../virtual_lab/physics/circuit.html          |  157 -
 .../virtual_lab/physics/inclined.html         |  179 -
 .../virtual_lab/physics/mass_spring.html      |  178 -
 .../virtual_lab/physics/pendulum.html         |  127 -
 .../virtual_lab/physics/projectile.html       |  158 -
 web/virtual_lab/tests.py                      |    0
 web/virtual_lab/urls.py                       |   37 -
 web/virtual_lab/views.py                      |  136 -
 web/wsgi.py                                   |    5 -
 60 files changed, 8687 insertions(+), 13083 deletions(-)
 delete mode 100644 fix_urls.py
 rename web/templates/index.html => index.html (99%)
 delete mode 100644 manage.py
 delete mode 100644 poetry.lock
 delete mode 100644 pyproject.toml
 delete mode 100644 remove_navbar.py
 rename image.png => static/img/image.png (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/chemistry/ph_indicator.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/chemistry/precipitation.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/chemistry/reaction_rate.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/chemistry/solubility.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/chemistry/titration.js (100%)
 create mode 100644 static/virtual_lab/js/code_editor.js
 rename {web/virtual_lab/static => static}/virtual_lab/js/common.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/physics_electrical_circuit.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/physics_inclined.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/physics_mass_spring.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/physics_pendulum.js (100%)
 rename {web/virtual_lab/static => static}/virtual_lab/js/physics_projectile.js (100%)
 create mode 100644 virtual_lab/chemistry/index.html
 create mode 100644 virtual_lab/chemistry/ph-indicator/index.html
 create mode 100644 virtual_lab/chemistry/precipitation/index.html
 create mode 100644 virtual_lab/chemistry/reaction-rate/index.html
 rename web/templates/base.html => virtual_lab/chemistry/solubility/index.html (71%)
 create mode 100644 virtual_lab/chemistry/titration/index.html
 create mode 100644 virtual_lab/code-editor/index.html
 create mode 100644 virtual_lab/index.html
 create mode 100644 virtual_lab/physics/circuit/index.html
 create mode 100644 virtual_lab/physics/inclined/index.html
 create mode 100644 virtual_lab/physics/mass_spring/index.html
 create mode 100644 virtual_lab/physics/pendulum/index.html
 create mode 100644 virtual_lab/physics/projectile/index.html
 delete mode 100644 web/__init__.py
 delete mode 100644 web/settings.py
 delete mode 100644 web/static/img/image.png
 delete mode 100644 web/urls.py
 delete mode 100644 web/views.py
 delete mode 100644 web/virtual_lab/__init__.py
 delete mode 100644 web/virtual_lab/apps.py
 delete mode 100644 web/virtual_lab/css/virtual_lab.css
 delete mode 100644 web/virtual_lab/models.py
 delete mode 100644 web/virtual_lab/static/virtual_lab/js/code_editor.js
 delete mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/index.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/solubility.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/chemistry/titration.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/home.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/layout.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/physics/circuit.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/physics/inclined.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/physics/mass_spring.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/physics/pendulum.html
 delete mode 100644 web/virtual_lab/templates/virtual_lab/physics/projectile.html
 delete mode 100644 web/virtual_lab/tests.py
 delete mode 100644 web/virtual_lab/urls.py
 delete mode 100644 web/virtual_lab/views.py
 delete mode 100644 web/wsgi.py

diff --git a/fix_urls.py b/fix_urls.py
deleted file mode 100644
index 1b71997..0000000
--- a/fix_urls.py
+++ /dev/null
@@ -1,22 +0,0 @@
-import re
-import os
-
-filepath = "web/templates/base.html"
-with open(filepath, "r") as f:
-    content = f.read()
-
-# Find all {% url 'something' ... %}
-# We'll use a regex that matches the whole tag
-pattern = r"{%\s*url\s+['\"]([^'\"]+)['\"][^%]*%}"
-
-def replace_url(match):
-    url_target = match.group(1)
-    if url_target.startswith("virtual_lab"):
-        return match.group(0) # Keep virtual lab urls
-    return "#"
-
-new_content = re.sub(pattern, replace_url, content)
-
-with open(filepath, "w") as f:
-    f.write(new_content)
-print("Replaced broken urls in base.html")
diff --git a/web/templates/index.html b/index.html
similarity index 99%
rename from web/templates/index.html
rename to index.html
index e7ddd89..9e3a43f 100644
--- a/web/templates/index.html
+++ b/index.html
@@ -1,4 +1,4 @@
-{% verbatim %}
+
 
 
 
@@ -553,7 +553,7 @@ 
 {
+             {
               e.preventDefault();
               const overlay = document.getElementById('page-transition');
               overlay.classList.add('active');
@@ -772,9 +772,9 @@ 

 
 
 
-{% endverbatim %}
+
 
diff --git a/manage.py b/manage.py
deleted file mode 100644
index 116ccc9..0000000
--- a/manage.py
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env python3.10
-"""Django's command-line utility for administrative tasks."""
-import os
-import sys
-
-
-def main():
-    """Run administrative tasks."""
-    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "web.settings")
-    try:
-        from django.core.management import execute_from_command_line
-    except ImportError as exc:
-        raise ImportError(
-            "Couldn't import Django. Are you sure it's installed and "
-            "available on your PYTHONPATH environment variable? Did you "
-            "forget to activate a virtual environment?"
-        ) from exc
-    execute_from_command_line(sys.argv)
-
-
-if __name__ == "__main__":
-    main()
diff --git a/poetry.lock b/poetry.lock
deleted file mode 100644
index c0516b7..0000000
--- a/poetry.lock
+++ /dev/null
@@ -1,1935 +0,0 @@
-# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
-
-[[package]]
-name = "asgiref"
-version = "3.9.1"
-description = "ASGI specs, helper code, and adapters"
-optional = false
-python-versions = ">=3.9"
-groups = ["main"]
-files = [
-    {file = "asgiref-3.9.1-py3-none-any.whl", hash = "sha256:f3bba7092a48005b5f5bacd747d36ee4a5a61f4a269a6df590b43144355ebd2c"},
-    {file = "asgiref-3.9.1.tar.gz", hash = "sha256:a5ab6582236218e5ef1648f242fd9f10626cfd4de8dc377db215d5d5098e3142"},
-]
-
-[package.dependencies]
-typing_extensions = {version = ">=4", markers = "python_version < \"3.11\""}
-
-[package.extras]
-tests = ["mypy (>=1.14.0)", "pytest", "pytest-asyncio"]
-
-[[package]]
-name = "async-timeout"
-version = "5.0.1"
-description = "Timeout context manager for asyncio programs"
-optional = false
-python-versions = ">=3.8"
-groups = ["main"]
-markers = "python_full_version < \"3.11.3\""
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-
-[[package]]
-name = "bleach"
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-description = "An easy safelist-based HTML-sanitizing tool."
-optional = false
-python-versions = ">=3.9"
-groups = ["main"]
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-]
-
-[package.dependencies]
-webencodings = "*"
-
-[package.extras]
-css = ["tinycss2 (>=1.1.0,<1.5)"]
-
-[[package]]
-name = "cachetools"
-version = "5.5.1"
-description = "Extensible memoizing collections and decorators"
-optional = false
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-description = "Python package for providing Mozilla's CA Bundle."
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-python-versions = ">=3.6"
-groups = ["main"]
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-    {file = "tomli-2.2.1-cp313-cp313-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:e85e99945e688e32d5a35c1ff38ed0b3f41f43fad8df0bdf79f72b2ba7bc5272"},
-    {file = "tomli-2.2.1-cp313-cp313-musllinux_1_2_aarch64.whl", hash = "sha256:ac065718db92ca818f8d6141b5f66369833d4a80a9d74435a268c52bdfa73140"},
-    {file = "tomli-2.2.1-cp313-cp313-musllinux_1_2_i686.whl", hash = "sha256:d920f33822747519673ee656a4b6ac33e382eca9d331c87770faa3eef562aeb2"},
-    {file = "tomli-2.2.1-cp313-cp313-musllinux_1_2_x86_64.whl", hash = "sha256:a198f10c4d1b1375d7687bc25294306e551bf1abfa4eace6650070a5c1ae2744"},
-    {file = "tomli-2.2.1-cp313-cp313-win32.whl", hash = "sha256:d3f5614314d758649ab2ab3a62d4f2004c825922f9e370b29416484086b264ec"},
-    {file = "tomli-2.2.1-cp313-cp313-win_amd64.whl", hash = "sha256:a38aa0308e754b0e3c67e344754dff64999ff9b513e691d0e786265c93583c69"},
-    {file = "tomli-2.2.1-py3-none-any.whl", hash = "sha256:cb55c73c5f4408779d0cf3eef9f762b9c9f147a77de7b258bef0a5628adc85cc"},
-    {file = "tomli-2.2.1.tar.gz", hash = "sha256:cd45e1dc79c835ce60f7404ec8119f2eb06d38b1deba146f07ced3bbc44505ff"},
-]
-
-[[package]]
-name = "tqdm"
-version = "4.67.1"
-description = "Fast, Extensible Progress Meter"
-optional = false
-python-versions = ">=3.7"
-groups = ["main", "dev"]
-files = [
-    {file = "tqdm-4.67.1-py3-none-any.whl", hash = "sha256:26445eca388f82e72884e0d580d5464cd801a3ea01e63e5601bdff9ba6a48de2"},
-    {file = "tqdm-4.67.1.tar.gz", hash = "sha256:f8aef9c52c08c13a65f30ea34f4e5aac3fd1a34959879d7e59e63027286627f2"},
-]
-
-[package.dependencies]
-colorama = {version = "*", markers = "platform_system == \"Windows\""}
-
-[package.extras]
-dev = ["nbval", "pytest (>=6)", "pytest-asyncio (>=0.24)", "pytest-cov", "pytest-timeout"]
-discord = ["requests"]
-notebook = ["ipywidgets (>=6)"]
-slack = ["slack-sdk"]
-telegram = ["requests"]
-
-[[package]]
-name = "tweepy"
-version = "4.15.0"
-description = "Twitter library for Python"
-optional = false
-python-versions = ">=3.9"
-groups = ["main"]
-files = [
-    {file = "tweepy-4.15.0-py3-none-any.whl", hash = "sha256:64adcea317158937059e4e2897b3ceb750b0c2dd5df58938c2da8f7eb3b88e6a"},
-    {file = "tweepy-4.15.0.tar.gz", hash = "sha256:1345cbcdf0a75e2d89f424c559fd49fda4d8cd7be25cd5131e3b57bad8a21d76"},
-]
-
-[package.dependencies]
-oauthlib = ">=3.2.0,<4"
-requests = ">=2.27.0,<3"
-requests-oauthlib = ">=1.2.0,<3"
-
-[package.extras]
-async = ["aiohttp (>=3.7.3,<4)", "async-lru (>=1.0.3,<3)"]
-dev = ["coverage (>=4.4.2)", "coveralls (>=2.1.0)", "tox (>=3.21.0)"]
-docs = ["myst-parser (==0.15.2)", "readthedocs-sphinx-search (==0.1.1)", "sphinx (==4.2.0)", "sphinx-hoverxref (==0.7b1)", "sphinx-tabs (==3.2.0)", "sphinx_rtd_theme (==1.0.0)"]
-socks = ["requests[socks] (>=2.27.0,<3)"]
-test = ["urllib3 (<2)", "vcrpy (>=1.10.3)"]
-
-[[package]]
-name = "typing-extensions"
-version = "4.12.2"
-description = "Backported and Experimental Type Hints for Python 3.8+"
-optional = false
-python-versions = ">=3.8"
-groups = ["main", "dev"]
-files = [
-    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
-    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
-]
-markers = {dev = "python_version == \"3.10\""}
-
-[[package]]
-name = "tzdata"
-version = "2025.1"
-description = "Provider of IANA time zone data"
-optional = false
-python-versions = ">=2"
-groups = ["main"]
-markers = "sys_platform == \"win32\""
-files = [
-    {file = "tzdata-2025.1-py2.py3-none-any.whl", hash = "sha256:7e127113816800496f027041c570f50bcd464a020098a3b6b199517772303639"},
-    {file = "tzdata-2025.1.tar.gz", hash = "sha256:24894909e88cdb28bd1636c6887801df64cb485bd593f2fd83ef29075a81d694"},
-]
-
-[[package]]
-name = "uritemplate"
-version = "4.1.1"
-description = "Implementation of RFC 6570 URI Templates"
-optional = false
-python-versions = ">=3.6"
-groups = ["main"]
-files = [
-    {file = "uritemplate-4.1.1-py2.py3-none-any.whl", hash = "sha256:830c08b8d99bdd312ea4ead05994a38e8936266f84b9a7878232db50b044e02e"},
-    {file = "uritemplate-4.1.1.tar.gz", hash = "sha256:4346edfc5c3b79f694bccd6d6099a322bbeb628dbf2cd86eea55a456ce5124f0"},
-]
-
-[[package]]
-name = "urllib3"
-version = "2.6.0"
-description = "HTTP library with thread-safe connection pooling, file post, and more."
-optional = false
-python-versions = ">=3.9"
-groups = ["main"]
-files = [
-    {file = "urllib3-2.6.0-py3-none-any.whl", hash = "sha256:c90f7a39f716c572c4e3e58509581ebd83f9b59cced005b7db7ad2d22b0db99f"},
-    {file = "urllib3-2.6.0.tar.gz", hash = "sha256:cb9bcef5a4b345d5da5d145dc3e30834f58e8018828cbc724d30b4cb7d4d49f1"},
-]
-
-[package.extras]
-brotli = ["brotli (>=1.2.0) ; platform_python_implementation == \"CPython\"", "brotlicffi (>=1.2.0.0) ; platform_python_implementation != \"CPython\""]
-h2 = ["h2 (>=4,<5)"]
-socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
-zstd = ["backports-zstd (>=1.0.0) ; python_version < \"3.14\""]
-
-[[package]]
-name = "uvicorn"
-version = "0.34.0"
-description = "The lightning-fast ASGI server."
-optional = false
-python-versions = ">=3.9"
-groups = ["main"]
-files = [
-    {file = "uvicorn-0.34.0-py3-none-any.whl", hash = "sha256:023dc038422502fa28a09c7a30bf2b6991512da7dcdb8fd35fe57cfc154126f4"},
-    {file = "uvicorn-0.34.0.tar.gz", hash = "sha256:404051050cd7e905de2c9a7e61790943440b3416f49cb409f965d9dcd0fa73e9"},
-]
-
-[package.dependencies]
-click = ">=7.0"
-h11 = ">=0.8"
-typing-extensions = {version = ">=4.0", markers = "python_version < \"3.11\""}
-
-[package.extras]
-standard = ["colorama (>=0.4) ; sys_platform == \"win32\"", "httptools (>=0.6.3)", "python-dotenv (>=0.13)", "pyyaml (>=5.1)", "uvloop (>=0.14.0,!=0.15.0,!=0.15.1) ; sys_platform != \"win32\" and sys_platform != \"cygwin\" and platform_python_implementation != \"PyPy\"", "watchfiles (>=0.13)", "websockets (>=10.4)"]
-
-[[package]]
-name = "virtualenv"
-version = "20.29.2"
-description = "Virtual Python Environment builder"
-optional = false
-python-versions = ">=3.8"
-groups = ["dev"]
-files = [
-    {file = "virtualenv-20.29.2-py3-none-any.whl", hash = "sha256:febddfc3d1ea571bdb1dc0f98d7b45d24def7428214d4fb73cc486c9568cce6a"},
-    {file = "virtualenv-20.29.2.tar.gz", hash = "sha256:fdaabebf6d03b5ba83ae0a02cfe96f48a716f4fae556461d180825866f75b728"},
-]
-
-[package.dependencies]
-distlib = ">=0.3.7,<1"
-filelock = ">=3.12.2,<4"
-platformdirs = ">=3.9.1,<5"
-
-[package.extras]
-docs = ["furo (>=2023.7.26)", "proselint (>=0.13)", "sphinx (>=7.1.2,!=7.3)", "sphinx-argparse (>=0.4)", "sphinxcontrib-towncrier (>=0.2.1a0)", "towncrier (>=23.6)"]
-test = ["covdefaults (>=2.3)", "coverage (>=7.2.7)", "coverage-enable-subprocess (>=1)", "flaky (>=3.7)", "packaging (>=23.1)", "pytest (>=7.4)", "pytest-env (>=0.8.2)", "pytest-freezer (>=0.4.8) ; platform_python_implementation == \"PyPy\" or platform_python_implementation == \"CPython\" and sys_platform == \"win32\" and python_version >= \"3.13\"", "pytest-mock (>=3.11.1)", "pytest-randomly (>=3.12)", "pytest-timeout (>=2.1)", "setuptools (>=68)", "time-machine (>=2.10) ; platform_python_implementation == \"CPython\""]
-
-[[package]]
-name = "webencodings"
-version = "0.5.1"
-description = "Character encoding aliases for legacy web content"
-optional = false
-python-versions = "*"
-groups = ["main"]
-files = [
-    {file = "webencodings-0.5.1-py2.py3-none-any.whl", hash = "sha256:a0af1213f3c2226497a97e2b3aa01a7e4bee4f403f95be16fc9acd2947514a78"},
-    {file = "webencodings-0.5.1.tar.gz", hash = "sha256:b36a1c245f2d304965eb4e0a82848379241dc04b865afcc4aab16748587e1923"},
-]
-
-[[package]]
-name = "whitenoise"
-version = "6.9.0"
-description = "Radically simplified static file serving for WSGI applications"
-optional = false
-python-versions = ">=3.9"
-groups = ["main"]
-files = [
-    {file = "whitenoise-6.9.0-py3-none-any.whl", hash = "sha256:c8a489049b7ee9889617bb4c274a153f3d979e8f51d2efd0f5b403caf41c57df"},
-    {file = "whitenoise-6.9.0.tar.gz", hash = "sha256:8c4a7c9d384694990c26f3047e118c691557481d624f069b7f7752a2f735d609"},
-]
-
-[package.extras]
-brotli = ["brotli"]
-
-[metadata]
-lock-version = "2.1"
-python-versions = "^3.10"
-content-hash = "e27798cb7b36d69c67693ec009aa7f3f828552ee23a4a99494cede1ab7efb5a6"
diff --git a/pyproject.toml b/pyproject.toml
deleted file mode 100644
index f7736e7..0000000
--- a/pyproject.toml
+++ /dev/null
@@ -1,66 +0,0 @@
-[tool.poetry]
-name = "education-website"
-version = "0.1.0"
-description = "Alpha One Labs Educational Platform"
-authors = ["Alpha One Labs "]
-packages = [
-    { include = "web" }
-]
-
-[tool.poetry.dependencies]
-python = "^3.10"
-django = "^5.1"
-django-environ = "^0.11.2"
-django-simple-captcha = "^0.5.20"
-requests = "^2.32.4"
-djlint = "^1.36.4"
-stripe = "^11.4.1"
-google-auth-oauthlib = "^1.2.0"
-google-auth-httplib2 = "^0.2.0"
-google-api-python-client = "^2.118.0"
-icalendar = "^5.0.11"
-whitenoise = "^6.8.2"
-django-allauth = "^65.3.1"
-django-storages = "^1.14.4"
-django-markdownx = "^4.0.7"
-django-browser-reload = "^1.18.0"
-python-avatars = "^1.4.1"
-cryptography = "^44.0.2"
-tweepy = "^4.15.0"
-pillow = "^12.1.1"
-uvicorn = "^0.34.0"
-sentry-sdk = "^2.25.1"
-pyopenssl = "^25.0.0"
-oauth2client = "4.1.3"
-bleach = "^6.2.0"
-channels = "^4.3.1"
-channels-redis = "^4.3.0"
-redis = "^6.4.0"
-mysqlclient = "^2.2.4"
-psutil = "^7.1.3"
-
-[tool.poetry.group.dev.dependencies]
-djlint = "^1.34.1"
-pre-commit = "^3.6.0"
-
-[build-system]
-requires = ["poetry-core"]
-build-backend = "poetry.core.masonry.api"
-
-[tool.djlint]
-profile = "django"
-indent = 2
-blank_line_after_tag = "load,extends"
-close_void_tags = true
-format_css = true
-format_js = true
-
-[tool.black]
-line-length = 120
-target-version = ['py312']
-include = '\.pyi?$'
-
-[tool.isort]
-profile = "ruff"
-multi_line_output = 3
-line_length = 120
diff --git a/remove_navbar.py b/remove_navbar.py
deleted file mode 100644
index d5fbf6a..0000000
--- a/remove_navbar.py
+++ /dev/null
@@ -1,19 +0,0 @@
-filepath = "web/templates/base.html"
-with open(filepath, "r") as f:
-    lines = f.readlines()
-
-new_lines = []
-skip = False
-for line in lines:
-    if '
 {
+  const code = editor.getValue();
+  const stdin = stdinEl.value;
+  const language = langSel.value;
+
+  if (!code.trim()) {
+    outputEl.textContent = "🛑 Please type some code first.";
+    return;
+  }
+  outputEl.textContent = "Running…";
+  runBtn.disabled = true;
+
+  const langExtMap = {
+    python: "py",
+    javascript: "js",
+    c: "c",
+    cpp: "cpp",
+  };
+  const ext = langExtMap[language] || "txt";
+
+  fetch("https://emkc.org/api/v2/piston/execute", {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify({
+      language: language,
+      version: "*",
+      files: [{ name: `main.${ext}`, content: code }],
+      stdin: stdin,
+      args: [],
+    }),
+  })
+    .then((res) => res.json())
+    .then((data) => {
+      let out = "";
+      const run = data.run || {};
+      if (run.stderr) out += `ERROR:\n${run.stderr}\n`;
+      if (run.stdout) out += run.stdout;
+      if (!out && run.output) out += run.output;
+      outputEl.textContent = out || "[no output]";
+    })
+    .catch((err) => {
+      outputEl.textContent = `Request failed: ${err.message}`;
+    })
+    .finally(() => {
+      runBtn.disabled = false;
+    });
+});
diff --git a/web/virtual_lab/static/virtual_lab/js/common.js b/static/virtual_lab/js/common.js
similarity index 100%
rename from web/virtual_lab/static/virtual_lab/js/common.js
rename to static/virtual_lab/js/common.js
diff --git a/web/virtual_lab/static/virtual_lab/js/physics_electrical_circuit.js b/static/virtual_lab/js/physics_electrical_circuit.js
similarity index 100%
rename from web/virtual_lab/static/virtual_lab/js/physics_electrical_circuit.js
rename to static/virtual_lab/js/physics_electrical_circuit.js
diff --git a/web/virtual_lab/static/virtual_lab/js/physics_inclined.js b/static/virtual_lab/js/physics_inclined.js
similarity index 100%
rename from web/virtual_lab/static/virtual_lab/js/physics_inclined.js
rename to static/virtual_lab/js/physics_inclined.js
diff --git a/web/virtual_lab/static/virtual_lab/js/physics_mass_spring.js b/static/virtual_lab/js/physics_mass_spring.js
similarity index 100%
rename from web/virtual_lab/static/virtual_lab/js/physics_mass_spring.js
rename to static/virtual_lab/js/physics_mass_spring.js
diff --git a/web/virtual_lab/static/virtual_lab/js/physics_pendulum.js b/static/virtual_lab/js/physics_pendulum.js
similarity index 100%
rename from web/virtual_lab/static/virtual_lab/js/physics_pendulum.js
rename to static/virtual_lab/js/physics_pendulum.js
diff --git a/web/virtual_lab/static/virtual_lab/js/physics_projectile.js b/static/virtual_lab/js/physics_projectile.js
similarity index 100%
rename from web/virtual_lab/static/virtual_lab/js/physics_projectile.js
rename to static/virtual_lab/js/physics_projectile.js
diff --git a/virtual_lab/chemistry/index.html b/virtual_lab/chemistry/index.html
new file mode 100644
index 0000000..f9d808c
--- /dev/null
+++ b/virtual_lab/chemistry/index.html
@@ -0,0 +1,663 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    

+      

+        
Chemistry Experiments

+        

+          Explore these interactive chemistry simulations. Click on any card below to begin.
+        

+        

+          
+          
+            
Acid-Base Titration

+            

+              Add titrant drop by drop and watch the color‐changing endpoint.
+            

+          
+          
+          
+            
Reaction Rate

+            

+              See how concentration affects the speed of a reaction in real time.
+            

+          
+          
+          
+            
Solubility & Saturation

+            

+              Dissolve solute until the solution reaches its saturation point.
+            

+          
+          
+          
+            
Precipitation Reaction

+            

+              Mix two clear solutions to form and view a precipitate.
+            

+          
+          
+          
+            
pH Indicator

+            
Adjust pH and watch the indicator change color.

+          
+        

+      

+    

+  

+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/chemistry/ph-indicator/index.html b/virtual_lab/chemistry/ph-indicator/index.html
new file mode 100644
index 0000000..cee0209
--- /dev/null
+++ b/virtual_lab/chemistry/ph-indicator/index.html
@@ -0,0 +1,661 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
pH Indicator

+    

+      
+      

+        
+        
+        
+        

+          Enter a pH value (0–14) and click Update to see the color change.
+        

+        

+      

+      
+      

+        
+        
+        
+      

+    

+  

+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/chemistry/precipitation/index.html b/virtual_lab/chemistry/precipitation/index.html
new file mode 100644
index 0000000..9da1d22
--- /dev/null
+++ b/virtual_lab/chemistry/precipitation/index.html
@@ -0,0 +1,659 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
Precipitation Reaction

+    

+      
+      

+        
+        
+        
+        

+          Click Add Reagent to begin.
+        

+        

+      

+      
+      

+        
+        
+        
+        
+        
+        
+      

+    

+  

+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/chemistry/reaction-rate/index.html b/virtual_lab/chemistry/reaction-rate/index.html
new file mode 100644
index 0000000..a67ac30
--- /dev/null
+++ b/virtual_lab/chemistry/reaction-rate/index.html
@@ -0,0 +1,656 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
Reaction Rate

+    

+      
+      

+        
+        
+        
+        

+          Elapsed Time:
+          0 s
+        

+        

+          Set the concentration and start to see the reaction proceed...
+        

+        

+          
+        

+      

+      
+      
+    

+  

+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/web/templates/base.html b/virtual_lab/chemistry/solubility/index.html
similarity index 71%
rename from web/templates/base.html
rename to virtual_lab/chemistry/solubility/index.html
index 7dc1b19..d82d45c 100644
--- a/web/templates/base.html
+++ b/virtual_lab/chemistry/solubility/index.html
@@ -1,4 +1,6 @@
-{% load static %}
+
+
+
 
 
 
@@ -14,10 +16,10 @@
       content="education, open source, courses, learning, Alpha One Labs"
     />
     
-    
-    
+    
+    
     
-      {% block title %} Alpha One Labs - Open Source Education Platform {% endblock title %}
+       Alpha One Labs - Open Source Education Platform 
     
     
     
@@ -162,43 +164,126 @@
         box-sizing: inherit;
       }
     
-    {% block extra_head %} {% endblock extra_head %}
-    
+     
+    
   
   
-    {% if messages %}
-    

-      {% for message in messages %}
-      

-        

-          {% if message.tags == 'error' %}
-          
-          {% elif message.tags == 'success' %}
-          
-          {% elif message.tags == 'warning' %}
-          
-          {% else %}
-          
-          {% endif %}
-        

-        
{{ message }}

-        
+        
+        

+          Dissolved:
+          0 g
+        

+        

+          Solution is unsaturated. Add more solute to test saturation.
+        

+        

+          
+        

       

-      {% endfor %}
+      
+      
     

-    {% endif %} {% block extra_body %} {% block content %} {% endblock content %} {% endblock extra_body %} {% block base_footer %}
+  
+
+    
+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  
+  
+  
+  
+  
+
+  
     
     
-    {% endblock base_footer %}
+    
     
-    {% block extra_js %} {% endblock extra_js %}
-  
+     
+  
 
diff --git a/virtual_lab/chemistry/titration/index.html b/virtual_lab/chemistry/titration/index.html
new file mode 100644
index 0000000..0d73cbc
--- /dev/null
+++ b/virtual_lab/chemistry/titration/index.html
@@ -0,0 +1,680 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
Acid-Base Titration

+    

+      
+      

+        
+        
+        
+        
+        
+        

+          Titrant Added:
+          0 mL
+        

+        

+          Adjust the controls and start titration to see hints here...
+        

+        

+          
+        

+      

+      
+      

+        
+        
+      

+    

+  

+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/code-editor/index.html b/virtual_lab/code-editor/index.html
new file mode 100644
index 0000000..f4a71fb
--- /dev/null
+++ b/virtual_lab/code-editor/index.html
@@ -0,0 +1,684 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+      
+  Code Editor – Alpha Science Lab
+
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+  
+
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
Interactive Code Editor

+    
+    
print("Hello, world!")

+    
+    

+      
+      
+    

+    
+    

+      
+      
+    

+    
+    

+      
+    

+    
+    

+      
Output:

+      

+    

+  

+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/index.html b/virtual_lab/index.html
new file mode 100644
index 0000000..6cde3e0
--- /dev/null
+++ b/virtual_lab/index.html
@@ -0,0 +1,657 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    

+      

+        
Welcome to the Alpha Science Lab

+        

+          Dive into interactive experiments and deepen your understanding of fundamental concepts. Click on any card below to begin.
+        

+        

+          
+          
+            
Pendulum Motion

+            
Visualize how length affects a pendulum's period.

+          
+          
+          
+            
Projectile Motion

+            
Launch a projectile and observe its real‐time trajectory.

+          
+          
+          
+            
Inclined Plane

+            
See a block slide down and discover acceleration on a ramp.

+          
+          
+          
+            
Mass–Spring Oscillation

+            
Set k and m, drag the mass, then watch it oscillate and view x(t).

+          
+          
+          
+            
Basic Electrical Circuit

+            

+              Build an RC circuit, adjust R, C, and V₀, and watch the capacitor charge in real time.
+            

+          
+        

+      

+    

+  

+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/physics/circuit/index.html b/virtual_lab/physics/circuit/index.html
new file mode 100644
index 0000000..c37b788
--- /dev/null
+++ b/virtual_lab/physics/circuit/index.html
@@ -0,0 +1,763 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
+    

+      

+        

+          Step 1 of 4
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        

+          
Basic Electrical Circuit

+          

+            Build a simple RC circuit: a battery \(V_0\), a resistor \(R\), and a capacitor \(C\). Adjust \(V_0\), \(R\), and \(C\), then click “Start” to watch the capacitor charge. Observe real‐time \(V_C(t)\), \(I(t)\), and a live graph of capacitor voltage over time. After \(5\tau\), a quiz appears.
+          

+        

+        

+          
+          

+            
+            

+              

+                
+                
+                5.0 V
+              

+              

+                
+                
+                100 Ω
+              

+              

+                
+                
+                100 µF
+              

+              

+                
+                
+                
+              

+            

+            
+            

+              
+              
+              

+                

+                  Time: 0.00 s
+                

+                

+                  Voltage \(V_C\): 0.00 V
+                

+                

+                  Current \(I\): 0.00 A
+                

+                

+                  Time Constant \(\tau\): 0.01 s
+                

+              

+            

+            
+            
+          

+          
+          

+            
+            

+              
Capacitor Voltage vs Time

+              
+            

+            
+            

+              
Current vs Time

+              
+            

+          

+        

+      

+    

+  

+  
+  
+  
+  
+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/physics/inclined/index.html b/virtual_lab/physics/inclined/index.html
new file mode 100644
index 0000000..ecd7677
--- /dev/null
+++ b/virtual_lab/physics/inclined/index.html
@@ -0,0 +1,785 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
+    

+      

+        

+          Step 1 of 4
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        

+          
Inclined Plane Dynamics

+          

+            Drag the block to any starting point, adjust angle, friction, and mass.
+            Click “Launch” to let it slide, watch live readouts, energy bars, force vectors, and a real-time graph.
+            Once it reaches the bottom, a short quiz will appear.
+          

+        

+        

+          

+            

+              

+                
+                
+                30°
+              

+              

+                
+                
+                0.00
+              

+              

+                
+                
+                1.0 kg
+              

+              

+                
+                
+                
+              

+            

+            
+            

+              
+              
+              

+                

+                  Distance ↓: 0.00 m
+                

+                

+                  Speed: 0.00 m/s
+                

+                

+                  Accel: 0.00 m/s²
+                

+                

+                  PE: 0.00 J
+                

+                

+                  KE: 0.00 J
+                

+              

+            

+            
+            

+              

+                

+                mg sin α
+              

+              

+                

+                Normal (mg cos α)
+              

+              

+                

+                Friction (μ mg cos α)
+              

+            

+          

+          
+          

+            
+            

+              
Position vs Time

+              
+            

+            
+            

+              

+                
Potential Energy

+                

+                  
+                

+              

+              

+                
Kinetic Energy

+                

+                  
+                

+              

+            

+            
+            
+          

+        

+      

+    

+  

+  
+  
+  
+  
+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/physics/mass_spring/index.html b/virtual_lab/physics/mass_spring/index.html
new file mode 100644
index 0000000..87cdd28
--- /dev/null
+++ b/virtual_lab/physics/mass_spring/index.html
@@ -0,0 +1,784 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
+    

+      

+        

+          Step 1 of 4
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        

+          
Mass–Spring Oscillation

+          

+            Drag the mass horizontally to set its initial displacement. Adjust the spring constant \(k\) and mass \(m\).
+            Click “Start” to see the mass oscillate. A live Position vs. Time graph and numeric readouts will update in real time.
+            After one full oscillation, a post-lab quiz will appear.
+          

+        

+        

+          
+          

+            
+            

+              

+                
+                
+                25
+              

+              

+                
+                
+                1.0 kg
+              

+              

+                
+                
+                0.20 m
+              

+              

+                
+                
+                
+              

+            

+            
+            

+              
+              
+              

+                

+                  Time: 0.00 s
+                

+                

+                  Position: 0.00 m
+                

+                

+                  Velocity: 0.00 m/s
+                

+                

+                  Acceleration: 0.00 m/s²
+                

+                

+                  Potential (½kx²): 0.00 J
+                

+                

+                  Kinetic (½mv²): 0.00 J
+                

+              

+            

+            
+            
+          

+          
+          

+            
+            

+              
Position vs Time

+              
+            

+            
+            

+              

+                
Potential Energy

+                

+                  
+                

+              

+              

+                
Kinetic Energy

+                

+                  
+                

+              

+            

+          

+        

+      

+    

+  

+  
+  
+  
+  
+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/physics/pendulum/index.html b/virtual_lab/physics/pendulum/index.html
new file mode 100644
index 0000000..f1e033f
--- /dev/null
+++ b/virtual_lab/physics/pendulum/index.html
@@ -0,0 +1,733 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
+    

+      

+        

+          Step 1 of 5
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        
+        

+          
Pendulum Motion

+          

+            Follow the animated tutorial above, then start the simulation. Watch the pendulum swing and see its trail. Numerical readouts appear at top‐left.
+          

+        

+        
+        

+          
+          
+          
+          

+            

+              t = 0.00 s
+            

+            

+              θ = 0.0°
+            

+            

+              v = 0.0 m/s
+            

+          

+          
+          

+            
θ vs t

+            
+            
+          

+        

+        
+        
+        

+          

+            
Potential Energy

+            

+              

+            

+          

+          

+            
Kinetic Energy

+            

+              

+            

+          

+        

+        
+        
+        

+          

+            
+            
+            1.0 m
+          

+          
+          
+        

+        
+        
+      

+    

+  

+  
+  
+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/virtual_lab/physics/projectile/index.html b/virtual_lab/physics/projectile/index.html
new file mode 100644
index 0000000..e497aa2
--- /dev/null
+++ b/virtual_lab/physics/projectile/index.html
@@ -0,0 +1,764 @@
+
+
+
+
+
+
+  
+    
+    
+    
+    
+    
+    
+    
+    
+       Alpha One Labs - Open Source Education Platform 
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+    
+     
+    
+  
+  
+      
+  

+    
+    

+      

+        
+          Alpha Science Lab Logo
+          Alpha Science Lab
+        
+        
+      

+    

+    
+    

+      
+  

+    
+    

+      

+        

+          Step 1 of 5
+        

+        
    
+          
+        

+        

+          
+          
+          
+        

+      

+    

+    
+    

+      

+        
+        

+          
Projectile Motion

+          

+            Click‐and‐drag from the launch pad (white circle) at left to set speed and angle.
+            

+            Release to fire. Adjust gravity or wind on the fly.
+            Watch the path and vectors, and see “y vs x” plotted live.
+          

+        

+        
+        

+          
+          

+            
+            
+            
+            

+              
+              Launch Pad
+            

+            
+            

+              

+                t = 0.00 s
+              

+              

+                x = 0.00 m
+              

+              

+                y = 0.00 m
+              

+              

+                vₓ = 0.00 m/s
+              

+              

+                v_y = 0.00 m/s
+              

+            

+            
+          

+          
+          

+            
Trajectory: y vs x

+            
+            
+          

+        

+        
+        
+        

+          
Mid-Flight Controls:

+          

+            

+              
+              
+            

+            

+              
+              
+            

+            

+              
+              

+            

+          

+        

+        
+        
+        
+        
+      

+    

+  

+  
+  
+
+    

+    
+    

+      

+        © 2026 Alpha One Labs. All rights reserved.
+      

+    

+  

+  
+  
+  
+  
+  
+    
+    
+    
+    
+     
+  
+
diff --git a/web/__init__.py b/web/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/web/settings.py b/web/settings.py
deleted file mode 100644
index a353f24..0000000
--- a/web/settings.py
+++ /dev/null
@@ -1,505 +0,0 @@
-import logging
-import os
-import sys
-from pathlib import Path
-
-import environ
-import sentry_sdk
-from cryptography.fernet import Fernet
-from django.core.exceptions import DisallowedHost
-from sentry_sdk.integrations.django import DjangoIntegration
-from sentry_sdk.integrations.logging import LoggingIntegration
-
-BASE_DIR = Path(__file__).resolve().parent.parent
-
-env = environ.Env()
-
-env_file = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), ".env")
-
-
-# Set encryption key for secure messaging; in production, this must come from the environment
-MESSAGE_ENCRYPTION_KEY = env.str("MESSAGE_ENCRYPTION_KEY", default=Fernet.generate_key()).strip()
-SECURE_MESSAGE_KEY = MESSAGE_ENCRYPTION_KEY
-
-if os.path.exists(env_file):
-    environ.Env.read_env(env_file)
-else:
-    print("No .env file found.")
-
-# Re-initialize / initialize Sentry AFTER environment variables are loaded so DSN is present here.
-SENTRY_DSN = env.str("SENTRY_DSN", default="")
-if SENTRY_DSN:
-    # Capture WARNING+ as breadcrumbs and ERROR+ as events
-    sentry_logging = LoggingIntegration(
-        level=getattr(logging, os.getenv("SENTRY_LOG_LEVEL", "INFO").upper(), logging.INFO),
-        event_level=logging.ERROR,
-    )
-    sentry_sdk.init(
-        dsn=SENTRY_DSN,
-        integrations=[DjangoIntegration(), sentry_logging],
-        environment=env.str("ENVIRONMENT", default="development"),
-        send_default_pii=True,
-        traces_sample_rate=float(os.getenv("SENTRY_TRACES_SAMPLE_RATE", 0.0)),  # set >0 to enable performance
-        # Do not send Invalid Host (DisallowedHost) errors to Sentry
-        ignore_errors=(DisallowedHost,),
-    )
-else:
-    # Helpful notice for ops without breaking startup
-    print("Sentry DSN not configured; error events will not be sent.")
-
-SECRET_KEY = env.str("SECRET_KEY", default="django-insecure-5kyff0s@l_##j3jawec5@b%!^^e(j7v)ouj4b7q6kru#o#a)o3")
-# Debug settings
-ENVIRONMENT = env.str("ENVIRONMENT", default="development")
-
-# Default DEBUG to False for security
-DEBUG = False
-
-# Only enable DEBUG in local environment and only if DJANGO_DEBUG is True
-if ENVIRONMENT == "development":
-    DEBUG = True
-
-# Detect test environment and set DEBUG=True to use local media path
-if "test" in sys.argv:
-    TESTING = True
-    DEBUG = True
-else:
-    TESTING = False
-
-PA_USER = "alphaonelabs99282llkb"
-PA_HOST = PA_USER + ".pythonanywhere.com"
-PA_WSGI = "/var/www/" + PA_USER + "_pythonanywhere_com_wsgi.py"
-PA_SOURCE_DIR = "/home/" + PA_USER + "/web"
-
-# Social Media Settings
-TWITTER_USERNAME = "alphaonelabs"
-TWITTER_API_KEY = os.getenv("TWITTER_API_KEY")
-TWITTER_API_SECRET_KEY = os.getenv("TWITTER_API_SECRET_KEY")
-TWITTER_ACCESS_TOKEN = os.getenv("TWITTER_ACCESS_TOKEN")
-TWITTER_ACCESS_TOKEN_SECRET = os.getenv("TWITTER_ACCESS_TOKEN_SECRET")
-
-# Production settings
-if not DEBUG:
-    # SECURE_SSL_REDIRECT = True
-    # adding this to prevent redirect loop
-    SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
-    SESSION_COOKIE_SECURE = True
-    CSRF_COOKIE_SECURE = True
-    SECURE_HSTS_SECONDS = 31536000  # 1 year
-    SECURE_HSTS_INCLUDE_SUBDOMAINS = True
-    SECURE_HSTS_PRELOAD = True
-    SECURE_BROWSER_XSS_FILTER = True
-    SECURE_CONTENT_TYPE_NOSNIFF = True
-    SECURE_REDIRECT_EXEMPT = []
-    SECURE_SSL_HOST = "alphaonelabs.com"
-    SECURE_REFERRER_POLICY = "strict-origin-when-cross-origin"
-
-# Allow hosts list can be overridden via .env (comma-separated) while providing a strong default.
-ALLOWED_HOSTS = env.list(
-    "ALLOWED_HOSTS",
-    default=[
-        "alphaonelabs99282llkb.pythonanywhere.com",
-        "0.0.0.0",
-        "127.0.0.1",
-        "localhost",
-        "alphaonelabs.com",
-        ".alphaonelabs.com",
-    ],
-)
-
-# CSRF trusted origins can also be overridden through .env (comma-separated).
-CSRF_TRUSTED_ORIGINS = env.list(
-    "CSRF_TRUSTED_ORIGINS",
-    default=[
-        "https://alphaonelabs.com",
-        "https://www.alphaonelabs.com",
-        "http://127.0.0.1:8000",
-        "http://localhost:8000",
-    ],
-)
-
-# Timezone settings
-TIME_ZONE = "America/New_York"
-USE_TZ = True
-
-# Error handling
-handler404 = "django.views.defaults.page_not_found"
-# Custom handler for 429 (too many requests)
-# handler429 = "web.views.custom_429"
-
-# Admin notification settings
-ADMINS = [("Admin", os.getenv("EMAIL_FROM"))]
-SERVER_EMAIL = os.getenv("EMAIL_FROM")  # Email address error messages come from
-
-INSTALLED_APPS = [
-    "django.contrib.admin",
-    "django.contrib.auth",
-    "django.contrib.contenttypes",
-    "django.contrib.sessions",
-    "django.contrib.messages",
-    "django.contrib.staticfiles",
-    "django.contrib.sites",
-    "django.contrib.humanize",
-    "channels",
-    "allauth",
-    "allauth.account",
-    "captcha",
-    "markdownx",
-    "web",
-    "web.virtual_lab.apps.VirtualLabConfig",
-]
-
-if DEBUG and not TESTING:
-    INSTALLED_APPS.append("django_browser_reload")
-
-MIDDLEWARE = [
-    "django.middleware.security.SecurityMiddleware",
-    # Compress responses to reduce payload size
-    "django.middleware.gzip.GZipMiddleware",
-    "whitenoise.middleware.WhiteNoiseMiddleware",
-    "django.contrib.sessions.middleware.SessionMiddleware",
-    "django.middleware.locale.LocaleMiddleware",
-    "django.middleware.common.CommonMiddleware",
-    "django.middleware.csrf.CsrfViewMiddleware",
-    "django.contrib.auth.middleware.AuthenticationMiddleware",
-    "django.contrib.messages.middleware.MessageMiddleware",
-    "django.middleware.clickjacking.XFrameOptionsMiddleware",
-    "allauth.account.middleware.AccountMiddleware",
-    # "web.middleware.GlobalExceptionMiddleware",
-]
-
-if DEBUG and not TESTING:
-    MIDDLEWARE.insert(-2, "django_browser_reload.middleware.BrowserReloadMiddleware")
-
-ROOT_URLCONF = "web.urls"
-
-TEMPLATES = [
-    {
-        "BACKEND": "django.template.backends.django.DjangoTemplates",
-        "DIRS": [BASE_DIR / "web/templates"],
-        # Use cached loaders in production to avoid repeated template parsing
-        "APP_DIRS": DEBUG,
-        "OPTIONS": {
-            "context_processors": [
-                "django.template.context_processors.debug",
-                "django.template.context_processors.request",
-                "django.contrib.auth.context_processors.auth",
-                "django.contrib.messages.context_processors.messages",
-            ],
-            **(
-                {}
-                if DEBUG
-                else {
-                    "loaders": [
-                        (
-                            "django.template.loaders.cached.Loader",
-                            [
-                                "django.template.loaders.filesystem.Loader",
-                                "django.template.loaders.app_directories.Loader",
-                            ],
-                        )
-                    ]
-                }
-            ),
-        },
-    },
-]
-
-CAPTCHA_FONT_SIZE = 28
-CAPTCHA_IMAGE_SIZE = (150, 40)
-CAPTCHA_LETTER_ROTATION = (-20, 20)
-CAPTCHA_BACKGROUND_COLOR = "#f0f8ff"
-CAPTCHA_FOREGROUND_COLOR = "#2f4f4f"
-CAPTCHA_NOISE_FUNCTIONS = ("captcha.helpers.noise_arcs", "captcha.helpers.noise_dots")
-CAPTCHA_FILTER_FUNCTIONS = ("captcha.helpers.post_smooth",)
-CAPTCHA_2X_IMAGE = True
-CAPTCHA_TEST_MODE = False
-
-WSGI_APPLICATION = "web.wsgi.application"
-
-# Add ASGI application configuration
-
-# Channels / Redis channel layer configuration (assumes a local Redis unless overridden)
-REDIS_URL = env.str("REDIS_URL", default="redis://127.0.0.1:6379/0")
-CHANNEL_LAYERS = {
-    "default": {
-        "BACKEND": "channels_redis.core.RedisChannelLayer",
-        "CONFIG": {"hosts": [REDIS_URL]},
-    }
-}
-
-DATABASES = {
-    "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": BASE_DIR / "db.sqlite3",
-        # Persist DB connections to avoid reconnect overhead in production
-        "CONN_MAX_AGE": 300 if not DEBUG else 0,
-    }
-}
-
-AUTH_PASSWORD_VALIDATORS = [
-    {
-        "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
-    },
-    {
-        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
-    },
-    {
-        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
-    },
-    {
-        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
-    },
-]
-
-SITE_ID = 1
-SITE_NAME = "AlphaOne Labs"
-SITE_DOMAIN = "alphaonelabs.com"
-
-# Allauth settings
-ACCOUNT_EMAIL_REQUIRED = True
-ACCOUNT_USERNAME_REQUIRED = False  # Since we're using email authentication
-ACCOUNT_EMAIL_VERIFICATION = "mandatory"  # Require email verification
-ACCOUNT_LOGIN_METHODS = {"email"}
-ACCOUNT_UNIQUE_EMAIL = True
-ACCOUNT_PREVENT_ENUMERATION = True  # Prevent user enumeration
-ACCOUNT_USERNAME_MIN_LENGTH = 3
-ACCOUNT_LOGIN_ON_EMAIL_CONFIRMATION = True
-ACCOUNT_SESSION_REMEMBER = None  # Let user decide via checkbox
-ACCOUNT_REMEMBER_ME_FIELD = "remember"  # Match test field name
-ACCOUNT_LOGIN_ON_PASSWORD_RESET = True
-ACCOUNT_SIGNUP_PASSWORD_ENTER_TWICE = False
-ACCOUNT_LOGOUT_ON_GET = True
-ACCOUNT_SIGNUP_EMAIL_ENTER_TWICE = False
-ACCOUNT_LOGOUT_ON_PASSWORD_CHANGE = False
-ACCOUNT_OLD_PASSWORD_FIELD_ENABLED = True
-ACCOUNT_EMAIL_AUTHENTICATION = True  # Enable email authentication
-ACCOUNT_EMAIL_CONFIRMATION_AUTHENTICATED_REDIRECT_URL = "index"
-ACCOUNT_EMAIL_CONFIRMATION_ANONYMOUS_REDIRECT_URL = "account_login"
-
-# Authentication backends
-AUTHENTICATION_BACKENDS = [
-    "django.contrib.auth.backends.ModelBackend",
-    "allauth.account.auth_backends.AuthenticationBackend",
-]
-
-# Authentication URLs
-LOGIN_URL = "account_login"
-LOGIN_REDIRECT_URL = "index"
-LOGOUT_REDIRECT_URL = "index"
-
-ACCOUNT_RATE_LIMITS = {
-    "login_attempt": "5/5m",  # 5 attempts per 5 minutes
-    "login_failed": "3/5m",  # 3 failed attempts per 5 minutes
-    "signup": "5/h",  # 5 signups per hour
-    "send_email": "5/5m",  # 5 emails per 5 minutes
-    "change_email": "3/h",  # 3 email changes per hour
-}
-
-# Override allauth forms
-
-LANGUAGE_CODE = "en"
-
-TIME_ZONE = "UTC"
-
-USE_I18N = True
-
-USE_TZ = True
-
-
-STATIC_URL = "/static/"
-
-
-DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
-
-"""
-Media files configuration
-
-Previously MEDIA_ROOT for production was hard-coded to the legacy PythonAnywhere
-path (/home/alphaonelabs99282llkb/web/media). That prevented the live server
-from locating media we now place under the project directory on the new VPS.
-
-We switch to an environment-variable override with a sane default pointing to
-/media for both dev and prod (unless a cloud storage backend is
-configured later). This keeps URLs stable (/media/...) while aligning file
-paths with the Nginx alias in ansible/nginx-http.conf.j2:
-    location /media/ { alias /home/django/education-website/media/; }
-
-If GS_BUCKET_NAME is set above, DEFAULT_FILE_STORAGE will override this with
-Google Cloud Storage; in that case MEDIA_ROOT is less relevant.
-"""
-MEDIA_ROOT = env.str("MEDIA_ROOT", default=str(BASE_DIR / "media"))
-MEDIA_URL = "/media/"
-
-STATIC_ROOT = os.path.join(BASE_DIR, "staticfiles")
-STATICFILES_DIRS = [BASE_DIR / "static"]
-STATICFILES_STORAGE = "whitenoise.storage.CompressedManifestStaticFilesStorage"
-
-# Caching configuration: fast in-memory cache by default; can be
-# overridden via environment (e.g., django-redis) without code changes.
-CACHES = {
-    "default": {
-        "BACKEND": "django.core.cache.backends.locmem.LocMemCache",
-        "LOCATION": "alphaonelabs-local",
-        "TIMEOUT": 300,
-        "OPTIONS": {"MAX_ENTRIES": 10000},
-    }
-}
-
-# Cache middleware settings (usable when wrapping views or enabling site-wide cache)
-CACHE_MIDDLEWARE_ALIAS = "default"
-CACHE_MIDDLEWARE_SECONDS = int(os.getenv("CACHE_MIDDLEWARE_SECONDS", "300"))
-CACHE_MIDDLEWARE_KEY_PREFIX = os.getenv("CACHE_MIDDLEWARE_KEY_PREFIX", "aol")
-
-# Use cached sessions in normal runtime to reduce DB hits; keep default during tests
-if not TESTING:
-    SESSION_ENGINE = "django.contrib.sessions.backends.cached_db"
-
-# Drop noisy Invalid Host messages from logs entirely
-LOGGING = {
-    "version": 1,
-    "disable_existing_loggers": False,
-    "handlers": {
-        "null": {"class": "logging.NullHandler"},
-        # Ensure any accidental use of 'mail_admins' will be a no-op
-        "mail_admins": {"class": "logging.NullHandler"},
-    },
-    "loggers": {
-        # Django emits DisallowedHost on invalid/missing Host header; silence it
-        "django.security.DisallowedHost": {
-            "handlers": ["null"],
-            "level": "ERROR",
-            "propagate": False,
-        },
-        # Do not email admins on request/server errors
-        "django.request": {
-            "handlers": ["null"],
-            "level": "ERROR",
-            "propagate": False,
-        },
-        "django.server": {
-            "handlers": ["null"],
-            "level": "ERROR",
-            "propagate": False,
-        },
-    },
-}
-
-# Email settings
-if DEBUG:
-    EMAIL_BACKEND = "django.core.mail.backends.console.EmailBackend"
-    print("Using console email backend for development")
-    DEFAULT_FROM_EMAIL = "noreply@example.com"  # Default for development
-    MAILGUN_SENDING_KEY = None  # Not needed in development
-else:
-    # Production email settings
-    EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend"
-    MAILGUN_SENDING_KEY = env.str("MAILGUN_SENDING_KEY", default="")
-    # Optional: set MAILGUN_DOMAIN explicitly; otherwise inferred from DEFAULT_FROM_EMAIL
-    MAILGUN_DOMAIN = env.str("MAILGUN_DOMAIN", default="") or None
-    DEFAULT_FROM_EMAIL = env.str("EMAIL_FROM", default="noreply@alphaonelabs.com")
-    EMAIL_FROM = os.getenv("EMAIL_FROM")
-
-# Stripe settings
-STRIPE_PUBLISHABLE_KEY = env("STRIPE_PUBLISHABLE_KEY", default="")
-STRIPE_SECRET_KEY = env("STRIPE_SECRET_KEY", default="")
-STRIPE_WEBHOOK_SECRET = env("STRIPE_WEBHOOK_SECRET", default="")
-
-# Social Media and Content API Settings
-MAILCHIMP_API_KEY = env.str("MAILCHIMP_API_KEY", default="")
-MAILCHIMP_LIST_ID = env.str("MAILCHIMP_LIST_ID", default="")
-
-INSTAGRAM_ACCESS_TOKEN = env.str("INSTAGRAM_ACCESS_TOKEN", default="")
-FACEBOOK_ACCESS_TOKEN = env.str("FACEBOOK_ACCESS_TOKEN", default="")
-
-GITHUB_ACCESS_TOKEN = env.str("GITHUB_ACCESS_TOKEN", default="")
-GITHUB_REPO = env.str("GITHUB_REPO", default="AlphaOneLabs/education-website")
-
-YOUTUBE_API_KEY = env.str("YOUTUBE_API_KEY", default="")
-YOUTUBE_CHANNEL_ID = env.str("YOUTUBE_CHANNEL_ID", default="")
-
-TWITTER_USERNAME = env.str("TWITTER_USERNAME", default="alphaonelabs")
-
-# Slack Integration
-SLACK_WEBHOOK_URL = env.str("SLACK_WEBHOOK_URL", default="")
-
-# Slack webhook for email notifications
-EMAIL_SLACK_WEBHOOK = env.str("EMAIL_SLACK_WEBHOOK", default=SLACK_WEBHOOK_URL)
-
-LANGUAGES = [
-    ("en", "English"),
-    ("es", "Spanish"),
-    ("fr", "French"),
-    ("de", "German"),
-    ("zh-hans", "Simplified Chinese"),
-]
-
-LOCALE_PATHS = [
-    BASE_DIR / "locale",
-]
-
-USE_L10N = True
-
-if os.environ.get("DATABASE_URL"):
-    DATABASES = {"default": env.db()}
-
-    # Only add MySQL-specific options if using MySQL
-    if DATABASES["default"]["ENGINE"] == "django.db.backends.mysql":
-        DATABASES["default"]["OPTIONS"] = {
-            "charset": "utf8mb4",
-            "sql_mode": (
-                "STRICT_TRANS_TABLES,"
-                "NO_ZERO_IN_DATE,"
-                "NO_ZERO_DATE,"
-                "ERROR_FOR_DIVISION_BY_ZERO,"
-                "NO_ENGINE_SUBSTITUTION"
-            ),
-            "init_command": "SET NAMES 'utf8mb4' COLLATE 'utf8mb4_unicode_ci'",
-        }
-
-    # Google Cloud Storage settings for media files in production
-    if os.environ.get("GS_BUCKET_NAME"):
-        DEFAULT_FILE_STORAGE = "storages.backends.gcloud.GoogleCloudStorage"
-        GS_BUCKET_NAME = os.environ.get("GS_BUCKET_NAME")
-        GS_PROJECT_ID = os.environ.get("GS_PROJECT_ID")
-
-        # Get service account file path from .env
-        service_account_filename = env.str("SERVICE_ACCOUNT_FILE")
-        SERVICE_ACCOUNT_FILE = os.path.join(BASE_DIR, service_account_filename)
-        if os.path.exists(SERVICE_ACCOUNT_FILE):
-            from google.oauth2 import service_account
-
-            GS_CREDENTIALS = service_account.Credentials.from_service_account_file(SERVICE_ACCOUNT_FILE)
-        else:
-            print(f"Warning: Service account file not found at {SERVICE_ACCOUNT_FILE}")
-            GS_CREDENTIALS = None
-
-        GS_DEFAULT_ACL = "publicRead"
-        GS_QUERYSTRING_AUTH = False
-        GS_LOCATION = "media"  # Store files in a media directory in the bucket
-
-
-# Admin URL Configuration
-ADMIN_URL = env.str("ADMIN_URL", default="a-dmin-url123")
-
-# Markdownx configuration
-MARKDOWNX_MARKDOWN_EXTENSIONS = [
-    "markdown.extensions.extra",
-    "markdown.extensions.codehilite",
-    "markdown.extensions.tables",
-    "markdown.extensions.toc",
-]
-
-MARKDOWNX_URLS_PATH = "/markdownx/markdownify/"
-MARKDOWNX_UPLOAD_URLS_PATH = "/markdownx/upload/"
-MARKDOWNX_MEDIA_PATH = "markdownx/"  # Path within MEDIA_ROOT
-
-USE_X_FORWARDED_HOST = True
-
-# GitHub API Token for fetching contributor data
-GITHUB_TOKEN = os.environ.get("GITHUB_TOKEN", "")
-
-
-# Allow per-environment override of secure cookie behavior (useful for staging without HTTPS).
-CSRF_COOKIE_SECURE = env.bool("CSRF_COOKIE_SECURE", default=not DEBUG)
-SESSION_COOKIE_SECURE = env.bool("SESSION_COOKIE_SECURE", default=not DEBUG)
-GITHUB_WEBHOOK_SECRET = os.environ.get("GITHUB_WEBHOOK_SECRET", "")
diff --git a/web/static/img/image.png b/web/static/img/image.png
deleted file mode 100644
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GIT binary patch
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-                code = parts[1].strip("/")
-                if code:
-                    active_referral_codes.add(code)
-        elif "?ref=" in path:
-            # Format: /?ref=CODE or ?ref=CODE&other=params
-            parts = path.split("?ref=")
-            if len(parts) > 1:
-                code = parts[1].split("&")[0]  # Handle additional parameters
-                if code:
-                    active_referral_codes.add(code)
-
-    # Get profiles with referrals and/or clicks
-    profiles_with_activity = Profile.objects.filter(
-        models.Q(referrals__isnull=False)  # Has referrals
-        | models.Q(referral_code__in=active_referral_codes)  # Has clicks
-    ).distinct()
-
-    # Annotate with signups and enrollments
-    top_referrers = profiles_with_activity.annotate(
-        total_signups=models.Count("referrals", distinct=True),
-        total_enrollments=models.Count(
-            "referrals__user__enrollments",
-            filter=models.Q(referrals__user__enrollments__status="approved"),
-            distinct=True,
-        ),
-    ).order_by("-total_signups", "-total_enrollments")[
-        :10
-    ]  # Get more and then sort by clicks
-
-    # Add click counts manually since WebRequest.user is a CharField, not a ForeignKey
-    for referrer in top_referrers:
-        # Look for both new format /ref/CODE/ and old format ?ref=CODE
-        ref_code = referrer.referral_code
-        clicks = WebRequest.objects.filter(
-            models.Q(path__contains=f"/ref/{ref_code}/") | models.Q(path__contains=f"?ref={ref_code}")
-        ).count()
-        referrer.total_clicks = clicks
-
-    # Re-sort to include click count in ranking
-    top_referrers = sorted(
-        top_referrers, key=lambda x: (x.total_signups, x.total_enrollments, x.total_clicks), reverse=True
-    )[
-        :3
-    ]  # Take top 3 after sorting
-
-    # Get current user's profile if authenticated
-    profile = request.user.profile if request.user.is_authenticated else None
-
-    # Get recent courses
-    featured_courses = Course.objects.filter(status="published").order_by("-created_at")[:6]
-
-    # Get featured goods
-    featured_goods = Goods.objects.filter(featured=True, is_available=True).order_by("-created_at")[:3]
-
-    # Get current challenge
-    current_challenge_obj = Challenge.objects.filter(
-        start_date__lte=timezone.now(), end_date__gte=timezone.now()
-    ).first()
-    current_challenge = [current_challenge_obj] if current_challenge_obj else []
-
-    # Get latest blog post
-    latest_post = BlogPost.objects.filter(status="published").order_by("-published_at").first()
-
-    # Get latest success story
-    latest_success_story = SuccessStory.objects.filter(status="published").order_by("-published_at").first()
-
-    # Get last two waiting room requests
-    latest_waiting_room_requests = WaitingRoom.objects.filter(status="open").order_by("-created_at")[:2]
-
-    # Global virtual classroom summary for homepage CTA
-    global_classroom = (
-        VirtualClassroom.objects.filter(name__iexact="Global Virtual Classroom", course__isnull=True)
-        .order_by("-created_at")
-        .first()
-    )
-    global_classroom_participants = 0
-    if global_classroom:
-        global_classroom_participants = VirtualClassroomParticipant.objects.filter(classroom=global_classroom).count()
-
-    # Get top latest 3 leaderboard users
-    try:
-        top_leaderboard_users, user_rank = get_leaderboard(request.user, period=None, limit=3)
-    except Exception:
-        logger = logging.getLogger(__name__)
-        logger.error("Error getting leaderboard data", exc_info=True)
-        top_leaderboard_users = []
-
-    # Get signup form if needed
-    form = None
-    if not request.user.is_authenticated or not request.user.profile.is_teacher:
-        form = TeacherSignupForm()
-
-    # Get video count and subjects for the quick add video form
-    video_count = EducationalVideo.objects.count()
-    subjects = Subject.objects.all().order_by("order", "name")
-
-    context = {
-        "profile": profile,
-        "featured_courses": featured_courses,
-        "featured_products": featured_goods,
-        "current_challenge": current_challenge,
-        "latest_post": latest_post,
-        "latest_success_story": latest_success_story,
-        "latest_waiting_room_requests": latest_waiting_room_requests,
-        "global_classroom": global_classroom,
-        "global_classroom_participants": global_classroom_participants,
-        "top_referrers": top_referrers,
-        "top_leaderboard_users": top_leaderboard_users,
-        "form": form,
-        "is_debug": settings.DEBUG,
-        "video_count": video_count,
-        "subjects": subjects,
-    }
-    if request.user.is_authenticated:
-        user_team_goals = (
-            TeamGoal.objects.filter(Q(creator=request.user) | Q(members__user=request.user))
-            .distinct()
-            .order_by("-created_at")[:3]
-        )
-
-        team_invites = TeamInvite.objects.filter(recipient=request.user, status="pending").select_related(
-            "goal", "sender"
-        )
-
-        context.update(
-            {
-                "user_team_goals": user_team_goals,
-                "team_invites": team_invites,
-            }
-        )
-
-        # Add courses that the user is teaching if they have any
-        teaching_courses = (
-            Course.objects.filter(teacher=request.user)
-            .annotate(
-                view_count=Coalesce(Sum("web_requests__count"), 0),
-                enrolled_students=Count("enrollments", filter=Q(enrollments__status="approved")),
-            )
-            .order_by("-created_at")
-        )
-
-        if teaching_courses.exists():
-            context.update(
-                {
-                    "teaching_courses": teaching_courses,
-                }
-            )
-    return render(request, "index.html", context)
-
-
-def signup_view(request):
-    """Custom signup view that properly handles referral codes."""
-    if request.method == "POST":
-        form = UserRegistrationForm(request.POST, request=request)
-        if form.is_valid():
-            form.save(request)
-            return redirect("account_email_verification_sent")
-    else:
-        # Initialize form with request to get referral code from session
-        form = UserRegistrationForm(request=request)
-
-        # If there's no referral code in session but it's in the URL, store it
-        ref_code = request.GET.get("ref")
-        if ref_code and not request.session.get("referral_code"):
-            request.session["referral_code"] = ref_code
-            # Reinitialize form to pick up the new session value
-            form = UserRegistrationForm(request=request)
-
-    return render(
-        request,
-        "account/signup.html",
-        {
-            "form": form,
-            "login_url": reverse("account_login"),
-        },
-    )
-
-
-@login_required
-def delete_account(request):
-    if request.method == "POST":
-        form = AccountDeleteForm(request.user, request.POST)
-        if form.is_valid():
-            if request.POST.get("confirm"):
-                user = request.user
-                user.delete()
-                logout(request)
-                messages.success(request, _("Your account has been successfully deleted."))
-                return redirect("index")
-            else:
-                form.add_error(None, _("You must confirm the account deletion."))
-    else:
-        # Get all related objects that will be deleted
-        deleted_objects_collector = NestedObjects(using=router.db_for_write(request.user.__class__))
-        deleted_objects_collector.collect([request.user])
-
-        # Transform the nested structure into something more user-friendly
-        to_delete = deleted_objects_collector.nested()
-        protected = deleted_objects_collector.protected
-
-        # Format the collected objects in a user-friendly way
-        model_count = {
-            model._meta.verbose_name_plural: len(objs) for model, objs in deleted_objects_collector.model_objs.items()
-        }
-
-        # Format as a list of tuples (model name, count)
-        formatted_count = [(name, count) for name, count in model_count.items()]
-
-        form = AccountDeleteForm(request.user)
-        # Pass the deletion info to the template
-        return render(
-            request,
-            "account/delete_account.html",
-            {"form": form, "deleted_objects": to_delete, "protected": protected, "model_count": formatted_count},
-        )
-
-    return render(request, "account/delete_account.html", {"form": form})
-
-
-@login_required
-def delete_waiting_room(request, waiting_room_id):
-    """View for deleting a waiting room."""
-    waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id)
-
-    # Only allow creator to delete
-    if request.user != waiting_room.creator:
-        messages.error(request, "You don't have permission to delete this waiting room.")
-        return redirect("waiting_room_detail", waiting_room_id=waiting_room_id)
-
-    if request.method == "POST":
-        waiting_room.delete()
-        messages.success(request, f"Waiting room '{waiting_room.title}' has been deleted.")
-        return redirect("waiting_room_list")
-
-    return render(request, "waiting_room/confirm_delete.html", {"waiting_room": waiting_room})
-
-
-@login_required
-def all_leaderboards(request):
-    """
-    Display all leaderboard types on a single page.
-    """
-    # Get cached leaderboard data or fetch fresh data
-    global_entries, global_rank = get_cached_leaderboard_data(request.user, None, 10, "global_leaderboard", 60 * 60)
-    weekly_entries, weekly_rank = get_cached_leaderboard_data(request.user, "weekly", 10, "weekly_leaderboard", 60 * 15)
-    monthly_entries, monthly_rank = get_cached_leaderboard_data(
-        request.user, "monthly", 10, "monthly_leaderboard", 60 * 30
-    )
-
-    # Get user points and challenge entries if authenticated non-teacher
-    challenge_entries = []
-    user_points = None
-
-    if request.user.is_authenticated and not request.user.profile.is_teacher:
-        user_points = get_user_points(request.user)
-        challenge_entries = get_cached_challenge_entries()
-
-        context = create_leaderboard_context(
-            global_entries,
-            weekly_entries,
-            monthly_entries,
-            challenge_entries,
-            global_rank,
-            weekly_rank,
-            monthly_rank,
-            user_points["total"],
-            user_points["weekly"],
-            user_points["monthly"],
-        )
-        return render(request, "leaderboards/leaderboards.html", context)
-    else:
-        context = create_leaderboard_context(
-            global_entries,
-            weekly_entries,
-            monthly_entries,
-            [],
-            global_rank,
-            weekly_rank,
-            monthly_rank,
-            None,
-            None,
-            None,
-        )
-        return render(request, "leaderboards/leaderboards.html", context)
-
-
-@login_required
-def profile(request):
-    if request.method == "POST":
-        form = ProfileUpdateForm(request.POST, request.FILES, instance=request.user)
-        if form.is_valid():
-            form.save()  # Save the form data
-            request.user.profile.refresh_from_db()  # Refresh to load updated profile
-            messages.success(request, "Profile updated successfully!")
-            return redirect("profile")
-        else:
-            for field, errors in form.errors.items():
-                for error in errors:
-                    messages.error(request, f"Error in {field}: {error}")
-    else:
-        form = ProfileUpdateForm(instance=request.user)
-
-    badges = UserBadge.objects.filter(user=request.user).select_related("badge")
-
-    context = {
-        "form": form,
-        "badges": badges,
-    }
-
-    # Teacher-specific stats
-    if request.user.profile.is_teacher:
-        courses = Course.objects.filter(teacher=request.user)
-        total_students = sum(course.enrollments.filter(status="approved").count() for course in courses)
-        avg_rating = 0
-        total_ratings = 0
-        for course in courses:
-            course_ratings = course.reviews.all()
-            if course_ratings:
-                avg_rating += sum(review.rating for review in course_ratings)
-                total_ratings += len(course_ratings)
-        avg_rating = round(avg_rating / total_ratings, 1) if total_ratings > 0 else 0
-        context.update(
-            {
-                "courses": courses,
-                "total_students": total_students,
-                "avg_rating": avg_rating,
-            }
-        )
-    # Student-specific stats
-    else:
-        enrollments = Enrollment.objects.filter(student=request.user).select_related("course")
-        completed_courses = enrollments.filter(status="completed").count()
-        total_progress = 0
-        progress_count = 0
-        for enrollment in enrollments:
-            progress, _ = CourseProgress.objects.get_or_create(enrollment=enrollment)
-            if progress.completion_percentage is not None:
-                total_progress += progress.completion_percentage
-                progress_count += 1
-        avg_progress = round(total_progress / progress_count) if progress_count > 0 else 0
-        context.update(
-            {
-                "enrollments": enrollments,
-                "completed_courses": completed_courses,
-                "avg_progress": avg_progress,
-            }
-        )
-
-    # Get created calendars if applicable
-    created_calendars = request.user.created_calendars.prefetch_related("time_slots").order_by("-created_at")
-    context["created_calendars"] = created_calendars
-
-    # *** Add Discount Codes ***
-    discount_codes = Discount.objects.filter(user=request.user, used=False, valid_until__gte=timezone.now())
-    context["discount_codes"] = discount_codes
-
-    return render(request, "profile.html", context)
-
-
-@login_required
-def create_course(request):
-    if request.method == "POST":
-        form = CourseForm(request.POST, request.FILES)
-        if form.is_valid():
-            course = form.save(commit=False)
-            course.teacher = request.user
-            course.status = "published"  # Set status to published
-            course.save()
-            form.save_m2m()  # Save many-to-many relationships
-
-            # Handle waiting room if course was created from one
-            if "waiting_room_data" in request.session:
-                waiting_room = get_object_or_404(WaitingRoom, id=request.session["waiting_room_data"]["id"])
-
-                # Update waiting room status and link to course
-                waiting_room.status = "fulfilled"
-                waiting_room.fulfilled_course = course
-                waiting_room.save(update_fields=["status", "fulfilled_course"])
-
-                # Send notifications to all participants
-                for participant in waiting_room.participants.all():
-                    messages.success(
-                        request,
-                        f"A new course matching your request has been created: {course.title}",
-                        extra_tags=f"course_{course.slug}",
-                    )
-
-                # Clear waiting room data from session
-                del request.session["waiting_room_data"]
-
-                # Redirect back to waiting room to show the update
-                return redirect("waiting_room_detail", waiting_room_id=waiting_room.id)
-
-            return redirect("course_detail", slug=course.slug)
-    else:
-        form = CourseForm()
-
-    return render(request, "courses/create.html", {"form": form})
-
-
-@login_required
-@teacher_required
-def create_course_from_waiting_room(request, waiting_room_id):
-    waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id)
-
-    # Ensure waiting room is open
-    if waiting_room.status != "open":
-        messages.error(request, "This waiting room is no longer open.")
-        return redirect("waiting_room_detail", waiting_room_id=waiting_room_id)
-
-    # Store waiting room data in session for validation
-    request.session["waiting_room_data"] = {
-        "id": waiting_room.id,
-        "subject": waiting_room.subject.strip().lower(),
-        "topics": [t.strip().lower() for t in waiting_room.topics.split(",") if t.strip()],
-    }
-
-    # Redirect to regular course creation form
-    return redirect(reverse("create_course"))
-
-
-@login_required
-@teacher_required
-def add_featured_review(request, slug, review_id):
-    # Get the course and review
-    course = get_object_or_404(Course, slug=slug)
-    review = get_object_or_404(Review, id=review_id, course=course)
-
-    # Check if the user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can manage featured reviews.")
-        return redirect(reverse("course_detail", kwargs={"slug": slug}))
-
-    # Set the is_featured field to True
-    review.is_featured = True
-    review.save()
-    messages.success(request, "Review has been featured.")
-
-    # Redirect to the course detail page
-    url = reverse("course_detail", kwargs={"slug": slug})
-    return redirect(f"{url}#course_reviews")
-
-
-@login_required
-@teacher_required
-def remove_featured_review(request, slug, review_id):
-    # Get the course and review
-    course = get_object_or_404(Course, slug=slug)
-    review = get_object_or_404(Review, id=review_id, course=course)
-
-    # Check if the user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can manage featured reviews.")
-        return redirect(reverse("course_detail", kwargs={"slug": slug}))
-
-    # Set the is_featured field to False
-    review.is_featured = False
-    review.save()
-
-    # Redirect to the course detail page
-    url = reverse("course_detail", kwargs={"slug": slug})
-    return redirect(f"{url}#course_reviews")
-
-
-@login_required
-def edit_review(request, slug, review_id):
-    course = get_object_or_404(Course, slug=slug)
-    review = get_object_or_404(Review, id=review_id, course__slug=slug)
-
-    # Security check - only allow editing own reviews
-    if request.user.id != review.student.id:
-        messages.error(request, "You can only edit your own reviews.")
-        return redirect("course_detail", slug=slug)
-
-    if request.method == "POST":
-        form = ReviewForm(request.POST, instance=review)
-        if form.is_valid():
-            review = form.save(commit=False)
-            review.save()
-            messages.success(request, "Your review has been updated.")
-            url = reverse("course_detail", kwargs={"slug": slug})
-            return redirect(f"{url}#course_reviews")
-    else:
-        form = ReviewForm(instance=review)
-
-    context = {
-        "form": form,
-        "course": course,
-        "review": review,
-        "action": "Edit",
-    }
-    return render(request, "courses/edit_or_add_review.html", context)
-
-
-@login_required
-def delete_review(request, slug, review_id):
-    review = get_object_or_404(Review, id=review_id, course__slug=slug)
-
-    # Security check - only allow deleting own reviews
-    if request.user.id != review.student.id:
-        messages.error(request, "You can only delete your own reviews.")
-    else:
-        review.delete()
-        messages.success(request, "Your review has been deleted.")
-
-    url = reverse("course_detail", kwargs={"slug": slug})
-    return redirect(f"{url}#course_reviews")
-
-
-def course_detail(request, slug):
-    course = get_object_or_404(Course, slug=slug)
-    sessions = course.sessions.all().order_by("start_time")
-    now = timezone.now()
-    is_teacher = request.user == course.teacher
-    completed_sessions = []
-    # Check if user is the teacher of this course
-
-    # Get enrollment if user is authenticated
-    enrollment = None
-    is_enrolled = False
-    if request.user.is_authenticated:
-        enrollment = Enrollment.objects.filter(course=course, student=request.user, status="approved").first()
-        is_enrolled = enrollment is not None
-        if enrollment:
-            # Get completed sessions through SessionAttendance
-            completed_sessions = SessionAttendance.objects.filter(
-                student=request.user, session__course=course, status="completed"
-            ).values_list("session__id", flat=True)
-            completed_sessions = course.sessions.filter(id__in=completed_sessions)
-
-    # Get attendance data for all enrolled students
-    student_attendance = {}
-    total_sessions = sessions.count()
-
-    if is_teacher or is_enrolled:
-        for enroll in course.enrollments.all():
-            attended_sessions = SessionAttendance.objects.filter(
-                student=enroll.student, session__course=course, status__in=["present", "late"]
-            ).count()
-            student_attendance[enroll.student.id] = {"attended": attended_sessions, "total": total_sessions}
-
-    # Mark past sessions as completed for display
-    past_sessions = sessions.filter(end_time__lt=now)
-    future_sessions = sessions.filter(end_time__gte=now)
-    sessions = list(future_sessions) + list(past_sessions)  # Show future sessions first
-
-    # Calendar data
-    today = timezone.now().date()
-
-    # Get the requested month from query parameters, default to current month
-    try:
-        year = int(request.GET.get("year", today.year))
-        month = int(request.GET.get("month", today.month))
-        current_month = today.replace(year=year, month=month, day=1)
-    except (ValueError, TypeError):
-        current_month = today.replace(day=1)
-
-    # Calculate previous and next month
-    if current_month.month == 1:
-        prev_month = current_month.replace(year=current_month.year - 1, month=12)
-    else:
-        prev_month = current_month.replace(month=current_month.month - 1)
-
-    if current_month.month == 12:
-        next_month = current_month.replace(year=current_month.year + 1, month=1)
-    else:
-        next_month = current_month.replace(month=current_month.month + 1)
-
-    # Get the calendar for current month
-    cal = calendar.monthcalendar(current_month.year, current_month.month)
-
-    # Get all session dates for this course in current month
-    session_dates = set(
-        session.start_time.date()
-        for session in sessions
-        if session.start_time.year == current_month.year and session.start_time.month == current_month.month
-    )
-
-    # Prepare calendar weeks data
-    calendar_weeks = []
-    for week in cal:
-        calendar_week = []
-        for day in week:
-            if day == 0:
-                calendar_week.append({"date": None, "in_month": False, "has_session": False})
-            else:
-                date = current_month.replace(day=day)
-                calendar_week.append({"date": date, "in_month": True, "has_session": date in session_dates})
-        calendar_weeks.append(calendar_week)
-
-    # Check if the current user has already reviewed this course
-    user_review = None
-    if request.user.is_authenticated:
-        user_review = Review.objects.filter(student=request.user, course=course).first()
-
-    # Get all reviews That not featured for this course
-    reviews = course.reviews.filter(is_featured=False).order_by("-created_at")
-
-    # Get the featured review
-    featured_review = Review.objects.filter(is_featured=True, course=course)
-
-    # Get all reviews sum
-    reviews_num = reviews.count() + featured_review.count()
-
-    # Calculate rating distribution for visualization
-    rating_counts = Review.objects.filter(course=course).values("rating").annotate(count=Count("id"))
-    rating_distribution = {1: 0, 2: 0, 3: 0, 4: 0, 5: 0}
-    for item in rating_counts:
-        rating_distribution[item["rating"]] = item["count"]
-
-    # Get next session for waiting room functionality
-    next_session = None
-    user_in_session_waiting_room = False
-
-    if request.user.is_authenticated:
-        # Get the next upcoming session for this course
-        next_session = course.sessions.filter(start_time__gt=timezone.now()).order_by("start_time").first()
-
-        # Check if user is in the session waiting room
-        try:
-            session_waiting_room = WaitingRoom.objects.get(course=course, status="open")
-            user_in_session_waiting_room = request.user in session_waiting_room.participants.all()
-        except WaitingRoom.DoesNotExist:
-            user_in_session_waiting_room = False
-
-    # Build the absolute discount URL using the discount view's URL name.
-    from urllib.parse import urlencode
-
-    discount_relative = reverse("apply_discount_via_referrer")
-    discount_params = urlencode({"course_id": course.id})
-    discount_url = request.build_absolute_uri(f"{discount_relative}?{discount_params}")
-
-    # Get active virtual classroom for the course
-    virtual_classroom = course.virtual_classrooms.filter(is_active=True).first()
-
-    context = {
-        "course": course,
-        "sessions": sessions,
-        "now": now,
-        "today": today,
-        "is_teacher": is_teacher,
-        "is_enrolled": is_enrolled,
-        "enrollment": enrollment,
-        "completed_sessions": completed_sessions,
-        "calendar_weeks": calendar_weeks,
-        "current_month": current_month,
-        "prev_month": prev_month,
-        "next_month": next_month,
-        "student_attendance": student_attendance,
-        "completed_enrollment_count": course.enrollments.filter(status="completed").count(),
-        "in_progress_enrollment_count": course.enrollments.filter(status="in_progress").count(),
-        "featured_review": featured_review,
-        "reviews": reviews,
-        "user_review": user_review,
-        "rating_distribution": rating_distribution,
-        "reviews_num": reviews_num,
-        "discount_url": discount_url,
-        "virtual_classroom": virtual_classroom,
-        "next_session": next_session,
-        "user_in_session_waiting_room": user_in_session_waiting_room,
-    }
-
-    return render(request, "courses/detail.html", context)
-
-
-@login_required
-def enroll_course(request, course_slug):
-    """Enroll in a course and handle referral rewards if applicable."""
-    course = get_object_or_404(Course, slug=course_slug)
-
-    # Check if user is already enrolled
-    if request.user.enrollments.filter(course=course).exists():
-        messages.warning(request, "You are already enrolled in this course.")
-        return redirect("course_detail", slug=course_slug)
-
-    # Check if course is full
-    if course.max_students and course.enrollments.count() >= course.max_students:
-        messages.error(request, "This course is full.")
-        return redirect("course_detail", slug=course_slug)
-
-    # Check if this is the user's first enrollment and if they were referred
-    if not Enrollment.objects.filter(student=request.user).exists():
-        if hasattr(request.user.profile, "referred_by") and request.user.profile.referred_by:
-            referrer = request.user.profile.referred_by
-            if not referrer.is_teacher:  # Regular users get reward on first course enrollment
-                referrer.add_referral_earnings(5)
-                send_referral_reward_email(referrer.user, request.user, 5, "enrollment")
-
-    # For free courses, create approved enrollment immediately
-    if course.price == 0:
-        enrollment = Enrollment.objects.create(student=request.user, course=course, status="approved")
-        # Send notifications for free courses
-        send_enrollment_confirmation(enrollment)
-        notify_teacher_new_enrollment(enrollment)
-        messages.success(request, "You have successfully enrolled in this free course.")
-        return redirect("course_detail", slug=course_slug)
-    else:
-        # For paid courses, create pending enrollment
-        enrollment = Enrollment.objects.create(student=request.user, course=course, status="pending")
-        messages.info(request, "Please complete the payment process to enroll in this course.")
-        return redirect("course_detail", slug=course_slug)
-
-
-@login_required
-def add_session(request, slug):
-    course = Course.objects.get(slug=slug)
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can add sessions!")
-        return redirect("course_detail", slug=slug)
-
-    if request.method == "POST":
-        form = SessionForm(request.POST)
-        if form.is_valid():
-            session = form.save(commit=False)
-            session.course = course
-            session.save()
-            # Send session notifications to enrolled students
-            notify_session_reminder(session)
-            messages.success(request, "Session added successfully!")
-            return redirect("course_detail", slug=slug)
-    else:
-        form = SessionForm()
-
-    return render(request, "courses/session_form.html", {"form": form, "course": course, "is_edit": False})
-
-
-@login_required
-def add_review(request, slug):
-    course = Course.objects.get(slug=slug)
-    student = request.user
-
-    if not request.user.enrollments.filter(course=course).exists():
-        messages.error(request, "Only enrolled students can review the course!")
-        return redirect("course_detail", slug=slug)
-
-    if request.method == "POST":
-        form = ReviewForm(request.POST)
-        if form.is_valid():
-            if Review.objects.filter(student=student, course=course).exists():
-                messages.error(request, "You have already reviewed this course.")
-                return redirect("course_detail", slug=slug)
-            review = form.save(commit=False)
-            review.student = student
-            review.course = course
-            review.save()
-            messages.success(request, "Review added successfully!")
-            url = reverse("course_detail", kwargs={"slug": slug})
-            return redirect(f"{url}#course_reviews")
-    else:
-        form = ReviewForm()
-
-    return render(request, "courses/edit_or_add_review.html", {"form": form, "course": course, "action": "Add"})
-
-
-@login_required
-def delete_course(request, slug):
-    """Handle course deletion, including image deletion."""
-    course = get_object_or_404(Course, slug=slug)
-
-    # Ensure only the course teacher can delete the course
-    if request.user != course.teacher:
-        messages.error(request, "You are not authorized to delete this course.")
-        return redirect("course_detail", slug=slug)
-
-    if request.method == "POST":
-
-        # Delete the course --> this automatically deletes the image too
-        course.delete()
-        messages.success(request, "Course deleted successfully!")
-        return redirect("profile")  # Redirect to the profile page or another success page
-
-    return render(request, "courses/delete_confirm.html", {"course": course})
-
-
-@csrf_exempt
-def github_update(request):
-    """GitHub webhook endpoint to trigger a lightweight deploy.
-
-    Hardening applied:
-    - Require POST.
-    - Validate X-Hub-Signature-256 using shared secret env var GITHUB_WEBHOOK_SECRET.
-    - Ignore unsupported events (only push by default).
-    - Run a safe pull + dependency install + migrate + collectstatic via a minimal bash snippet.
-    - Send concise status updates to Slack; avoid leaking secrets.
-
-    NOTE: Full provisioning (packages, DB grants, etc.) still belongs to Ansible.
-    This endpoint just brings the already‑provisioned instance up to latest commit.
-    """
-    if request.method != "POST":
-        return HttpResponseBadRequest("POST required")
-
-    secret = getattr(settings, "GITHUB_WEBHOOK_SECRET", None)
-    signature = request.META.get("HTTP_X_HUB_SIGNATURE_256")
-    body = request.body
-
-    if secret:
-        import hashlib
-        import hmac
-
-        expected = "sha256=" + hmac.new(secret.encode(), body, hashlib.sha256).hexdigest()
-        if not signature or not hmac.compare_digest(expected, signature):
-            send_slack_message("GitHub webhook signature mismatch")
-            return HttpResponseForbidden("Invalid signature")
-    else:
-        # If no secret configured, refuse (better to explicitly set one)
-        return HttpResponseForbidden("Webhook secret not configured")
-
-    event = request.META.get("HTTP_X_GITHUB_EVENT", "")
-    if event not in {"push"}:
-        return HttpResponse("Ignored event", status=202)
-
-    repo_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-    venv_python = os.path.join(repo_dir, "venv", "bin", "python")
-    venv_pip = os.path.join(repo_dir, "venv", "bin", "pip")
-    log_lines = []
-
-    # Resolve git binary explicitly since systemd service Environment may override PATH.
-    import shutil
-
-    git_bin = shutil.which("git") or "/usr/bin/git"
-    if not os.path.exists(git_bin):
-        msg = f"Git binary not found at resolved path: {git_bin}. Aborting lightweight deploy."
-        send_slack_message(msg)
-        return HttpResponse(status=500, content=msg)
-
-    def run_cmd(cmd):
-        proc = subprocess.run(cmd, cwd=repo_dir, capture_output=True, text=True)
-        summary = f"$ {' '.join(cmd)}\nrc={proc.returncode}\nstdout={proc.stdout[-400:]}\nstderr={proc.stderr[-400:]}"
-        log_lines.append(summary)
-        return proc.returncode == 0
-
-    poetry_bin = os.path.join(repo_dir, "venv", "bin", "poetry")
-    steps = [
-        [git_bin, "fetch", "--all", "--prune"],
-        [git_bin, "reset", "--hard", "origin/main"],
-        [venv_pip, "install", "--upgrade", "pip", "wheel"],
-        [venv_pip, "install", "poetry==1.8.3"],
-        [poetry_bin, "config", "virtualenvs.create", "false", "--local"],
-        [poetry_bin, "install", "--only", "main", "--no-interaction", "--no-ansi"],
-        [venv_python, "manage.py", "migrate", "--noinput"],
-        [venv_python, "manage.py", "collectstatic", "--noinput"],
-    ]
-
-    ok = True
-    for step in steps:
-        try:
-            if not run_cmd(step):
-                ok = False
-                break
-        except FileNotFoundError as fe:
-            # Capture explicit binary not found errors, send Slack, abort early.
-            err_msg = f"Webhook deploy step failed (missing binary): {fe}"
-            log_lines.append(err_msg)
-            send_slack_message(err_msg)
-            ok = False
-            break
-
-    # Always attempt a reload so code changes take effect (application systemd unit)
-    subprocess.run(["/bin/systemctl", "restart", "education-website"], capture_output=True)
-
-    # Slack summary (truncate to avoid long messages)
-    slack_msg = (
-        ("Deploy success" if ok else "Deploy FAILED")
-        + " (github webhook)\n"
-        + "\n---\n"
-        + "\n---\n".join(line[:600] for line in log_lines[:4])
-    )
-    send_slack_message(slack_msg[:3500])
-
-    if ok:
-        return HttpResponse("OK")
-    return HttpResponse(status=500, content="Deploy failed; see logs")
-
-
-def send_slack_message(message):
-    webhook_url = os.getenv("SLACK_WEBHOOK_URL")
-    if not webhook_url:
-        print("Warning: SLACK_WEBHOOK_URL not configured")
-        return
-
-    payload = {"text": f"```{message}```"}
-    try:
-        response = requests.post(webhook_url, json=payload)
-        response.raise_for_status()  # Raise exception for bad status codes
-    except Exception:
-        logger.error("Failed to send Slack message", exc_info=True)
-
-
-def get_wsgi_last_modified_time():
-    try:
-        return time.ctime(os.path.getmtime(settings.PA_WSGI))
-    except Exception:
-        return "Unknown"
-
-
-def subjects(request):
-    return render(request, "subjects.html")
-
-
-def about(request):
-    return render(request, "about.html")
-
-
-def waiting_rooms(request):
-    # Get open waiting rooms
-    open_rooms = WaitingRoom.objects.filter(status="open").order_by("-created_at")
-
-    # Get fulfilled waiting rooms (ones that have associated courses)
-    fulfilled_rooms = WaitingRoom.objects.filter(status="fulfilled").order_by("-created_at")
-
-    # Get rooms created by the user
-    user_created_rooms = (
-        WaitingRoom.objects.filter(creator=request.user).order_by("-created_at")
-        if request.user.is_authenticated
-        else []
-    )
-
-    # Get rooms the user has joined
-    user_joined_rooms = (
-        WaitingRoom.objects.filter(participants=request.user).order_by("-created_at")
-        if request.user.is_authenticated
-        else []
-    )
-
-    # Get topics for each room
-    room_topics = {}
-    all_rooms = list(open_rooms) + list(fulfilled_rooms) + list(user_created_rooms) + list(user_joined_rooms)
-    for room in all_rooms:
-        # Split topics string into a list
-        room_topics[room.id] = [t.strip() for t in room.topics.split(",")] if room.topics else []
-
-    context = {
-        "open_rooms": open_rooms,
-        "fulfilled_rooms": fulfilled_rooms,
-        "user_created_rooms": user_created_rooms,
-        "user_joined_rooms": user_joined_rooms,
-        "room_topics": room_topics,
-    }
-
-    return render(request, "waiting_rooms.html", context)
-
-
-def learn(request):
-    if request.method == "POST":
-        form = LearnForm(request.POST)
-        if form.is_valid():
-            # Create waiting room
-            waiting_room = form.save(commit=False)
-            waiting_room.status = "open"  # Set initial status
-            waiting_room.creator = request.user  # Set the creator
-
-            # Get topics from form and save as comma-separated string
-            topics = form.cleaned_data.get("topics", "")
-            if isinstance(topics, list):
-                topics = ", ".join(topics)
-            waiting_room.topics = topics
-
-            waiting_room.save()
-
-            # Redirect to waiting rooms page
-            return redirect("waiting_rooms")
-
-            # Get form data
-            title = form.cleaned_data["title"]
-            description = form.cleaned_data["description"]
-            subject = form.cleaned_data["subject"]
-            topics = form.cleaned_data["topics"]
-
-            # Prepare email content
-            email_subject = f"New Learning Request: {title}"
-            email_body = render_to_string(
-                "emails/learn_interest.html",
-                {
-                    "title": title,
-                    "description": description,
-                    "subject": subject,
-                    "topics": topics,
-                    "user": request.user.username,
-                    "waiting_room_id": waiting_room.id,
-                },
-            )
-
-            # Send email
-            try:
-                send_mail(
-                    email_subject,
-                    email_body,
-                    settings.DEFAULT_FROM_EMAIL,
-                    [settings.DEFAULT_FROM_EMAIL],
-                    html_message=email_body,
-                    fail_silently=False,
-                )
-                messages.success(
-                    request,
-                    "Thank you for your learning request!",
-                )
-                return redirect("waiting_rooms")
-            except Exception:
-                logger = logging.getLogger(__name__)
-                logger.exception("Error sending email")
-                messages.error(request, "Sorry, there was an error sending your inquiry. Please try again later.")
-    else:
-        initial_data = {}
-
-        # Handle query parameters
-        query = request.GET.get("query", "")
-        subject_param = request.GET.get("subject", "")
-        level = request.GET.get("level", "")
-
-        # Try to match subject
-        if subject_param:
-            try:
-                subject = Subject.objects.get(name=subject_param)
-                initial_data["subject"] = subject.id
-            except Subject.DoesNotExist:
-                # Optionally, you could add the subject name to the description
-                initial_data["description"] = f"Looking for courses in {subject_param}"
-
-        # If you want to include other parameters in the description
-        if query or level:
-            title_parts = []
-            description_parts = []
-            if query:
-                title_parts.append(f"{query}")
-            if level:
-                description_parts.append(f"Level: {level}")
-
-            if "description" not in initial_data:
-                initial_data["title"] = " | ".join(title_parts)
-            else:
-                initial_data["description"] += " | " + " | ".join(description_parts)
-
-        form = LearnForm(initial=initial_data)
-        return render(request, "learn.html", {"form": form})
-
-
-def teach(request):
-    """Handles the course creation process for both authenticated and unauthenticated users."""
-    if request.method == "POST":
-        form = TeachForm(request.POST, request.FILES, user=request.user)
-        if form.is_valid():
-            # Extract cleaned data
-            email = form.cleaned_data.get("email", None)
-            if email is None and request.user.is_authenticated:
-                email = request.user.email
-            course_title = form.cleaned_data["course_title"]
-            course_description = form.cleaned_data["course_description"]
-            course_image = form.cleaned_data.get("course_image")
-            preferred_session_times = form.cleaned_data["preferred_session_times"]
-            _ = form.cleaned_data.get("flexible_timing", False)
-
-            # Determine the user for the course
-            user = None
-            is_new_user = False
-
-            if request.user.is_authenticated:
-                # For authenticated users, always use the logged-in user
-                user = request.user
-
-                # Backend validation: Check for duplicate course titles for the logged-in user
-                if Course.objects.filter(title__iexact=course_title, teacher=user).exists():
-                    form.add_error("course_title", "You already have a course with this title.")
-                    return render(request, "teach.html", {"form": form})
-            else:
-                # For unauthenticated users, check if the email exists or create a new user
-                try:
-                    user = User.objects.get(email=email)
-                    # User exists but isn't logged in; check if email is verified
-                    email_address = EmailAddress.objects.filter(user=user, email=email, primary=True).first()
-                    if email_address and email_address.verified:
-                        messages.info(
-                            request,
-                            "An account with this email exists. Please login to finalize your course.",
-                        )
-                    else:
-                        # Email not verified, resend verification email
-                        send_email_confirmation(request, user, signup=False)
-                        messages.info(
-                            request,
-                            "An account with this email exists. Please verify your email to continue.",
-                        )
-                except User.DoesNotExist:
-                    # Create a new user account
-                    with transaction.atomic():
-                        # Generate a unique username
-                        email_prefix = email.split("@")[0]
-                        username = email_prefix
-                        counter = 1
-                        while User.objects.filter(username=username).exists():
-                            username = f"{email_prefix}_{get_random_string(4)}_{counter}"
-                            counter += 1
-
-                        temp_password = get_random_string(length=8)
-
-                        # Create user with temporary password
-                        user = User.objects.create_user(username=username, email=email, password=temp_password)
-
-                        # Update profile to be a teacher
-                        profile, created = Profile.objects.get_or_create(user=user)
-                        profile.is_teacher = True
-                        profile.save()
-
-                        # Add email address for allauth verification
-                        EmailAddress.objects.create(user=user, email=email, primary=True, verified=False)
-
-                        # Send verification email via allauth
-                        send_email_confirmation(request, user, signup=True)
-                        # Send welcome email with username, email, and temp password
-                        try:
-                            send_welcome_teach_course_email(request, user, temp_password)
-                        except Exception:
-                            messages.error(request, "Failed to send welcome email. Please try again.")
-                            return render(request, "teach.html", {"form": form})
-
-                        is_new_user = True
-
-                # Backend validation: Check for duplicate course titles for unauthenticated users
-                if Course.objects.filter(title__iexact=course_title, teacher=user).exists():
-                    email_address = EmailAddress.objects.filter(user=user, email=email, primary=True).first()
-                    if email_address and not email_address.verified:
-                        # If the user is unverified, delete the existing draft and allow a new one
-                        Course.objects.filter(title__iexact=course_title, teacher=user).delete()
-                    else:
-                        form.add_error("course_title", "You already have a course with this title.")
-                        return render(request, "teach.html", {"form": form})
-
-            # Create a draft course
-            course = Course.objects.create(
-                title=course_title,
-                description=course_description,
-                teacher=user,
-                price=0,
-                max_students=12,
-                status="draft",
-                subject=Subject.objects.first() or Subject.objects.create(name="General"),
-                level="beginner",
-            )
-
-            # Handle course image if uploaded
-            if course_image:
-                course.image = course_image
-                course.save()
-
-            # Create initial session if preferred time provided
-            if preferred_session_times:
-                Session.objects.create(
-                    course=course,
-                    title=f"{course_title} - Session 1",
-                    description="First session of the course",
-                    start_time=preferred_session_times,
-                    end_time=preferred_session_times + timezone.timedelta(hours=1),
-                    is_virtual=True,
-                )
-
-            # Handle redirection based on authentication status
-            if request.user.is_authenticated:
-                # If authenticated, mark as teacher and redirect to course setup
-                request.user.profile.is_teacher = True
-                request.user.profile.save()
-                messages.success(
-                    request, f"Welcome! Your course '{course_title}' has been created. Please complete your setup."
-                )
-                return redirect("course_detail", slug=course.slug)
-            else:
-                # Store course primary key in session for post-verification redirect
-                request.session["pending_course_id"] = course.pk
-                if is_new_user:
-                    messages.success(
-                        request,
-                        "Your course has been created! "
-                        "Please check your email for your username, password, and verification link to continue.",
-                    )
-                    return redirect("account_email_verification_sent")
-                else:
-                    # For existing users, redirect to login page
-                    return redirect("account_login")
-
-    else:
-        initial_data = {}
-        if request.GET.get("subject"):
-            initial_data["course_title"] = request.GET.get("subject")
-        form = TeachForm(initial=initial_data, user=request.user)
-
-    return render(request, "teach.html", {"form": form})
-
-
-def send_welcome_teach_course_email(request, user, temp_password):
-    """Send welcome email with account and password setup instructions."""
-    reset_url = request.build_absolute_uri(reverse("account_reset_password"))
-
-    email_context = {"user": user, "reset_url": reset_url, "temp_password": temp_password}
-
-    html_message = render_to_string("emails/welcome_teach_course.html", email_context)
-    text_message = render_to_string("emails/welcome_teach_course.txt", email_context)
-
-    send_mail(
-        subject="Welcome to Your New Teaching Account.",
-        message=text_message,
-        html_message=html_message,
-        from_email=settings.DEFAULT_FROM_EMAIL,
-        recipient_list=[user.email],
-        fail_silently=False,
-    )
-
-
-def course_search(request):
-    query = request.GET.get("q", "")
-    subject = request.GET.get("subject", "")
-    level = request.GET.get("level", "")
-    min_price = request.GET.get("min_price", "")
-    max_price = request.GET.get("max_price", "")
-    sort_by = request.GET.get("sort", "-created_at")
-
-    courses = Course.objects.filter(status="published")
-
-    # Apply filters
-    if query:
-        courses = courses.filter(
-            Q(title__icontains=query)
-            | Q(description__icontains=query)
-            | Q(tags__icontains=query)
-            | Q(learning_objectives__icontains=query)
-            | Q(prerequisites__icontains=query)
-            | Q(teacher__username__icontains=query)
-            | Q(teacher__first_name__icontains=query)
-            | Q(teacher__last_name__icontains=query)
-            | Q(teacher__profile__expertise__icontains=query)
-        )
-
-    if subject:
-        # Handle subject filtering based on whether it's an ID (number) or a string (slug/name)
-        try:
-            # Check if subject is an integer ID
-            subject_id = int(subject)
-            courses = courses.filter(subject_id=subject_id)
-        except ValueError:
-            # If not an integer, treat as a slug or name
-            courses = courses.filter(Q(subject__slug=subject) | Q(subject__name__iexact=subject))
-
-    if level:
-        courses = courses.filter(level=level)
-
-    if min_price:
-        try:
-            min_price = float(min_price)
-            courses = courses.filter(price__gte=min_price)
-        except ValueError:
-            pass
-
-    if max_price:
-        try:
-            max_price = float(max_price)
-            courses = courses.filter(price__lte=max_price)
-        except ValueError:
-            pass
-
-    # Annotate with average rating for sorting
-    courses = courses.annotate(
-        avg_rating=Avg("reviews__rating"),
-        total_students=Count("enrollments", filter=Q(enrollments__status="approved")),
-    )
-
-    # Apply sorting
-    if sort_by == "price":
-        courses = courses.order_by("price", "-avg_rating")
-    elif sort_by == "-price":
-        courses = courses.order_by("-price", "-avg_rating")
-    elif sort_by == "title":
-        courses = courses.order_by("title")
-    elif sort_by == "rating":
-        courses = courses.order_by("-avg_rating", "-total_students")
-    else:  # Default to newest
-        courses = courses.order_by("-created_at")
-
-    # Get total count before pagination
-    total_results = courses.count()
-
-    # Log the search (only if query is not blank or filters are applied)
-    if (query and query.strip()) or subject or level or min_price or max_price:
-        filters = {
-            "subject": subject,
-            "level": level,
-            "min_price": min_price,
-            "max_price": max_price,
-            "sort_by": sort_by,
-        }
-        SearchLog.objects.create(
-            query=query.strip() if query else "",
-            results_count=total_results,
-            user=request.user if request.user.is_authenticated else None,
-            filters_applied=filters,
-            search_type="course",
-        )
-
-    # Pagination
-    paginator = Paginator(courses, 12)  # Show 12 courses per page
-    page_number = request.GET.get("page", 1)
-    page_obj = paginator.get_page(page_number)
-    is_teacher = getattr(getattr(request.user, "profile", None), "is_teacher", False)
-
-    # initialize the user courses if founded
-    user_courses = set()
-
-    # Get authenticated users courses
-    if request.user.is_authenticated:
-        if request.user.profile.is_teacher:
-            teacher_courses = list(Course.objects.filter(teacher=request.user))
-            # Create a set of titles
-            user_courses = {course.title for course in teacher_courses}
-        else:
-            enrollments = Enrollment.objects.filter(student=request.user).select_related("course")
-            # Create a set of titles
-            user_courses = {course.course.title for course in enrollments}
-
-    # Get dynamic subject choices from courses that are published
-    available_subjects = (
-        Subject.objects.filter(courses__status="published")
-        .distinct()
-        .order_by("order", "name")
-        .values_list("slug", "name")
-    )
-
-    context = {
-        "page_obj": page_obj,
-        "query": query,
-        "subject": subject,
-        "level": level,
-        "min_price": min_price,
-        "max_price": max_price,
-        "sort_by": sort_by,
-        "subject_choices": list(available_subjects),
-        "level_choices": Course._meta.get_field("level").choices,
-        "total_results": total_results,
-        "is_teacher": is_teacher,
-        "user_courses": user_courses,
-    }
-
-    return render(request, "courses/search.html", context)
-
-
-@login_required
-def create_payment_intent(request, slug):
-    """Create a payment intent for Stripe."""
-    course = get_object_or_404(Course, slug=slug)
-
-    # Prevent creating payment intents for free courses
-    if course.price == 0:
-        # Find the enrollment and update its status to approved if it's pending
-        enrollment = get_object_or_404(Enrollment, student=request.user, course=course)
-        if enrollment.status == "pending":
-            enrollment.status = "approved"
-            enrollment.save()
-
-            # Send notifications
-            send_enrollment_confirmation(enrollment)
-            notify_teacher_new_enrollment(enrollment)
-
-        return JsonResponse({"free_course": True, "message": "Enrollment approved for free course"})
-
-    # Ensure user has a pending enrollment
-    enrollment = get_object_or_404(Enrollment, student=request.user, course=course, status="pending")
-
-    # Validate price is greater than zero for Stripe
-    if course.price <= 0:
-        enrollment.status = "approved"
-        enrollment.save()
-
-        # Send notifications
-        send_enrollment_confirmation(enrollment)
-        notify_teacher_new_enrollment(enrollment)
-
-        return JsonResponse({"free_course": True, "message": "Enrollment approved for free course"})
-
-    try:
-        # Create a PaymentIntent with the order amount and currency
-        intent = stripe.PaymentIntent.create(
-            amount=int(course.price * 100),  # Convert to cents
-            currency="usd",
-            metadata={
-                "course_id": course.id,
-                "user_id": request.user.id,
-            },
-        )
-        return JsonResponse({"clientSecret": intent.client_secret})
-    except stripe.error.StripeError:
-        logger.error("Stripe error occurred", exc_info=True)
-        return JsonResponse({"error": "Payment processing error. Please try again."}, status=400)
-    except Exception:
-        logger.error("Unexpected error in payment intent creation", exc_info=True)
-        return JsonResponse({"error": "An internal error occurred. Please try again."}, status=500)
-
-
-@csrf_exempt
-def stripe_webhook(request):
-    """Stripe webhook endpoint for handling payment events."""
-    payload = request.body
-    sig_header = request.META.get("HTTP_STRIPE_SIGNATURE")
-
-    try:
-        event = stripe.Webhook.construct_event(payload, sig_header, settings.STRIPE_WEBHOOK_SECRET)
-    except ValueError:
-        # Invalid payload
-        return HttpResponse(status=400)
-    except stripe.error.SignatureVerificationError:
-        # Invalid signature
-        return HttpResponse(status=400)
-
-    if event.type == "payment_intent.succeeded":
-        payment_intent = event.data.object
-        handle_successful_payment(payment_intent)
-    elif event.type == "payment_intent.payment_failed":
-        payment_intent = event.data.object
-        handle_failed_payment(payment_intent)
-
-    return HttpResponse(status=200)
-
-
-def handle_successful_payment(payment_intent):
-    """Handle successful payment by enrolling the user in the course."""
-    # Get metadata from the payment intent
-    course_id = payment_intent.metadata.get("course_id")
-    user_id = payment_intent.metadata.get("user_id")
-
-    # Create enrollment and payment records
-    course = Course.objects.get(id=course_id)
-    user = User.objects.get(id=user_id)
-
-    # Create enrollment with pending status
-    enrollment = Enrollment.objects.get_or_create(student=user, course=course, defaults={"status": "pending"})[0]
-
-    # Update status to approved after successful payment
-    enrollment.status = "approved"
-    enrollment.save()
-
-    # Create a payment record for tracking teacher earnings
-    # Convert amount from cents to dollars
-    amount = Decimal(str(payment_intent.amount)) / 100
-    Payment.objects.create(
-        enrollment=enrollment,
-        amount=amount,
-        currency=payment_intent.currency.upper(),
-        stripe_payment_intent_id=payment_intent.id,
-        status="completed",
-    )
-
-    # Send notifications
-    send_enrollment_confirmation(enrollment)
-    notify_teacher_new_enrollment(enrollment)
-
-
-def handle_failed_payment(payment_intent):
-    """Handle failed payment."""
-    course_id = payment_intent.metadata.get("course_id")
-    user_id = payment_intent.metadata.get("user_id")
-
-    try:
-        course = Course.objects.get(id=course_id)
-        user = User.objects.get(id=user_id)
-        enrollment = Enrollment.objects.get(student=user, course=course)
-        enrollment.status = "pending"
-        enrollment.save()
-    except (Course.DoesNotExist, User.DoesNotExist, Enrollment.DoesNotExist):
-        pass  # Log error or handle appropriately
-
-
-@login_required
-def update_course(request, slug):
-    course = get_object_or_404(Course, slug=slug)
-    if request.user != course.teacher:
-        return HttpResponseForbidden()
-
-    if request.method == "POST":
-        form = CourseForm(request.POST, request.FILES, instance=course)
-        if form.is_valid():
-            form.save()
-            messages.success(request, "Course updated successfully!")
-            return redirect("course_detail", slug=course.slug)
-    else:
-        form = CourseForm(instance=course)
-
-    return render(request, "courses/update.html", {"form": form, "course": course})
-
-
-@login_required
-def mark_session_attendance(request, session_id):
-    session = Session.objects.get(id=session_id)
-    if request.user != session.course.teacher:
-        messages.error(request, "Only the course teacher can mark attendance!")
-        return redirect("course_detail", slug=session.course.slug)
-
-    if request.method == "POST":
-        for student_id, status in request.POST.items():
-            if student_id.startswith("student_"):
-                student_id = student_id.replace("student_", "")
-                student = User.objects.get(id=student_id)
-                attendance, created = SessionAttendance.objects.update_or_create(
-                    session=session, student=student, defaults={"status": status}
-                )
-        messages.success(request, "Attendance marked successfully!")
-        return redirect("course_detail", slug=session.course.slug)
-
-    enrollments = session.course.enrollments.filter(status="approved")
-    attendances = {att.student_id: att.status for att in session.attendances.all()}
-
-    context = {
-        "session": session,
-        "enrollments": enrollments,
-        "attendances": attendances,
-    }
-    return render(request, "courses/mark_attendance.html", context)
-
-
-@login_required
-def mark_session_completed(request, session_id):
-    session = Session.objects.get(id=session_id)
-    enrollment = request.user.enrollments.get(course=session.course)
-
-    if enrollment.status != "approved":
-        messages.error(request, "You must be enrolled in the course to mark sessions as completed!")
-        return redirect("course_detail", slug=session.course.slug)
-
-    progress, created = CourseProgress.objects.get_or_create(enrollment=enrollment)
-    progress.completed_sessions.add(session)
-
-    # Check for achievements
-    if progress.completion_percentage == 100:
-        Achievement.objects.get_or_create(
-            student=request.user,
-            course=session.course,
-            achievement_type="completion",
-            defaults={
-                "title": "Course Completed!",
-                "description": f"Completed all sessions in {session.course.title}",
-            },
-        )
-
-    if progress.attendance_rate == 100:
-        Achievement.objects.get_or_create(
-            student=request.user,
-            course=session.course,
-            achievement_type="attendance",
-            defaults={
-                "title": "Perfect Attendance!",
-                "description": f"Attended all sessions in {session.course.title}",
-            },
-        )
-
-    messages.success(request, "Session marked as completed!")
-    return redirect("course_detail", slug=session.course.slug)
-
-
-@login_required
-def award_achievement(request):
-    try:
-        profile = request.user.profile
-        if not profile.is_teacher:
-            messages.error(request, "You do not have permission to award achievements.")
-            return redirect("teacher_dashboard")
-    except Profile.DoesNotExist:
-        messages.error(request, "Profile not found.")
-        return redirect("teacher_dashboard")
-
-    if request.method == "POST":
-        form = AwardAchievementForm(request.POST, teacher=request.user)
-        if form.is_valid():
-            Achievement.objects.create(
-                student=form.cleaned_data["student"],
-                course=form.cleaned_data["course"],
-                achievement_type=form.cleaned_data["achievement_type"],
-                title=form.cleaned_data["title"],
-                description=form.cleaned_data["description"],
-                badge_icon=form.cleaned_data["badge_icon"],
-            )
-            messages.success(
-                request,
-                f'Achievement "{form.cleaned_data["title"]}" awarded to {form.cleaned_data["student"].username}.',
-            )
-            return redirect("teacher_dashboard")
-        else:
-            # Show an error message if the form is invalid
-            messages.error(request, "There was an error in the form submission. Please check the form and try again.")
-    else:
-        form = AwardAchievementForm(teacher=request.user)
-    return render(request, "award_achievement.html", {"form": form})
-
-
-@login_required
-def student_progress(request, enrollment_id):
-    enrollment = Enrollment.objects.get(id=enrollment_id)
-
-    if request.user != enrollment.student and request.user != enrollment.course.teacher:
-        messages.error(request, "You don't have permission to view this progress!")
-        return redirect("course_detail", slug=enrollment.course.slug)
-
-    progress, created = CourseProgress.objects.get_or_create(enrollment=enrollment)
-    achievements = Achievement.objects.filter(student=enrollment.student, course=enrollment.course)
-
-    past_sessions = enrollment.course.sessions.filter(start_time__lt=timezone.now())
-    upcoming_sessions = enrollment.course.sessions.filter(start_time__gte=timezone.now())
-
-    context = {
-        "enrollment": enrollment,
-        "progress": progress,
-        "achievements": achievements,
-        "past_sessions": past_sessions,
-        "upcoming_sessions": upcoming_sessions,
-        "stripe_public_key": (
-            settings.STRIPE_PUBLISHABLE_KEY if enrollment.status == "pending" and enrollment.course.price > 0 else None
-        ),
-    }
-    return render(request, "courses/student_progress.html", context)
-
-
-@login_required
-def course_progress_overview(request, slug):
-    course = Course.objects.get(slug=slug)
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can view the progress overview!")
-        return redirect("course_detail", slug=slug)
-
-    enrollments = course.enrollments.filter(status="approved")
-    progress_data = []
-
-    for enrollment in enrollments:
-        progress, created = CourseProgress.objects.get_or_create(enrollment=enrollment)
-        attendance_data = (
-            SessionAttendance.objects.filter(student=enrollment.student, session__course=course)
-            .values("status")
-            .annotate(count=models.Count("status"))
-        )
-
-        progress_data.append(
-            {
-                "enrollment": enrollment,
-                "progress": progress,
-                "attendance": attendance_data,
-            }
-        )
-
-    context = {
-        "course": course,
-        "progress_data": progress_data,
-    }
-    return render(request, "courses/progress_overview.html", context)
-
-
-@login_required
-def upload_material(request, slug):
-    course = get_object_or_404(Course, slug=slug)
-    if request.user != course.teacher:
-        return HttpResponseForbidden("You are not authorized to upload materials for this course.")
-
-    if request.method == "POST":
-        form = CourseMaterialForm(request.POST, request.FILES, course=course)
-        if form.is_valid():
-            material = form.save(commit=False)
-            material.course = course
-            material.save()
-            messages.success(request, "Course material uploaded successfully!")
-            return redirect("course_detail", slug=course.slug)
-    else:
-        form = CourseMaterialForm(course=course)
-
-    return render(request, "courses/upload_material.html", {"form": form, "course": course})
-
-
-@login_required
-def delete_material(request, slug, material_id):
-    material = get_object_or_404(CourseMaterial, id=material_id, course__slug=slug)
-    if request.user != material.course.teacher:
-        return HttpResponseForbidden("You are not authorized to delete this material.")
-
-    if request.method == "POST":
-        material.delete()
-        messages.success(request, "Course material deleted successfully!")
-        return redirect("course_detail", slug=slug)
-
-    return render(request, "courses/delete_material_confirm.html", {"material": material})
-
-
-@login_required
-def download_material(request, slug, material_id):
-    material = get_object_or_404(CourseMaterial, id=material_id, course__slug=slug)
-    if not material.is_downloadable and request.user != material.course.teacher:
-        return HttpResponseForbidden("This material is not available for download.")
-
-    try:
-        return FileResponse(material.file, as_attachment=True)
-    except FileNotFoundError:
-        messages.error(request, "The requested file could not be found.")
-        return redirect("course_detail", slug=slug)
-
-
-@login_required
-@teacher_required
-def course_marketing(request, slug):
-    """View for managing course marketing and promotions."""
-    course = get_object_or_404(Course, slug=slug, teacher=request.user)
-
-    if request.method == "POST":
-        action = request.POST.get("action")
-
-        if action == "send_promotional_emails":
-            send_course_promotion_email(
-                course=course,
-                subject=f"New Course Recommendation: {course.title}",
-                template_name="course_promotion",
-            )
-            messages.success(request, "Promotional emails have been sent successfully.")
-
-        elif action == "generate_social_content":
-            social_content = generate_social_share_content(course)
-            return JsonResponse({"social_content": social_content})
-
-    # Get analytics and recommendations
-    analytics = get_course_analytics(course)
-    recommendations = get_promotion_recommendations(course)
-
-    context = {
-        "course": course,
-        "analytics": analytics,
-        "recommendations": recommendations,
-    }
-
-    return render(request, "courses/marketing.html", context)
-
-
-@login_required
-@teacher_required
-def course_analytics(request, slug):
-    """View for displaying detailed course analytics."""
-    course = get_object_or_404(Course, slug=slug, teacher=request.user)
-    analytics = get_course_analytics(course)
-
-    if request.headers.get("X-Requested-With") == "XMLHttpRequest":
-        return JsonResponse({"analytics": analytics})
-
-    context = {
-        "course": course,
-        "analytics": analytics,
-    }
-
-    return render(request, "courses/analytics.html", context)
-
-
-@login_required
-def calendar_feed(request):
-    """Generate and serve an iCal feed of the user's course sessions."""
-
-    response = HttpResponse(generate_ical_feed(request.user), content_type="text/calendar")
-    response["Content-Disposition"] = f'attachment; filename="{settings.SITE_NAME}-schedule.ics"'
-    return response
-
-
-@login_required
-def calendar_links(request, session_id):
-    """Get calendar links for a specific session."""
-
-    session = get_object_or_404(Session, id=session_id)
-
-    # Check if user has access to this session
-    if not (
-        request.user == session.course.teacher
-        or request.user.enrollments.filter(course=session.course, status="approved").exists()
-    ):
-        return HttpResponseForbidden("You don't have access to this session.")
-
-    links = {
-        "google": generate_google_calendar_link(session),
-        "outlook": generate_outlook_calendar_link(session),
-    }
-
-    if request.headers.get("X-Requested-With") == "XMLHttpRequest":
-        return JsonResponse({"links": links})
-
-    return render(
-        request,
-        "courses/calendar_links.html",
-        {
-            "session": session,
-            "calendar_links": links,
-        },
-    )
-
-
-def forum_categories(request):
-    """Display all forum categories."""
-    categories = ForumCategory.objects.all()
-    return render(request, "web/forum/categories.html", {"categories": categories})
-
-
-def forum_category(request, slug):
-    """Display topics in a specific category."""
-    category = get_object_or_404(ForumCategory, slug=slug)
-    topics = category.topics.all()
-    categories = ForumCategory.objects.all()
-    return render(
-        request, "web/forum/category.html", {"category": category, "topics": topics, "categories": categories}
-    )
-
-
-def forum_topic(request, category_slug, topic_id):
-    """Display a forum topic and its replies."""
-    topic = get_object_or_404(ForumTopic, id=topic_id, category__slug=category_slug)
-    categories = ForumCategory.objects.all()
-
-    # Get view count from WebRequest model
-    view_count = (
-        WebRequest.objects.filter(path=request.path).aggregate(total_views=models.Sum("count"))["total_views"] or 0
-    )
-    topic.views = view_count
-    topic.save()
-
-    # Handle POST requests for replies, voting, and deletion
-    if request.method == "POST":
-        action = request.POST.get("action")
-
-        if action == "add_reply" and request.user.is_authenticated:
-            content = request.POST.get("content")
-            if content:
-                ForumReply.objects.create(topic=topic, author=request.user, content=content)
-                messages.success(request, "Reply added successfully.")
-                return redirect("forum_topic", category_slug=category_slug, topic_id=topic_id)
-
-        elif action == "delete_reply" and request.user.is_authenticated:
-            reply_id = request.POST.get("reply_id")
-            reply = get_object_or_404(ForumReply, id=reply_id, author=request.user)
-            reply.delete()
-            messages.success(request, "Reply deleted successfully.")
-            return redirect("forum_topic", category_slug=category_slug, topic_id=topic_id)
-
-        elif action == "delete_topic" and request.user == topic.author:
-            topic.delete()
-            messages.success(request, "Topic deleted successfully.")
-            return redirect("forum_category", slug=category_slug)
-
-    # Fetch replies after POST handling
-    replies = topic.replies.select_related("author").order_by("created_at")
-
-    # Votes handling
-    if request.user.is_authenticated:
-        user_topic_vote = topic.user_vote(request.user)
-        user_reply_votes = {reply.id: reply.user_vote(request.user) for reply in replies}
-    else:
-        user_topic_vote = None
-        user_reply_votes = {}
-
-    return render(
-        request,
-        "web/forum/topic.html",
-        {
-            "topic": topic,
-            "replies": replies,
-            "categories": categories,
-            "user_topic_vote": user_topic_vote,
-            "user_reply_votes": user_reply_votes,
-        },
-    )
-
-
-@login_required
-def create_topic(request, category_slug):
-    """Create a new forum topic."""
-    category = get_object_or_404(ForumCategory, slug=category_slug)
-    categories = ForumCategory.objects.all()
-
-    if request.method == "POST":
-        form = ForumTopicForm(request.POST)
-        if form.is_valid():
-            topic = ForumTopic.objects.create(
-                category=category,
-                author=request.user,
-                title=form.cleaned_data["title"],
-                content=form.cleaned_data["content"],
-                github_issue_url=form.cleaned_data.get("github_issue_url", ""),
-                github_milestone_url=form.cleaned_data.get("github_milestone_url", ""),
-            )
-            messages.success(request, "Topic created successfully!")
-            return redirect("forum_topic", category_slug=category_slug, topic_id=topic.id)
-    else:
-        form = ForumTopicForm()
-
-    return render(
-        request, "web/forum/create_topic.html", {"category": category, "form": form, "categories": categories}
-    )
-
-
-@login_required
-def peer_connections(request):
-    """Display user's peer connections."""
-    sent_connections = request.user.sent_connections.all()
-    received_connections = request.user.received_connections.all()
-    return render(
-        request,
-        "web/peer/connections.html",
-        {
-            "sent_connections": sent_connections,
-            "received_connections": received_connections,
-        },
-    )
-
-
-@login_required
-def send_connection_request(request, user_id):
-    """Send a peer connection request."""
-    receiver = get_object_or_404(User, id=user_id)
-
-    if request.user == receiver:
-        messages.error(request, "You cannot connect with yourself!")
-        return redirect("peer_connections")
-
-    connection, created = PeerConnection.objects.get_or_create(
-        sender=request.user, receiver=receiver, defaults={"status": "pending"}
-    )
-
-    if created:
-        messages.success(request, f"Connection request sent to {receiver.username}!")
-    else:
-        messages.info(request, f"Connection request already sent to {receiver.username}.")
-
-    return redirect("peer_connections")
-
-
-@login_required
-def handle_connection_request(request, connection_id, action):
-    """Accept or reject a peer connection request."""
-    connection = get_object_or_404(PeerConnection, id=connection_id, receiver=request.user, status="pending")
-
-    if action == "accept":
-        connection.status = "accepted"
-        messages.success(request, f"Connection with {connection.sender.username} accepted!")
-    elif action == "reject":
-        connection.status = "rejected"
-        messages.info(request, f"Connection with {connection.sender.username} rejected.")
-
-    connection.save()
-    return redirect("peer_connections")
-
-
-@login_required
-def peer_messages(request, user_id):
-    """Display and handle messages with a peer."""
-    peer = get_object_or_404(User, id=user_id)
-
-    # Check if users are connected
-    connection = PeerConnection.objects.filter(
-        (Q(sender=request.user, receiver=peer) | Q(sender=peer, receiver=request.user)),
-        status="accepted",
-    ).first()
-
-    if not connection:
-        messages.error(request, "You must be connected with this user to send messages.")
-        return redirect("peer_connections")
-
-    if request.method == "POST":
-        content = request.POST.get("content")
-        if content:
-            PeerMessage.objects.create(sender=request.user, receiver=peer, content=content)
-            messages.success(request, "Message sent!")
-
-    # Get conversation messages
-    messages_list = PeerMessage.objects.filter(
-        (Q(sender=request.user, receiver=peer) | Q(sender=peer, receiver=request.user))
-    ).order_by("created_at")
-
-    # Mark received messages as read
-    messages_list.filter(sender=peer, receiver=request.user, is_read=False).update(is_read=True)
-
-    return render(request, "web/peer/messages.html", {"peer": peer, "messages": messages_list})
-
-
-@login_required
-def study_groups(request, course_id):
-    """Display study groups for a course."""
-    course = get_object_or_404(Course, id=course_id)
-    groups = course.study_groups.all()
-
-    if request.method == "POST":
-        name = request.POST.get("name")
-        description = request.POST.get("description")
-        max_members = request.POST.get("max_members", 10)
-        is_private = request.POST.get("is_private", False)
-
-        if name and description:
-            group = StudyGroup.objects.create(
-                course=course,
-                creator=request.user,
-                name=name,
-                description=description,
-                max_members=max_members,
-                is_private=is_private,
-            )
-            group.members.add(request.user)
-            messages.success(request, "Study group created successfully!")
-            return redirect("study_group_detail", group_id=group.id)
-
-    return render(request, "web/study/groups.html", {"course": course, "groups": groups})
-
-
-@login_required
-def study_group_detail(request, group_id):
-    """Display study group details and handle join/leave requests."""
-    group = get_object_or_404(StudyGroup, id=group_id)
-
-    if request.method == "POST":
-        action = request.POST.get("action")
-
-        if action == "join":
-            if group.members.count() >= group.max_members:
-                messages.error(request, "This group is full!")
-            else:
-                group.members.add(request.user)
-                messages.success(request, f"You have joined {group.name}!")
-
-        elif action == "leave":
-            if request.user == group.creator:
-                messages.error(request, "Group creator cannot leave the group!")
-            else:
-                group.members.remove(request.user)
-                messages.info(request, f"You have left {group.name}.")
-
-    return render(request, "web/study/group_detail.html", {"group": group})
-
-
-# API Views
-@login_required
-def api_course_list(request):
-    """API endpoint for listing courses."""
-    courses = Course.objects.filter(status="published")
-    data = [
-        {
-            "id": course.id,
-            "title": course.title,
-            "description": course.description,
-            "teacher": course.teacher.username,
-            "price": str(course.price),
-            "subject": course.subject,
-            "level": course.level,
-            "slug": course.slug,
-        }
-        for course in courses
-    ]
-    return JsonResponse(data, safe=False)
-
-
-@login_required
-@teacher_required
-def api_course_create(request):
-    """API endpoint for creating a course."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Only POST method is allowed"}, status=405)
-
-    data = json.loads(request.body)
-    course = Course.objects.create(
-        teacher=request.user,
-        title=data["title"],
-        description=data["description"],
-        learning_objectives=data["learning_objectives"],
-        prerequisites=data.get("prerequisites", ""),
-        price=data["price"],
-        max_students=data["max_students"],
-        subject=data["subject"],
-        level=data["level"],
-    )
-    return JsonResponse(
-        {
-            "id": course.id,
-            "title": course.title,
-            "slug": course.slug,
-        },
-        status=201,
-    )
-
-
-@login_required
-def api_course_detail(request, slug):
-    """API endpoint for course details."""
-    course = get_object_or_404(Course, slug=slug)
-    data = {
-        "id": course.id,
-        "title": course.title,
-        "description": course.description,
-        "teacher": course.teacher.username,
-        "price": str(course.price),
-        "subject": course.subject,
-        "level": course.level,
-        "prerequisites": course.prerequisites,
-        "learning_objectives": course.learning_objectives,
-        "max_students": course.max_students,
-        "available_spots": course.available_spots,
-        "average_rating": course.average_rating,
-    }
-    return JsonResponse(data)
-
-
-@login_required
-def api_enroll(request, course_slug):
-    """API endpoint for course enrollment."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Only POST method is allowed"}, status=405)
-
-    course = get_object_or_404(Course, slug=course_slug)
-    if request.user.enrollments.filter(course=course).exists():
-        return JsonResponse({"error": "Already enrolled"}, status=400)
-
-    enrollment = Enrollment.objects.create(
-        student=request.user,
-        course=course,
-        status="pending",
-    )
-    return JsonResponse(
-        {
-            "id": enrollment.id,
-            "status": enrollment.status,
-        },
-        status=201,
-    )
-
-
-@login_required
-def api_enrollments(request):
-    """API endpoint for listing user enrollments."""
-    enrollments = request.user.enrollments.all()
-    data = [
-        {
-            "id": enrollment.id,
-            "course": {
-                "id": enrollment.course.id,
-                "title": enrollment.course.title,
-                "slug": enrollment.course.slug,
-            },
-            "status": enrollment.status,
-            "enrollment_date": enrollment.enrollment_date.isoformat(),
-        }
-        for enrollment in enrollments
-    ]
-    return JsonResponse(data, safe=False)
-
-
-@login_required
-def api_session_list(request, course_slug):
-    """API endpoint for listing course sessions."""
-    course = get_object_or_404(Course, slug=course_slug)
-    sessions = course.sessions.all()
-    data = [
-        {
-            "id": session.id,
-            "title": session.title,
-            "description": session.description,
-            "start_time": session.start_time.isoformat(),
-            "end_time": session.end_time.isoformat(),
-            "is_virtual": session.is_virtual,
-        }
-        for session in sessions
-    ]
-    return JsonResponse(data, safe=False)
-
-
-@login_required
-def api_session_detail(request, pk):
-    """API endpoint for session details."""
-    session = get_object_or_404(Session, pk=pk)
-    data = {
-        "id": session.id,
-        "title": session.title,
-        "description": session.description,
-        "start_time": session.start_time.isoformat(),
-        "end_time": session.end_time.isoformat(),
-        "is_virtual": session.is_virtual,
-        "meeting_link": session.meeting_link if session.is_virtual else None,
-        "location": session.location if not session.is_virtual else None,
-    }
-    return JsonResponse(data)
-
-
-@login_required
-def api_forum_topic_create(request):
-    """API endpoint for creating forum topics."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Only POST method is allowed"}, status=405)
-
-    data = json.loads(request.body)
-    category = get_object_or_404(ForumCategory, id=data["category"])
-    topic = ForumTopic.objects.create(
-        title=data["title"],
-        content=data["content"],
-        category=category,
-        author=request.user,
-    )
-    return JsonResponse(
-        {
-            "id": topic.id,
-            "title": topic.title,
-        },
-        status=201,
-    )
-
-
-@login_required
-def api_forum_reply_create(request):
-    """API endpoint for creating forum replies."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Only POST method is allowed"}, status=405)
-
-    data = json.loads(request.body)
-    topic = get_object_or_404(ForumTopic, id=data["topic"])
-    reply = ForumReply.objects.create(
-        topic=topic,
-        content=data["content"],
-        author=request.user,
-    )
-    return JsonResponse(
-        {
-            "id": reply.id,
-            "content": reply.content,
-        },
-        status=201,
-    )
-
-
-@login_required
-def session_detail(request, session_id):
-    try:
-        session = get_object_or_404(Session, id=session_id)
-
-        # Check access rights
-        if not (
-            request.user == session.course.teacher
-            or request.user.enrollments.filter(course=session.course, status="approved").exists()
-        ):
-            return HttpResponseForbidden("You don't have access to this session")
-
-        # Get next session for waiting room functionality
-        next_session = None
-        user_in_session_waiting_room = False
-
-        if request.user.is_authenticated:
-            # Get the next upcoming session for this course
-            next_session = session.course.sessions.filter(start_time__gt=timezone.now()).order_by("start_time").first()
-
-            # Check if user is in the session waiting room
-            try:
-                session_waiting_room = WaitingRoom.objects.get(course=session.course, status="open")
-                user_in_session_waiting_room = request.user in session_waiting_room.participants.all()
-            except WaitingRoom.DoesNotExist:
-                user_in_session_waiting_room = False
-
-        context = {
-            "session": session,
-            "is_teacher": request.user == session.course.teacher,
-            "now": timezone.now(),
-            "next_session": next_session,
-            "user_in_session_waiting_room": user_in_session_waiting_room,
-        }
-
-        return render(request, "web/study/session_detail.html", context)
-
-    except Session.DoesNotExist:
-        messages.error(request, "Session not found")
-        return redirect("course_search")
-    except Exception as e:
-        if settings.DEBUG:
-            raise e
-        messages.error(request, "An error occurred while loading the session")
-        return redirect("index")
-
-
-def blog_list(request):
-    blog_posts = BlogPost.objects.filter(status="published").order_by("-published_at")
-    tags = BlogPost.objects.values_list("tags", flat=True).distinct()
-    # Split comma-separated tags and get unique values
-    unique_tags = sorted(set(tag.strip() for tags_str in tags if tags_str for tag in tags_str.split(",")))
-
-    return render(request, "blog/list.html", {"blog_posts": blog_posts, "tags": unique_tags})
-
-
-def blog_tag(request, tag):
-    """View for filtering blog posts by tag."""
-    blog_posts = BlogPost.objects.filter(status="published", tags__icontains=tag).order_by("-published_at")
-    tags = BlogPost.objects.values_list("tags", flat=True).distinct()
-    # Split comma-separated tags and get unique values
-    unique_tags = sorted(set(tag.strip() for tags_str in tags if tags_str for tag in tags_str.split(",")))
-
-    return render(request, "blog/list.html", {"blog_posts": blog_posts, "tags": unique_tags, "current_tag": tag})
-
-
-@login_required
-def create_blog_post(request):
-    if request.method == "POST":
-        form = BlogPostForm(request.POST, request.FILES)
-        if form.is_valid():
-            post = form.save(commit=False)
-            post.author = request.user
-            post.save()
-            messages.success(request, "Blog post created successfully!")
-            return redirect("blog_detail", slug=post.slug)
-    else:
-        form = BlogPostForm()
-
-    return render(request, "blog/create.html", {"form": form})
-
-
-def blog_detail(request, slug):
-    """Display a blog post and its comments."""
-    post = get_object_or_404(BlogPost, slug=slug, status="published")
-    comments = post.comments.filter(is_approved=True).order_by("created_at")
-
-    if request.method == "POST":
-        if not request.user.is_authenticated:
-            messages.error(request, "Please log in to comment.")
-            return redirect("account_login")
-
-        comment_content = request.POST.get("content")
-        if comment_content:
-            comment = BlogComment.objects.create(
-                post=post, author=request.user, content=comment_content, is_approved=True  # Auto-approve for now
-            )
-            messages.success(request, f"Comment #{comment.id} added successfully!")
-            return redirect("blog_detail", slug=slug)
-
-    # Get view count from WebRequest
-    view_count = WebRequest.objects.filter(path=request.path).aggregate(total_views=Sum("count"))["total_views"] or 0
-
-    context = {
-        "post": post,
-        "comments": comments,
-        "view_count": view_count,
-    }
-    return render(request, "blog/detail.html", context)
-
-
-@login_required
-def student_dashboard(request):
-    """
-    Dashboard view for students showing enrollments, progress, upcoming sessions, learning streak,
-    and an Achievements section.
-    """
-
-    # Update the learning streak.
-    streak, created = LearningStreak.objects.get_or_create(user=request.user)
-    streak.update_streak()
-
-    enrollments = Enrollment.objects.filter(student=request.user).select_related("course")
-    upcoming_sessions = Session.objects.filter(
-        course__enrollments__student=request.user, start_time__gt=timezone.now()
-    ).order_by("start_time")[:5]
-
-    progress_data = []
-    total_progress = 0
-    for enrollment in enrollments:
-        progress, _ = CourseProgress.objects.get_or_create(enrollment=enrollment)
-        progress_data.append(
-            {
-                "enrollment": enrollment,
-                "progress": progress,
-            }
-        )
-        total_progress += progress.completion_percentage
-
-    avg_progress = round(total_progress / len(progress_data)) if progress_data else 0
-
-    # Query achievements for the user.
-    achievements = Achievement.objects.filter(student=request.user).order_by("-awarded_at")
-
-    context = {
-        "enrollments": enrollments,
-        "upcoming_sessions": upcoming_sessions,
-        "progress_data": progress_data,
-        "avg_progress": avg_progress,
-        "streak": streak,
-        "achievements": achievements,
-    }
-    return render(request, "dashboard/student.html", context)
-
-
-@login_required
-@teacher_required
-def teacher_dashboard(request):
-    """Dashboard view for teachers showing their courses, student progress, and upcoming sessions.
-
-    The earnings calculation is based on completed payment records, not just enrollments.
-    This ensures that earnings accurately reflect actual transactions rather than just the
-    number of enrolled students. Each payment has a 90% teacher commission rate applied.
-    """
-    courses = Course.objects.filter(teacher=request.user)
-    upcoming_sessions = Session.objects.filter(course__teacher=request.user, start_time__gt=timezone.now()).order_by(
-        "start_time"
-    )[:5]
-
-    # Get enrollment and progress stats for each course
-    course_stats = []
-    total_students = 0
-    total_completed = 0
-    total_earnings = Decimal("0.00")
-    for course in courses:
-        enrollments = course.enrollments.filter(status="approved")
-        course_total_students = enrollments.count()
-        course_completed = enrollments.filter(status="completed").count()
-        total_students += course_total_students
-        total_completed += course_completed
-
-        # Calculate earnings based on completed payments instead of enrollment count
-        # Each payment has an amount field which represents the actual amount paid
-        # We apply the teacher's commission rate (90% by default, 10% platform fee)
-        course_earnings = Decimal("0.00")
-        for enrollment in enrollments:
-            # Get all completed payments for this enrollment
-            completed_payments = enrollment.payments.filter(status="completed")
-            for payment in completed_payments:
-                # Apply the 90% teacher commission
-                course_earnings += payment.amount * Decimal("0.9")
-
-        total_earnings += course_earnings
-        course_stats.append(
-            {
-                "course": course,
-                "total_students": course_total_students,
-                "completed": course_completed,
-                "completion_rate": (course_completed / course_total_students * 100) if course_total_students > 0 else 0,
-                "earnings": course_earnings,
-            }
-        )
-
-    # Get the teacher's storefront if it exists
-    storefront = Storefront.objects.filter(teacher=request.user).first()
-
-    context = {
-        "courses": courses,
-        "upcoming_sessions": upcoming_sessions,
-        "course_stats": course_stats,
-        "total_students": total_students,
-        "completion_rate": (total_completed / total_students * 100) if total_students > 0 else 0,
-        "total_earnings": round(total_earnings, 2),
-        "storefront": storefront,
-    }
-    return render(request, "dashboard/teacher.html", context)
-
-
-def custom_404(request, exception):
-    """Custom 404 error handler"""
-    return render(request, "404.html", status=404)
-
-
-# def custom_500(request):
-#     """Custom 500 error handler"""
-#     return render(request, "500.html", status=500)
-
-
-def custom_429(request, exception=None):
-    """Custom 429 error page."""
-    return render(request, "429.html", status=429)
-
-
-def cart_view(request):
-    """View the shopping cart."""
-    cart = get_or_create_cart(request)
-    return render(request, "cart/cart.html", {"cart": cart, "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY})
-
-
-def add_course_to_cart(request, course_id):
-    """Add a course to the cart."""
-    course = get_object_or_404(Course, id=course_id)
-    cart = get_or_create_cart(request)
-
-    # Try to get or create the cart item
-    cart_item, created = CartItem.objects.get_or_create(cart=cart, course=course, defaults={"session": None})
-
-    if created:
-        messages.success(request, f"{course.title} added to cart.")
-    else:
-        messages.info(request, f"{course.title} is already in your cart.")
-
-    return redirect("cart_view")
-
-
-def add_session_to_cart(request, session_id):
-    """Add an individual session to the cart."""
-    session = get_object_or_404(Session, id=session_id)
-    cart = get_or_create_cart(request)
-
-    # Try to get or create the cart item
-    cart_item, created = CartItem.objects.get_or_create(cart=cart, session=session, defaults={"course": None})
-
-    if created:
-        messages.success(request, f"{session.title} added to cart.")
-    else:
-        messages.info(request, f"{session.title} is already in your cart.")
-
-    return redirect("cart_view")
-
-
-def remove_from_cart(request, item_id):
-    """Remove an item from the shopping cart."""
-    cart = get_or_create_cart(request)
-    item = get_object_or_404(CartItem, id=item_id, cart=cart)
-    item.delete()
-    messages.success(request, "Item removed from cart.")
-    return redirect("cart_view")
-
-
-def create_cart_payment_intent(request):
-    """Create a payment intent for the entire cart."""
-    cart = get_or_create_cart(request)
-
-    if not cart.items.exists():
-        return JsonResponse({"error": "Cart is empty"}, status=400)
-
-    # Handle free cart (all items are free courses)
-    if cart.total == 0:
-        return JsonResponse({"free_cart": True, "message": "Cart contains only free items"})
-
-    try:
-        # Create a PaymentIntent with the cart total
-        intent = stripe.PaymentIntent.create(
-            amount=int(cart.total * 100),  # Convert to cents
-            currency="usd",
-            metadata={
-                "cart_id": cart.id,
-                "user_id": request.user.id if request.user.is_authenticated else None,
-                "session_key": request.session.session_key if not request.user.is_authenticated else None,
-            },
-        )
-        return JsonResponse({"clientSecret": intent.client_secret})
-    except Exception as e:
-        return JsonResponse({"error": str(e)}, status=403)
-
-
-@login_required
-def free_cart_checkout(request):
-    """Handle checkout for cart with only free items."""
-    if request.method != "POST":
-        messages.error(request, "Invalid request method.")
-        return redirect("cart_view")
-
-    cart = get_or_create_cart(request)
-
-    if not cart.items.exists():
-        messages.error(request, "Cart is empty.")
-        return redirect("cart_view")
-
-    # Verify that cart total is 0 (all items are free)
-    if cart.total != 0:
-        messages.error(request, "Cart contains paid items. Please use regular checkout.")
-        return redirect("cart_view")
-
-    user = request.user
-    enrollments = []
-    session_enrollments = []
-    goods_items = []
-
-    # Create the Order
-    order = Order.objects.create(
-        user=user,
-        total_price=0,
-        status="completed",
-        shipping_address=None,
-        terms_accepted=True,
-    )
-
-    # Process enrollments
-    for item in cart.items.all():
-        if item.course:
-            # Create enrollment for free course
-            enrollment = Enrollment.objects.create(student=user, course=item.course, status="approved")
-            enrollments.append(enrollment)
-
-            # Send notifications
-            send_enrollment_confirmation(enrollment)
-            notify_teacher_new_enrollment(enrollment)
-
-        elif item.session:
-            # Process individual session enrollments
-            session_enrollment = SessionEnrollment.objects.create(student=user, session=item.session, status="approved")
-            session_enrollments.append(session_enrollment)
-
-        elif item.goods:
-            # Free goods (price = 0)
-            goods_items.append(item)
-            OrderItem.objects.create(
-                order=order,
-                goods=item.goods,
-                quantity=1,
-                price_at_purchase=0,
-                discounted_price_at_purchase=0,
-            )
-
-    # Clear the cart
-    cart.items.all().delete()
-
-    # Render the receipt page
-    return render(
-        request,
-        "cart/receipt.html",
-        {
-            "payment_intent_id": None,
-            "order_date": timezone.now(),
-            "user": user,
-            "enrollments": enrollments,
-            "session_enrollments": session_enrollments,
-            "goods_items": goods_items,
-            "total": 0,
-            "order": order,
-            "shipping_address": None,
-        },
-    )
-
-
-def checkout_success(request):
-    """Handle successful checkout and payment confirmation."""
-    payment_intent_id = request.GET.get("payment_intent")
-
-    if not payment_intent_id:
-        messages.error(request, "No payment information found.")
-        return redirect("cart_view")
-
-    try:
-        # Verify the payment intent
-        payment_intent = stripe.PaymentIntent.retrieve(payment_intent_id)
-
-        if payment_intent.status != "succeeded":
-            messages.error(request, "Payment was not successful.")
-            return redirect("cart_view")
-
-        cart = get_or_create_cart(request)
-
-        if not cart.items.exists():
-            messages.error(request, "Cart is empty.")
-            return redirect("cart_view")
-
-        # Handle guest checkout
-        if not request.user.is_authenticated:
-            email = payment_intent.receipt_email
-            if not email:
-                messages.error(request, "No email provided for guest checkout.")
-                return redirect("cart_view")
-
-            # Create a new user account with transaction and better username generation
-            with transaction.atomic():
-                # Generate a random username without using the email
-                timestamp = timezone.now().strftime("%Y%m%d%H%M%S")
-                username = f"user_{timestamp}"
-
-                # In the unlikely case of a collision, append random string
-                while User.objects.filter(username=username).exists():
-                    username = f"user_{timestamp}_{get_random_string(6)}"
-
-                # Create the user
-                user = User.objects.create_user(
-                    username=username,
-                    email=email,
-                    password=get_random_string(length=32),  # Random password for reset
-                )
-
-                # Associate the cart with the new user
-                cart.user = user
-                cart.session_key = ""  # Empty string instead of None
-                cart.save()
-
-                # Send welcome email with password reset link
-                send_welcome_email(user)
-
-                # Log in the new user
-                login(request, user, backend="django.contrib.auth.backends.ModelBackend")
-        else:
-            user = request.user
-
-        # Lists to track enrollments for the receipt
-        enrollments = []
-        session_enrollments = []
-        goods_items = []
-        total_amount = 0
-
-        # Define shipping_address
-        shipping_address = request.POST.get("address") if cart.has_goods else None
-
-        # Check if the cart contains goods requiring shipping
-        has_goods = any(item.goods for item in cart.items.all())
-
-        # Extract shipping address from Stripe PaymentIntent
-        shipping_address = None
-        if has_goods:
-            shipping_data = getattr(payment_intent, "shipping", None)
-            if shipping_data:
-                # Construct structured shipping address
-                shipping_address = {
-                    "line1": shipping_data.address.line1,
-                    "line2": shipping_data.address.line2 or "",
-                    "city": shipping_data.address.city,
-                    "state": shipping_data.address.state,
-                    "postal_code": shipping_data.address.postal_code,
-                    "country": shipping_data.address.country,
-                }
-
-        # Create the Order with shipping address
-        order = Order.objects.create(
-            user=user,  # User is defined earlier in guest/auth logic
-            total_price=0,  # Updated later
-            status="completed",
-            shipping_address=shipping_address,
-            terms_accepted=True,
-        )
-
-        storefront = None
-        # Process enrollments
-        for item in cart.items.all():
-            if item.course:
-                # Check for an active discount coupon for this course
-                discount = Discount.objects.filter(
-                    user=user, course=item.course, used=False, valid_until__gte=timezone.now()
-                ).first()
-                if discount:
-                    # Calculate the discounted price
-                    discount_amount = (discount.discount_percentage / 100) * item.course.price
-                    effective_price = item.course.price - discount_amount
-                    # Mark the coupon as used
-                    discount.used = True
-                    discount.save()
-                else:
-                    effective_price = item.course.price
-
-                # Create enrollment for the course
-                enrollment = Enrollment.objects.create(
-                    student=user, course=item.course, status="approved", payment_intent_id=payment_intent_id
-                )
-                enrollments.append(enrollment)
-                total_amount += effective_price
-
-                # Create payment record for teacher earnings calculation
-                Payment.objects.create(
-                    enrollment=enrollment,
-                    amount=effective_price,
-                    currency="USD",
-                    stripe_payment_intent_id=payment_intent_id,
-                    status="completed",
-                )
-
-                # Optionally, you can send confirmation emails with discount details
-                send_enrollment_confirmation(enrollment)
-                notify_teacher_new_enrollment(enrollment)
-
-            elif item.session:
-                # Process individual session enrollments (no discount logic here)
-                session_enrollment = SessionEnrollment.objects.create(
-                    student=user, session=item.session, status="approved", payment_intent_id=payment_intent_id
-                )
-                session_enrollments.append(session_enrollment)
-                total_amount += item.session.price
-
-            elif item.goods:
-                goods_items.append(item)
-                total_amount += item.final_price
-                OrderItem.objects.create(
-                    order=order,
-                    goods=item.goods,
-                    quantity=1,
-                    price_at_purchase=item.goods.price,
-                    discounted_price_at_purchase=item.goods.discount_price,
-                )
-                if not storefront:
-                    storefront = item.goods.storefront
-
-        # Update order details
-        order.total_price = total_amount
-        if storefront:
-            order.storefront = goods_items[0].goods.storefront
-        order.save()
-
-        # Clear the cart
-        cart.items.all().delete()
-
-        if storefront:
-            order.storefront = storefront
-            order.save(update_fields=["storefront"])
-
-        # Render the receipt page
-        return render(
-            request,
-            "cart/receipt.html",
-            {
-                "payment_intent_id": payment_intent_id,
-                "order_date": timezone.now(),
-                "user": user,
-                "enrollments": enrollments,
-                "session_enrollments": session_enrollments,
-                "goods_items": goods_items,
-                "total": total_amount,
-                "order": order,
-                "shipping_address": shipping_address,
-            },
-        )
-
-    except stripe.error.StripeError as e:
-        # send slack message
-        send_slack_message(f"Payment verification failed: {str(e)}")
-        messages.error(request, f"Payment verification failed: {str(e)}")
-        return redirect("cart_view")
-    except Exception as e:
-        # send slack message
-        send_slack_message(f"Failed to process checkout: {str(e)}")
-        messages.error(request, f"Failed to process checkout: {str(e)}")
-        return redirect("cart_view")
-
-
-def send_welcome_email(user):
-    """Send welcome email to newly created users after guest checkout."""
-    if not user.email:
-        raise ValueError("User must have an email address to send welcome email")
-
-    reset_url = reverse("account_reset_password")
-    context = {
-        "user": user,
-        "reset_url": reset_url,
-    }
-
-    html_message = render_to_string("emails/welcome_guest.html", context)
-    text_message = render_to_string("emails/welcome_guest.txt", context)
-
-    send_mail(
-        subject="Welcome to Your New Learning Account",
-        message=text_message,
-        html_message=html_message,
-        from_email=settings.DEFAULT_FROM_EMAIL,
-        recipient_list=[user.email],
-    )
-
-
-@login_required
-def edit_session(request, session_id):
-    """Edit an existing session."""
-    # Get the session and verify that the current user is the course teacher
-    session = get_object_or_404(Session, id=session_id)
-    course = session.course
-
-    # Check if user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can edit sessions!")
-        return redirect("course_detail", slug=course.slug)
-
-    if request.method == "POST":
-        form = SessionForm(request.POST, instance=session)
-        if form.is_valid():
-            form.save()
-            messages.success(request, "Session updated successfully!")
-            return redirect("course_detail", slug=session.course.slug)
-    else:
-        form = SessionForm(instance=session)
-
-    return render(
-        request, "courses/session_form.html", {"form": form, "session": session, "course": course, "is_edit": True}
-    )
-
-
-@login_required
-def invite_student(request, course_id):
-    course = get_object_or_404(Course, id=course_id)
-
-    # Check if user is the teacher of this course
-    if course.teacher != request.user:
-        messages.error(request, "You are not authorized to invite students to this course.")
-        return redirect("course_detail", slug=course.slug)
-
-    if request.method == "POST":
-        form = InviteStudentForm(request.POST)
-        if form.is_valid():
-            email = form.cleaned_data["email"]
-            message = form.cleaned_data.get("message", "")
-
-            # Generate course URL
-            course_url = request.build_absolute_uri(reverse("course_detail", args=[course.slug]))
-
-            # Send invitation email
-            context = {
-                "course": course,
-                "teacher": request.user,
-                "message": message,
-                "course_url": course_url,
-            }
-            html_message = render_to_string("emails/course_invitation.html", context)
-            text_message = f"""
-You have been invited to join {course.title}!
-
-Message from {request.user.get_full_name() or request.user.username}:
-{message}
-
-Course Price: ${course.price}
-
-Click here to view the course: {course_url}
-"""
-
-            try:
-                send_mail(
-                    f"Invitation to join {course.title}",
-                    text_message,
-                    settings.DEFAULT_FROM_EMAIL,
-                    [email],
-                    html_message=html_message,
-                )
-                messages.success(request, f"Invitation sent to {email}")
-                return redirect("course_detail", slug=course.slug)
-            except Exception:
-                messages.error(request, "Failed to send invitation email. Please try again.")
-    else:
-        form = InviteStudentForm()
-
-    context = {
-        "course": course,
-        "form": form,
-    }
-    return render(request, "courses/invite.html", context)
-
-
-def terms(request):
-    """Display the terms of service page."""
-    return render(request, "terms.html")
-
-
-@login_required
-@teacher_required
-def stripe_connect_onboarding(request):
-    """Start the Stripe Connect onboarding process for teachers."""
-    if not request.user.profile.is_teacher:
-        messages.error(request, "Only teachers can set up payment accounts.")
-        return redirect("profile")
-
-    try:
-        if not request.user.profile.stripe_account_id:
-            # Create a new Stripe Connect account
-            account = stripe.Account.create(
-                type="express",
-                country="US",
-                email=request.user.email,
-                capabilities={
-                    "card_payments": {"requested": True},
-                    "transfers": {"requested": True},
-                },
-            )
-
-            # Save the account ID to the user's profile
-            request.user.profile.stripe_account_id = account.id
-            request.user.profile.save()
-
-        # Create an account link for onboarding
-        account_link = stripe.AccountLink.create(
-            account=request.user.profile.stripe_account_id,
-            refresh_url=request.build_absolute_uri(reverse("stripe_connect_onboarding")),
-            return_url=request.build_absolute_uri(reverse("profile")),
-            type="account_onboarding",
-        )
-
-        return redirect(account_link.url)
-
-    except stripe.error.StripeError as e:
-        messages.error(request, f"Failed to set up Stripe account: {str(e)}")
-        return redirect("profile")
-
-
-@csrf_exempt
-def stripe_connect_webhook(request):
-    """Handle Stripe Connect account updates."""
-    payload = request.body
-    sig_header = request.META.get("HTTP_STRIPE_SIGNATURE")
-
-    try:
-        event = stripe.Webhook.construct_event(payload, sig_header, settings.STRIPE_CONNECT_WEBHOOK_SECRET)
-    except ValueError:
-        return HttpResponse(status=400)
-    except stripe.error.SignatureVerificationError:
-        return HttpResponse(status=400)
-
-    if event.type == "account.updated":
-        account = event.data.object
-        try:
-            profile = Profile.objects.get(stripe_account_id=account.id)
-            if account.charges_enabled and account.payouts_enabled:
-                profile.stripe_account_status = "verified"
-            else:
-                profile.stripe_account_status = "pending"
-            profile.save()
-        except Profile.DoesNotExist:
-            return HttpResponse(status=404)
-
-    return HttpResponse(status=200)
-
-
-@login_required
-def create_forum_category(request):
-    """Create a new forum category."""
-    if request.method == "POST":
-        form = ForumCategoryForm(request.POST)
-        if form.is_valid():
-            category = form.save(commit=False)
-            if not category.slug:
-                category.slug = slugify(category.name)
-            category.save()
-            messages.success(request, f"Forum category '{category.name}' created successfully!")
-            return redirect("forum_category", slug=category.slug)
-        else:
-            print(form.errors)
-    else:
-        form = ForumCategoryForm()
-
-    return render(request, "web/forum/create_category.html", {"form": form})
-
-
-@login_required
-def edit_topic(request, topic_id):
-    topic = get_object_or_404(ForumTopic, id=topic_id, author=request.user)
-    categories = ForumCategory.objects.all()
-
-    if request.method == "POST":
-        form = ForumTopicForm(request.POST)
-        if form.is_valid():
-            # Manually update the topic instance with form data.
-            topic.title = form.cleaned_data["title"]
-            topic.content = form.cleaned_data["content"]
-            topic.github_issue_url = form.cleaned_data.get("github_issue_url", "")
-            topic.github_milestone_url = form.cleaned_data.get("github_milestone_url", "")
-            topic.save()
-            messages.success(request, "Topic updated successfully!")
-            return redirect("forum_topic", category_slug=topic.category.slug, topic_id=topic.id)
-    else:
-        # Prepopulate the form with the topic's current data.
-        initial_data = {
-            "title": topic.title,
-            "content": topic.content,
-            "github_issue_url": topic.github_issue_url,
-            "github_milestone_url": topic.github_milestone_url,
-        }
-        form = ForumTopicForm(initial=initial_data)
-
-    return render(request, "web/forum/edit_topic.html", {"topic": topic, "form": form, "categories": categories})
-
-
-@login_required
-def my_forum_topics(request):
-    """Display all forum topics created by the current user."""
-    topics = ForumTopic.objects.filter(author=request.user).order_by("-created_at")
-    categories = ForumCategory.objects.all()
-    return render(request, "web/forum/my_topics.html", {"topics": topics, "categories": categories})
-
-
-@login_required
-def my_forum_replies(request):
-    """Display all forum replies created by the current user."""
-    replies = (
-        ForumReply.objects.filter(author=request.user)
-        .select_related("topic", "topic__category")
-        .order_by("-created_at")
-    )
-    categories = ForumCategory.objects.all()
-    return render(request, "web/forum/my_replies.html", {"replies": replies, "categories": categories})
-
-
-@login_required
-def edit_reply(request, reply_id):
-    """Edit a forum reply."""
-    reply = get_object_or_404(ForumReply, id=reply_id, author=request.user)
-    topic = reply.topic
-    categories = ForumCategory.objects.all()
-
-    if request.method == "POST":
-        content = request.POST.get("content")
-        if content:
-            reply.content = content
-            reply.save()
-            messages.success(request, "Reply updated successfully.")
-            return redirect("forum_topic", category_slug=topic.category.slug, topic_id=topic.id)
-
-    return render(request, "web/forum/edit_reply.html", {"reply": reply, "categories": categories})
-
-
-def get_course_calendar(request, slug):
-    """AJAX endpoint to get calendar data for a course."""
-    course = get_object_or_404(Course, slug=slug)
-    today = timezone.now().date()
-    calendar_weeks = []
-
-    # Get current month and year from query parameters
-    year = int(request.GET.get("year", today.year))
-    month = int(request.GET.get("month", today.month))
-    current_month = timezone.datetime(year, month, 1).date()
-
-    # Get previous and next month for navigation
-    if month == 1:
-        prev_month = {"year": year - 1, "month": 12}
-    else:
-        prev_month = {"year": year, "month": month - 1}
-
-    if month == 12:
-        next_month = {"year": year + 1, "month": 1}
-    else:
-        next_month = {"year": year, "month": month + 1}
-
-    # Get sessions for the current month
-    month_sessions = course.sessions.filter(start_time__year=year, start_time__month=month).order_by("start_time")
-
-    # Generate calendar data
-    cal = calendar.monthcalendar(year, month)
-
-    for week in cal:
-        calendar_week = []
-        for day in week:
-            if day == 0:
-                calendar_week.append({"date": None, "has_session": False, "is_today": False})
-            else:
-                date = timezone.datetime(year, month, day).date()
-                sessions_on_day = [s for s in month_sessions if s.start_time.date() == date]
-                calendar_week.append(
-                    {
-                        "date": date.isoformat() if date else None,
-                        "has_session": bool(sessions_on_day),
-                        "is_today": date == today,
-                    }
-                )
-        calendar_weeks.append(calendar_week)
-
-    data = {
-        "calendar_weeks": calendar_weeks,
-        "current_month": current_month.strftime("%B %Y"),
-        "prev_month": prev_month,
-        "next_month": next_month,
-    }
-
-    return JsonResponse(data)
-
-
-@login_required
-def create_calendar(request):
-    if request.method == "POST":
-        title = request.POST.get("title")
-        description = request.POST.get("description")
-        try:
-            month = int(request.POST.get("month"))
-            year = int(request.POST.get("year"))
-
-            # Validate month is between 0-11
-            if not 0 <= month <= 11:
-                return JsonResponse({"success": False, "error": "Month must be between 0 and 11"}, status=400)
-
-            calendar = EventCalendar.objects.create(
-                title=title, description=description, creator=request.user, month=month, year=year
-            )
-
-            return JsonResponse({"success": True, "calendar_id": calendar.id, "share_token": calendar.share_token})
-        except (ValueError, TypeError):
-            return JsonResponse({"success": False, "error": "Invalid month or year"}, status=400)
-
-    return render(request, "calendar/create.html")
-
-
-def view_calendar(request, share_token):
-    calendar = get_object_or_404(EventCalendar, share_token=share_token)
-    return render(request, "calendar/view.html", {"calendar": calendar})
-
-
-@require_POST
-def add_time_slot(request, share_token):
-    try:
-        with transaction.atomic():
-            calendar = get_object_or_404(EventCalendar, share_token=share_token)
-            name = request.POST.get("name")
-            day = int(request.POST.get("day"))
-            start_time = request.POST.get("start_time")
-            end_time = request.POST.get("end_time")
-
-            # Create the time slot
-            TimeSlot.objects.create(calendar=calendar, name=name, day=day, start_time=start_time, end_time=end_time)
-
-            return JsonResponse({"success": True})
-    except IntegrityError:
-        return JsonResponse({"success": False, "error": "You already have a time slot for this day"}, status=400)
-    except Exception as e:
-        return JsonResponse({"success": False, "error": str(e)}, status=400)
-
-
-@require_POST
-def remove_time_slot(request, share_token):
-    calendar = get_object_or_404(EventCalendar, share_token=share_token)
-    name = request.POST.get("name")
-    day = int(request.POST.get("day"))
-
-    TimeSlot.objects.filter(calendar=calendar, name=name, day=day).delete()
-
-    return JsonResponse({"success": True})
-
-
-@require_GET
-def get_calendar_data(request, share_token):
-    calendar = get_object_or_404(EventCalendar, share_token=share_token)
-    slots = TimeSlot.objects.filter(calendar=calendar)
-
-    data = {
-        "title": calendar.title,
-        "description": calendar.description,
-        "month": calendar.month,
-        "year": calendar.year,
-        "slots": [
-            {
-                "name": slot.name,
-                "day": slot.day,
-                "start_time": slot.start_time.strftime("%H:%M"),
-                "end_time": slot.end_time.strftime("%H:%M"),
-            }
-            for slot in slots
-        ],
-    }
-
-    return JsonResponse(data)
-
-
-def system_status(request):
-    """Check system status including SendGrid API connectivity and disk space usage."""
-    status = {
-        "sendgrid": {"status": "unknown", "message": "", "api_key_configured": False},
-        "disk_space": {"status": "unknown", "message": "", "usage": {}},
-        "timestamp": timezone.now(),
-    }
-
-    # Check SendGrid
-    sendgrid_api_key = os.getenv("SENDGRID_PASSWORD")
-    if sendgrid_api_key:
-        status["sendgrid"]["api_key_configured"] = True
-        try:
-            print("Checking SendGrid API...")
-            response = requests.get(
-                "https://api.sendgrid.com/v3/user/account",
-                headers={"Authorization": f"Bearer {sendgrid_api_key}"},
-                timeout=5,
-            )
-            if response.status_code == 200:
-                status["sendgrid"]["status"] = "ok"
-                status["sendgrid"]["message"] = "Successfully connected to SendGrid API"
-            else:
-                status["sendgrid"]["status"] = "error"
-                status["sendgrid"]["message"] = f"Unexpected response: {response.status_code}"
-        except requests.exceptions.RequestException as e:
-            status["sendgrid"]["status"] = "error"
-            status["sendgrid"]["message"] = f"API Error: {str(e)}"
-    else:
-        status["sendgrid"]["status"] = "error"
-        status["sendgrid"]["message"] = "SendGrid API key not configured"
-
-    # Check disk space
-    try:
-        total, used, free = shutil.disk_usage("/")
-        total_gb = total / (2**30)  # Convert to GB
-        used_gb = used / (2**30)
-        free_gb = free / (2**30)
-        usage_percent = (used / total) * 100
-
-        status["disk_space"]["usage"] = {
-            "total_gb": round(total_gb, 2),
-            "used_gb": round(used_gb, 2),
-            "free_gb": round(free_gb, 2),
-            "percent": round(usage_percent, 1),
-        }
-
-        # Set status based on usage percentage
-        if usage_percent >= 90:
-            status["disk_space"]["status"] = "error"
-            status["disk_space"]["message"] = "Critical: Disk usage above 90%"
-        elif usage_percent >= 80:
-            status["disk_space"]["status"] = "warning"
-            status["disk_space"]["message"] = "Warning: Disk usage above 80%"
-        else:
-            status["disk_space"]["status"] = "ok"
-            status["disk_space"]["message"] = "Disk space usage is normal"
-    except Exception as e:
-        status["disk_space"]["status"] = "error"
-        status["disk_space"]["message"] = f"Error checking disk space: {str(e)}"
-
-    return render(request, "status.html", {"status": status})
-
-
-@login_required
-@teacher_required
-def message_enrolled_students(request, slug):
-    """Send an email to all enrolled students in a course with encrypted content."""
-    course = get_object_or_404(Course, slug=slug, teacher=request.user)
-
-    if request.method == "POST":
-        title = request.POST.get("title")
-        message = request.POST.get("message")
-
-        if title and message:
-            original_message = message
-
-            # Get all enrolled students
-            enrolled_students = User.objects.filter(
-                enrollments__course=course, enrollments__status="approved"
-            ).distinct()
-
-            # Send email to each student with the encrypted message
-            for student in enrolled_students:
-                send_mail(
-                    subject=f"[{course.title}] {title}",
-                    message=original_message,
-                    from_email=settings.DEFAULT_FROM_EMAIL,
-                    recipient_list=[student.email],
-                    fail_silently=True,
-                )
-
-            messages.success(request, "Email sent successfully to all enrolled students!")
-            return redirect("course_detail", slug=slug)
-        else:
-            messages.error(request, "Both title and message are required!")
-
-    return render(request, "courses/message_students.html", {"course": course})
-
-
-def message_teacher(request, teacher_id):
-    """Send a message to a teacher with secure encryption."""
-    teacher = get_object_or_404(get_user_model(), id=teacher_id)
-    if not teacher.profile.is_teacher:
-        messages.error(request, "This user is not a teacher.")
-        return redirect("index")
-
-    if request.method == "POST":
-        form = MessageTeacherForm(request.POST, user=request.user)
-        if form.is_valid():
-            original_message = request.POST.get("message")
-
-            # Prepare email content
-            if request.user.is_authenticated:
-                sender_name = request.user.get_full_name() or request.user.username
-                sender_email = request.user.email
-            else:
-                sender_name = form.cleaned_data["name"]
-                sender_email = form.cleaned_data["email"]
-
-            # Send email to teacher using the encrypted message
-            context = {
-                "sender_name": sender_name,
-                "sender_email": sender_email,
-                "message": original_message,
-                "inbox_url": request.build_absolute_uri(reverse("inbox")),
-                "messaging_dashboard_url": request.build_absolute_uri(reverse("messaging_dashboard")),
-            }
-            html_message = render_to_string("web/emails/teacher_message.html", context)
-
-            try:
-                send_mail(
-                    subject=f"New message from {sender_name}",
-                    message=original_message,
-                    from_email=settings.DEFAULT_FROM_EMAIL,
-                    recipient_list=[teacher.email],
-                    html_message=html_message,
-                )
-                messages.success(request, "Your message has been sent successfully!")
-
-                # Optionally redirect based on next URL parameter
-                next_url = request.GET.get("next")
-                if next_url:
-                    try:
-                        return redirect("course_detail", slug=next_url)
-                    except NoReverseMatch:
-                        pass
-                return redirect("course_search")
-            except Exception as e:
-                messages.error(request, f"Failed to send message: {str(e)}")
-                return redirect("message_teacher", teacher_id=teacher_id)
-    else:
-        form = MessageTeacherForm(user=request.user)
-
-    return render(
-        request,
-        "web/message_teacher.html",
-        {
-            "form": form,
-            "teacher": teacher,
-        },
-    )
-
-
-@login_required
-def confirm_rolled_sessions(request, course_slug):
-    """View for teachers to confirm rolled over session dates."""
-    course = get_object_or_404(Course, slug=course_slug, teacher=request.user)
-
-    # Get all rolled over but unconfirmed sessions
-    rolled_sessions = course.sessions.filter(is_rolled_over=True, teacher_confirmed=False).order_by("start_time")
-
-    if request.method == "POST":
-        session_ids = request.POST.getlist("confirm_sessions")
-        if session_ids:
-            # Confirm selected sessions
-            course.sessions.filter(id__in=session_ids).update(teacher_confirmed=True)
-            messages.success(request, "Selected sessions have been confirmed.")
-
-            # Reset rollover status for unselected sessions
-            unselected_sessions = rolled_sessions.exclude(id__in=session_ids)
-            for session in unselected_sessions:
-                session.start_time = session.original_start_time
-                session.end_time = session.original_end_time
-                session.is_rolled_over = False
-                session.save()
-
-            messages.info(request, "Unselected sessions have been reset to their original dates.")
-
-        return redirect("course_detail", slug=course_slug)
-
-    return render(
-        request,
-        "courses/confirm_rolled_sessions.html",
-        {
-            "course": course,
-            "rolled_sessions": rolled_sessions,
-        },
-    )
-
-
-def feedback(request):
-    if request.method == "POST":
-        form = FeedbackForm(request.POST)
-        if form.is_valid():
-            # Send feedback notification to admin
-            name = form.cleaned_data.get("name", "Anonymous")
-            email = form.cleaned_data.get("email", "Not provided")
-            description = form.cleaned_data["description"]
-
-            # Send to Slack if webhook URL is configured
-            if settings.SLACK_WEBHOOK_URL:
-                message = f"*New Feedback*\nFrom: {name}\nEmail: {email}\n\n{description}"
-                send_slack_message(message)
-
-            messages.success(request, "Thank you for your feedback! We appreciate your input.")
-            return redirect("feedback")
-    else:
-        form = FeedbackForm()
-
-    return render(request, "feedback.html", {"form": form})
-
-
-def content_dashboard(request):
-    # Get current time and thresholds
-    now = timezone.now()
-    month_ago = now - timedelta(days=30)
-
-    def get_status(date, threshold_days=None):
-        if not date:
-            return "neutral"
-        if not threshold_days:
-            return "success"
-        threshold = now - timedelta(days=threshold_days)
-        if date >= threshold:
-            return "success"
-        elif date >= (threshold - timedelta(days=threshold_days)):
-            return "warning"
-        return "danger"
-
-    # Web traffic stats
-    web_stats = {
-        "total_views": WebRequest.objects.aggregate(total=Sum("count"))["total"] or 0,
-        "unique_visitors": WebRequest.objects.values("ip_address").distinct().count(),
-        "date": WebRequest.objects.order_by("-created").first().created if WebRequest.objects.exists() else None,
-    }
-    web_stats["status"] = get_status(web_stats["date"])
-
-    # Generate traffic data for chart (last 30 days)
-    traffic_data = []
-    for i in range(30):
-        date = now - timedelta(days=i)
-        day_views = WebRequest.objects.filter(created__date=date.date()).aggregate(total=Sum("count"))["total"] or 0
-        traffic_data.append({"date": date.strftime("%Y-%m-%d"), "views": day_views})
-    traffic_data.reverse()  # Most recent last for chart
-
-    # Blog stats
-    blog_stats = {
-        "posts": BlogPost.objects.filter(status="published").count(),
-        "views": (WebRequest.objects.filter(path__startswith="/blog/").aggregate(total=Sum("count"))["total"] or 0),
-        "date": (
-            BlogPost.objects.filter(status="published").order_by("-published_at").first().published_at
-            if BlogPost.objects.exists()
-            else None
-        ),
-    }
-    blog_stats["status"] = get_status(blog_stats["date"], 7)
-
-    # Forum stats
-    forum_stats = {
-        "topics": ForumTopic.objects.count(),
-        "replies": ForumReply.objects.count(),
-        "date": ForumTopic.objects.order_by("-created_at").first().created_at if ForumTopic.objects.exists() else None,
-    }
-    forum_stats["status"] = get_status(forum_stats["date"], 1)  # 1 day threshold
-
-    # Course stats
-    course_stats = {
-        "active": Course.objects.filter(status="published").count(),
-        "students": Enrollment.objects.filter(status="approved").count(),
-        "date": Course.objects.order_by("-created_at").first().created_at if Course.objects.exists() else None,
-    }
-    course_stats["status"] = get_status(course_stats["date"], 30)  # 1 month threshold
-
-    # User stats
-    user_stats = {
-        "total": User.objects.count(),
-        "active": User.objects.filter(last_login__gte=month_ago).count(),
-        "date": User.objects.order_by("-date_joined").first().date_joined if User.objects.exists() else None,
-    }
-
-    def get_status(date, threshold_days):
-        if not date:
-            return "danger"
-        days_since = (now - date).days
-        if days_since > threshold_days * 2:
-            return "danger"
-        elif days_since > threshold_days:
-            return "warning"
-        return "success"
-
-    # Calculate overall health score
-    connected_platforms = 0
-    healthy_platforms = 0
-    platforms_data = [
-        (blog_stats["date"], 7),  # Blog: 1 week threshold
-        (forum_stats["date"], 7),  # Forum: 1 week threshold
-        (course_stats["date"], 7),  # Courses: 1 week threshold
-        (user_stats["date"], 7),  # Users: 1 week threshold
-    ]
-
-    for date, threshold in platforms_data:
-        if date:
-            connected_platforms += 1
-            if get_status(date, threshold) != "danger":
-                healthy_platforms += 1
-
-    overall_score = int((healthy_platforms / max(connected_platforms, 1)) * 100)
-
-    # Get social media stats
-    social_stats = get_social_stats()
-    content_data = {
-        "blog": {
-            "stats": blog_stats,
-            "status": get_status(blog_stats["date"], 7),
-            "date": blog_stats["date"],
-        },
-        "forum": {
-            "stats": forum_stats,
-            "status": get_status(forum_stats["date"], 7),
-            "date": forum_stats["date"],
-        },
-        "courses": {
-            "stats": course_stats,
-            "status": get_status(course_stats["date"], 7),
-            "date": course_stats["date"],
-        },
-        "users": {
-            "stats": user_stats,
-            "status": get_status(user_stats["date"], 7),
-            "date": user_stats["date"],
-        },
-    }
-
-    # Add social media stats
-    content_data.update(social_stats)
-
-    return render(
-        request,
-        "web/dashboard/content_status.html",
-        {
-            "content_data": content_data,
-            "overall_score": overall_score,
-            "web_stats": web_stats,
-            "traffic_data": json.dumps(traffic_data),
-            "blog_stats": blog_stats,
-            "forum_stats": forum_stats,
-            "course_stats": course_stats,
-            "user_stats": user_stats,
-        },
-    )
-
-
-# Challenges views
-def current_weekly_challenge(request):
-    current_time = timezone.now()
-    weekly_challenge = Challenge.objects.filter(
-        challenge_type="weekly", start_date__lte=current_time, end_date__gte=current_time
-    ).first()
-
-    one_time_challenges = Challenge.objects.filter(
-        challenge_type="one_time", start_date__lte=current_time, end_date__gte=current_time
-    )
-    user_submissions = {}
-    if request.user.is_authenticated:
-        # Get all active challenges
-        all_challenges = []
-        if weekly_challenge:
-            all_challenges.append(weekly_challenge)
-            all_challenges.extend(list(one_time_challenges))
-
-        # Get all submissions for active challenges
-        if all_challenges:
-            submissions = ChallengeSubmission.objects.filter(user=request.user, challenge__in=all_challenges)
-            # Create a dictionary mapping challenge IDs to submissions
-            for submission in submissions:
-                user_submissions[submission.challenge_id] = submission
-
-    return render(
-        request,
-        "web/current_weekly_challenge.html",
-        {
-            "current_challenge": weekly_challenge,
-            "one_time_challenges": one_time_challenges,
-            "user_submissions": user_submissions if request.user.is_authenticated else {},
-        },
-    )
-
-
-def challenge_detail(request, challenge_id):
-    try:
-        challenge = get_object_or_404(Challenge, id=challenge_id)
-        submissions = ChallengeSubmission.objects.filter(challenge=challenge)
-        # Check if the current user has submitted this challenge
-        user_submission = None
-        if request.user.is_authenticated:
-            user_submission = ChallengeSubmission.objects.filter(user=request.user, challenge=challenge).first()
-
-        return render(
-            request,
-            "web/challenge_detail.html",
-            {"challenge": challenge, "submissions": submissions, "user_submission": user_submission},
-        )
-    except Http404:
-        # Redirect to weekly challenges list if specific challenge not found
-        messages.info(request, "Challenge not found. Returning to challenges list.")
-        return redirect("current_weekly_challenge")
-
-
-@login_required
-def challenge_submit(request, challenge_id):
-    challenge = get_object_or_404(Challenge, id=challenge_id)
-    # Check if the user has already submitted this challenge
-    existing_submission = ChallengeSubmission.objects.filter(user=request.user, challenge=challenge).first()
-
-    if existing_submission:
-        return redirect("challenge_detail", challenge_id=challenge_id)
-
-    if request.method == "POST":
-        form = ChallengeSubmissionForm(request.POST)
-        if form.is_valid():
-            submission = form.save(commit=False)
-            submission.user = request.user
-            submission.challenge = challenge
-            submission.save()
-            messages.success(request, "Your submission has been recorded!")
-            return redirect("challenge_detail", challenge_id=challenge_id)
-    else:
-        form = ChallengeSubmissionForm()
-
-    return render(request, "web/challenge_submit.html", {"challenge": challenge, "form": form})
-
-
-@require_GET
-def fetch_video_title(request):
-    """
-    Fetch video title from a URL with proper security measures to prevent SSRF attacks.
-    """
-    url = request.GET.get("url")
-    if not url:
-        return JsonResponse({"error": "URL parameter is required"}, status=400)
-
-    # Validate URL
-    try:
-        parsed_url = urlparse(url)
-
-        # Check for scheme - only allow http and https
-        if parsed_url.scheme not in ["http", "https"]:
-            return JsonResponse({"error": "Invalid URL scheme. Only HTTP and HTTPS are supported."}, status=400)
-
-        # Check for private/internal IP addresses
-        if parsed_url.netloc:
-            hostname = parsed_url.netloc.split(":")[0]
-
-            # Block localhost variations and common internal domains
-            blocked_hosts = [
-                "localhost",
-                "127.0.0.1",
-                "0.0.0.0",
-                "internal",
-                "intranet",
-                "local",
-                "lan",
-                "corp",
-                "private",
-                "::1",
-            ]
-
-            if any(blocked in hostname.lower() for blocked in blocked_hosts):
-                return JsonResponse({"error": "Access to internal networks is not allowed"}, status=403)
-
-            # Resolve hostname to IP and check if it's private
-            try:
-                ip_address = socket.gethostbyname(hostname)
-                ip_obj = ipaddress.ip_address(ip_address)
-
-                # Check if the IP is private/internal
-                if ip_obj.is_private or ip_obj.is_loopback or ip_obj.is_link_local or ip_obj.is_multicast:
-                    return JsonResponse({"error": "Access to internal/private networks is not allowed"}, status=403)
-            except (socket.gaierror, ValueError):
-                # If hostname resolution fails or IP parsing fails, continue
-                pass
-
-    except Exception as e:
-        return JsonResponse({"error": f"Invalid URL format: {str(e)}"}, status=400)
-
-    # Set a timeout to prevent hanging requests
-    timeout = 5  # seconds
-
-    try:
-        # Only allow HEAD and GET methods with limited redirects
-        response = requests.get(
-            url,
-            timeout=timeout,
-            allow_redirects=True,
-            headers={
-                "User-Agent": "Educational-Website-Validator/1.0",
-            },
-        )
-        response.raise_for_status()
-
-        # Extract title from response headers or content
-        title = response.headers.get("title", "")
-        if not title:
-            # Try to extract title from HTML content
-            content = response.text
-            title_match = re.search(r"(.*?)", content, re.IGNORECASE | re.DOTALL)
-            title = title_match.group(1).strip() if title_match else "Untitled Video"
-
-            # Sanitize the title
-            title = html.escape(title)
-
-        return JsonResponse({"title": title})
-
-    except requests.RequestException as e:
-        logger.error(f"Error fetching video title from {url}: {str(e)}")
-        return JsonResponse({"error": f"Failed to fetch video title: {str(e)}"}, status=500)
-    except Exception as e:
-        logger.error(f"Unexpected error fetching video title from {url}: {str(e)}")
-        return JsonResponse({"error": "An unexpected error occurred while fetching the title"}, status=500)
-
-
-def get_referral_stats():
-    """Get statistics for top referrers."""
-    return (
-        Profile.objects.annotate(
-            total_signups=Count("referrals"),
-            total_enrollments=Count(
-                "referrals__user__enrollments", filter=Q(referrals__user__enrollments__status="approved")
-            ),
-            total_clicks=Count(
-                "referrals__user__webrequest", filter=Q(referrals__user__webrequest__path__contains="ref=")
-            ),
-        )
-        .filter(total_signups__gt=0)
-        .order_by("-total_signups")[:10]
-    )
-
-
-def referral_leaderboard(request):
-    """Display the referral leaderboard."""
-    top_referrers = get_referral_stats()
-    return render(request, "web/referral_leaderboard.html", {"top_referrers": top_referrers})
-
-
-# Goods Views
-class GoodsListView(LoginRequiredMixin, generic.ListView):
-    model = Goods
-    template_name = "goods/goods_list.html"
-    context_object_name = "products"
-
-    def get_queryset(self):
-        return Goods.objects.filter(storefront__teacher=self.request.user)
-
-
-class GoodsDetailView(generic.DetailView):
-    model = Goods
-    template_name = "goods/goods_detail.html"
-    context_object_name = "product"
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-        context["product_images"] = self.object.goods_images.all()  # Get all images related to the product
-        context["other_products"] = Goods.objects.exclude(pk=self.object.pk)[:12]  # Fetch other products
-        view_data = WebRequest.objects.filter(path=self.request.path).aggregate(total_views=Coalesce(Sum("count"), 0))
-        context["view_count"] = view_data["total_views"]
-
-        # Add cart count for each product
-        products_with_cart_count = []
-        for product in context["other_products"]:
-            product.cart_count = product.cart_items.count()
-            products_with_cart_count.append(product)
-
-        context["other_products"] = products_with_cart_count
-
-        return context
-
-
-class GoodsCreateView(LoginRequiredMixin, UserPassesTestMixin, generic.CreateView):
-    model = Goods
-    form_class = GoodsForm
-    template_name = "goods/goods_form.html"
-
-    def test_func(self):
-        return hasattr(self.request.user, "storefront")
-
-    def form_valid(self, form):
-        form.instance.storefront = self.request.user.storefront
-        images = self.request.FILES.getlist("images")
-        product_type = form.cleaned_data.get("product_type")
-
-        # Validate digital product images
-        if product_type == "digital" and not images:
-            form.add_error(None, "Digital products require at least one image")
-            return self.form_invalid(form)
-
-        # Validate image constraints
-        if len(images) > 8:
-            form.add_error(None, "Maximum 8 images allowed")
-            return self.form_invalid(form)
-
-        for img in images:
-            if img.size > 5 * 1024 * 1024:
-                form.add_error(None, f"{img.name} exceeds 5MB size limit")
-                return self.form_invalid(form)
-
-        # Save main product first
-        super().form_valid(form)
-
-        # Save images after product creation
-        for image_file in images:
-            ProductImage.objects.create(goods=self.object, image=image_file)
-
-        return render(self.request, "goods/goods_create_success.html", {"product": self.object})
-
-    def form_invalid(self, form):
-        messages.error(self.request, f"Creation failed: {form.errors.as_text()}")
-        return super().form_invalid(form)
-
-    def get_success_url(self):
-        return reverse("goods_list")
-
-
-class GoodsUpdateView(LoginRequiredMixin, UserPassesTestMixin, generic.UpdateView):
-    model = Goods
-    form_class = GoodsForm
-    template_name = "goods/goods_update.html"
-
-    # Filter by user's products only
-    def get_queryset(self):
-        return Goods.objects.filter(storefront__teacher=self.request.user)
-
-    # Verify ownership
-    def test_func(self):
-        return self.get_object().storefront.teacher == self.request.user
-
-    def get_success_url(self):
-        return reverse("goods_list")
-
-
-class GoodsDeleteView(LoginRequiredMixin, UserPassesTestMixin, DeleteView):
-    model = Goods
-    template_name = "goods/goods_confirm_delete.html"
-    success_url = reverse_lazy("goods_list")
-
-    def test_func(self):
-        return self.request.user == self.get_object().storefront.teacher
-
-
-def add_goods_to_cart(request, pk):
-    """Add a product (goods) to the cart."""
-    product = get_object_or_404(Goods, pk=pk)
-
-    # Prevent adding out-of-stock items
-    if product.stock is None or product.stock <= 0:
-        messages.error(request, f"{product.name} is out of stock and cannot be added to cart.")
-        return redirect("goods_detail", pk=pk)  # Redirect back to product page
-
-    cart = get_or_create_cart(request)
-    cart_item, created = CartItem.objects.get_or_create(cart=cart, goods=product, defaults={"session": None})
-
-    if created:
-        messages.success(request, f"{product.name} added to cart.")
-    else:
-        messages.info(request, f"{product.name} is already in your cart.")
-
-    return redirect("cart_view")
-
-
-class GoodsListingView(ListView):
-    model = Goods
-    template_name = "goods/goods_listing.html"
-    context_object_name = "products"
-    paginate_by = 15
-
-    def get_queryset(self):
-        queryset = Goods.objects.all()
-        store_name = self.request.GET.get("store_name")
-        product_type = self.request.GET.get("product_type")
-        category = self.request.GET.get("category")
-        min_price = self.request.GET.get("min_price")
-        max_price = self.request.GET.get("max_price")
-
-        if store_name:
-            queryset = queryset.filter(storefront__name__icontains=store_name)
-        if product_type:
-            queryset = queryset.filter(product_type=product_type)
-        if category:
-            queryset = queryset.filter(category__icontains=category)
-        if min_price:
-            queryset = queryset.filter(price__gte=min_price)
-        if max_price:
-            queryset = queryset.filter(price__lte=max_price)
-
-        return queryset
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-        context["store_names"] = Storefront.objects.values_list("name", flat=True).distinct()
-        context["categories"] = Goods.objects.values_list("category", flat=True).distinct()
-
-        # Add cart count for each product
-        products_with_cart_count = []
-        for product in context["products"]:
-            product.cart_count = product.cart_items.count()
-            products_with_cart_count.append(product)
-
-        context["products"] = products_with_cart_count
-
-        return context
-
-
-# Order Management
-class OrderManagementView(LoginRequiredMixin, UserPassesTestMixin, generic.ListView):
-    model = Order
-    template_name = "orders/order_management.html"
-    context_object_name = "orders"
-    paginate_by = 20
-
-    def test_func(self):
-        storefront = get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"])
-        return self.request.user == storefront.teacher
-
-    def get_queryset(self):
-        queryset = Order.objects.filter(items__goods__storefront__store_slug=self.kwargs["store_slug"]).distinct()
-
-        # Get status from request and filter
-        selected_status = self.request.GET.get("status")
-        if selected_status and selected_status != "all":
-            queryset = queryset.filter(status=selected_status)
-
-        return queryset
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-        context["statuses"] = Order.STATUS_CHOICES  # Directly from model
-        context["selected_status"] = self.request.GET.get("status", "")
-        return context
-
-
-class OrderDetailView(LoginRequiredMixin, generic.DetailView):
-    model = Order
-    template_name = "orders/order_detail.html"
-    context_object_name = "order"
-
-
-@login_required
-@require_POST
-def update_order_status(request, item_id):
-    order = get_object_or_404(Order, id=item_id, user=request.user)
-    new_status = request.POST.get("status").lower()  # Convert to lowercase for consistency
-
-    # Define allowed statuses inside the function
-    VALID_STATUSES = ["draft", "pending", "processing", "shipped", "completed", "cancelled", "refunded"]
-
-    if new_status not in VALID_STATUSES:
-        messages.error(request, "Invalid status.")
-        return redirect("order_detail", pk=item_id)
-
-    order.status = new_status
-    order.save()
-    messages.success(request, "Order status updated successfully.")
-    return redirect("order_detail", pk=item_id)
-
-
-# Analytics
-class StoreAnalyticsView(LoginRequiredMixin, UserPassesTestMixin, generic.TemplateView):
-    template_name = "analytics/analytics_dashboard.html"
-
-    def test_func(self):
-        storefront = get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"])
-        return self.request.user == storefront.teacher
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-        storefront = get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"])
-
-        # Store-specific analytics
-        orders = Order.objects.filter(storefront=storefront, status="completed")
-
-        context.update(
-            {
-                "total_sales": orders.count(),
-                "total_revenue": orders.aggregate(Sum("total_price"))["total_price__sum"] or 0,
-                "top_products": OrderItem.objects.filter(order__storefront=storefront)
-                .values("goods__name")
-                .annotate(total_sold=Sum("quantity"))
-                .order_by("-total_sold")[:5],
-                "storefront": storefront,
-            }
-        )
-        return context
-
-
-class AdminMerchAnalyticsView(LoginRequiredMixin, UserPassesTestMixin, generic.TemplateView):
-    template_name = "analytics/admin_analytics.html"
-
-    def test_func(self):
-        return self.request.user.is_staff
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-
-        # Platform-wide analytics
-        context.update(
-            {
-                "total_sales": Order.objects.filter(status="completed").count(),
-                "total_revenue": Order.objects.filter(status="completed").aggregate(Sum("total_price"))[
-                    "total_price__sum"
-                ]
-                or 0,
-                "top_storefronts": Storefront.objects.annotate(total_sales=Count("goods__orderitem")).order_by(
-                    "-total_sales"
-                )[:5],
-            }
-        )
-        return context
-
-
-@login_required
-def sales_analytics(request):
-    """View for displaying sales analytics."""
-    storefront = get_object_or_404(Storefront, teacher=request.user)
-
-    # Get completed orders for this storefront
-    orders = Order.objects.filter(storefront=storefront, status="completed")
-
-    # Calculate metrics
-    total_revenue = orders.aggregate(total=Sum("total_price"))["total"] or 0
-    total_orders = orders.count()
-
-    # Placeholder conversion rate (to be implemented properly later)
-    conversion_rate = 0.00  # Temporary placeholder
-
-    # Best selling products
-    best_selling_products = (
-        OrderItem.objects.filter(order__storefront=storefront)
-        .values("goods__name")
-        .annotate(total_sold=Sum("quantity"))
-        .order_by("-total_sold")[:5]
-    )
-
-    context = {
-        "total_revenue": total_revenue,
-        "total_orders": total_orders,
-        "conversion_rate": conversion_rate,
-        "best_selling_products": best_selling_products,
-    }
-    return render(request, "analytics/analytics_dashboard.html", context)
-
-
-@login_required
-def sales_data(request):
-    # Get the user's storefront
-    storefront = get_object_or_404(Storefront, teacher=request.user)
-
-    # Define valid statuses for metrics (e.g., include "completed" and "shipped")
-    valid_statuses = ["completed", "shipped"]
-    orders = Order.objects.filter(storefront=storefront, status__in=valid_statuses)
-
-    # Calculate total revenue
-    total_revenue = orders.aggregate(total=Sum("total_price"))["total"] or 0
-
-    # Calculate total orders
-    total_orders = orders.count()
-
-    # Calculate conversion rate (orders / visits * 100)
-    total_visits = WebRequest.objects.filter(path__contains="ref=").count()  # Adjust based on visit tracking
-    conversion_rate = (total_orders / total_visits * 100) if total_visits > 0 else 0.00
-
-    # Get best-selling products
-    best_selling_products = (
-        OrderItem.objects.filter(order__storefront=storefront, order__status__in=valid_statuses)
-        .values("goods__name")
-        .annotate(total_sold=Sum("quantity"))
-        .order_by("-total_sold")[:5]
-    )
-
-    # Prepare response data
-    data = {
-        "total_revenue": float(total_revenue),
-        "total_orders": total_orders,
-        "conversion_rate": round(conversion_rate, 2),
-        "best_selling_products": list(best_selling_products),
-    }
-    return JsonResponse(data)
-
-
-class StorefrontCreateView(LoginRequiredMixin, CreateView):
-    model = Storefront
-    form_class = StorefrontForm
-    template_name = "storefront/storefront_form.html"
-    success_url = "/dashboard/teacher/"
-
-    def dispatch(self, request, *args, **kwargs):
-        if Storefront.objects.filter(teacher=request.user).exists():
-            return redirect("storefront_update", store_slug=request.user.storefront.store_slug)
-        return super().dispatch(request, *args, **kwargs)
-
-    def form_valid(self, form):
-        form.instance.teacher = self.request.user  # Set the teacher field to the current user
-        return super().form_valid(form)
-
-
-class StorefrontUpdateView(LoginRequiredMixin, UpdateView):
-    model = Storefront
-    form_class = StorefrontForm
-    template_name = "storefront/storefront_form.html"
-    success_url = "/dashboard/teacher/"
-
-    def get_object(self):
-        return get_object_or_404(Storefront, teacher=self.request.user)
-
-
-class StorefrontDetailView(LoginRequiredMixin, generic.DetailView):
-    model = Storefront
-    template_name = "storefront/storefront_detail.html"
-    context_object_name = "storefront"
-
-    def get_object(self):
-        return get_object_or_404(Storefront, store_slug=self.kwargs["store_slug"])
-
-
-def success_story_list(request):
-    """View for listing published success stories."""
-    success_stories = SuccessStory.objects.filter(status="published").order_by("-published_at")
-
-    # Paginate results
-    paginator = Paginator(success_stories, 9)  # 9 stories per page
-    page_number = request.GET.get("page", 1)
-    page_obj = paginator.get_page(page_number)
-
-    context = {
-        "success_stories": page_obj,
-        "is_paginated": paginator.num_pages > 1,
-        "page_obj": page_obj,
-    }
-    return render(request, "success_stories/list.html", context)
-
-
-def success_story_detail(request, slug):
-    """View for displaying a single success story."""
-    success_story = get_object_or_404(SuccessStory, slug=slug, status="published")
-
-    # Get related success stories (same author or similar content)
-    related_stories = (
-        SuccessStory.objects.filter(status="published").exclude(id=success_story.id).order_by("-published_at")[:3]
-    )
-
-    context = {
-        "success_story": success_story,
-        "related_stories": related_stories,
-    }
-    return render(request, "success_stories/detail.html", context)
-
-
-@login_required
-def create_success_story(request):
-    """View for creating a new success story."""
-    if request.method == "POST":
-        form = SuccessStoryForm(request.POST, request.FILES)
-        if form.is_valid():
-            success_story = form.save(commit=False)
-            success_story.author = request.user
-            success_story.save()
-            messages.success(request, "Success story created successfully!")
-            return redirect("success_story_detail", slug=success_story.slug)
-    else:
-        form = SuccessStoryForm()
-
-    context = {
-        "form": form,
-    }
-    return render(request, "success_stories/create.html", context)
-
-
-@login_required
-def edit_success_story(request, slug):
-    """View for editing an existing success story."""
-    success_story = get_object_or_404(SuccessStory, slug=slug, author=request.user)
-
-    if request.method == "POST":
-        form = SuccessStoryForm(request.POST, request.FILES, instance=success_story)
-        if form.is_valid():
-            form.save()
-            messages.success(request, "Success story updated successfully!")
-            return redirect("success_story_detail", slug=success_story.slug)
-    else:
-        form = SuccessStoryForm(instance=success_story)
-
-    context = {
-        "form": form,
-        "success_story": success_story,
-        "is_edit": True,
-    }
-    return render(request, "success_stories/create.html", context)
-
-
-@login_required
-def delete_success_story(request, slug):
-    """View for deleting a success story."""
-    success_story = get_object_or_404(SuccessStory, slug=slug, author=request.user)
-
-    if request.method == "POST":
-        success_story.delete()
-        messages.success(request, "Success story deleted successfully!")
-        return redirect("success_story_list")
-
-    context = {
-        "success_story": success_story,
-    }
-    return render(request, "success_stories/delete_confirm.html", context)
-
-
-def gsoc_landing_page(request):
-    """
-    Renders the GSOC landing page with top GitHub contributors
-    based on merged pull requests
-    """
-    import logging
-
-    import requests
-    from django.conf import settings
-
-    # Initialize an empty list for contributors in case the GitHub API call fails
-    top_contributors = []
-
-    # GitHub API URL for the education-website repository
-    github_repo_url = "https://api.github.com/repos/alphaonelabs/education-website"
-
-    # Users to exclude from the contributor list (bots and automated users)
-    excluded_users = ["A1L13N", "dependabot[bot]"]
-
-    try:
-        # Fetch contributors from GitHub API
-        headers = {}
-        # Check if GitHub token is configured
-        if hasattr(settings, "GITHUB_TOKEN") and settings.GITHUB_TOKEN:
-            headers["Authorization"] = f"token {settings.GITHUB_TOKEN}"
-
-        # Get all closed pull requests - we'll filter for merged ones in code
-        # The GitHub API doesn't have a direct 'merged' filter in the query params
-        # so we get all closed PRs and then check the 'merged_at' field
-        pull_requests_response = requests.get(
-            f"{github_repo_url}/pulls",
-            params={
-                "state": "closed",  # closed PRs could be either merged or just closed
-                "sort": "updated",
-                "direction": "desc",
-                "per_page": 100,
-            },
-            headers=headers,
-            timeout=5,
-        )
-
-        # Check for rate limiting
-        if pull_requests_response.status_code == 403 and "X-RateLimit-Remaining" in pull_requests_response.headers:
-            remaining = pull_requests_response.headers.get("X-RateLimit-Remaining")
-            if remaining == "0":
-                reset_time = int(pull_requests_response.headers.get("X-RateLimit-Reset", 0))
-                reset_datetime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(reset_time))
-                logging.warning(f"GitHub API rate limit exceeded. Resets at {reset_datetime}")
-
-        if pull_requests_response.status_code == 200:
-            pull_requests = pull_requests_response.json()
-
-            # Create a map of contributors with their PR count
-            contributor_stats = defaultdict(
-                lambda: {"merged_pr_count": 0, "avatar_url": "", "profile_url": "", "prs_url": ""}
-            )
-
-            # Process each pull request
-            for pr in pull_requests:
-                # Check if the PR was merged
-                if pr.get("merged_at"):
-                    username = pr["user"]["login"]
-
-                    # Skip excluded users
-                    if username in excluded_users:
-                        continue
-
-                    contributor_stats[username]["merged_pr_count"] += 1
-                    contributor_stats[username]["avatar_url"] = pr["user"]["avatar_url"]
-                    contributor_stats[username]["profile_url"] = pr["user"]["html_url"]
-                    # Add a direct link to the user's PRs for this repository
-                    base_url = "https://github.com/alphaonelabs/education-website/pulls"
-                    query = f"?q=is:pr+author:{username}+is:merged"
-                    contributor_stats[username]["prs_url"] = base_url + query
-                    contributor_stats[username]["username"] = username
-
-            # Convert to list and sort by PR count
-            top_contributors = [v for k, v in contributor_stats.items()]
-            top_contributors.sort(key=lambda x: x["merged_pr_count"], reverse=True)
-
-            # Get top 10 contributors
-            top_contributors = top_contributors[:10]
-
-    except Exception as e:
-        logging.error(f"Error fetching GitHub contributors: {str(e)}")
-
-    context = {"top_contributors": top_contributors}
-
-    return render(request, "gsoc_landing_page.html", context)
-
-
-def whiteboard(request):
-    return render(request, "whiteboard.html")
-
-
-def graphing_calculator(request):
-    return render(request, "graphing_calculator.html")
-
-
-def meme_list(request):
-    memes = Meme.objects.all().order_by("-created_at")
-    subjects = Subject.objects.filter(memes__isnull=False).distinct()
-    # Filter by subject if provided
-    subject_filter = request.GET.get("subject")
-    if subject_filter:
-        memes = memes.filter(subject__slug=subject_filter)
-    paginator = Paginator(memes, 12)  # Show 12 memes per page
-    page_number = request.GET.get("page", 1)
-    page_obj = paginator.get_page(page_number)
-
-    return render(request, "memes.html", {"memes": page_obj, "subjects": subjects, "selected_subject": subject_filter})
-
-
-def meme_detail(request: HttpRequest, slug: str) -> HttpResponse:
-    meme = get_object_or_404(Meme, slug=slug)
-    return render(request, "meme_detail.html", {"meme": meme})
-
-
-@login_required
-def add_meme(request):
-    if request.method == "POST":
-        form = MemeForm(request.POST, request.FILES)
-        if form.is_valid():
-            meme = form.save(commit=False)  # The form handles subject creation logic internally
-            meme.uploader = request.user
-            meme.save()
-            messages.success(request, "Your meme has been uploaded successfully!")
-            return redirect("meme_list")
-    else:
-        form = MemeForm()
-    subjects = Subject.objects.all().order_by("name")
-    return render(request, "add_meme.html", {"form": form, "subjects": subjects})
-
-
-@login_required
-def team_goals(request):
-    """List all team goals the user is part of or has created."""
-    user_goals = (
-        TeamGoal.objects.filter(Q(creator=request.user) | Q(members__user=request.user))
-        .distinct()
-        .order_by("-created_at")
-    )
-
-    paginator = Paginator(user_goals, 10)
-    page_number = request.GET.get("page")
-    page_obj = paginator.get_page(page_number)
-
-    pending_invites = TeamInvite.objects.filter(recipient=request.user, status="pending").select_related(
-        "goal", "sender"
-    )
-
-    context = {
-        "goals": page_obj,
-        "pending_invites": pending_invites,
-        "is_paginated": paginator.num_pages > 1,
-    }
-    return render(request, "teams/list.html", context)
-
-
-@login_required
-def create_team_goal(request):
-    """Create a new team goal."""
-    if request.method == "POST":
-        form = TeamGoalForm(request.POST)
-        if form.is_valid():
-            with transaction.atomic():
-                goal = form.save(commit=False)
-                goal.creator = request.user
-                goal.save()
-
-                # Add creator as a member
-                TeamGoalMember.objects.create(team_goal=goal, user=request.user, role="leader")
-
-                messages.success(request, "Team goal created successfully!")
-                return redirect("team_goal_detail", goal_id=goal.id)
-    else:
-        form = TeamGoalForm()
-
-    return render(request, "teams/create.html", {"form": form})
-
-
-@login_required
-def team_goal_detail(request, goal_id):
-    """View and manage a specific team goal."""
-    goal = get_object_or_404(TeamGoal.objects.prefetch_related("members__user"), id=goal_id)
-
-    # Check if user has access to this goal
-    if not (goal.creator == request.user or goal.members.filter(user=request.user).exists()):
-        messages.error(request, "You do not have access to this team goal.")
-        return redirect("team_goals")
-
-    # Get existing team members to exclude from invitation
-    existing_members = goal.members.values_list("user_id", flat=True)
-
-    # Handle inviting new members
-    if request.method == "POST":
-        form = TeamInviteForm(request.POST)
-        if form.is_valid():
-            # Check for existing invites using the validated User object
-            if TeamInvite.objects.filter(
-                goal__id=goal.id, recipient=form.cleaned_data["recipient"]  # Changed to use User object
-            ).exists():
-                messages.warning(request, "An invite for this user is already pending.")
-                return redirect("team_goal_detail", goal_id=goal.id)
-            invite = form.save(commit=False)
-            invite.sender = request.user
-            invite.goal = goal
-            invite.save()
-            messages.success(request, f"Invitation sent to {invite.recipient.email}!")
-            notify_team_invite(invite)
-            return redirect("team_goal_detail", goal_id=goal.id)
-
-    else:
-        form = TeamInviteForm()
-
-    # Get users that can be invited (exclude existing members and the creator)
-    available_users = User.objects.exclude(id__in=list(existing_members) + [goal.creator.id]).values(
-        "id", "username", "email"
-    )
-
-    context = {
-        "goal": goal,
-        "invite_form": form,
-        "user_is_leader": goal.members.filter(user=request.user, role="leader").exists(),
-        "available_users": available_users,
-    }
-    return render(request, "teams/detail.html", context)
-
-
-@login_required
-def accept_team_invite(request, invite_id):
-    """Accept a team invitation."""
-    invite = get_object_or_404(
-        TeamInvite.objects.select_related("goal"), id=invite_id, recipient=request.user, status="pending"
-    )
-
-    # Create team member using get_or_create to avoid race conditions
-    member, created = TeamGoalMember.objects.get_or_create(
-        team_goal=invite.goal, user=request.user, defaults={"role": "member"}
-    )
-
-    if not created:
-        messages.info(request, f"You are already a member of {invite.goal.title}.")
-    else:
-        messages.success(request, f"You have joined {invite.goal.title}!")
-
-    # Update invite status
-    invite.status = "accepted"
-    invite.responded_at = timezone.now()
-    invite.save()
-
-    notify_team_invite_response(invite)
-    return redirect("team_goal_detail", goal_id=invite.goal.id)
-
-
-@login_required
-def decline_team_invite(request, invite_id):
-    """Decline a team invitation."""
-    invite = get_object_or_404(TeamInvite, id=invite_id, recipient=request.user, status="pending")
-
-    invite.status = "declined"
-    invite.responded_at = timezone.now()
-    invite.save()
-
-    notify_team_invite_response(invite)
-    messages.info(request, f"You have declined to join {invite.goal.title}.")
-    return redirect("team_goals")
-
-
-@login_required
-def edit_team_goal(request, goal_id):
-    """Edit an existing team goal."""
-    goal = get_object_or_404(TeamGoal, id=goal_id)
-
-    # Check if user is the creator or a leader
-    if not (goal.creator == request.user or goal.members.filter(user=request.user, role="leader").exists()):
-        messages.error(request, "You don't have permission to edit this team goal.")
-        return redirect("team_goal_detail", goal_id=goal_id)
-
-    if request.method == "POST":
-        form = TeamGoalForm(request.POST, instance=goal)
-        if form.is_valid():
-            # Validate that deadline is not in the past
-            if form.cleaned_data["deadline"] < timezone.now():
-                form.add_error("deadline", "Deadline cannot be in the past.")
-                context = {
-                    "form": form,
-                    "goal": goal,
-                    "is_edit": True,
-                }
-                return render(request, "teams/create.html", context)
-            form.save()
-            messages.success(request, "Team goal updated successfully!")
-            return redirect("team_goal_detail", goal_id=goal.id)
-    else:
-        form = TeamGoalForm(instance=goal)
-
-    context = {
-        "form": form,
-        "goal": goal,
-        "is_edit": True,
-    }
-    return render(request, "teams/create.html", context)
-
-
-@login_required
-def mark_team_contribution(request, goal_id):
-    """Allow a team member to mark their contribution as complete."""
-    goal = get_object_or_404(TeamGoal, id=goal_id)
-
-    # Find the current user's membership in this goal
-    member = goal.members.filter(user=request.user).first()
-
-    if not member:
-        messages.error(request, "You are not a member of this team goal.")
-        return redirect("team_goal_detail", goal_id=goal_id)
-
-    if member.completed:
-        messages.info(request, "Your contribution is already marked as complete.")
-        return redirect("team_goal_detail", goal_id=goal_id)
-
-    # Mark the user's contribution as complete
-    member.mark_completed()
-    messages.success(request, "Your contribution has been marked as complete.")
-    notify_team_goal_completion(goal, request.user)
-    return redirect("team_goal_detail", goal_id=goal_id)
-
-
-@login_required
-def remove_team_member(request, goal_id, member_id):
-    """Remove a member from a team goal."""
-    goal = get_object_or_404(TeamGoal, id=goal_id)
-
-    # Check if user is the creator or a leader
-    if not (goal.creator == request.user or goal.members.filter(user=request.user, role="leader").exists()):
-        messages.error(request, "You don't have permission to remove members.")
-        return redirect("team_goal_detail", goal_id=goal_id)
-
-    member = get_object_or_404(TeamGoalMember, id=member_id, team_goal=goal)
-
-    # Prevent removing the creator
-    if member.user == goal.creator:
-        messages.error(request, "The team creator cannot be removed.")
-        return redirect("team_goal_detail", goal_id=goal_id)
-
-    member.delete()
-    messages.success(request, f"{member.user.username} has been removed from the team.")
-    return redirect("team_goal_detail", goal_id=goal_id)
-
-
-@login_required
-def submit_team_proof(request, team_goal_id):
-    team_goal = get_object_or_404(TeamGoal, id=team_goal_id)
-    member = get_object_or_404(TeamGoalMember, team_goal=team_goal, user=request.user)
-
-    if request.method == "POST":
-        form = TeamGoalCompletionForm(request.POST, request.FILES, instance=member)
-        if form.is_valid():
-            form.save()
-            if not member.completed:
-                member.mark_completed()
-            return redirect("team_goal_detail", goal_id=team_goal.id)  # Fixed here
-
-    else:
-        form = TeamGoalCompletionForm(instance=member)
-
-    return render(request, "teams/submit_proof.html", {"form": form, "team_goal": team_goal})
-
-
-@login_required
-def delete_team_goal(request, goal_id):
-    """Delete a team goal."""
-    goal = get_object_or_404(TeamGoal, id=goal_id)
-
-    # Only creator can delete the goal
-    if request.user != goal.creator:
-        messages.error(request, "Only the creator can delete this team goal.")
-        return redirect("team_goal_detail", goal_id=goal_id)
-
-    if request.method == "POST":
-        goal.delete()
-        messages.success(request, "Team goal has been deleted.")
-        return redirect("team_goals")
-
-    return render(request, "teams/delete_confirm.html", {"goal": goal})
-
-
-@login_required
-def virtual_classroom_list(request):
-    """View to list all virtual classrooms for the current user."""
-    classrooms = VirtualClassroom.objects.filter(teacher=request.user)
-    return render(
-        request,
-        "virtual_classroom/list.html",
-        {"classrooms": classrooms, "user": request.user},  # Pass the user object which includes the profile
-    )
-
-
-@login_required
-@require_POST
-def join_global_virtual_classroom(request):
-    """Join (or create) the global virtual classroom and redirect to it."""
-
-    teacher = User.objects.filter(is_staff=True, is_active=True).order_by("-is_superuser", "date_joined").first()
-
-    if not teacher:
-        messages.error(request, "No teacher is available to host the global virtual classroom yet.")
-        return redirect("index")
-
-    classroom = (
-        VirtualClassroom.objects.filter(name__iexact="Global Virtual Classroom", course__isnull=True)
-        .order_by("-created_at")
-        .first()
-    )
-
-    if not classroom:
-        classroom = VirtualClassroom.objects.create(
-            name="Global Virtual Classroom",
-            teacher=teacher,
-            is_active=True,
-            max_students=200,
-        )
-
-    # Ensure customization exists
-    VirtualClassroomCustomization.objects.get_or_create(classroom=classroom)
-
-    # Add the current user as a participant
-    VirtualClassroomParticipant.objects.get_or_create(user=request.user, classroom=classroom)
-
-    messages.success(request, "You're in! Welcome to the global virtual classroom.")
-    return redirect("virtual_classroom_detail", classroom_id=classroom.id)
-
-
-@login_required
-def virtual_classroom_create(request):
-    """View to create a new virtual classroom."""
-    if request.method == "POST":
-        form = VirtualClassroomForm(request.POST, user=request.user)
-        if form.is_valid():
-            classroom = form.save(commit=False)
-            classroom.teacher = request.user
-            classroom.save()
-
-            # Create default customization settings
-            VirtualClassroomCustomization.objects.get_or_create(
-                classroom=classroom,
-                defaults={
-                    "wall_color": "#E6E2D7",
-                    "floor_color": "#C7B299",
-                    "desk_color": "#8B4513",
-                    "chair_color": "#4B0082",
-                    "board_color": "#005C53",
-                    "number_of_rows": 5,
-                    "desks_per_row": 6,
-                    "has_plants": True,
-                    "has_windows": True,
-                    "has_bookshelf": True,
-                    "has_clock": True,
-                    "has_carpet": True,
-                },
-            )
-
-            messages.success(request, "Virtual classroom created successfully!")
-            return redirect("virtual_classroom_customize", classroom_id=classroom.id)
-    else:
-        form = VirtualClassroomForm(user=request.user)
-
-    return render(request, "virtual_classroom/create.html", {"form": form})
-
-
-@login_required
-def virtual_classroom_customize(request, classroom_id):
-    """View to customize a virtual classroom."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id, teacher=request.user)
-
-    # Get or create customization settings
-    customization, created = VirtualClassroomCustomization.objects.get_or_create(classroom=classroom)
-
-    if request.method == "POST":
-        form = VirtualClassroomCustomizationForm(request.POST, instance=customization)
-        if form.is_valid():
-            form.save()
-            messages.success(request, "Classroom customization saved successfully!")
-            return redirect("virtual_classroom_detail", classroom_id=classroom.id)
-    else:
-        form = VirtualClassroomCustomizationForm(instance=customization)
-
-    return render(request, "virtual_classroom/customize.html", {"form": form, "classroom": classroom})
-
-
-@login_required
-def virtual_classroom_detail(request, classroom_id):
-    """View to display a virtual classroom."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id)
-
-    # Check if user is teacher or enrolled student
-    is_teacher = request.user == classroom.teacher
-    is_enrolled = False
-
-    if classroom.course:
-        # For classrooms with a course, check course enrollments
-        is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists()
-    else:
-        # For standalone classrooms, check VirtualClassroomParticipant table
-        is_enrolled = VirtualClassroomParticipant.objects.filter(classroom=classroom, user=request.user).exists()
-
-    if not (is_teacher or is_enrolled):
-        messages.error(request, "You do not have access to this virtual classroom.")
-        if classroom.course:
-            return redirect("course_detail", slug=classroom.course.slug)
-        else:
-            return redirect("virtual_classroom_list")
-
-    # Get or create customization settings to prevent DoesNotExist errors
-    customization, created = VirtualClassroomCustomization.objects.get_or_create(
-        classroom=classroom,
-        defaults={
-            "wall_color": "#E6E2D7",
-            "floor_color": "#C7B299",
-            "desk_color": "#8B4513",
-            "chair_color": "#4B0082",
-            "board_color": "#005C53",
-            "number_of_rows": 5,
-            "desks_per_row": 6,
-            "has_plants": True,
-            "has_windows": True,
-            "has_bookshelf": True,
-            "has_clock": True,
-            "has_carpet": True,
-        },
-    )
-
-    if request.method == "POST" and request.headers.get("X-Requested-With") == "XMLHttpRequest":
-        if not is_teacher:  # Only teachers can customize
-            return JsonResponse({"status": "error", "message": "Only teachers can customize the classroom"}, status=403)
-
-        try:
-            data = json.loads(request.body.decode("utf-8") or "{}")
-
-            # Update customization settings
-            customization.wall_color = data.get("wall_color", customization.wall_color)
-            customization.floor_color = data.get("floor_color", customization.floor_color)
-            customization.desk_color = data.get("desk_color", customization.desk_color)
-            customization.chair_color = data.get("chair_color", customization.chair_color)
-            customization.board_color = data.get("board_color", customization.board_color)
-            customization.number_of_rows = data.get("number_of_rows", customization.number_of_rows)
-            customization.desks_per_row = data.get("desks_per_row", customization.desks_per_row)
-            customization.has_plants = data.get("has_plants", customization.has_plants)
-            customization.has_windows = data.get("has_windows", customization.has_windows)
-            customization.has_bookshelf = data.get("has_bookshelf", customization.has_bookshelf)
-            customization.has_clock = data.get("has_clock", customization.has_clock)
-            customization.has_carpet = data.get("has_carpet", customization.has_carpet)
-
-            customization.save()
-            return JsonResponse({"status": "success"})
-        except json.JSONDecodeError:
-            return JsonResponse({"status": "error", "message": "Invalid JSON data"}, status=400)
-        except Exception:
-            # Log the detailed exception for debugging
-            logger.exception("Error in virtual_classroom_detail customization")
-            return JsonResponse({"status": "error", "message": "An internal error occurred"}, status=500)
-
-    # Get participants for the classroom
-    participants = VirtualClassroomParticipant.objects.filter(classroom=classroom).select_related("user")
-
-    return render(
-        request,
-        "virtual_classroom/index.html",
-        {
-            "classroom": classroom,
-            "customization": customization,
-            "is_teacher": is_teacher,
-            "is_enrolled": is_enrolled,
-            "participants": participants,
-        },
-    )
-
-
-@login_required
-def virtual_classroom_edit(request, classroom_id):
-    """View to edit a virtual classroom."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id, teacher=request.user)
-
-    if request.method == "POST":
-        form = VirtualClassroomForm(request.POST, instance=classroom, user=request.user)
-        if form.is_valid():
-            form.save()
-            messages.success(request, "Virtual classroom updated successfully!")
-            return redirect("virtual_classroom_detail", classroom_id=classroom.id)
-    else:
-        form = VirtualClassroomForm(instance=classroom, user=request.user)
-
-    return render(request, "virtual_classroom/edit.html", {"form": form, "classroom": classroom})
-
-
-@login_required
-def virtual_classroom_delete(request, classroom_id):
-    """View to delete a virtual classroom."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id, teacher=request.user)
-
-    if request.method == "POST":
-        classroom.delete()
-        messages.success(request, "Virtual classroom deleted successfully!")
-        return redirect("virtual_classroom_list")
-
-    return render(request, "virtual_classroom/delete.html", {"classroom": classroom})
-
-
-@login_required
-def classroom_blackboard(request, classroom_id):
-    """View for the classroom blackboard interaction."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id)
-
-    # Check if user is teacher or enrolled student
-    is_teacher = request.user == classroom.teacher
-    is_enrolled = False
-    if classroom.course:
-        is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists()
-
-    if not (is_teacher or is_enrolled):
-        messages.error(request, "You do not have access to this virtual classroom.")
-        return redirect("virtual_classroom_list")
-
-    return render(
-        request,
-        "virtual_classroom/blackboard.html",
-        {"classroom": classroom, "is_teacher": is_teacher, "is_enrolled": is_enrolled},
-    )
-
-
-@login_required
-def classroom_student_desk(request, classroom_id, seat_id):
-    """View for individual student desk interaction."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id)
-
-    # Check if user is teacher or enrolled student
-    is_teacher = request.user == classroom.teacher
-    is_enrolled = False
-    if classroom.course:
-        is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists()
-
-    if not (is_teacher or is_enrolled):
-        messages.error(request, "You do not have access to this virtual classroom.")
-        return redirect("virtual_classroom_list")
-
-    return render(
-        request,
-        "virtual_classroom/student_desk.html",
-        {"classroom": classroom, "seat_id": seat_id, "is_teacher": is_teacher, "is_enrolled": is_enrolled},
-    )
-
-
-@login_required
-@require_POST
-def reset_attendance(request, classroom_id):
-    """Reset today's attendance for a classroom."""
-    try:
-        classroom = get_object_or_404(VirtualClassroom, id=classroom_id)
-
-        # Check if user is the teacher
-        if request.user != classroom.teacher:
-            messages.error(request, "Only the teacher can reset attendance.")
-            return redirect("classroom_attendance", classroom_id=classroom_id)
-
-        # Get today's session and delete all attendance records
-        today = timezone.now().date()
-        today_start = timezone.make_aware(datetime.combine(today, datetime.min.time()))
-        today_end = timezone.make_aware(datetime.combine(today, datetime.max.time()))
-
-        if classroom.course:
-            # For classrooms with courses, find and delete attendance for today's session
-            session = Session.objects.filter(
-                course=classroom.course, start_time__range=(today_start, today_end)
-            ).first()
-
-            if session:
-                SessionAttendance.objects.filter(session=session).delete()
-        else:
-            # For classrooms without courses, find and delete standalone session attendance
-            session = Session.objects.filter(
-                title=f"Class on {today.strftime('%Y-%m-%d')}", start_time__range=(today_start, today_end)
-            ).first()
-
-            if session:
-                SessionAttendance.objects.filter(session=session).delete()
-
-        messages.success(request, "Today's attendance has been reset.")
-        return redirect("classroom_attendance", classroom_id=classroom_id)
-
-    except Exception:
-        messages.error(request, "An error occurred while resetting attendance.")
-        return redirect("classroom_attendance", classroom_id=classroom_id)
-
-
-@login_required
-def classroom_attendance(request, classroom_id):
-    """View for managing classroom attendance."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id)
-
-    # Check if user is teacher or enrolled student
-    is_teacher = request.user == classroom.teacher
-    is_enrolled = False
-
-    # Get all enrolled students
-    enrolled_students = []
-    if classroom.course:
-        is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists()
-        enrolled_students = (
-            User.objects.filter(enrollments__course=classroom.course, enrollments__status="approved")
-            .select_related("profile")
-            .order_by("first_name", "last_name")
-            .distinct()
-        )
-    else:
-        # For classrooms without a course, everyone is "enrolled"
-        is_enrolled = True
-        # Get users who are participants in this classroom (excluding teacher)
-        participant_user_ids = VirtualClassroomParticipant.objects.filter(classroom=classroom).values_list(
-            "user_id", flat=True
-        )
-
-        enrolled_students = (
-            User.objects.filter(id__in=participant_user_ids)
-            .exclude(id=classroom.teacher.id)
-            .select_related("profile")
-            .order_by("first_name", "last_name")
-            .distinct()
-        )
-
-    if not (is_teacher or is_enrolled):
-        messages.error(request, "You do not have access to this virtual classroom.")
-        return redirect("virtual_classroom_list")
-
-    # Get today's attendance records
-    today = timezone.now().date()
-    today_start = timezone.make_aware(datetime.combine(today, datetime.min.time()))
-    today_end = timezone.make_aware(datetime.combine(today, datetime.max.time()))
-
-    # Get today's session
-    if classroom.course:
-        session = Session.objects.filter(course=classroom.course, start_time__range=(today_start, today_end)).first()
-    else:
-        session = Session.objects.filter(
-            title=f"Class on {today.strftime('%Y-%m-%d')}", start_time__range=(today_start, today_end)
-        ).first()
-
-    # Get attendance records for today's session
-    attendance_records = (
-        SessionAttendance.objects.filter(session=session, status="present").select_related("student") if session else []
-    )
-
-    present_students = [record.student for record in attendance_records]
-
-    context = {
-        "classroom": classroom,
-        "is_teacher": is_teacher,
-        "is_enrolled": is_enrolled,
-        "enrolled_students": enrolled_students,
-        "present_students": present_students,
-        "teacher": classroom.teacher,
-    }
-
-    return render(request, "virtual_classroom/attendance.html", context)
-
-
-@login_required
-def update_student_attendance(request, classroom_id):
-    """View to update student attendance."""
-    classroom = get_object_or_404(VirtualClassroom, id=classroom_id)
-
-    # Check if user is teacher or enrolled student
-    is_teacher = request.user == classroom.teacher
-    is_enrolled = False
-    if classroom.course:
-        is_enrolled = classroom.course.enrollments.filter(student=request.user, status="approved").exists()
-    else:
-        is_enrolled = VirtualClassroomParticipant.objects.filter(
-            classroom=classroom,
-            user=request.user,
-        ).exists()
-
-    if not (is_teacher or is_enrolled):
-        messages.error(request, "You do not have access to this virtual classroom.")
-        return redirect("virtual_classroom_list")
-
-    if request.method == "POST":
-        try:
-            # Attempt to parse JSON payload; if it fails assume regular form submission
-            try:
-                data = json.loads(request.body.decode("utf-8") or "{}")
-            except json.JSONDecodeError:
-                data = {}
-
-            student_id = data.get("student_id") or request.POST.get("student_id")
-            status = data.get("status") or request.POST.get("status") or "present"
-
-            # If student_id is still missing, default to the current user (self-marking)
-            if not student_id:
-                student_id = request.user.id
-
-            if not status:
-                status = "present"
-
-            # Validate status value
-            allowed_status = {"present", "absent", "late", "excused"}
-            if status not in allowed_status:
-                return JsonResponse({"status": "error", "message": "Invalid status value"}, status=400)
-
-            student = get_object_or_404(User, id=student_id)
-
-            # Check if student is enrolled in the classroom
-            if classroom.course:
-                if not classroom.course.enrollments.filter(student=student, status="approved").exists():
-                    return JsonResponse(
-                        {"status": "error", "message": "Student is not enrolled in this classroom"},
-                        status=400,
-                    )
-            else:
-                if not VirtualClassroomParticipant.objects.filter(classroom=classroom, user=student).exists():
-                    return JsonResponse(
-                        {"status": "error", "message": "Student is not enrolled in this classroom"},
-                        status=400,
-                    )
-
-            # Get today's session
-            today = timezone.now().date()
-            today_start = timezone.make_aware(datetime.combine(today, datetime.min.time()))
-            today_end = timezone.make_aware(datetime.combine(today, datetime.max.time()))
-
-            if classroom.course:
-                session = Session.objects.filter(
-                    course=classroom.course, start_time__range=(today_start, today_end)
-                ).first()
-            else:
-                session = Session.objects.filter(
-                    title=f"Class on {today.strftime('%Y-%m-%d')}", start_time__range=(today_start, today_end)
-                ).first()
-
-            if not session:
-                # Automatically create today's session if it doesn't exist
-                if classroom.course:
-                    session = Session.objects.create(
-                        course=classroom.course,
-                        title=f"Class on {today.strftime('%Y-%m-%d')}",
-                        start_time=today_start,
-                        end_time=today_end,
-                    )
-                else:
-                    session = Session.objects.create(
-                        title=f"Class on {today.strftime('%Y-%m-%d')}",
-                        start_time=today_start,
-                        end_time=today_end,
-                        course=None,
-                    )
-
-            # Update or create attendance record
-            attendance, created = SessionAttendance.objects.get_or_create(
-                session=session, student=student, defaults={"status": status}
-            )
-
-            if not created:
-                attendance.status = status
-                attendance.save()
-
-            is_ajax = request.headers.get("X-Requested-With") == "XMLHttpRequest"
-            if is_ajax:
-                return JsonResponse({"status": "success"})
-
-            messages.success(request, "Attendance marked successfully.")
-            return redirect("classroom_attendance", classroom_id=classroom_id)
-        except json.JSONDecodeError:
-            return JsonResponse({"status": "error", "message": "Invalid JSON data"}, status=400)
-        except Exception:
-            # Log the detailed exception for debugging
-            logger.exception("Error in update_student_attendance")
-            return JsonResponse({"status": "error", "message": "An internal error occurred"}, status=500)
-
-    return JsonResponse({"status": "error", "message": "Invalid request method"}, status=400)
-
-
-@login_required
-def get_student_attendance(request):
-    """Get a student's attendance data for a specific course."""
-    if not request.headers.get("X-Requested-With") == "XMLHttpRequest":
-        return JsonResponse({"success": False, "message": "Invalid request"}, status=400)
-
-    student_id = request.GET.get("student_id")
-    course_id = request.GET.get("course_id")
-
-    if not all([student_id, course_id]):
-        return JsonResponse({"success": False, "message": "Missing required parameters"}, status=400)
-
-    try:
-        course = Course.objects.get(id=course_id)
-        student = User.objects.get(id=student_id)
-
-        # Check if user is authorized (must be the course teacher)
-        if request.user != course.teacher:
-            return JsonResponse(
-                {"success": False, "message": "Unauthorized: Only the course teacher can view this data"}, status=403
-            )
-
-        # Get all attendance records for this student in this course
-        attendance_records = SessionAttendance.objects.filter(student=student, session__course=course).select_related(
-            "session"
-        )
-
-        # Format the data for the frontend
-        attendance_data = {}
-        for record in attendance_records:
-            attendance_data[record.session.id] = {
-                "status": record.status,
-                "notes": record.notes,
-                "created_at": record.created_at.isoformat(),
-                "updated_at": record.updated_at.isoformat(),
-            }
-
-        return JsonResponse({"success": True, "attendance": attendance_data})
-
-    except Course.DoesNotExist:
-        return JsonResponse({"success": False, "message": "Course not found"}, status=404)
-    except User.DoesNotExist:
-        return JsonResponse({"success": False, "message": "Student not found"}, status=404)
-    except Exception:
-        return JsonResponse({"success": False, "message": "Error: get_student_attendance"}, status=500)
-
-
-@login_required
-@teacher_required
-def add_student_to_course(request, slug):
-    course = get_object_or_404(Course, slug=slug)
-    if course.teacher != request.user:
-        return HttpResponseForbidden("You are not authorized to enroll students in this course.")
-
-    # Check if course is full
-    if course.max_students and course.enrollments.count() >= course.max_students:
-        messages.error(request, "This course is full. Cannot enroll more students.")
-        return redirect("course_detail", slug=course.slug)
-
-    if request.method == "POST":
-        form = StudentEnrollmentForm(request.POST)
-        if form.is_valid():
-            email = form.cleaned_data["email"]
-            first_name = form.cleaned_data["first_name"]
-            last_name = form.cleaned_data["last_name"]
-
-            # Try to find existing user
-            student = User.objects.filter(email=email).first()
-
-            if student:
-                # Check if student is already enrolled
-                if Enrollment.objects.filter(course=course, student=student).exists():
-                    form.add_error(None, "This student is already enrolled in the course.")
-                else:
-                    # Enroll existing student
-                    enrollment = Enrollment.objects.create(course=course, student=student, status="approved")
-                    messages.success(request, f"{student.get_full_name()} has been enrolled in the course.")
-
-                    # Send enrollment notifications
-                    send_enrollment_confirmation(enrollment)
-                    notify_teacher_new_enrollment(enrollment)
-
-                    # Send enrollment notification email to existing student
-                    context = {"student": student, "course": course, "teacher": request.user, "is_existing_user": True}
-                    html_message = render_to_string("emails/student_enrollment.html", context)
-                    send_mail(
-                        f"You have been enrolled in {course.title}",
-                        f"You have been enrolled in {course.title} "
-                        f"by {request.user.get_full_name() or request.user.username}.",
-                        settings.DEFAULT_FROM_EMAIL,
-                        [email],
-                        html_message=html_message,
-                        fail_silently=False,
-                    )
-                    return redirect("course_detail", slug=course.slug)
-            else:
-                # Create new student account
-                try:
-                    # Generate a unique username
-                    timestamp = timezone.now().strftime("%Y%m%d%H%M%S")
-                    generated_username = f"user_{timestamp}"
-                    while User.objects.filter(username=generated_username).exists():
-                        generated_username = f"user_{timestamp}_{get_random_string(6)}"
-
-                    # Create new user
-                    random_password = get_random_string(10)
-                    student = User.objects.create_user(
-                        username=generated_username,
-                        email=email,
-                        password=random_password,
-                        first_name=first_name,
-                        last_name=last_name,
-                    )
-                    student.profile.is_teacher = False
-                    student.profile.save()
-
-                    # Enroll the new student
-                    enrollment = Enrollment.objects.create(course=course, student=student, status="approved")
-                    messages.success(request, f"{first_name} {last_name} has been enrolled in the course.")
-
-                    # Send enrollment notifications
-                    send_enrollment_confirmation(enrollment)
-                    notify_teacher_new_enrollment(enrollment)
-
-                    # Send enrollment notification and password reset link to new student
-                    reset_link = request.build_absolute_uri(reverse("account_reset_password"))
-                    context = {
-                        "student": student,
-                        "course": course,
-                        "teacher": request.user,
-                        "reset_link": reset_link,
-                        "is_existing_user": False,
-                    }
-                    html_message = render_to_string("emails/student_enrollment.html", context)
-                    send_mail(
-                        f"You have been enrolled in {course.title}",
-                        f"You have been enrolled in {course.title} "
-                        f"by {request.user.get_full_name() or request.user.username}. "
-                        f"Please visit {reset_link} to set your password.",
-                        settings.DEFAULT_FROM_EMAIL,
-                        [email],
-                        html_message=html_message,
-                        fail_silently=False,
-                    )
-                    return redirect("course_detail", slug=course.slug)
-                except IntegrityError:
-                    form.add_error(None, "Failed to create user account. Please try again.")
-    else:
-        form = StudentEnrollmentForm()
-
-    return render(request, "courses/add_student.html", {"form": form, "course": course})
-
-
-def donate(request):
-    """Display the donation page with options for one-time donations and subscriptions."""
-    # Get recent public donations to display
-    recent_donations = Donation.objects.filter(status="completed", anonymous=False).order_by("-created_at")[:5]
-
-    # Calculate total donations
-    total_donations = Donation.objects.filter(status="completed").aggregate(total=Sum("amount"))["total"] or 0
-
-    # Preset donation amounts for buttons
-    donation_amounts = [5, 10, 25, 50, 100]
-
-    context = {
-        "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY,
-        "recent_donations": recent_donations,
-        "total_donations": total_donations,
-        "donation_amounts": donation_amounts,
-    }
-
-    return render(request, "donate.html", context)
-
-
-@csrf_exempt  # Add CSRF exemption for Stripe
-def create_donation_payment_intent(request: HttpRequest) -> JsonResponse:
-    """Create a payment intent for a one-time donation with multiple payment methods."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Invalid request method"}, status=400)
-
-    try:
-        data = json.loads(request.body)
-        amount = data.get("amount")
-        message = data.get("message", "")
-        anonymous = data.get("anonymous", False)
-        email = data.get("email", "")
-
-        if not amount or float(amount) <= 0:
-            return JsonResponse({"error": "Invalid donation amount"}, status=400)
-
-        if not email:
-            return JsonResponse({"error": "Email is required"}, status=400)
-
-        # Convert amount to cents for Stripe
-        amount_cents = int(float(amount) * 100)
-
-        # Create a payment intent with multiple payment method types
-        intent = stripe.PaymentIntent.create(
-            amount=amount_cents,
-            currency="usd",
-            automatic_payment_methods={"enabled": True, "allow_redirects": "always"},
-            receipt_email=email,
-            metadata={
-                "donation_type": "one_time",
-                "user_id": str(request.user.id) if request.user.is_authenticated else None,
-                "message": message[:100] if message else "",
-                "anonymous": "true" if anonymous else "false",
-                "email": email,
-            },
-        )
-
-        # Create a donation record
-        donation = Donation.objects.create(
-            user=request.user if request.user.is_authenticated else None,
-            email=email,
-            amount=amount,
-            donation_type="one_time",
-            status="pending",
-            stripe_payment_intent_id=intent.id,
-            message=message,
-            anonymous=anonymous,
-        )
-
-        return JsonResponse({"clientSecret": intent.client_secret, "donation_id": donation.id})
-
-    except Exception as e:
-        # Log the detailed exception for debugging
-        logger.exception("Error in create_donation_payment_intent: %s", str(e))
-        return JsonResponse({"error": "An internal error occurred"}, status=400)
-
-
-@csrf_exempt
-def create_donation_subscription(request: HttpRequest) -> JsonResponse:
-    """Create a subscription for recurring donations with multiple payment methods."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Invalid request method"}, status=400)
-
-    try:
-        data = json.loads(request.body)
-        amount = data.get("amount")
-        message = data.get("message", "")
-        anonymous = data.get("anonymous", False)
-        email = data.get("email", "")
-
-        if not amount or float(amount) <= 0:
-            return JsonResponse({"error": "Invalid donation amount"}, status=400)
-
-        if not email:
-            return JsonResponse({"error": "Email is required"}, status=400)
-
-        # Convert amount to cents for Stripe
-        amount_cents = int(float(amount) * 100)
-
-        # Create or get customer
-        customer = None
-        # Try to retrieve existing customer for authenticated users
-        if request.user.is_authenticated:
-            try:
-                membership = request.user.membership
-                if membership.stripe_customer_id:
-                    customer = stripe.Customer.retrieve(membership.stripe_customer_id)
-            except (UserMembership.DoesNotExist, stripe.error.InvalidRequestError):
-                # No membership or invalid customer ID
-                customer = None
-
-        # Create new customer if needed
-        if not customer:
-            customer = stripe.Customer.create(
-                email=email,
-                metadata={
-                    "user_id": str(request.user.id) if request.user.is_authenticated else None,
-                },
-            )
-            if request.user.is_authenticated:
-                # Store customer ID in user membership
-                membership, _ = UserMembership.objects.get_or_create(
-                    user=request.user, defaults={"plan_id": 1, "stripe_customer_id": customer.id}
-                )
-                if not membership.stripe_customer_id:
-                    membership.stripe_customer_id = customer.id
-                    membership.save()
-
-        # Create a PaymentIntent for the first payment with setup_future_usage
-        payment_intent = stripe.PaymentIntent.create(
-            amount=amount_cents,
-            currency="usd",
-            customer=customer.id,
-            setup_future_usage="off_session",
-            automatic_payment_methods={"enabled": True, "allow_redirects": "always"},
-            metadata={
-                "donation_type": "subscription",
-                "user_id": str(request.user.id) if request.user.is_authenticated else None,
-                "message": message[:100] if message else "",
-                "anonymous": "true" if anonymous else "false",
-                "email": email,
-            },
-        )
-
-        # Create donation record
-        donation = Donation.objects.create(
-            user=request.user if request.user.is_authenticated else None,
-            email=email,
-            amount=amount,
-            donation_type="subscription",
-            status="pending",
-            stripe_payment_intent_id=payment_intent.id,
-            stripe_customer_id=customer.id,
-            message=message,
-            anonymous=anonymous,
-        )
-
-        return JsonResponse({"clientSecret": payment_intent.client_secret, "donation_id": donation.id})
-
-    except Exception as e:
-        return JsonResponse({"error": str(e)}, status=400)
-
-
-@csrf_exempt
-def donation_webhook(request):
-    """Handle Stripe webhooks for donations."""
-    payload = request.body
-    sig_header = request.META.get("HTTP_STRIPE_SIGNATURE")
-    webhook_secret = settings.STRIPE_WEBHOOK_SECRET
-
-    try:
-        event = stripe.Webhook.construct_event(payload, sig_header, webhook_secret)
-        logger.info("Received Stripe webhook: %s", event.type)
-    except ValueError as e:
-        logger.exception("Invalid payload: %s", str(e))
-        return HttpResponse(status=400)
-    except stripe.error.SignatureVerificationError as e:
-        logger.exception("Invalid signature: %s", str(e))
-        return HttpResponse(status=400)
-
-    try:
-        # Handle payment intent events
-        if event.type == "payment_intent.succeeded":
-            payment_intent = event.data.object
-            logger.info("Processing successful payment: %s", payment_intent.id)
-            handle_successful_donation_payment(payment_intent)
-        elif event.type == "payment_intent.payment_failed":
-            payment_intent = event.data.object
-            logger.info("Processing failed payment: %s", payment_intent.id)
-            handle_failed_donation_payment(payment_intent)
-
-        # Handle subscription events
-        elif event.type == "customer.subscription.created":
-            subscription = event.data.object
-            logger.info("Processing new subscription: %s", subscription.id)
-            handle_subscription_created(subscription)
-        elif event.type == "customer.subscription.updated":
-            subscription = event.data.object
-            logger.info("Processing subscription update: %s", subscription.id)
-            handle_subscription_updated(subscription)
-        elif event.type == "customer.subscription.deleted":
-            subscription = event.data.object
-            logger.info("Processing subscription cancellation: %s", subscription.id)
-            handle_subscription_cancelled(subscription)
-        elif event.type == "invoice.payment_succeeded":
-            invoice = event.data.object
-            logger.info("Processing successful invoice payment: %s", invoice.id)
-            handle_invoice_paid(invoice)
-        elif event.type == "invoice.payment_failed":
-            invoice = event.data.object
-            logger.info("Processing failed invoice payment: %s", invoice.id)
-            handle_invoice_failed(invoice)
-
-        return HttpResponse(status=200)
-    except Exception:
-        logger.exception("Error processing webhook %s", event.type)
-        return HttpResponse(status=500)
-
-
-def handle_successful_donation_payment(payment_intent: stripe.PaymentIntent) -> None:
-    """Handle successful one-time donation payments."""
-    try:
-        logger.info("Finding donation for payment intent: %s", payment_intent.id)
-        # Find the donation by payment intent ID
-        donation = Donation.objects.get(stripe_payment_intent_id=payment_intent.id)
-
-        # Only update if not already completed
-        if donation.status != "completed":
-            logger.info("Marking donation %s as completed", donation.id)
-            donation.status = "completed"
-            donation.save()
-
-            # Send thank you email
-            send_donation_thank_you_email(donation)
-        else:
-            logger.info("Donation %s already completed", donation.id)
-
-    except Donation.DoesNotExist:
-        logger.warning(
-            (
-                "No donation found for payment intent: %s. This may indicate a payment intended for another system "
-                "or a database inconsistency."
-            ),
-            payment_intent.id,
-        )
-    except Exception:
-        logger.exception("Error handling successful payment %s", payment_intent.id)
-        raise  # Re-raise to allow webhook to handle the error
-
-
-def handle_failed_donation_payment(payment_intent):
-    """Handle failed one-time donation payments."""
-    try:
-        # Find the donation by payment intent ID
-        donation = Donation.objects.get(stripe_payment_intent_id=payment_intent.id)
-        donation.status = "failed"
-        donation.save()
-
-    except Donation.DoesNotExist:
-        # This might be a payment for something else
-        pass
-
-
-def handle_subscription_created(subscription):
-    """Handle newly created subscriptions."""
-    try:
-        # Find the donation by subscription ID
-        donation = Donation.objects.get(stripe_subscription_id=subscription.id)
-        donation.status = "completed" if subscription.status == "active" else "pending"
-        donation.save()
-
-    except Donation.DoesNotExist:
-        # This might be a subscription for something else
-        pass
-
-
-def handle_subscription_updated(subscription):
-    """Handle subscription updates."""
-    try:
-        # Find the donation by subscription ID
-        donation = Donation.objects.get(stripe_subscription_id=subscription.id)
-
-        # Update status based on subscription status
-        if subscription.status == "active":
-            donation.status = "completed"
-        elif subscription.status == "past_due":
-            donation.status = "pending"
-        elif subscription.status == "canceled":
-            donation.status = "cancelled"
-
-        donation.save()
-
-    except Donation.DoesNotExist:
-        # This might be a subscription for something else
-        pass
-
-
-def handle_subscription_cancelled(subscription):
-    """Handle cancelled subscriptions."""
-    try:
-        # Find the donation by subscription ID
-        donation = Donation.objects.get(stripe_subscription_id=subscription.id)
-        donation.status = "cancelled"
-        donation.save()
-
-    except Donation.DoesNotExist:
-        # This might be a subscription for something else
-        pass
-
-
-def handle_invoice_paid(invoice):
-    """Handle successful subscription invoice payments."""
-    if invoice.subscription:
-        try:
-            # Find the donation by subscription ID
-            donation = Donation.objects.get(stripe_subscription_id=invoice.subscription)
-
-            # Create a new donation record for this payment
-            Donation.objects.create(
-                user=donation.user,
-                email=donation.email,
-                amount=donation.amount,
-                donation_type="subscription",
-                status="completed",
-                stripe_subscription_id=donation.stripe_subscription_id,
-                stripe_customer_id=donation.stripe_customer_id,
-                message=donation.message,
-                anonymous=donation.anonymous,
-            )
-
-            # Send thank you email
-            send_donation_thank_you_email(donation)
-
-        except Donation.DoesNotExist:
-            # This might be a subscription for something else
-            pass
-
-
-def handle_invoice_failed(invoice):
-    """Handle failed subscription invoice payments."""
-    if invoice.subscription:
-        try:
-            # Find the donation by subscription ID
-            donation = Donation.objects.get(stripe_subscription_id=invoice.subscription)
-
-            # Create a new donation record for this failed payment
-            Donation.objects.create(
-                user=donation.user,
-                email=donation.email,
-                amount=donation.amount,
-                donation_type="subscription",
-                status="failed",
-                stripe_subscription_id=donation.stripe_subscription_id,
-                stripe_customer_id=donation.stripe_customer_id,
-                message=donation.message,
-                anonymous=donation.anonymous,
-            )
-
-        except Donation.DoesNotExist:
-            # This might be a subscription for something else
-            pass
-
-
-def send_donation_thank_you_email(donation):
-    """Send a thank you email for donations."""
-    subject = "Thank You for Your Donation!"
-    from_email = settings.DEFAULT_FROM_EMAIL
-    to_email = donation.email
-
-    # Prepare context for email template
-    context = {
-        "donation": donation,
-        "site_name": settings.SITE_NAME,
-    }
-
-    # Render email template
-    html_message = render_to_string("emails/donation_thank_you.html", context)
-    plain_message = strip_tags(html_message)
-
-    # Send email
-    send_mail(subject, plain_message, from_email, [to_email], html_message=html_message)
-
-
-def donation_success(request):
-    """Display a success page after a successful donation."""
-    donation_id = request.GET.get("donation_id")
-    payment_intent = request.GET.get("payment_intent")
-    redirect_status = request.GET.get("redirect_status")
-
-    # Ensure we have the required donation_id
-    if not donation_id:
-        messages.error(request, "No donation information found.")
-        return redirect("donate")
-
-    try:
-        donation = Donation.objects.get(id=donation_id)
-
-        # If the redirect indicates success and a payment intent exists, verify with Stripe.
-        if redirect_status == "succeeded" and payment_intent:
-            # Double check with Stripe that the payment was successful
-            try:
-                # Retrieve PaymentIntent from Stripe to confirm payment status.
-                stripe_payment = stripe.PaymentIntent.retrieve(payment_intent)
-                if stripe_payment.status == "succeeded":
-                    donation.status = "completed"
-                    donation.save()
-                    # Send thank you email if not already sent
-                    send_donation_thank_you_email(donation)
-            except stripe.error.StripeError:
-                logger.exception("Error verifying payment intent")
-
-                # Retry logic for temporary Stripe failures using Django's cache.
-                cache_key = f"retry_verify_payment_{payment_intent}"
-                retry_count = cache.get(cache_key, 0)
-
-                if retry_count < 3:
-                    cache.set(cache_key, retry_count + 1, 3600)  # Retry after 1 hour
-                    # You could enqueue a Celery task or use another background task system
-                    # to retry the verification process
-                    logger.warning("Retry %d/3 scheduled for payment verification: %s", retry_count + 1, payment_intent)
-                else:
-                    logger.error("Max retries reached for payment verification: %s", payment_intent)
-
-                # Continue to show the success page even if verification fails;
-                # the webhook will eventually update the status
-
-        # If the donation status is now completed, show the success page.
-        if donation.status == "completed":
-            context = {
-                "donation": donation,
-            }
-            return render(request, "donation_success.html", context)
-
-        # If donation status is not completed, alert the user and redirect.
-        messages.error(request, "Donation has not been successfully processed.")
-        return redirect("donate")
-
-    except Donation.DoesNotExist:
-        messages.error(request, "Invalid donation ID.")
-        return redirect("donate")
-
-    except stripe.error.StripeError:
-        logger.exception("Stripe error in donation_success view")
-        messages.error(request, "A payment processing error occurred. Please check your payment details.")
-        return redirect("donate")
-
-    except Exception:
-        logger.exception("Unexpected error in donation_success view")
-        messages.error(request, "An unexpected error occurred while processing your donation.")
-        return redirect("donate")
-
-
-def donation_cancel(request):
-    """Handle donation cancellation."""
-    return redirect("donate")
-
-
-def educational_videos_list(request: HttpRequest) -> HttpResponse:
-    """View for listing educational videos with requests included at the bottom."""
-    # Get category filter from query params
-    selected_category = request.GET.get("category")
-
-    # Base querysets
-    videos = EducationalVideo.objects.select_related("uploader", "category").order_by("-uploaded_at")
-    video_requests = VideoRequest.objects.select_related("requester", "category", "fulfilled_by").order_by(
-        "-created_at"
-    )
-
-    # Apply category filter if provided
-    if selected_category:
-        videos = videos.filter(category__slug=selected_category)
-        video_requests = video_requests.filter(category__slug=selected_category)
-        selected_category_obj = get_object_or_404(Subject, slug=selected_category)
-        selected_category_display = selected_category_obj.name
-    else:
-        selected_category_display = None
-
-    # Paginate videos (9 per page)
-    paginator = Paginator(videos, 9)
-    page_number = request.GET.get("page")
-    page_obj = paginator.get_page(page_number)
-
-    # Limit video requests to 5
-    video_requests = video_requests[:5]
-    video_requests_paginated = VideoRequest.objects.count() > 5
-
-    # Category counts for sidebar
-    category_counts = dict(
-        EducationalVideo.objects.values("category__slug")
-        .annotate(count=Count("id"))
-        .values_list("category__slug", "count"),
-    )
-
-    # Get all subjects
-    subjects = Subject.objects.all().order_by("order", "name")
-
-    context = {
-        "videos": page_obj,
-        "is_paginated": page_obj.has_other_pages(),
-        "page_obj": page_obj,
-        "subjects": subjects,
-        "selected_category": selected_category,
-        "selected_category_display": selected_category_display,
-        "category_counts": category_counts,
-        "video_requests": video_requests,
-        "video_requests_paginated": video_requests_paginated,
-    }
-
-    return render(request, "videos/list.html", context)
-
-
-def fetch_video_oembed(video_url):
-    """
-    Hits YouTube or Vimeo's oEmbed endpoint and returns a dict
-    containing 'title' and 'description' (if available).
-    """
-    # YouTube IDs are always 11 chars
-    yt_match = re.search(r"(?:v=|youtu\.be/|embed/|shorts/)([\w-]{11})", video_url)
-    if yt_match:
-        video_id = yt_match.group(1)
-        endpoint = f"https://www.youtube.com/oembed?url=https://www.youtube.com/watch?v={video_id}&format=json"
-    else:
-        # Vimeo URLs look like vimeo.com/12345678…
-        vm_match = re.search(r"vimeo\.com/(?:video/)?(\d+)", video_url)
-        if vm_match:
-            endpoint = f"https://vimeo.com/api/oembed.json?url={video_url}"
-        else:
-            return {}
-
-    try:
-        resp = requests.get(endpoint, timeout=3)
-        if resp.ok:
-            data = resp.json()
-            return {
-                "title": data.get("title", "").strip(),
-                "description": data.get("description", "").strip(),
-            }
-    except requests.RequestException:
-        pass
-
-    return {}
-
-
-def upload_educational_video(request):
-    """
-    Handles GET → render form, POST → save video.
-    If user leaves title/description blank, we back‑fill from YouTube/Vimeo.
-    """
-    if request.method == "POST":
-        form = EducationalVideoForm(request.POST)
-        if form.is_valid():
-            video = form.save(commit=False)
-            if request.user.is_authenticated:
-                video.uploader = request.user
-
-            # auto‑fetch metadata if missing
-            if not video.title.strip() or not video.description.strip():
-                info = fetch_video_oembed(video.video_url)
-                if not video.title.strip() and info.get("title"):
-                    video.title = info["title"]
-                if not video.description.strip() and info.get("description"):
-                    video.description = info["description"]
-
-            video.save()
-
-            if request.headers.get("X-Requested-With") == "XMLHttpRequest":
-                return JsonResponse({"success": True, "message": "Video added successfully!"})
-            return redirect("educational_videos_list")
-
-        if request.headers.get("X-Requested-With") == "XMLHttpRequest":
-            error_text = " ".join(f"{fld}: {', '.join(errs)}." for fld, errs in form.errors.items())
-            return JsonResponse({"success": False, "error": error_text}, status=400)
-
-    else:
-        form = EducationalVideoForm()
-
-    return render(request, "videos/upload.html", {"form": form})
-
-
-def certificate_detail(request, certificate_id):
-    certificate = get_object_or_404(Certificate, certificate_id=certificate_id)
-    if request.user != certificate.user and not request.user.is_staff:
-        return HttpResponseForbidden("You don't have permission to view this certificate")
-    context = {
-        "certificate": certificate,
-    }
-    return render(request, "courses/certificate_detail.html", context)
-
-
-@login_required
-def generate_certificate(request, enrollment_id):
-    # Retrieve the enrollment for the current user
-    enrollment = get_object_or_404(Enrollment, id=enrollment_id, student=request.user)
-    # Ensure the course is completed before generating a certificate
-    if enrollment.status != "completed":
-        messages.error(request, "You can only generate a certificate for a completed course.")
-        return redirect("student_dashboard")
-
-    # Check if a certificate already exists for this course and user
-    certificate = Certificate.objects.filter(user=request.user, course=enrollment.course).first()
-    if certificate:
-        messages.info(request, "Certificate already generated.")
-        return redirect("certificate_detail", certificate_id=certificate.certificate_id)
-
-    # Create a new certificate record manually
-    certificate = Certificate.objects.create(user=request.user, course=enrollment.course)
-    messages.success(request, "Certificate generated successfully!")
-    return redirect("certificate_detail", certificate_id=certificate.certificate_id)
-
-
-@login_required
-def tracker_list(request):
-    trackers = ProgressTracker.objects.filter(user=request.user).order_by("-updated_at")
-    return render(request, "trackers/list.html", {"trackers": trackers})
-
-
-@login_required
-def create_tracker(request):
-    if request.method == "POST":
-        form = ProgressTrackerForm(request.POST)
-        if form.is_valid():
-            tracker = form.save(commit=False)
-            tracker.user = request.user
-            tracker.save()
-            return redirect("tracker_detail", tracker_id=tracker.id)
-    else:
-        form = ProgressTrackerForm()
-    return render(request, "trackers/form.html", {"form": form, "title": "Create Progress Tracker"})
-
-
-@login_required
-def update_tracker(request, tracker_id):
-    tracker = get_object_or_404(ProgressTracker, id=tracker_id, user=request.user)
-
-    if request.method == "POST":
-        form = ProgressTrackerForm(request.POST, instance=tracker)
-        if form.is_valid():
-            form.save()
-            return redirect("tracker_detail", tracker_id=tracker.id)
-    else:
-        form = ProgressTrackerForm(instance=tracker)
-    return render(request, "trackers/form.html", {"form": form, "tracker": tracker, "title": "Update Progress Tracker"})
-
-
-@login_required
-def tracker_detail(request, tracker_id):
-    tracker = get_object_or_404(ProgressTracker, id=tracker_id, user=request.user)
-    embed_url = request.build_absolute_uri(f"/trackers/embed/{tracker.embed_code}/")
-    return render(request, "trackers/detail.html", {"tracker": tracker, "embed_url": embed_url})
-
-
-@login_required
-def update_progress(request, tracker_id):
-    if request.method == "POST" and request.headers.get("X-Requested-With") == "XMLHttpRequest":
-        tracker = get_object_or_404(ProgressTracker, id=tracker_id, user=request.user)
-
-        try:
-            new_value = int(request.POST.get("current_value", tracker.current_value))
-            tracker.current_value = new_value
-            tracker.save()
-
-            return JsonResponse(
-                {"success": True, "percentage": tracker.percentage, "current_value": tracker.current_value}
-            )
-        except ValueError:
-            return JsonResponse({"success": False, "error": "Invalid value"}, status=400)
-    return JsonResponse({"success": False, "error": "Invalid request"}, status=400)
-
-
-@xframe_options_exempt
-def embed_tracker(request, embed_code):
-    tracker = get_object_or_404(ProgressTracker, embed_code=embed_code, public=True)
-    return render(request, "trackers/embed.html", {"tracker": tracker})
-
-
-@login_required
-def streak_detail(request):
-    """Display the user's learning streak."""
-    if not request.user.is_authenticated:
-        return redirect("account_login")
-    streak, created = LearningStreak.objects.get_or_create(user=request.user)
-    return render(request, "streak_detail.html", {"streak": streak})
-
-
-@login_required
-def waiting_room_list(request):
-    """View for displaying waiting rooms categorized by status."""
-    # Get waiting rooms by status
-    open_rooms = WaitingRoom.objects.filter(status="open")
-    fulfilled_rooms = WaitingRoom.objects.filter(status="fulfilled")
-    closed_rooms = WaitingRoom.objects.filter(status="closed")
-
-    # Get waiting rooms created by the user
-    user_created_rooms = WaitingRoom.objects.filter(creator=request.user)
-
-    # Get waiting rooms joined by the user
-    user_joined_rooms = request.user.joined_waiting_rooms.all()
-
-    # Process topics for all waiting rooms
-    all_rooms = (
-        list(open_rooms)
-        + list(fulfilled_rooms)
-        + list(closed_rooms)
-        + list(user_created_rooms)
-        + list(user_joined_rooms)
-    )
-    room_topics = {}
-    for room in all_rooms:
-        room_topics[room.id] = [topic.strip() for topic in room.topics.split(",") if topic.strip()]
-
-    context = {
-        "open_rooms": open_rooms,
-        "fulfilled_rooms": fulfilled_rooms,
-        "closed_rooms": closed_rooms,
-        "user_created_rooms": user_created_rooms,
-        "user_joined_rooms": user_joined_rooms,
-        "room_topics": room_topics,
-    }
-    return render(request, "waiting_room/list.html", context)
-
-
-def find_matching_courses(waiting_room):
-    """Find courses that match the waiting room's subject and topics."""
-    # Get courses with matching subject name (case-insensitive)
-    matching_courses = Course.objects.filter(subject__iexact=waiting_room.subject, status="published")
-
-    # Filter courses that have all required topics
-    required_topics = {t.strip().lower() for t in waiting_room.topics.split(",") if t.strip()}
-
-    # Further filter courses by checking if their topics contain all required topics
-    final_matches = []
-    for course in matching_courses:
-        course_topics = {t.strip().lower() for t in course.topics.split(",") if t.strip()}
-        if course_topics.issuperset(required_topics):
-            final_matches.append(course)
-
-    return final_matches
-
-
-def waiting_room_detail(request, waiting_room_id):
-    """View for displaying details of a waiting room."""
-    waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id)
-
-    # Check if the user is a participant
-    is_participant = request.user.is_authenticated and request.user in waiting_room.participants.all()
-
-    # Check if the user is the creator
-    is_creator = request.user.is_authenticated and request.user == waiting_room.creator
-
-    # Check if the user is a teacher
-    is_teacher = request.user.is_authenticated and hasattr(request.user, "profile") and request.user.profile.is_teacher
-
-    context = {
-        "waiting_room": waiting_room,
-        "is_participant": is_participant,
-        "is_creator": is_creator,
-        "is_teacher": is_teacher,
-        "participant_count": waiting_room.participants.count() + 1,  # Add 1 to include the creator
-        "topic_list": [topic.strip() for topic in waiting_room.topics.split(",") if topic.strip()],
-    }
-    return render(request, "waiting_room/detail.html", context)
-
-
-@login_required
-def join_waiting_room(request, waiting_room_id):
-    """View for joining a waiting room."""
-    waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id)
-
-    # Check if the waiting room is open
-    if waiting_room.status != "open":
-        messages.error(request, "This waiting room is no longer open for joining.")
-        return redirect("waiting_room_list")
-
-    # Add the user as a participant if not already
-    if request.user not in waiting_room.participants.all():
-        waiting_room.participants.add(request.user)
-        messages.success(request, f"You have joined the waiting room: {waiting_room.title}")
-    else:
-        messages.info(request, "You are already a participant in this waiting room.")
-
-    return redirect("waiting_room_detail", waiting_room_id=waiting_room.id)
-
-
-@login_required
-def leave_waiting_room(request, waiting_room_id):
-    """View for leaving a waiting room."""
-    waiting_room = get_object_or_404(WaitingRoom, id=waiting_room_id)
-
-    # Remove the user from participants
-    if request.user in waiting_room.participants.all():
-        waiting_room.participants.remove(request.user)
-        messages.success(request, f"You have left the waiting room: {waiting_room.title}")
-    else:
-        messages.info(request, "You are not a participant in this waiting room.")
-
-    return redirect("waiting_room_list")
-
-
-def is_superuser(user):
-    return user.is_superuser
-
-
-@user_passes_test(is_superuser)
-def sync_github_milestones(request):
-    """Sync GitHub milestones with forum topics."""
-    github_repo = "alphaonelabs/alphaonelabs-education-website"
-    milestones_url = f"https://api.github.com/repos/{github_repo}/milestones"
-
-    try:
-        # Get GitHub milestones
-        response = requests.get(milestones_url)
-        response.raise_for_status()
-        milestones = response.json()
-
-        # Get or create a forum category for milestones
-        category, created = ForumCategory.objects.get_or_create(
-            name="GitHub Milestones",
-            defaults={
-                "slug": "github-milestones",
-                "description": "Discussions about GitHub milestones and project roadmap",
-                "icon": "fa-github",
-            },
-        )
-
-        # Count for tracking
-        created_count = 0
-        updated_count = 0
-
-        for milestone in milestones:
-            milestone_title = milestone["title"]
-            milestone_description = milestone["description"] or "No description provided."
-            milestone_url = milestone["html_url"]
-            milestone_state = milestone["state"]
-            open_issues = milestone["open_issues"]
-            closed_issues = milestone["closed_issues"]
-            due_date = milestone.get("due_on", "No due date")
-
-            # Format content with progress information
-            progress = 0
-            if open_issues + closed_issues > 0:
-                progress = (closed_issues / (open_issues + closed_issues)) * 100
-
-            content = f"""
-## Milestone: {milestone_title}
-
-{milestone_description}
-
-**State:** {milestone_state}
-**Progress:** {progress:.1f}% ({closed_issues} closed / {open_issues} open issues)
-**Due Date:** {due_date}
-
-[View on GitHub]({milestone_url})
-            """
-
-            # Try to find an existing topic for this milestone
-            topic = ForumTopic.objects.filter(
-                category=category, title__startswith=f"Milestone: {milestone_title}"
-            ).first()
-
-            if topic:
-                # Update existing topic
-                topic.content = content
-                topic.is_pinned = milestone_state == "open"  # Pin open milestones
-                topic.save()
-                updated_count += 1
-            else:
-                # Create new topic
-                # Use the first superuser as the author
-                author = User.objects.filter(is_superuser=True).first()
-                if author:
-                    ForumTopic.objects.create(
-                        category=category,
-                        title=f"Milestone: {milestone_title}",
-                        content=content,
-                        author=author,
-                        is_pinned=(milestone_state == "open"),
-                    )
-                    created_count += 1
-
-        if created_count or updated_count:
-            messages.success(
-                request, f"Successfully synced GitHub milestones: {created_count} created, {updated_count} updated."
-            )
-        else:
-            messages.info(request, "No GitHub milestones to sync.")
-
-    except requests.exceptions.RequestException as e:
-        messages.error(request, f"Error fetching GitHub milestones: {str(e)}")
-    except Exception as e:
-        messages.error(request, f"Error syncing milestones: {str(e)}")
-
-    return redirect("forum_categories")
-
-
-@login_required
-def toggle_course_status(request, slug):
-    """Toggle a course between draft and published status"""
-    course = get_object_or_404(Course, slug=slug)
-
-    # Check if user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can modify course status!")
-        return redirect("course_detail", slug=slug)
-
-    # Toggle the status between draft and published
-    if course.status == "draft":
-        course.status = "published"
-        messages.success(request, "Course has been published successfully!")
-    elif course.status == "published":
-        course.status = "draft"
-        messages.success(request, "Course has been unpublished and is now in draft mode.")
-    # Note: We don't toggle from/to 'archived' status as that's a separate action
-
-    course.save()
-    return redirect("course_detail", slug=slug)
-
-
-def public_profile(request, username):
-    user = get_object_or_404(User, username=username)
-
-    try:
-        profile = user.profile
-    except Profile.DoesNotExist:
-        # Instead of raising Http404, we call custom_404.
-        return custom_404(request, "Profile not found.")
-
-    if not profile.is_profile_public:
-        return custom_404(request, "Profile not found.")
-
-    context = {"profile": profile}
-
-    if profile.is_teacher:
-        courses = Course.objects.filter(teacher=user)
-        total_students = sum(course.enrollments.filter(status="approved").count() for course in courses)
-        context.update(
-            {
-                "teacher_stats": {
-                    "courses": courses,
-                    "total_courses": courses.count(),
-                    "total_students": total_students,
-                }
-            }
-        )
-    else:
-        enrollments = Enrollment.objects.filter(student=user)
-        completed_enrollments = enrollments.filter(status="completed")
-        total_courses = enrollments.count()
-        total_completed = completed_enrollments.count()
-        total_progress = 0
-        progress_count = 0
-        for enrollment in enrollments:
-            progress, _ = CourseProgress.objects.get_or_create(enrollment=enrollment)
-            total_progress += progress.completion_percentage
-            progress_count += 1
-        avg_progress = round(total_progress / progress_count) if progress_count > 0 else 0
-        context.update(
-            {
-                "total_courses": total_courses,
-                "total_completed": total_completed,
-                "avg_progress": avg_progress,
-                "completed_courses": completed_enrollments,
-            }
-        )
-
-    return render(request, "public_profile_detail.html", context)
-
-
-class GradeableLinkListView(ListView):
-    """View to display all submitted links that can be graded."""
-
-    model = GradeableLink
-    template_name = "grade_links/link_list.html"
-    context_object_name = "links"
-    paginate_by = 10
-
-
-class GradeableLinkDetailView(DetailView):
-    """View to display details about a specific link and its grades."""
-
-    model = GradeableLink
-    template_name = "grade_links/link_detail.html"
-    context_object_name = "link"
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-
-        # Check if user is authenticated
-        if self.request.user.is_authenticated:
-            # Check if the user has already graded this link
-            try:
-                user_grade = LinkGrade.objects.get(link=self.object, user=self.request.user)
-                context["user_grade"] = user_grade
-                context["grade_form"] = LinkGradeForm(instance=user_grade)
-            except LinkGrade.DoesNotExist:
-                context["grade_form"] = LinkGradeForm()
-
-        # Get all grades for this link
-        context["grades"] = self.object.grades.all()
-
-        return context
-
-
-class GradeableLinkCreateView(LoginRequiredMixin, CreateView):
-    """View to submit a new link for grading."""
-
-    model = GradeableLink
-    form_class = GradeableLinkForm
-    template_name = "grade_links/submit_link.html"
-    success_url = reverse_lazy("gradeable_link_list")
-
-    def form_valid(self, form):
-        form.instance.user = self.request.user
-        messages.success(self.request, "Your link has been submitted for grading!")
-        return super().form_valid(form)
-
-
-@login_required
-def grade_link(request, pk):
-    """View to grade a link."""
-    link = get_object_or_404(GradeableLink, pk=pk)
-
-    # Prevent users from grading their own links
-    if link.user == request.user:
-        messages.error(request, "You cannot grade your own submissions!")
-        return redirect("gradeable_link_detail", pk=link.pk)
-
-    # Check if the user has already graded this link
-    try:
-        user_grade = LinkGrade.objects.get(link=link, user=request.user)
-    except LinkGrade.DoesNotExist:
-        user_grade = None
-
-    if request.method == "POST":
-        form = LinkGradeForm(request.POST, instance=user_grade)
-        if form.is_valid():
-            grade = form.save(commit=False)
-            grade.link = link
-            grade.user = request.user
-            grade.save()
-            messages.success(request, "Your grade has been submitted!")
-            return redirect("gradeable_link_detail", pk=link.pk)
-    else:
-        form = LinkGradeForm(instance=user_grade)
-
-    return render(
-        request,
-        "grade_links/grade_link.html",
-        {
-            "form": form,
-            "link": link,
-        },
-    )
-
-
-def duplicate_session(request, session_id):
-    """Duplicate a session to next week."""
-    # Get the original session
-    session = get_object_or_404(Session, id=session_id)
-    course = session.course
-
-    # Check if user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can duplicate sessions!")
-        return redirect("course_detail", slug=course.slug)
-
-    # Create a new session with the same properties but dates shifted forward by a week
-    new_session = Session(
-        course=course,
-        title=session.title,
-        description=session.description,
-        is_virtual=session.is_virtual,
-        meeting_link=session.meeting_link,
-        meeting_id="",  # Clear meeting ID as it will be a new meeting
-        location=session.location,
-        price=session.price,
-        enable_rollover=session.enable_rollover,
-        rollover_pattern=session.rollover_pattern,
-    )
-
-    # Set dates one week later
-    time_shift = timezone.timedelta(days=7)
-    new_session.start_time = session.start_time + time_shift
-    new_session.end_time = session.end_time + time_shift
-
-    # Save the new session
-    new_session.save()
-    msg = f"Session '{session.title}' duplicated for {new_session.start_time.strftime('%b %d, %Y')}"
-    messages.success(request, msg)
-
-    return redirect("course_detail", slug=course.slug)
-
-
-def run_create_test_data(request):
-    """Run the create_test_data management command and redirect to homepage."""
-    from django.conf import settings
-
-    if not settings.DEBUG:
-        messages.error(request, "This action is only available in debug mode.")
-        return redirect("index")
-
-    try:
-        call_command("create_test_data")
-        messages.success(request, "Test data has been created successfully!")
-    except Exception as e:
-        messages.error(request, f"Error creating test data: {str(e)}")
-
-    return redirect("index")
-
-
-@login_required
-@require_POST
-def teacher_update_student_attendance(request, classroom_id):
-    """Handle student attendance marking."""
-    try:
-        classroom = VirtualClassroom.objects.get(id=classroom_id)
-        student = request.user  # Student marks their own attendance
-
-        # Check if student is enrolled
-        is_enrolled = False
-        if classroom.course:
-            is_enrolled = classroom.course.enrollments.filter(student=student, status="approved").exists()
-        else:
-            # For classrooms without a course, check VirtualClassroomParticipant table
-            is_enrolled = VirtualClassroomParticipant.objects.filter(classroom=classroom, user=student).exists()
-
-        if not is_enrolled:
-            return JsonResponse({"success": False, "message": "You are not enrolled in this class"}, status=403)
-
-        # Get or create today's session
-        today = timezone.now().date()
-        today_start = timezone.make_aware(datetime.combine(today, datetime.min.time()))
-        today_end = timezone.make_aware(datetime.combine(today, datetime.max.time()))
-
-        if classroom.course:
-            session = Session.objects.filter(
-                course=classroom.course,
-                start_time__range=(today_start, today_end),
-            ).first()
-            if not session:
-                session = Session.objects.create(
-                    course=classroom.course,
-                    title=f"Class on {today.strftime('%Y-%m-%d')}",
-                    start_time=today_start,
-                    end_time=today_end,
-                )
-        else:
-            session = Session.objects.filter(
-                title=f"Class on {today.strftime('%Y-%m-%d')}",
-                start_time__range=(today_start, today_end),
-                course__isnull=True,
-            ).first()
-            if not session:
-                session = Session.objects.create(
-                    title=f"Class on {today.strftime('%Y-%m-%d')}",
-                    start_time=today_start,
-                    end_time=today_end,
-                    course=None,
-                )
-
-        # Mark attendance
-        attendance, created = SessionAttendance.objects.get_or_create(
-            session=session, student=student, defaults={"status": "present"}
-        )
-
-        if not created:
-            # If attendance record already exists, update its status to present
-            attendance.status = "present"
-            attendance.save()
-
-        if request.headers.get("X-Requested-With") == "XMLHttpRequest":
-            return JsonResponse({"success": True, "message": "Attendance updated successfully", "created": created})
-        else:
-            messages.success(request, "Your attendance has been marked.")
-            return redirect("classroom_attendance", classroom_id=classroom_id)
-
-    except VirtualClassroom.DoesNotExist:
-        if request.headers.get("X-Requested-With") == "XMLHttpRequest":
-            return JsonResponse({"success": False, "message": "Classroom not found"}, status=404)
-        else:
-            messages.error(request, "Classroom not found.")
-            return redirect("virtual_classroom_list")
-    except Exception as e:
-        logger.exception("Error updating student attendance: %s", str(e))
-        if request.headers.get("X-Requested-With") == "XMLHttpRequest":
-            return JsonResponse({"success": False, "message": "An internal error occurred"}, status=500)
-        else:
-            messages.error(request, "An internal error occurred.")
-            return redirect("classroom_attendance", classroom_id=classroom_id)
-
-
-@login_required
-@teacher_required
-def student_management(request, course_slug, student_id):
-    """
-    View for managing a specific student in a course.
-    This replaces the modal functionality with a dedicated page.
-    """
-    course = get_object_or_404(Course, slug=course_slug)
-    student = get_object_or_404(User, id=student_id)
-
-    # Check if user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can manage students!")
-        return redirect("course_detail", slug=course.slug)
-
-    # Check if student is enrolled in this course
-    enrollment = get_object_or_404(Enrollment, course=course, student=student)
-
-    # Get sessions for this course
-    sessions = course.sessions.all().order_by("start_time")
-
-    # Get attendance records
-    attendance_records = SessionAttendance.objects.filter(student=student, session__course=course).select_related(
-        "session"
-    )
-
-    # Format attendance data for easier access in template
-    attendance_data = {}
-    for record in attendance_records:
-        attendance_data[record.session.id] = {"status": record.status, "notes": record.notes}
-
-    # Get student progress data
-    progress = CourseProgress.objects.filter(enrollment=enrollment).first()
-    completed_sessions = []
-    if progress:
-        completed_sessions = progress.completed_sessions.all()
-
-    # Calculate attendance rate
-    total_sessions = sessions.count()
-    attended_sessions = SessionAttendance.objects.filter(
-        student=student, session__course=course, status__in=["present", "late"]
-    ).count()
-
-    attendance_rate = 0
-    if total_sessions > 0:
-        attendance_rate = int((attended_sessions / total_sessions) * 100)
-
-    # Get badges earned by this student
-    user_badges = student.badges.all()
-
-    context = {
-        "course": course,
-        "student": student,
-        "enrollment": enrollment,
-        "sessions": sessions,
-        "attendance_data": attendance_data,
-        "attendance_rate": attendance_rate,
-        "progress": progress,
-        "completed_sessions": completed_sessions,
-        "badges": user_badges,
-    }
-
-    return render(request, "courses/student_management.html", context)
-
-
-@login_required
-@teacher_required
-def update_student_progress(request, enrollment_id):
-    """
-    View for updating a student's progress in a course.
-    """
-    enrollment = get_object_or_404(Enrollment, id=enrollment_id)
-    course = enrollment.course
-
-    # Check if user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can update student progress!")
-        return redirect("course_detail", slug=course.slug)
-
-    if request.method == "POST":
-        grade = request.POST.get("grade")
-        status = request.POST.get("status")
-        comments = request.POST.get("comments", "")
-
-        # Update enrollment
-        enrollment.grade = grade
-        enrollment.status = status
-        enrollment.notes = comments
-        enrollment.last_grade_update = timezone.now()
-        enrollment.save()
-
-        messages.success(request, f"Progress for {enrollment.student.username} updated successfully!")
-        return redirect("student_management", course_slug=course.slug, student_id=enrollment.student.id)
-
-    # If not POST, redirect back to student management
-    return redirect("student_management", course_slug=course.slug, student_id=enrollment.student.id)
-
-
-@login_required
-@teacher_required
-def update_teacher_notes(request, enrollment_id):
-    """
-    View for updating teacher's private notes for a student.
-    """
-    enrollment = get_object_or_404(Enrollment, id=enrollment_id)
-    course = enrollment.course
-
-    # Check if user is the course teacher
-    if request.user != course.teacher:
-        messages.error(request, "Only the course teacher can update notes!")
-        return redirect("course_detail", slug=course.slug)
-
-    if request.method == "POST":
-        notes = request.POST.get("teacher_notes", "")
-
-        # If notes have changed, create a new note history entry
-        if enrollment.teacher_notes != notes and notes.strip():
-            NoteHistory.objects.create(enrollment=enrollment, content=notes, created_by=request.user)
-
-        # Update enrollment
-        enrollment.teacher_notes = notes
-        enrollment.save()
-
-        messages.success(request, f"Notes for {enrollment.student.username} updated successfully!")
-
-    return redirect("student_management", course_slug=course.slug, student_id=enrollment.student.id)
-
-
-@login_required
-@teacher_required
-@require_POST
-def update_session_attendance(request):
-    """Update student attendance for a specific session."""
-    try:
-        # Get form data
-        session_id = request.POST.get("session_id")
-        student_id = request.POST.get("student_id")
-        status = request.POST.get("status")
-        notes = request.POST.get("notes", "")
-
-        if not session_id or not student_id or not status:
-            return JsonResponse({"success": False, "message": "Missing required data"}, status=400)
-
-        # Get objects
-        session = get_object_or_404(Session, id=session_id)
-        student = get_object_or_404(User, id=student_id)
-
-        # Check if the current user is the teacher for this session's course
-        if session.course and session.course.teacher != request.user:
-            return JsonResponse(
-                {"success": False, "message": "Only the course teacher can update attendance"}, status=403
-            )
-
-        # Update or create attendance record
-        attendance, created = SessionAttendance.objects.get_or_create(
-            session=session, student=student, defaults={"status": status, "notes": notes}
-        )
-
-        if not created:
-            attendance.status = status
-            attendance.notes = notes
-            attendance.save()
-
-        return JsonResponse({"success": True, "message": "Attendance updated successfully", "created": created})
-
-    except Exception as e:
-        # Log the detailed exception for debugging
-        logger.exception("Error in update_session_attendance: %s", str(e))
-        return JsonResponse({"success": False, "message": "An internal error occurred"}, status=500)
-
-
-@login_required
-@teacher_required
-@require_POST
-def award_badge(request):
-    """
-    AJAX view for awarding badges to students.
-    """
-    if not request.headers.get("X-Requested-With") == "XMLHttpRequest":
-        return JsonResponse({"success": False, "message": "Invalid request"}, status=400)
-
-    student_id = request.POST.get("student_id")
-    badge_type = request.POST.get("badge_type")
-    course_slug = request.POST.get("course_slug")
-
-    if not all([student_id, badge_type, course_slug]):
-        return JsonResponse({"success": False, "message": "Missing required parameters"}, status=400)
-
-    try:
-        student = User.objects.get(id=student_id)
-        course = Course.objects.get(slug=course_slug)
-
-        # Check if user is the course teacher
-        if request.user != course.teacher:
-            return JsonResponse(
-                {"success": False, "message": "Unauthorized: Only the course teacher can award badges"}, status=403
-            )
-
-        # Handle different badge types
-        badge = None
-        if badge_type == "perfect_attendance":
-            badge, created = Badge.objects.get_or_create(
-                name="Perfect Attendance",
-                defaults={"description": "Awarded for attending all sessions in a course", "points": 50},
-            )
-        elif badge_type == "participation":
-            badge, created = Badge.objects.get_or_create(
-                name="Outstanding Participation",
-                defaults={"description": "Awarded for exceptional participation in course discussions", "points": 75},
-            )
-        elif badge_type == "completion":
-            badge, created = Badge.objects.get_or_create(
-                name="Course Completion",
-                defaults={"description": "Awarded for successfully completing the course", "points": 100},
-            )
-        else:
-            return JsonResponse({"success": False, "message": "Invalid badge type"}, status=400)
-
-        # Award the badge to the student
-        user_badge, created = UserBadge.objects.get_or_create(
-            user=student, badge=badge, defaults={"awarded_by": request.user, "course": course}
-        )
-
-        if not created:
-            return JsonResponse({"success": False, "message": "Student already has this badge"}, status=400)
-
-        return JsonResponse(
-            {"success": True, "message": f"Badge '{badge.name}' awarded successfully to {student.username}"}
-        )
-
-    except User.DoesNotExist:
-        return JsonResponse({"success": False, "message": "Student not found"}, status=404)
-    except Course.DoesNotExist:
-        return JsonResponse({"success": False, "message": "Course not found"}, status=404)
-    except Exception as e:
-        logger.exception("Error awarding badge: %s", str(e))
-        return JsonResponse({"success": False, "message": "An internal error occurred"}, status=500)
-
-
-def notification_preferences(request):
-    """
-    Display and update the notification preferences for the logged-in user.
-    """
-    # Get (or create) the user's notification preferences.
-    preference, created = NotificationPreference.objects.get_or_create(user=request.user)
-
-    if request.method == "POST":
-        form = NotificationPreferencesForm(request.POST, instance=preference)
-        if form.is_valid():
-            form.save()
-            messages.success(request, "Your notification preferences have been updated.")
-            # Redirect to the profile page after saving
-            return redirect("profile")
-        else:
-            messages.error(request, "There was an error updating your preferences.")
-    else:
-        form = NotificationPreferencesForm(instance=preference)
-
-    return render(request, "account/notification_preferences.html", {"form": form})
-
-
-@login_required
-def invite_to_study_group(request, group_id):
-    """Invite a user to a study group."""
-    group = get_object_or_404(StudyGroup, id=group_id)
-
-    # Only allow invitations from current group members.
-    if request.user not in group.members.all():
-        messages.error(request, "You must be a member of the group to invite others.")
-        return redirect("study_group_detail", group_id=group.id)
-
-    if request.method == "POST":
-        email_or_username = request.POST.get("email_or_username")
-        # Search by email or username.
-        recipient = User.objects.filter(Q(email=email_or_username) | Q(username=email_or_username)).first()
-        if not recipient:
-            messages.error(request, f"No user found with email or username: {email_or_username}")
-            return redirect("study_group_detail", group_id=group.id)
-
-        # Prevent duplicate invitations or inviting existing members.
-        if recipient in group.members.all():
-            messages.warning(request, f"{recipient.username} is already a member of this group.")
-            return redirect("study_group_detail", group_id=group.id)
-
-        if StudyGroupInvite.objects.filter(group=group, recipient=recipient, status="pending").exists():
-            messages.warning(request, f"An invitation has already been sent to {recipient.username}.")
-            return redirect("study_group_detail", group_id=group.id)
-
-        if group.is_full():
-            messages.error(request, "The study group is full. No new members can be added.")
-            return redirect("study_group_detail", group_id=group.id)
-
-        # Create a notification for the recipient.
-        notification_url = request.build_absolute_uri(reverse("user_invitations"))
-        notification_text = (
-            f"{request.user.username} has invited you to join the study group: {group.name}. "
-            f"View invitations here: {notification_url}"
-        )
-        Notification.objects.create(
-            user=recipient, title="Study Group Invitation", message=notification_text, notification_type="info"
-        )
-
-        messages.success(request, f"Invitation sent to {recipient.username}.")
-        return redirect("study_group_detail", group_id=group.id)
-
-    return redirect("study_group_detail", group_id=group.id)
-
-
-@login_required
-def user_invitations(request):
-    """Display pending study group invitations for the user."""
-    invitations = StudyGroupInvite.objects.filter(recipient=request.user, status="pending").select_related(
-        "group", "sender"
-    )
-    return render(request, "web/study/invitations.html", {"invitations": invitations})
-
-
-@login_required
-def respond_to_invitation(request, invite_id):
-    """Accept or decline a study group invitation."""
-    invite = get_object_or_404(StudyGroupInvite, id=invite_id, recipient=request.user)
-    if request.method == "POST":
-        response = request.POST.get("response")
-        if response == "accept":
-            if invite.group.is_full():
-                messages.error(request, "The study group is full. Cannot join.")
-                return redirect("user_invitations")
-            invite.accept()
-            study_group_url = request.build_absolute_uri(reverse("study_group_detail", args=[invite.group.id]))
-            notification_text = f"{request.user.username} has accepted your invitation to join {invite.group.name}.\
-                 View group details here: {study_group_url}"
-            Notification.objects.create(
-                user=invite.sender, title="Invitation Accepted", message=notification_text, notification_type="success"
-            )
-            messages.success(request, f"You have joined {invite.group.name}.")
-            return redirect("user_invitations")
-        elif response == "decline":
-            invite.decline()
-            study_group_url = request.build_absolute_uri(reverse("study_group_detail", args=[invite.group.id]))
-            notification_text = f"{request.user.username} has declined your invitation to join {invite.group.name}.\
-                 View group details here: {study_group_url}"
-            Notification.objects.create(
-                user=invite.sender, title="Invitation Declined", message=notification_text, notification_type="warning"
-            )
-            messages.info(request, f"You have declined the invitation to {invite.group.name}.")
-            return redirect("user_invitations")
-
-    return redirect("user_invitations")
-
-
-@login_required
-def create_study_group(request):
-    if request.method == "POST":
-        form = StudyGroupForm(request.POST)
-        if form.is_valid():
-            study_group = form.save(commit=False)
-            study_group.creator = request.user
-            study_group.save()
-            # Automatically add the creator as a member
-            study_group.members.add(request.user)
-            messages.success(request, "Study group created successfully!")
-            return redirect("study_group_detail", group_id=study_group.id)
-    else:
-        form = StudyGroupForm()
-    return render(request, "web/study/create_group.html", {"form": form})
-
-
-def features_page(request):
-    """View to display the features page."""
-    return render(request, "features.html")
-
-
-@require_POST
-@csrf_protect
-def feature_vote(request):
-    """API endpoint to handle feature voting."""
-    feature_id = request.POST.get("feature_id")
-    vote_type = request.POST.get("vote")
-
-    if not feature_id or vote_type not in ["up", "down"]:
-        return JsonResponse({"status": "error", "message": "Invalid parameters"}, status=400)
-
-    # Store IP for anonymous users
-    ip_address = None
-    if not request.user.is_authenticated:
-        ip_address = (
-            request.META.get("REMOTE_ADDR") or request.META.get("HTTP_X_FORWARDED_FOR", "").split(",")[0].strip()
-        )
-        if not ip_address:
-            return JsonResponse({"status": "error", "message": "Could not identify user"}, status=400)
-
-    # Process the vote
-    try:
-        # Use transaction to prevent race conditions during vote operations
-        with transaction.atomic():
-            # Check for existing vote
-            existing_vote = None
-            if request.user.is_authenticated:
-                existing_vote = FeatureVote.objects.filter(feature_id=feature_id, user=request.user).first()
-            elif ip_address:
-                existing_vote = FeatureVote.objects.filter(
-                    feature_id=feature_id, ip_address=ip_address, user__isnull=True
-                ).first()
-
-            # Handle the vote logic
-            status_message = "Vote recorded"
-            if existing_vote:
-                if existing_vote.vote == vote_type:
-                    status_message = "You've already cast this vote"
-                else:
-                    # Change vote type if user changed their mind
-                    existing_vote.vote = vote_type
-                    existing_vote.save()
-                    status_message = "Vote changed"
-            else:
-                # Create new vote
-                new_vote = FeatureVote(feature_id=feature_id, vote=vote_type)
-
-                if request.user.is_authenticated:
-                    new_vote.user = request.user
-                else:
-                    new_vote.ip_address = ip_address
-
-                new_vote.save()
-
-            # Get updated counts within the transaction to ensure consistency
-            up_count = FeatureVote.objects.filter(feature_id=feature_id, vote="up").count()
-            down_count = FeatureVote.objects.filter(feature_id=feature_id, vote="down").count()
-
-        # Calculate percentage for visualization
-        total_votes = up_count + down_count
-        up_percentage = round((up_count / total_votes) * 100) if total_votes > 0 else 0
-        down_percentage = round((down_count / total_votes) * 100) if total_votes > 0 else 0
-
-        return JsonResponse(
-            {
-                "status": "success",
-                "message": status_message,
-                "up_count": up_count,
-                "down_count": down_count,
-                "total_votes": total_votes,
-                "up_percentage": up_percentage,
-                "down_percentage": down_percentage,
-            }
-        )
-
-    except Exception as e:
-        logger.exception("Error processing vote: %s", str(e))
-        return JsonResponse({"status": "error", "message": "An internal error occurred"}, status=500)
-
-
-@require_GET
-def feature_vote_count(request):
-    """Get vote counts for one or more features."""
-    feature_ids = request.GET.get("feature_ids", "").split(",")
-    if not feature_ids or not feature_ids[0]:
-        return JsonResponse({"error": "No feature IDs provided"}, status=400)
-
-    result = {}
-    # Get all up and down votes in a single query each for better performance
-    up_votes = (
-        FeatureVote.objects.filter(feature_id__in=feature_ids, vote="up")
-        .values("feature_id")
-        .annotate(count=Count("id"))
-    )
-    down_votes = (
-        FeatureVote.objects.filter(feature_id__in=feature_ids, vote="down")
-        .values("feature_id")
-        .annotate(count=Count("id"))
-    )
-
-    # Create lookup dictionaries for efficient access
-    up_votes_dict = {str(vote["feature_id"]): vote["count"] for vote in up_votes}
-    down_votes_dict = {str(vote["feature_id"]): vote["count"] for vote in down_votes}
-
-    # Check user's votes if authenticated
-    user_votes = {}
-    if request.user.is_authenticated:
-        user_vote_objects = FeatureVote.objects.filter(feature_id__in=feature_ids, user=request.user)
-        for vote in user_vote_objects:
-            user_votes[str(vote.feature_id)] = vote.vote
-    elif request.META.get("REMOTE_ADDR"):
-        # Get IP address for anonymous users
-        ip_address = (
-            request.META.get("REMOTE_ADDR") or request.META.get("HTTP_X_FORWARDED_FOR", "").split(",")[0].strip()
-        )
-        if ip_address:
-            anon_vote_objects = FeatureVote.objects.filter(
-                feature_id__in=feature_ids, ip_address=ip_address, user__isnull=True
-            )
-            for vote in anon_vote_objects:
-                user_votes[str(vote.feature_id)] = vote.vote
-
-    for feature_id in feature_ids:
-        up_count = up_votes_dict.get(feature_id, 0)
-        down_count = down_votes_dict.get(feature_id, 0)
-        total_votes = up_count + down_count
-
-        # Calculate percentages
-        up_percentage = (up_count / total_votes * 100) if total_votes > 0 else 0
-        down_percentage = (down_count / total_votes * 100) if total_votes > 0 else 0
-
-        result[feature_id] = {
-            "up_count": up_count,
-            "down_count": down_count,
-            "total_votes": total_votes,
-            "up_percentage": round(up_percentage, 1),
-            "down_percentage": round(down_percentage, 1),
-            "user_vote": user_votes.get(feature_id, None),
-        }
-
-    return JsonResponse(result)
-
-
-@login_required
-def progress_visualization(request):
-    """Generate and render progress visualization statistics for a student's enrolled courses."""
-    user = request.user
-
-    # Create a unique cache key based on user ID
-    cache_key = f"user_progress_{user.id}"
-    context = cache.get(cache_key)
-
-    if not context:
-        # Cache miss - calculate all data
-        enrollments = Enrollment.objects.filter(student=user)
-        course_stats = calculate_course_stats(enrollments)
-        attendance_stats = calculate_attendance_stats(user, enrollments)
-        learning_activity = calculate_learning_activity(user, enrollments)
-        completion_pace = calculate_completion_pace(enrollments)
-        chart_data = prepare_chart_data(enrollments)
-
-        # Combine all stats into a single context dictionary
-        context = {**course_stats, **attendance_stats, **learning_activity, **completion_pace, **chart_data}
-        # Cache the results (no expiration, we'll invalidate manually via signals)
-        cache.set(cache_key, context, timeout=None)  # None means no expiration
-
-    return render(request, "courses/progress_visualization.html", context)
-
-
-def calculate_course_stats(enrollments):
-    """Calculate statistics on the user's course progress."""
-    total_courses = enrollments.count()
-    courses_completed = enrollments.filter(status="completed").count()
-    topics_mastered = sum(e.progress.completed_sessions.count() for e in enrollments if hasattr(e, "progress"))
-
-    return {
-        "total_courses": total_courses,
-        "courses_completed": courses_completed,
-        "courses_completed_percentage": round((courses_completed / total_courses) * 100) if total_courses else 0,
-        "topics_mastered": topics_mastered,
-    }
-
-
-def calculate_attendance_stats(user, enrollments):
-    """Calculate the user's attendance statistics."""
-    all_attendances = SessionAttendance.objects.filter(
-        student=user, session__course__in=[e.course for e in enrollments]
-    )
-    total_attendance_count = all_attendances.count()
-    present_attendance_count = all_attendances.filter(status__in=["present", "late"]).count()
-
-    return {
-        "average_attendance": (
-            round((present_attendance_count / total_attendance_count) * 100) if total_attendance_count else 0
-        )
-    }
-
-
-def calculate_learning_activity(user, enrollments):
-    """Calculate learning activity metrics like active days, streaks, and learning hours."""
-    all_completed_sessions = [
-        s for s in get_all_completed_sessions(enrollments) if s.start_time and s.end_time and s.end_time > s.start_time
-    ]
-    now = timezone.now()
-
-    # Find the most active day of the week
-    most_active_day = Counter(session.start_time.strftime("%A") for session in all_completed_sessions).most_common(1)
-    # Find the most recent session date
-    last_session_date = (
-        max(all_completed_sessions, key=lambda s: s.start_time).start_time.strftime("%b %d, %Y")
-        if all_completed_sessions
-        else "N/A"
-    )
-
-    streak, _ = LearningStreak.objects.get_or_create(user=user)
-    current_streak = streak.current_streak
-
-    total_learning_hours = round(
-        sum((s.end_time - s.start_time).total_seconds() / 3600 for s in all_completed_sessions), 1
-    )
-
-    # Calculate the number of weeks since the first session, minimum 1 week
-    weeks_since_first_session = (
-        max(1, (now - min(all_completed_sessions, key=lambda s: s.start_time).start_time).days / 7)
-        if all_completed_sessions
-        else 1
-    )
-    avg_sessions_per_week = round(len(all_completed_sessions) / weeks_since_first_session, 1)
-
-    return {
-        # Extract the day name from the most common day tuple, or default to "N/A"
-        "most_active_day": most_active_day[0][0] if most_active_day else "N/A",
-        "last_session_date": last_session_date,
-        "current_streak": current_streak,
-        "total_learning_hours": total_learning_hours,
-        "avg_sessions_per_week": avg_sessions_per_week,
-    }
-
-
-def calculate_completion_pace(enrollments):
-    """Calculate the average completion pace for completed courses."""
-    completed_enrollments = enrollments.filter(status="completed")
-    if not completed_enrollments.exists():
-        return {"completion_pace": "N/A"}
-
-    total_days = sum(
-        (e.completion_date - e.enrollment_date).days
-        for e in completed_enrollments
-        if e.completion_date and e.enrollment_date
-    )
-    avg_days_to_complete = total_days / completed_enrollments.count() if completed_enrollments.count() > 0 else 0
-
-    return {"completion_pace": f"{avg_days_to_complete:.0f} days/course"}
-
-
-def get_all_completed_sessions(enrollments):
-    """Retrieve all completed sessions for a user's enrollments."""
-    return [s for e in enrollments if hasattr(e, "progress") for s in e.progress.completed_sessions.all()]
-
-
-def prepare_chart_data(enrollments):
-    """Prepare data for visualizing user progress in charts."""
-    colors = ["255,99,132", "54,162,235", "255,206,86", "75,192,192", "153,102,255"]
-
-    courses = []
-    progress_dates, sessions_completed = [], []
-
-    for i, e in enumerate(enrollments):
-        color = colors[i % len(colors)]
-        # Basic course data with progress information
-        course_data = {
-            "title": e.course.title,
-            "color": color,
-            "progress": getattr(e.progress, "completion_percentage", 0),
-            "sessions_completed": e.progress.completed_sessions.count() if hasattr(e, "progress") else 0,
-            "total_sessions": e.course.sessions.count(),
-        }
-
-        # Add time series data for courses with completed sessions
-        if hasattr(e, "progress") and e.progress.completed_sessions.exists():
-            # Find the most recent active session date
-            last_session = max(e.progress.completed_sessions.all(), key=lambda s: s.start_time)
-            course_data["last_active"] = last_session.start_time.strftime("%b %d, %Y")
-            # Generate time series data for progress visualization
-            time_data = prepare_time_series_data(e, course_data["total_sessions"])
-            course_data.update(time_data)
-            progress_dates.append(time_data["dates"])
-            sessions_completed.append(time_data["sessions_points"])
-        else:
-            # Default values for courses without progress
-            course_data.update({"last_active": "Not started", "progress_over_time": []})
-            progress_dates.append([])
-            sessions_completed.append([])
-
-        courses.append(course_data)
-
-    return {
-        "courses": courses,
-        # Create a sorted list of all unique dates by flattening and deduplicating
-        "progress_dates": json.dumps(sorted(set(date for dates in progress_dates for date in dates))),
-        "sessions_completed": json.dumps(sessions_completed),
-        "courses_json": json.dumps(courses),
-    }
-
-
-def prepare_time_series_data(enrollment, total_sessions):
-    """Generate time series data for progress visualization."""
-    completed_sessions = (
-        sorted(enrollment.progress.completed_sessions.all(), key=lambda s: s.start_time)
-        if hasattr(enrollment, "progress")
-        else []
-    )
-
-    return {
-        # Calculate progress percentage for each completed session
-        "progress_over_time": [
-            round(((idx + 1) / total_sessions) * 100, 1) if total_sessions else 0
-            for idx, _ in enumerate(completed_sessions)
-        ],
-        # Create sequential session numbers
-        "sessions_points": list(range(1, len(completed_sessions) + 1)),
-        # Format session dates consistently
-        "dates": [s.start_time.strftime("%Y-%m-%d") for s in completed_sessions],
-    }
-
-
-# map views
-
-
-@login_required
-def classes_map(request):
-    """View for displaying classes near the user."""
-    now = timezone.now()
-    sessions = (
-        Session.objects.filter(Q(start_time__gte=now) | Q(start_time__lte=now, end_time__gte=now))
-        .filter(is_virtual=False, location__isnull=False)
-        .exclude(location="")
-        .order_by("start_time")
-        .select_related("course", "course__teacher")
-    )
-    # Get filter parameters
-    course_id = request.GET.get("course")
-    teaching_style = request.GET.get("teaching_style")
-    # Apply filters
-    if course_id:
-        sessions = sessions.filter(course_id=course_id, status="published")
-    if teaching_style:
-        sessions = sessions.filter(teaching_style=teaching_style)
-    # Fetch only necessary course fields
-    courses = Course.objects.only("id", "title").order_by("title")
-    age_groups = Course._meta.get_field("level").choices
-    teaching_styles = list(set(Session.objects.values_list("teaching_style", flat=True)))
-    context = {"sessions": sessions, "courses": courses, "age_groups": age_groups, "teaching_style": teaching_styles}
-    return render(request, "web/classes_map.html", context)
-
-
-@login_required
-def map_data_api(request):
-    """API to return all live and ongoing class data in JSON format."""
-    now = timezone.now()
-    sessions = (
-        Session.objects.filter(
-            Q(start_time__gte=now) | Q(start_time__lte=now, end_time__gte=now)  # Future or Live classes
-        )
-        .filter(Q(is_virtual=False) & ~Q(location=""))
-        .select_related("course", "course__teacher")
-    )
-
-    course_id = request.GET.get("course")
-    age_group = request.GET.get("age_group")
-
-    if course_id:
-        sessions = sessions.filter(course__id=course_id, status="published")
-    if age_group:
-        sessions = sessions.filter(course__level=age_group)
-
-    logger.debug(f"API call with filters: course={course_id}, age={age_group}")
-
-    map_data = []
-    sessions_to_update = []
-    # Limit geocoding to a reasonable number per request
-    MAX_GEOCODING_PER_REQUEST = 5
-    geocoding_count = 0
-    geocoding_errors = 0
-    coordinate_errors = 0
-    for session in sessions:
-        if not session.latitude or not session.longitude:
-            if geocoding_count >= MAX_GEOCODING_PER_REQUEST:
-                logger.warning(f"Geocoding limit reached ({MAX_GEOCODING_PER_REQUEST}). Skipping session {session.id}")
-                continue
-            geocoding_count += 1
-            logger.info(f"Geocoding session {session.id} with location: {session.location}")
-            lat, lng = geocode_address(session.location)
-            if lat is not None and lng is not None:
-                session.latitude = lat
-                session.longitude = lng
-                sessions_to_update.append(session)
-            else:
-                geocoding_errors += 1
-                logger.warning(f"Skipping session {session.id} due to failed geocoding")
-                continue
-
-        try:
-            lat = float(session.latitude)
-            lng = float(session.longitude)
-            map_data.append(
-                {
-                    "id": session.id,
-                    "title": session.title,
-                    "course_title": session.course.title,
-                    "teacher": session.course.teacher.get_full_name() or session.course.teacher.username,
-                    "start_time": session.start_time.isoformat(),
-                    "end_time": session.end_time.isoformat(),
-                    "location": session.location,
-                    "lat": lat,
-                    "lng": lng,
-                    "price": str(session.price or session.course.price),
-                    "url": session.get_absolute_url(),
-                    "course": session.course.title,
-                    "level": session.course.get_level_display(),
-                    "is_virtual": session.is_virtual,
-                }
-            )
-        except (ValueError, TypeError):
-            coordinate_errors += 1
-            logger.warning(
-                f"Skipping session {session.id} due to invalid coordinates: "
-                f"lat={session.latitude}, lng={session.longitude}"
-            )
-            continue
-
-    if sessions_to_update:
-        logger.info(f"Batch updating coordinates for {len(sessions_to_update)} sessions")
-        Session.objects.bulk_update(sessions_to_update, ["latitude", "longitude"])  # Batch update
-
-    # Log summary of issues
-    if geocoding_errors > 0 or coordinate_errors > 0:
-        logger.warning(f"Map data issues: {geocoding_errors} geocoding errors, {coordinate_errors} coordinate errors")
-
-    logger.info(f"Found {len(map_data)} sessions with valid coordinates")
-    return JsonResponse({"sessions": map_data})
-
-
-GITHUB_REPO = "alphaonelabs/alphaonelabs-education-website"
-GITHUB_API_BASE = "https://api.github.com"
-
-logger = logging.getLogger(__name__)
-
-
-def github_api_request(endpoint, params=None, headers=None):
-    """
-    Make a GitHub API request with consistent error handling and timeout.
-    Returns JSON response on success, empty dict on failure.
-    """
-    try:
-        response = requests.get(endpoint, params=params, headers=headers, timeout=10)
-        if response.status_code == 200:
-            return response.json()
-        else:
-            logger.error(f"Failed API request to {endpoint}: {response.status_code} - {response.text}")
-            return {}
-    except requests.RequestException as e:
-        logger.error(f"Request error for {endpoint}: {e}")
-        return {}
-
-
-def get_user_contribution_metrics(username, token):
-    """
-    Use the GitHub GraphQL API to fetch all of the user's merged PRs (across all repos),
-    then filter by the target repo, implementing pagination to ensure complete data.
-    """
-    graphql_endpoint = "https://api.github.com/graphql"
-    headers = {"Authorization": f"Bearer {token}"}
-
-    query = """
-    query($username: String!, $after: String) {
-      user(login: $username) {
-        pullRequests(
-          first: 100
-          after: $after
-          states: MERGED
-          orderBy: { field: CREATED_AT, direction: DESC }
-        ) {
-          totalCount
-          pageInfo {
-            endCursor
-            hasNextPage
-          }
-          nodes {
-            additions
-            deletions
-            createdAt
-            repository {
-              nameWithOwner
-            }
-          }
-        }
-      }
-    }
-    """
-
-    all_filtered_prs = []
-    after_cursor = None
-
-    while True:
-        variables = {"username": username, "after": after_cursor}
-        try:
-            response = requests.post(
-                graphql_endpoint, json={"query": query, "variables": variables}, headers=headers, timeout=15
-            )
-            if response.status_code == 200:
-                data = response.json()
-                if data.get("data") and data["data"].get("user"):
-                    pr_data = data["data"]["user"]["pullRequests"]
-                    prs = pr_data["nodes"]
-
-                    # Filter PRs to the target repository (case insensitive)
-                    target_repo = GITHUB_REPO.lower()
-                    filtered_prs = [pr for pr in prs if pr["repository"]["nameWithOwner"].lower() == target_repo]
-                    all_filtered_prs.extend(filtered_prs)
-
-                    # Check if there are more pages
-                    if pr_data["pageInfo"]["hasNextPage"]:
-                        after_cursor = pr_data["pageInfo"]["endCursor"]
-                    else:
-                        break
-                else:
-                    logger.error("No user or PR data found in GraphQL response.")
-                    break
-            else:
-                logger.error(f"GraphQL error: {response.status_code} - {response.text}")
-                break
-        except Exception as e:
-            logger.error(f"GraphQL request error: {e}")
-            break
-
-    # Prepare final result structure
-    final_result = {
-        "data": {"user": {"pullRequests": {"totalCount": len(all_filtered_prs), "nodes": all_filtered_prs}}}
-    }
-    return final_result
-
-
-def contributor_detail_view(request, username):
-    """
-    View to display detailed information about a specific GitHub contributor.
-    Only accessible to staff members.
-    """
-    cache_key = f"github_contributor_{username}"
-    cached_data = cache.get(cache_key)
-    if cached_data:
-        return render(request, "web/contributor_detail.html", cached_data)
-
-    token = os.environ.get("GITHUB_TOKEN")
-    headers = {"Authorization": f"token {token}"} if token else {}
-
-    # Initialize variables to store contributor data
-    user_data = {}
-    prs_created = 0
-    prs_merged = 0
-    issues_created = 0
-    pr_reviews = 0
-    pr_comments = 0
-    issue_comments = 0
-    lines_added = 0
-    lines_deleted = 0
-    first_contribution_date = "N/A"
-    issue_assignments = 0
-
-    user_endpoint = f"{GITHUB_API_BASE}/users/{username}"
-    user_data = github_api_request(user_endpoint, headers=headers)
-    if not user_data:
-        logger.error("User profile data could not be retrieved.")
-
-    # Pull requests created
-    prs_created_json = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={"q": f"author:{username} type:pr repo:{GITHUB_REPO}"},
-        headers=headers,
-    )
-    prs_created = prs_created_json.get("total_count", 0)
-
-    # Pull requests merged
-    prs_merged_json = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={"q": f"author:{username} type:pr repo:{GITHUB_REPO} is:merged"},
-        headers=headers,
-    )
-    prs_merged = prs_merged_json.get("total_count", 0)
-
-    # Issues created
-    issues_json = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={"q": f"author:{username} type:issue repo:{GITHUB_REPO}"},
-        headers=headers,
-    )
-    issues_created = issues_json.get("total_count", 0)
-
-    # Pull request reviews
-    reviews_json = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={"q": f"reviewer:{username} type:pr repo:{GITHUB_REPO}"},
-        headers=headers,
-    )
-    pr_reviews = reviews_json.get("total_count", 0)
-
-    # Pull requests with comments
-    pr_comments_json = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={"q": f"commenter:{username} type:pr repo:{GITHUB_REPO}"},
-        headers=headers,
-    )
-    pr_comments = pr_comments_json.get("total_count", 0)
-
-    # Issues with comments
-    issue_comments_json = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={"q": f"commenter:{username} type:issue repo:{GITHUB_REPO}"},
-        headers=headers,
-    )
-    issue_comments = issue_comments_json.get("total_count", 0)
-
-    # Oldest PR creation date
-    prs_oldest = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={
-            "q": f"author:{username} type:pr repo:{GITHUB_REPO}",
-            "sort": "created",
-            "order": "asc",
-            "per_page": 1,
-        },
-        headers=headers,
-    )
-    if prs_oldest.get("total_count", 0) > 0:
-        first_contribution_date = prs_oldest["items"][0].get("created_at", "N/A")
-
-    # Issue assignments
-    issue_assignments_json = github_api_request(
-        f"{GITHUB_API_BASE}/search/issues",
-        params={"q": f"assignee:{username} type:issue repo:{GITHUB_REPO}"},
-        headers=headers,
-    )
-    issue_assignments = issue_assignments_json.get("total_count", 0)
-    metrics = get_user_contribution_metrics(username, token)
-    pr_data = metrics.get("data", {}).get("user", {}).get("pullRequests", {}).get("nodes", [])
-    for pr in pr_data:
-        lines_added += pr.get("additions", 0)
-        lines_deleted += pr.get("deletions", 0)
-
-    # Update user_data with additional metrics
-    user_data.update(
-        {
-            "reactions_received": user_data.get("reactions_received", 0),
-            "mentorship_score": user_data.get("mentorship_score", 0),
-            "collaboration_score": user_data.get("collaboration_score", 0),
-            "issue_assignments": issue_assignments,
-        }
-    )
-
-    # Prepare context for the template
-    context = {
-        "user": user_data,
-        "prs_created": prs_created,
-        "prs_merged": prs_merged,
-        "pr_reviews": pr_reviews,
-        "issues_created": issues_created,
-        "issue_comments": issue_comments,
-        "pr_comments": pr_comments,
-        "lines_added": lines_added,
-        "lines_deleted": lines_deleted,
-        "first_contribution_date": first_contribution_date,
-        "chart_data": {
-            "prs_created": prs_created,
-            "prs_merged": prs_merged,
-            "pr_reviews": pr_reviews,
-            "issues_created": issues_created,
-            "issue_assignments": issue_assignments,
-            "pr_comments": pr_comments,
-            "issue_comments": issue_comments,
-            "lines_added": lines_added,
-            "lines_deleted": lines_deleted,
-            "first_contribution_date": (first_contribution_date if first_contribution_date != "N/A" else "N/A"),
-        },
-    }
-
-    # Cache for 1 hour
-    cache.set(cache_key, context, 3600)
-    return render(request, "web/contributor_detail.html", context)
-
-
-@login_required
-def all_study_groups(request):
-    """Display all study groups across courses."""
-    # Get all study groups
-    groups = StudyGroup.objects.all().order_by("-created_at")
-
-    # Group study groups by course
-    courses_with_groups = {}
-    for group in groups:
-        if group.course not in courses_with_groups:
-            courses_with_groups[group.course] = []
-        courses_with_groups[group.course].append(group)
-
-    # Handle creating a new study group
-    if request.method == "POST":
-        course_id = request.POST.get("course")
-        name = request.POST.get("name")
-        description = request.POST.get("description")
-        max_members = request.POST.get("max_members", 10)
-        is_private = request.POST.get("is_private", False) == "on"  # Convert checkbox to boolean
-
-        try:
-            # Validate the input
-            if not course_id or not name or not description:
-                raise ValueError("All fields are required")
-
-            # Get the course
-            course = Course.objects.get(id=course_id)
-
-            # Create the group
-            group = StudyGroup.objects.create(
-                course=course,
-                creator=request.user,
-                name=name,
-                description=description,
-                max_members=int(max_members),
-                is_private=is_private,
-            )
-
-            # Add the creator as a member
-            group.members.add(request.user)
-
-            messages.success(request, "Study group created successfully!")
-            return redirect("study_group_detail", group_id=group.id)
-        except Course.DoesNotExist:
-            messages.error(request, "Course not found.")
-        except ValueError as e:
-            messages.error(request, str(e))
-        except Exception as e:
-            messages.error(request, f"Error creating study group: {str(e)}")
-
-    # Get user's enrollments for the create group form
-    enrollments = request.user.enrollments.filter(status="approved").select_related("course")
-    enrolled_courses = [enrollment.course for enrollment in enrollments]
-
-    return render(
-        request,
-        "web/study/all_groups.html",
-        {
-            "courses_with_groups": courses_with_groups,
-            "enrolled_courses": enrolled_courses,
-        },
-    )
-
-
-@login_required
-def membership_checkout(request, plan_id: int) -> HttpResponse:
-    """Display the membership checkout page."""
-    plan = get_object_or_404(MembershipPlan, id=plan_id)
-
-    # Default to monthly billing
-    billing_period = request.GET.get("billing_period", "monthly")
-
-    context = {
-        "plan": plan,
-        "billing_period": billing_period,
-        "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY,
-    }
-
-    return render(request, "checkout.html", context)
-
-
-@login_required
-def create_membership_subscription(request) -> JsonResponse:
-    """Create a new membership subscription."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Invalid request method"}, status=400)
-
-    try:
-        data = json.loads(request.body)
-        plan_id = data.get("plan_id")
-        payment_method_id = data.get("payment_method_id")
-        billing_period = data.get("billing_period", "monthly")
-
-        if not all([plan_id, payment_method_id, billing_period]):
-            return JsonResponse({"error": "Missing required fields"}, status=400)
-
-        # Create subscription using helper function
-        result = create_subscription(
-            user=request.user,
-            plan_id=plan_id,
-            payment_method_id=payment_method_id,
-            billing_period=billing_period,
-        )
-
-        if not result["success"]:
-            return JsonResponse({"error": result["error"]}, status=400)
-
-        # Helper function to extract client_secret
-        def get_client_secret(subscription):
-            """Extract client_secret safely from a subscription object."""
-            if (
-                hasattr(subscription, "latest_invoice")
-                and subscription.latest_invoice
-                and hasattr(subscription.latest_invoice, "payment_intent")
-            ):
-                return subscription.latest_invoice.payment_intent.client_secret
-            return None
-
-        return JsonResponse(
-            {
-                "subscription": result["subscription"],
-                "client_secret": get_client_secret(result["subscription"]),
-            },
-        )
-
-    except json.JSONDecodeError as e:
-        logger.warning("Invalid JSON in create_membership_subscription: %s", str(e))
-        return JsonResponse({"error": "Invalid JSON format"}, status=400)
-    except stripe.error.CardError as e:
-        logger.warning("Card error in create_membership_subscription: %s", str(e))
-        return JsonResponse({"error": "Card payment failed"}, status=400)
-    except stripe.error.StripeError as e:
-        logger.error("Stripe error in create_membership_subscription: %s", str(e))
-        return JsonResponse({"error": "Payment processing error"}, status=500)
-    except KeyError as e:
-        logger.warning("Missing key in create_membership_subscription: %s", str(e))
-        return JsonResponse({"error": "Invalid request data"}, status=400)
-    except Exception as e:
-        logger.error("Unexpected error in create_membership_subscription: %s", str(e))
-        return JsonResponse({"error": "An internal error occurred"}, status=500)
-
-
-@login_required
-def membership_success(request) -> HttpResponse:
-    """Display the membership success page."""
-    try:
-        membership = request.user.membership
-        context = {
-            "membership": membership,
-        }
-        return render(request, "membership_success.html", context)
-    except (AttributeError, ObjectDoesNotExist):
-        messages.info(request, "You don't have an active membership subscription.")
-        return redirect("index")
-
-
-@login_required
-def membership_settings(request) -> HttpResponse:
-    """Display the membership settings page."""
-    try:
-        membership = request.user.membership
-
-        # Get Stripe invoices
-        if membership.stripe_customer_id:
-            setup_stripe()
-            invoices = stripe.Invoice.list(customer=membership.stripe_customer_id, limit=12)
-        else:
-            invoices = []
-
-        # Get subscription events
-        events = MembershipSubscriptionEvent.objects.filter(user=request.user).order_by("-created_at")[:10]
-
-        context = {
-            "membership": membership,
-            "invoices": invoices.data if hasattr(invoices, "data") and invoices.data else [],
-            "events": events,
-        }
-        return render(request, "membership_settings.html", context)
-    except (AttributeError, ObjectDoesNotExist):
-        return redirect("index")
-
-
-@login_required
-def cancel_membership(request) -> HttpResponse:
-    """Cancel the user's membership subscription."""
-    if request.method != "POST":
-        return redirect("membership_settings")
-
-    try:
-        result = cancel_subscription(request.user)
-
-        if result["success"]:
-            messages.success(
-                request,
-                "Your subscription has been cancelled and will end at the current billing period.",
-            )
-        else:
-            messages.error(request, result["error"])
-
-    except stripe.error.StripeError:
-        logger.exception("Stripe error in cancel_membership")
-        messages.error(request, "An internal error occurred")
-    except ObjectDoesNotExist:
-        messages.error(request, "No membership found for your account.")
-    except Exception:
-        logger.exception("Unexpected error in cancel_membership")
-        messages.error(request, "An internal error occurred")
-
-    return redirect("membership_settings")
-
-
-@login_required
-def reactivate_membership(request) -> HttpResponse:
-    """Reactivate a cancelled membership subscription."""
-    if request.method != "POST":
-        return redirect("membership_settings")
-
-    try:
-        result = reactivate_subscription(request.user)
-
-        if result["success"]:
-            messages.success(request, "Your subscription has been reactivated.")
-        else:
-            messages.error(request, result["error"])
-
-    except stripe.error.StripeError as e:
-        logger.error("Stripe error in reactivate_membership: %s", str(e))
-        messages.error(request, "An internal error occurred")
-    except ObjectDoesNotExist:
-        messages.error(request, "No membership found for your account.")
-    except Exception as e:
-        logger.error("Unexpected error in reactivate_membership: %s", str(e))
-        messages.error(request, "An internal error occurred")
-
-    return redirect("membership_settings")
-
-
-@login_required
-def update_payment_method(request) -> HttpResponse:
-    """Display the update payment method page."""
-    try:
-        membership = request.user.membership
-
-        # Get current payment method
-        if membership.stripe_customer_id:
-            setup_stripe()
-            payment_methods = stripe.PaymentMethod.list(customer=membership.stripe_customer_id, type="card")
-            current_payment_method = payment_methods.data[0] if payment_methods.data else None
-        else:
-            current_payment_method = None
-
-        context = {
-            "membership": membership,
-            "current_payment_method": current_payment_method,
-            "stripe_public_key": settings.STRIPE_PUBLISHABLE_KEY,
-        }
-        return render(request, "update_payment_method.html", context)
-    except (AttributeError, ObjectDoesNotExist):
-        return redirect("membership_settings")
-
-
-@login_required
-def update_payment_method_api(request) -> JsonResponse:
-    """Update the payment method for a subscription."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Invalid request method"}, status=400)
-
-    try:
-        data = json.loads(request.body)
-        payment_method_id = data.get("payment_method_id")
-
-        if not payment_method_id:
-            return JsonResponse({"error": "Missing payment method ID"}, status=400)
-
-        membership = request.user.membership
-
-        if not membership.stripe_customer_id:
-            return JsonResponse({"error": "No active subscription found"}, status=400)
-
-        setup_stripe()
-
-        # Attach payment method to customer
-        stripe.PaymentMethod.attach(payment_method_id, customer=membership.stripe_customer_id)
-
-        # Set as default payment method
-        stripe.Customer.modify(
-            membership.stripe_customer_id,
-            invoice_settings={"default_payment_method": payment_method_id},
-        )
-
-        return JsonResponse({"success": True})
-
-    except stripe.error.CardError as e:
-        logger.warning("Card error in update_payment_method_api: %s", str(e))
-        return JsonResponse({"error": "Card payment failed"}, status=400)
-    except stripe.error.InvalidRequestError as e:
-        logger.warning("Invalid request in update_payment_method_api: %s", str(e))
-        return JsonResponse({"error": "Invalid payment method"}, status=400)
-    except stripe.error.StripeError as e:
-        logger.error("Stripe error in update_payment_method_api: %s", str(e))
-        return JsonResponse({"error": "Payment processing error"}, status=500)
-    except Exception as e:
-        logger.error("Unexpected error in update_payment_method_api: %s", str(e))
-        return JsonResponse({"error": "An internal error occurred"}, status=500)
-
-
-def social_media_manager_required(user):
-    """Check if user has social media manager permissions."""
-    return user.is_authenticated and (user.is_staff or getattr(user.profile, "is_social_media_manager", False))
-
-
-@user_passes_test(social_media_manager_required)
-def get_twitter_client():
-    """Initialize the Tweepy client."""
-    auth = tweepy.OAuthHandler(settings.TWITTER_API_KEY, settings.TWITTER_API_SECRET_KEY)
-    auth.set_access_token(settings.TWITTER_ACCESS_TOKEN, settings.TWITTER_ACCESS_TOKEN_SECRET)
-    return tweepy.API(auth)
-
-
-@user_passes_test(social_media_manager_required, login_url="/accounts/login/")
-def social_media_dashboard(request):
-    # Fetch all posts that haven't been posted yet
-    posts = ScheduledPost.objects.filter(posted=False).order_by("-id")
-    return render(request, "social_media_dashboard.html", {"posts": posts})
-
-
-@user_passes_test(social_media_manager_required)
-def post_to_twitter(request, post_id):
-    post = get_object_or_404(ScheduledPost, id=post_id)
-    if request.method == "POST":
-        client = get_twitter_client()
-        try:
-            if post.image:
-                # Upload the image file from disk
-                media = client.media_upload(post.image.path)
-                client.update_status(post.content, media_ids=[media.media_id])
-            else:
-                client.update_status(post.content)
-            post.posted = True
-            post.posted_at = timezone.now()
-            post.save()
-        except Exception as e:
-            print(f"Error posting tweet: {e}")
-        return redirect("social_media_dashboard")
-    return redirect("social_media_dashboard")
-
-
-@user_passes_test(social_media_manager_required)
-def create_scheduled_post(request):
-    if request.method == "POST":
-        content = request.POST.get("content")
-        image = request.FILES.get("image")  # Get the uploaded image, if provided.
-        if not content:
-            messages.error(request, "Post content cannot be empty.")
-            return redirect("social_media_dashboard")
-        ScheduledPost.objects.create(
-            content=content, image=image, scheduled_time=timezone.now()  # This saves the image file.
-        )
-        messages.success(request, "Post created successfully!")
-    return redirect("social_media_dashboard")
-
-
-@user_passes_test(social_media_manager_required)
-def delete_post(request, post_id):
-    """Delete a scheduled post."""
-    post = get_object_or_404(ScheduledPost, id=post_id)
-    if request.method == "POST":
-        post.delete()
-    return redirect("social_media_dashboard")
-
-
-def generate_discount_code(length=8):
-    return "".join(random.choices(string.ascii_uppercase + string.digits, k=length))
-
-
-@login_required
-def apply_discount_via_referrer(request) -> HttpResponse:
-    """Apply a discount code when a user shares a course on Twitter.
-
-    Args:
-        request: The HTTP request object
-
-    Returns:
-        HttpResponse: A redirect to the profile page or an error response
-    """
-    if request.method == "GET":
-        course_id = request.GET.get("course_id")
-        if not course_id:
-            return HttpResponseBadRequest("Course ID not provided.")
-
-        course = get_object_or_404(Course, id=course_id)
-
-        # Validate that the referrer is from Twitter
-        referrer = request.META.get("HTTP_REFERER", "").lower()
-        valid_twitter_domains = ["twitter.com", "t.co", "x.com"]
-        is_valid_referrer = any(domain in referrer for domain in valid_twitter_domains)
-
-        # Skip the referrer check in development environment for testing
-        if settings.DEBUG:
-            logger.warning("Bypassing Twitter referrer check in DEBUG mode")
-        elif not is_valid_referrer:
-            messages.error(request, "You must click the link from Twitter to claim your discount.")
-            return redirect("profile")
-        # Create or retrieve an existing discount record.
-        discount = Discount.objects.filter(user=request.user, course=course, used=False).first()
-        if discount is None:
-            discount = Discount.objects.create(
-                user=request.user,
-                course=course,
-                code=generate_discount_code(),
-                discount_percentage=5.00,
-                valid_from=timezone.now(),
-                valid_until=default_valid_until(),
-            )
-
-        messages.success(request, "Thank you for sharing! Your discount code is now available in your profile.")
-        # Redirect user to their profile where discount codes are rendered.
-        return redirect("profile")
-    else:
-        return HttpResponseBadRequest("Invalid request method.")
-
-
-def users_list(request: HttpRequest) -> HttpResponse:
-    """
-    Display a list of users who have their profile set to public,
-    ordered by most recent updates.
-    """
-    profiles = Profile.objects.filter(is_profile_public=True).select_related("user").order_by("-updated_at")
-
-    # Add statistics for each user to create fun scorecards
-    for profile in profiles:
-        if profile.is_teacher:
-            # Teacher stats
-            courses = Course.objects.filter(teacher=profile.user).prefetch_related("enrollments", "reviews")
-            profile.total_courses = courses.count()
-            profile.total_students = sum(course.enrollments.filter(status="approved").count() for course in courses)
-            # Get average rating across all courses
-            course_ratings = [course.average_rating for course in courses if course.average_rating > 0]
-            profile.avg_rating = round(sum(course_ratings) / len(course_ratings), 1) if course_ratings else 0
-        else:
-            # Student stats
-            enrollments = Enrollment.objects.filter(student=profile.user).select_related("course")
-            profile.total_courses = enrollments.count()
-            completed_enrollments = enrollments.filter(status="completed")
-            profile.total_completed = completed_enrollments.count()
-
-            # Calculate average progress across all courses
-            total_progress = 0
-            progress_count = 0
-            enrollment_ids = [e.id for e in enrollments]
-            existing_progresses = {
-                p.enrollment_id: p for p in CourseProgress.objects.filter(enrollment_id__in=enrollment_ids)
-            }
-
-            for enrollment in enrollments:
-                progress = existing_progresses.get(enrollment.id)
-                if not progress:
-                    progress = CourseProgress.objects.create(enrollment=enrollment)
-                total_progress += progress.completion_percentage
-                progress_count += 1
-            profile.avg_progress = round(total_progress / progress_count) if progress_count > 0 else 0
-
-            # Add achievements count
-            profile.achievements_count = Achievement.objects.filter(student=profile.user).count()
-
-    # Pagination: 12 profiles per page
-    paginator = Paginator(profiles, 12)
-    page_number = request.GET.get("page")
-    page_obj = paginator.get_page(page_number)
-
-    context = {
-        "page_obj": page_obj,
-    }
-
-    return render(request, "users_list.html", context)
-
-
-@login_required
-def topic_vote(request, pk):
-    """Handle voting on a topic."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Only POST method allowed"}, status=405)
-
-    try:
-        topic = ForumTopic.objects.get(pk=pk)
-        vote_type = request.POST.get("vote_type")
-
-        if vote_type not in ["up", "down"]:
-            # For form submissions, redirect back with an error message if needed
-            messages.error(request, "Invalid vote type")
-            return redirect("topic_vote", pk=topic.id)
-
-        # Check if user already voted on this topic
-        vote, created = ForumVote.objects.get_or_create(
-            user=request.user, topic=topic, defaults={"vote_type": vote_type}
-        )
-
-        if not created:
-            # User already voted, check if they're changing their vote
-            if vote.vote_type == vote_type:
-                # Same vote type, so remove the vote
-                vote.delete()
-            else:
-                # Different vote type, so update the vote
-                vote.vote_type = vote_type
-                vote.save()
-
-        # After processing the vote, redirect back to the topic page
-        return redirect("forum_topic", category_slug=topic.category.slug, topic_id=topic.id)
-
-    except ForumTopic.DoesNotExist:
-        # Handle case when topic doesn't exist
-        messages.error(request, "Topic not found")
-        return redirect("forum_categories")
-
-
-@login_required
-def reply_vote(request, pk):
-    """Handle voting on a reply."""
-    if request.method != "POST":
-        return JsonResponse({"error": "Only POST method allowed"}, status=405)
-
-    try:
-        reply = ForumReply.objects.get(pk=pk)
-        vote_type = request.POST.get("vote_type")
-
-        if vote_type not in ["up", "down"]:
-            messages.error(request, "Invalid vote type")
-            return redirect("forum_topic", category_slug=reply.topic.category.slug, topic_id=reply.topic.id)
-
-        # Check if user already voted on this reply
-        vote, created = ForumVote.objects.get_or_create(
-            user=request.user, reply=reply, defaults={"vote_type": vote_type}
-        )
-
-        if not created:
-            # User already voted, check if they're changing their vote
-            if vote.vote_type == vote_type:
-                # Same vote type, so remove the vote
-                vote.delete()
-            else:
-                # Different vote type, so update the vote
-                vote.vote_type = vote_type
-                vote.save()
-
-        # After processing the vote, redirect back to the topic page
-        return redirect("forum_topic", category_slug=reply.topic.category.slug, topic_id=reply.topic.id)
-
-    except ForumReply.DoesNotExist:
-        messages.error(request, "Reply not found")
-        return redirect("forum_categories")
-
-
-def topic_detail(request, pk):
-    topic = get_object_or_404(ForumTopic, pk=pk)
-
-    # Get the user's vote on this topic if any
-    user_topic_vote = None
-    if request.user.is_authenticated:
-        try:
-            vote = ForumVote.objects.get(topic=topic, user=request.user)
-            user_topic_vote = vote.vote_type
-        except ForumVote.DoesNotExist:
-            pass
-
-    # Get user votes on replies
-    user_reply_votes = {}
-    if request.user.is_authenticated:
-        reply_votes = ForumVote.objects.filter(reply__topic=topic, user=request.user).values_list(
-            "reply_id", "vote_type"
-        )
-        user_reply_votes = dict(reply_votes)
-
-    context = {
-        "topic": topic,
-        "user_topic_vote": user_topic_vote,
-        "user_reply_votes": user_reply_votes,
-        # other context variables
-    }
-
-    return render(request, "web/forum/topic.html", context)
-
-
-def contributors_list_view(request):
-    # Check if cached data is available
-    cached_context = cache.get("contributors_context")
-    if cached_context:
-        return render(request, "web/contributors_list.html", cached_context)
-
-    # Initialize a dictionary to track contributor stats
-    contributor_stats = {}
-
-    # Function to add a contributor to our stats dictionary
-    def add_contributor(username, avatar_url, profile_url):
-        if username not in contributor_stats:
-            contributor_stats[username] = {
-                "username": username,
-                "avatar_url": avatar_url,
-                "profile_url": profile_url,
-                "merged_pr_count": 0,
-                "closed_pr_count": 0,
-                "open_pr_count": 0,
-                "total_pr_count": 0,
-                "prs_url": f"https://github.com/AlphaOneLabs/education-website/pulls?q=is:pr+author:{username}",
-            }
-
-    try:
-        # Fetch closed PRs first (includes both merged and non-merged closed PRs)
-        closed_prs = []
-        for page in range(1, 11):  # Limit to 10 pages to prevent hitting API rate limits
-            response = github_api_request(
-                f"{GITHUB_API_BASE}/repos/AlphaOneLabs/education-website/pulls",
-                params={"state": "closed", "per_page": 100, "page": page},
-            )
-            if not response or len(response) == 0:
-                break
-
-            closed_prs.extend(response)
-            time.sleep(0.5)  # Add delay to avoid hitting rate limits
-
-        # Process closed PRs
-        for pr in closed_prs:
-            username = pr["user"]["login"]
-
-            # Skip bots and specific users
-            if "[bot]" in username or "dependabot" in username or username == "A1L13N":
-                continue
-
-            avatar_url = pr["user"]["avatar_url"]
-            profile_url = pr["user"]["html_url"]
-
-            # Add to our tracking
-            add_contributor(username, avatar_url, profile_url)
-
-            # Update the appropriate count based on whether it was merged
-            if pr["merged_at"]:
-                contributor_stats[username]["merged_pr_count"] += 1
-            else:
-                contributor_stats[username]["closed_pr_count"] += 1
-
-        # Now fetch open PRs
-        open_prs = []
-        for page in range(1, 6):  # Limit to 5 pages for open PRs
-            response = github_api_request(
-                f"{GITHUB_API_BASE}/repos/AlphaOneLabs/education-website/pulls",
-                params={"state": "open", "per_page": 100, "page": page},
-            )
-            if not response or len(response) == 0:
-                break
-
-            open_prs.extend(response)
-            time.sleep(0.5)  # Add delay to avoid hitting rate limits
-
-        # Process open PRs
-        for pr in open_prs:
-            username = pr["user"]["login"]
-
-            # Skip bots and specific users
-            if "[bot]" in username or "dependabot" in username or username == "A1L13N":
-                continue
-
-            avatar_url = pr["user"]["avatar_url"]
-            profile_url = pr["user"]["html_url"]
-
-            # Add to our tracking
-            add_contributor(username, avatar_url, profile_url)
-
-            # Update open PR count
-            contributor_stats[username]["open_pr_count"] += 1
-
-        # Calculate total PR count and filter out users with no merged PRs
-        contributors = []
-        for username, stats in contributor_stats.items():
-            # Skip contributors with no merged PRs
-            if stats["merged_pr_count"] == 0:
-                continue
-
-            # Calculate total PR count
-            stats["total_pr_count"] = stats["merged_pr_count"] + stats["closed_pr_count"] + stats["open_pr_count"]
-
-            # Calculate a smart score that prioritizes merged PRs but penalizes imbalances
-            # Formula: (merged_pr_count * 10) - penalties for imbalanced contributions
-            smart_score = stats["merged_pr_count"] * 10
-
-            # Penalize if closed PRs are more than half of merged PRs (could indicate issues with code quality)
-            if stats["closed_pr_count"] > (stats["merged_pr_count"] / 2):
-                smart_score -= (stats["closed_pr_count"] - (stats["merged_pr_count"] / 2)) * 2
-
-            # Penalize if open PRs are more than merged PRs (could indicate abandonment issues)
-            if stats["open_pr_count"] > stats["merged_pr_count"]:
-                smart_score -= stats["open_pr_count"] - stats["merged_pr_count"]
-
-            # Calculate a contribution ratio: merged/(total) - higher is better
-            if stats["total_pr_count"] > 0:
-                stats["contribution_ratio"] = stats["merged_pr_count"] / stats["total_pr_count"]
-            else:
-                stats["contribution_ratio"] = 0
-
-            # Store the smart score
-            stats["smart_score"] = smart_score
-
-            contributors.append(stats)
-
-        # Sort by smart score (primary) and then by merged PR count (secondary)
-        contributors.sort(key=lambda x: (x["smart_score"], x["merged_pr_count"]), reverse=True)
-
-        # Store the context in cache for 12 hours
-        context = {"contributors": contributors}
-        cache.set("contributors_context", context, 12 * 60 * 60)
-
-        return render(request, "web/contributors_list.html", context)
-
-    except Exception as e:
-        # Log the error
-        print(f"Error fetching contributors: {e}")
-        # Return an empty list in case of error
-        return render(request, "web/contributors_list.html", {"contributors": []})
-
-
-@login_required
-def video_request_list(request):
-    """View for listing video requests with optional category filtering."""
-    # Get category filter from query params
-    selected_category = request.GET.get("category")
-
-    # Base queryset
-    requests = VideoRequest.objects.select_related("requester", "category").order_by("-created_at")
-
-    # Apply category filter if provided
-    if selected_category:
-        requests = requests.filter(category__slug=selected_category)
-        selected_category_obj = get_object_or_404(Subject, slug=selected_category)
-        selected_category_display = selected_category_obj.name
-    else:
-        selected_category_display = None
-
-    # Get category counts for sidebar
-    category_counts = {
-        category.slug: VideoRequest.objects.filter(category=category).count() for category in Subject.objects.all()
-    }
-
-    # Context
-    context = {
-        "requests": requests,
-        "categories": Subject.objects.all(),
-        "category_counts": category_counts,
-        "selected_category": selected_category,
-        "selected_category_display": selected_category_display,
-    }
-
-    return render(request, "videos/request_list.html", context)
-
-
-@login_required
-def submit_video_request(request: HttpRequest) -> HttpResponse:
-    """View for submitting a new video request."""
-    if request.method == "POST":
-        form = VideoRequestForm(request.POST)
-        if form.is_valid():
-            video_request = form.save(commit=False)
-            video_request.requester = request.user
-            video_request.save()
-
-            messages.success(request, "Your video request has been submitted successfully!")
-            return redirect("video_request_list")
-    else:
-        form = VideoRequestForm()
-
-    return render(request, "videos/submit_request.html", {"form": form})
-
-
-class SurveyListView(LoginRequiredMixin, ListView):
-    model = Survey
-    template_name = "surveys/list.html"
-    login_url = "/accounts/login/"
-
-
-class SurveyCreateView(LoginRequiredMixin, CreateView):
-    model = Survey
-    form_class = SurveyForm
-    template_name = "surveys/create.html"
-    login_url = "/accounts/login/"
-
-    def form_valid(self, form):
-        form.instance.author = self.request.user
-        survey = form.save()
-
-        # Process questions
-        question_texts = self.request.POST.getlist("question_text[]")
-        question_types = self.request.POST.getlist("question_type[]")
-        question_choices = self.request.POST.getlist("question_choices[]")
-        scale_mins = self.request.POST.getlist("scale_min[]")
-        scale_maxs = self.request.POST.getlist("scale_max[]")
-
-        for i, (q_text, q_type) in enumerate(zip(question_texts, question_types)):
-            if q_text.strip():
-                # Convert scale values to integers with proper error handling
-                scale_min = 1
-                scale_max = 5
-
-                try:
-                    if q_type == "scale" and i < len(scale_mins) and scale_mins[i]:
-                        scale_min = int(scale_mins[i])
-                    if q_type == "scale" and i < len(scale_maxs) and scale_maxs[i]:
-                        scale_max = int(scale_maxs[i])
-                except (ValueError, IndexError):
-                    # Use defaults if there's an error
-                    scale_min = 1
-                    scale_max = 5
-
-                question = Question.objects.create(
-                    survey=survey,
-                    text=q_text.strip(),
-                    type=q_type,  # This should match your model field name
-                    scale_min=scale_min,
-                    scale_max=scale_max,
-                )
-
-                # Handle choices based on question type
-                if q_type == "true_false":
-                    Choice.objects.create(question=question, text="True")
-                    Choice.objects.create(question=question, text="False")
-                elif q_type == "scale":
-                    for num in range(question.scale_min, question.scale_max + 1):
-                        Choice.objects.create(question=question, text=str(num))
-                elif q_type in ["mcq", "checkbox"]:
-                    # Make sure we have choices for this question
-                    if i < len(question_choices):
-                        for choice_text in question_choices[i].split("\n"):
-                            if choice_text.strip():
-                                Choice.objects.create(question=question, text=choice_text.strip())
-
-        return redirect("surveys")
-
-
-class SurveyDetailView(LoginRequiredMixin, DetailView):
-    model = Survey
-    template_name = "surveys/detail.html"
-    login_url = "/accounts/login/"
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-        # Check if user has already submitted this survey
-        context["already_submitted"] = Response.objects.filter(
-            user=self.request.user, question__survey=self.object
-        ).exists()
-        # Check if user is the creator of this survey
-        context["is_creator"] = self.object.author == self.request.user
-        return context
-
-
-@login_required
-def submit_survey(request, pk):
-    survey = get_object_or_404(Survey, pk=pk)
-
-    # Check if user already submitted
-    if Response.objects.filter(user=request.user, question__survey=survey).exists():
-        messages.error(request, "You've already submitted this survey!")
-        return redirect("survey-detail", pk=survey.id)
-
-    if request.method == "POST":
-        for question in survey.question_set.all():
-            if question.required and not request.POST.get(f"question_{question.id}"):
-                messages.error(request, f"Please answer required question: {question.text}")
-                return redirect("survey-detail", pk=survey.id)
-
-            if question.type == "checkbox":
-                choices = request.POST.getlist(f"question_{question.id}")
-                for choice_id in choices:
-                    try:
-                        choice = Choice.objects.get(id=choice_id)
-                        if choice.question_id == question.id:
-                            Response.objects.create(user=request.user, question=question, choice=choice)
-                        else:
-                            messages.error(request, "Invalid choice selected")
-                            return redirect("survey-detail", pk=survey.id)
-                    except Choice.DoesNotExist:
-                        messages.error(request, "Invalid choice selected")
-                        return redirect("survey-detail", pk=survey.id)
-            elif question.type == "text":
-                Response.objects.create(
-                    user=request.user, question=question, text_answer=request.POST.get(f"question_{question.id}")
-                )
-            else:
-                choice_id = request.POST.get(f"question_{question.id}")
-                if choice_id:
-                    try:
-                        choice = Choice.objects.get(id=choice_id)
-                        if choice.question_id == question.id:
-                            Response.objects.create(user=request.user, question=question, choice=choice)
-                        else:
-                            messages.error(request, "Invalid choice selected")
-                            return redirect("survey-detail", pk=survey.id)
-                    except Choice.DoesNotExist:
-                        messages.error(request, "Invalid choice selected")
-                        return redirect("survey-detail", pk=survey.id)
-
-        messages.success(request, "Survey submitted successfully!")
-        return redirect("survey-results", pk=survey.id)
-
-    return redirect("survey-detail", pk=survey.id)
-
-
-class SurveyResultsView(LoginRequiredMixin, DetailView):
-    model = Survey
-    template_name = "surveys/results.html"
-    login_url = "/accounts/login/"
-
-    def get_context_data(self, **kwargs):
-        context = super().get_context_data(**kwargs)
-
-        # Process survey results
-        results = []
-        total_participants = 0
-        most_answered_question = None
-        max_responses = 0
-        top_choice = None
-        bottom_choice = None
-        overall_top_choice_count = 0
-        overall_bottom_choice_count = float("inf")
-        total_possible_responses = 0
-        total_actual_responses = 0
-        avg_completion_time = None
-        context["avg_completion_time"] = avg_completion_time
-
-        for question in self.object.question_set.all():
-            choices_data = []
-            question_total = 0
-
-            # Process each choice for this question
-            for choice in question.choice_set.all():
-                count = choice.response_set.count() if hasattr(choice, "response_set") else 0
-
-                question_total += count
-                choices_data.append({"text": choice.text, "count": count})
-
-            if question_total == 0:
-                continue
-            if question_total > 0:
-                total_possible_responses += total_participants * 1  # Each participant could answer this question
-                total_actual_responses += question_total
-
-            if question_total > max_responses:
-                max_responses = question_total
-                most_answered_question = question
-
-            for choice in choices_data:
-                choice["percentage"] = round((choice["count"] / question_total * 100), 1) if question_total > 0 else 0
-
-                if choice["count"] > overall_top_choice_count:
-                    overall_top_choice_count = choice["count"]
-                    top_choice = choice
-
-                if choice["count"] > 0 and choice["count"] < overall_bottom_choice_count:
-                    overall_bottom_choice_count = choice["count"]
-                    bottom_choice = choice
-
-            results.append({"question": question, "choices": choices_data, "total": question_total})
-
-            total_participants = max(total_participants, question_total)
-        engagement_score = 0
-        if total_possible_responses > 0:
-            engagement_score = (total_actual_responses / total_possible_responses) * 100
-
-        context["engagement_score"] = round(engagement_score, 1)
-        target_participants = getattr(self.object, "target_participants", 100)  # default to 100 if not set
-        response_rate = (total_participants / target_participants * 100) if target_participants > 0 else 0
-
-        context.update(
-            {
-                "results": results,
-                "total_participants": total_participants,
-                "response_rate": min(response_rate, 100),  # Cap at 100%
-                "most_answered_question": most_answered_question,
-                "top_choice": top_choice,
-                "bottom_choice": bottom_choice,
-                "is_creator": self.object.author == self.request.user if hasattr(self.object, "author") else False,
-            }
-        )
-
-        chart_data = []
-        for result in results:
-            chart_data.append(
-                {
-                    "question_id": result["question"].id,
-                    "labels": [choice["text"] for choice in result["choices"]],
-                    "data": [choice["count"] for choice in result["choices"]],
-                }
-            )
-        context["chart_data_json"] = json.dumps(chart_data)
-
-        return context
-
-
-class SurveyDeleteView(LoginRequiredMixin, DeleteView):
-    model = Survey
-    success_url = reverse_lazy("surveys")  # Use reverse_lazy
-    template_name = "surveys/delete.html"
-    login_url = "/accounts/login/"
-
-    def get_queryset(self):
-        # Override queryset to only allow creator to access the survey for deletion
-        base_qs = super().get_queryset()
-        return base_qs.filter(author=self.request.user)
-
-    def handle_no_permission(self):
-        messages.error(self.request, "You can only delete surveys that you created.")
-        return redirect("surveys")
-
-
-@login_required
-def join_session_waiting_room(request, course_slug):
-    """View for joining a session waiting room for the next session of a course."""
-    course = get_object_or_404(Course, slug=course_slug)
-
-    # Get or create the session waiting room for this course
-    session_waiting_room, created = WaitingRoom.objects.get_or_create(
-        course=course, status="open", defaults={"status": "open"}
-    )
-
-    # Check if the waiting room is open
-    if session_waiting_room.status != "open":
-        messages.error(request, "This session waiting room is no longer open for joining.")
-        return redirect("course_detail", slug=course_slug)
-
-    # Add the user to participants if not already in
-    if request.user not in session_waiting_room.participants.all():
-        session_waiting_room.participants.add(request.user)
-        next_session = session_waiting_room.get_next_session()
-        if next_session:
-            next_session_date = next_session.start_time.strftime("%B %d, %Y at %I:%M %p")
-            messages.success(
-                request,
-                f"You have joined the waiting room for the next session of {course.title}. "
-                f"Next session is on {next_session_date}.",
-            )
-        else:
-            messages.success(
-                request,
-                f"You have joined the waiting room for the next session of {course.title}. "
-                f"You'll be notified when a new session is scheduled.",
-            )
-        notify_teacher_waiting_room_join(session_waiting_room, request.user)
-    else:
-        messages.info(request, "You are already in the waiting room for the next session of this course.")
-
-    return redirect("course_detail", slug=course_slug)
-
-
-@login_required
-def leave_session_waiting_room(request, course_slug):
-    """View for leaving a session waiting room."""
-    course = get_object_or_404(Course, slug=course_slug)
-
-    try:
-        session_waiting_room = WaitingRoom.objects.get(course=course, status="open")
-    except WaitingRoom.DoesNotExist:
-        messages.info(request, "No session waiting room found for this course.")
-        return redirect("course_detail", slug=course_slug)
-
-    # Remove the user from participants
-    if request.user in session_waiting_room.participants.all():
-        session_waiting_room.participants.remove(request.user)
-        messages.success(request, f"You have left the session waiting room for {course.title}")
-    else:
-        messages.info(request, "You are not in the session waiting room for this course.")
-
-    return redirect("course_detail", slug=course_slug)
diff --git a/web/virtual_lab/__init__.py b/web/virtual_lab/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/web/virtual_lab/apps.py b/web/virtual_lab/apps.py
deleted file mode 100644
index fc003d2..0000000
--- a/web/virtual_lab/apps.py
+++ /dev/null
@@ -1,10 +0,0 @@
-"""Django AppConfig for the Virtual Lab application."""
-
-from django.apps import AppConfig
-
-
-class VirtualLabConfig(AppConfig):
-    """Configuration for the Virtual Lab Django application."""
-
-    default_auto_field = "django.db.models.BigAutoField"
-    name = "web.virtual_lab"
diff --git a/web/virtual_lab/css/virtual_lab.css b/web/virtual_lab/css/virtual_lab.css
deleted file mode 100644
index e69de29..0000000
diff --git a/web/virtual_lab/models.py b/web/virtual_lab/models.py
deleted file mode 100644
index e69de29..0000000
diff --git a/web/virtual_lab/static/virtual_lab/js/code_editor.js b/web/virtual_lab/static/virtual_lab/js/code_editor.js
deleted file mode 100644
index f531817..0000000
--- a/web/virtual_lab/static/virtual_lab/js/code_editor.js
+++ /dev/null
@@ -1,53 +0,0 @@
-// static/virtual_lab/js/code_editor.js
-
-// Simple CSRF helper
-function getCookie(name) {
-  const match = document.cookie.match(new RegExp(`(^| )${name}=([^;]+)`));
-  return match ? decodeURIComponent(match[2]) : null;
-}
-
-// Bootstrap Ace
-const editor = ace.edit("editor");
-editor.setTheme("ace/theme/github");
-editor.session.setMode("ace/mode/python");
-editor.setOptions({ fontSize: "14px", showPrintMargin: false });
-
-const runBtn   = document.getElementById("run-btn");
-const outputEl = document.getElementById("output");
-const stdinEl  = document.getElementById("stdin-input");
-const langSel  = document.getElementById("language-select");
-
-runBtn.addEventListener("click", () => {
-  const code     = editor.getValue();
-  const stdin    = stdinEl.value;
-  const language = langSel.value;
-
-  if (!code.trim()) {
-    outputEl.textContent = "🛑 Please type some code first.";
-    return;
-  }
-  outputEl.textContent = "Running…";
-  runBtn.disabled = true;
-
-  fetch(window.EVALUATE_CODE_URL, {
-    method: "POST",
-    headers: {
-      "Content-Type": "application/json",
-      "X-CSRFToken":  getCookie("csrftoken")
-    },
-    body: JSON.stringify({ code, language, stdin })
-  })
-  .then(res => res.json())
-  .then(data => {
-    let out = "";
-    if (data.stderr) out += `ERROR:\n${data.stderr}\n`;
-    if (data.stdout) out += data.stdout;
-    outputEl.textContent = out || "[no output]";
-  })
-  .catch(err => {
-    outputEl.textContent = `Request failed: ${err.message}`;
-  })
-  .finally(() => {
-    runBtn.disabled = false;
-  });
-});
diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/index.html b/web/virtual_lab/templates/virtual_lab/chemistry/index.html
deleted file mode 100644
index 8c09f72..0000000
--- a/web/virtual_lab/templates/virtual_lab/chemistry/index.html
+++ /dev/null
@@ -1,58 +0,0 @@
-{# templates/virtual_lab/chemistry/index.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-{% load i18n %}
-
-{% block virtual_lab_content %}
-  

-    

-      

-        
{% trans "Chemistry Experiments" %}

-        

-          {% trans "Explore these interactive chemistry simulations. Click on any card below to begin." %}
-        

-        

-          
-          
-            
{% trans "Acid-Base Titration" %}

-            

-              {% trans "Add titrant drop by drop and watch the color‐changing endpoint." %}
-            

-          
-          
-          
-            
{% trans "Reaction Rate" %}

-            

-              {% trans "See how concentration affects the speed of a reaction in real time." %}
-            

-          
-          
-          
-            
{% trans "Solubility & Saturation" %}

-            

-              {% trans "Dissolve solute until the solution reaches its saturation point." %}
-            

-          
-          
-          
-            
{% trans "Precipitation Reaction" %}

-            

-              {% trans "Mix two clear solutions to form and view a precipitate." %}
-            

-          
-          
-          
-            
{% trans "pH Indicator" %}

-            
{% trans "Adjust pH and watch the indicator change color." %}

-          
-        

-      

-    

-  

-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html b/web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html
deleted file mode 100644
index 458a40f..0000000
--- a/web/virtual_lab/templates/virtual_lab/chemistry/ph_indicator.html
+++ /dev/null
@@ -1,58 +0,0 @@
-{# templates/virtual_lab/chemistry/ph_indicator.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-{% load i18n %}
-
-{% block virtual_lab_content %}
-  

-    
{% trans "pH Indicator" %}

-    

-      
-      

-        
-        
-        
-        

-          {% trans "Enter a pH value (0–14) and click Update to see the color change." %}
-        

-        

-      

-      
-      

-        
-        
-        
-      

-    

-  

-{% endblock %}
-{% block extra_scripts %}
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html b/web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html
deleted file mode 100644
index aca5027..0000000
--- a/web/virtual_lab/templates/virtual_lab/chemistry/precipitation.html
+++ /dev/null
@@ -1,56 +0,0 @@
-{# templates/virtual_lab/chemistry/precipitation.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-{% load i18n %}
-
-{% block virtual_lab_content %}
-  

-    
{% trans "Precipitation Reaction" %}

-    

-      
-      

-        
-        
-        
-        

-          {% trans "Click Add Reagent to begin." %}
-        

-        

-      

-      
-      

-        
-        
-        
-        
-        
-        
-      

-    

-  

-{% endblock %}
-{% block extra_scripts %}
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html b/web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html
deleted file mode 100644
index 5154fd6..0000000
--- a/web/virtual_lab/templates/virtual_lab/chemistry/reaction_rate.html
+++ /dev/null
@@ -1,54 +0,0 @@
-{# templates/virtual_lab/chemistry/reaction_rate.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-{% load i18n %}
-
-{% block extra_head %}{# no extra CSS needed #}{% endblock %}
-{% block virtual_lab_content %}
-  

-    
{% trans "Reaction Rate" %}

-    

-      
-      

-        
-        
-        
-        

-          {% trans "Elapsed Time:" %}
-          0 {% trans "s" %}
-        

-        

-          {% trans "Set the concentration and start to see the reaction proceed..." %}
-        

-        

-          {# will display "Reaction Complete" at the end #}
-        

-      

-      
-      
-    

-  

-{% endblock %}
-{% block extra_scripts %}
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/solubility.html b/web/virtual_lab/templates/virtual_lab/chemistry/solubility.html
deleted file mode 100644
index b8fd25e..0000000
--- a/web/virtual_lab/templates/virtual_lab/chemistry/solubility.html
+++ /dev/null
@@ -1,53 +0,0 @@
-{# templates/virtual_lab/chemistry/solubility.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-{% load i18n %}
-
-{% block virtual_lab_content %}
-  

-    
{% trans "Solubility & Saturation" %}

-    

-      
-      

-        
-        
-        
-        

-          {% trans "Dissolved:" %}
-          0 g
-        

-        

-          {% trans "Solution is unsaturated. Add more solute to test saturation." %}
-        

-        

-          {# final property will appear here #}
-        

-      

-      
-      
-    

-  

-{% endblock %}
-{% block extra_scripts %}
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/chemistry/titration.html b/web/virtual_lab/templates/virtual_lab/chemistry/titration.html
deleted file mode 100644
index cda887c..0000000
--- a/web/virtual_lab/templates/virtual_lab/chemistry/titration.html
+++ /dev/null
@@ -1,78 +0,0 @@
-{# templates/virtual_lab/chemistry/titration.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-{% load i18n %}
-
-{% block extra_head %}{# no extra CSS needed #}{% endblock %}
-{% block virtual_lab_content %}
-  

-    
{% trans "Acid-Base Titration" %}

-    

-      
-      

-        
-        
-        
-        
-        
-        

-          {% trans "Titrant Added:" %}
-          0 mL
-        

-        

-          {% trans "Adjust the controls and start titration to see hints here..." %}
-        

-        

-          {# will display: “Solution is Acidic/Neutral/Basic” #}
-        

-      

-      
-      

-        
-        
-      

-    

-  

-{% endblock %}
-{% block extra_scripts %}
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html b/web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html
deleted file mode 100644
index 882355c..0000000
--- a/web/virtual_lab/templates/virtual_lab/code_editor/code_editor.html
+++ /dev/null
@@ -1,82 +0,0 @@
-{# templates/virtual_lab/code_editor/code_editor.html #}
-{% extends 'virtual_lab/layout.html' %}
-
-{% load static %}
-
-{% block title %}
-  Code Editor – Alpha Science Lab
-{% endblock title %}
-{% block extra_head %}
-  
-  
-  
-{% endblock extra_head %}
-{% block virtual_lab_content %}
-  

-    
Interactive Code Editor

-    
-    
print("Hello, world!")

-    
-    

-      
-      
-    

-    
-    

-      
-      
-    

-    
-    

-      
-    

-    
-    

-      
Output:

-      

-    

-  

-{% endblock virtual_lab_content %}
-{% block extra_scripts %}
-  
-  
-{% endblock extra_scripts %}
diff --git a/web/virtual_lab/templates/virtual_lab/home.html b/web/virtual_lab/templates/virtual_lab/home.html
deleted file mode 100644
index 159d14f..0000000
--- a/web/virtual_lab/templates/virtual_lab/home.html
+++ /dev/null
@@ -1,51 +0,0 @@
-{# web/virtual_lab/templates/virtual_lab/home.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-
-{% block virtual_lab_content %}
-  

-    

-      

-        
Welcome to the Alpha Science Lab

-        

-          Dive into interactive experiments and deepen your understanding of fundamental concepts. Click on any card below to begin.
-        

-        

-          
-          
-            
Pendulum Motion

-            
Visualize how length affects a pendulum's period.

-          
-          
-          
-            
Projectile Motion

-            
Launch a projectile and observe its real‐time trajectory.

-          
-          
-          
-            
Inclined Plane

-            
See a block slide down and discover acceleration on a ramp.

-          
-          
-          
-            
Mass–Spring Oscillation

-            
Set k and m, drag the mass, then watch it oscillate and view x(t).

-          
-          
-          
-            
Basic Electrical Circuit

-            

-              Build an RC circuit, adjust R, C, and V₀, and watch the capacitor charge in real time.
-            

-          
-        

-      

-    

-  

-{% endblock virtual_lab_content %}
diff --git a/web/virtual_lab/templates/virtual_lab/layout.html b/web/virtual_lab/templates/virtual_lab/layout.html
deleted file mode 100644
index efb38e5..0000000
--- a/web/virtual_lab/templates/virtual_lab/layout.html
+++ /dev/null
@@ -1,77 +0,0 @@
-{# web/virtual_lab/templates/virtual_lab/layout.html #}
-{% extends "base.html" %}
-
-{% load static %}
-{% load i18n %}
-
-{% block content %}
-  

-    
-    

-      

-        
-          Alpha Science Lab Logo
-          Alpha Science Lab
-        
-        
-      

-    

-    
-    

-      {% block virtual_lab_content %}
-      {% endblock virtual_lab_content %}
-    

-    
-    

-      

-        © {% now "Y" %} Alpha One Labs. All rights reserved.
-      

-    

-  

-  
-  
-  {% block extra_scripts %}
-  {% endblock extra_scripts %}
-{% endblock content %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/circuit.html b/web/virtual_lab/templates/virtual_lab/physics/circuit.html
deleted file mode 100644
index 4bf278a..0000000
--- a/web/virtual_lab/templates/virtual_lab/physics/circuit.html
+++ /dev/null
@@ -1,157 +0,0 @@
-{# web/virtual_lab/templates/virtual_lab/physics/circuit.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-
-{% block virtual_lab_content %}
-  

-    
-    

-      

-        

-          Step 1 of 4
-        

-        
    
-          
-        

-        

-          
-          
-          
-        

-      

-    

-    
-    

-      

-        

-          
Basic Electrical Circuit

-          

-            Build a simple RC circuit: a battery \(V_0\), a resistor \(R\), and a capacitor \(C\). Adjust \(V_0\), \(R\), and \(C\), then click “Start” to watch the capacitor charge. Observe real‐time \(V_C(t)\), \(I(t)\), and a live graph of capacitor voltage over time. After \(5\tau\), a quiz appears.
-          

-        

-        

-          
-          

-            
-            

-              

-                
-                
-                5.0 V
-              

-              

-                
-                
-                100 Ω
-              

-              

-                
-                
-                100 µF
-              

-              

-                
-                
-                
-              

-            

-            
-            

-              
-              
-              

-                

-                  Time: 0.00 s
-                

-                

-                  Voltage \(V_C\): 0.00 V
-                

-                

-                  Current \(I\): 0.00 A
-                

-                

-                  Time Constant \(\tau\): 0.01 s
-                

-              

-            

-            
-            
-          

-          
-          

-            
-            

-              
Capacitor Voltage vs Time

-              
-            

-            
-            

-              
Current vs Time

-              
-            

-          

-        

-      

-    

-  

-  
-  
-  
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/inclined.html b/web/virtual_lab/templates/virtual_lab/physics/inclined.html
deleted file mode 100644
index 719b840..0000000
--- a/web/virtual_lab/templates/virtual_lab/physics/inclined.html
+++ /dev/null
@@ -1,179 +0,0 @@
-{# web/virtual_lab/templates/virtual_lab/physics/inclined.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-
-{% block virtual_lab_content %}
-  

-    
-    

-      

-        

-          Step 1 of 4
-        

-        
    
-          
-        

-        

-          
-          
-          
-        

-      

-    

-    
-    

-      

-        

-          
Inclined Plane Dynamics

-          

-            Drag the block to any starting point, adjust angle, friction, and mass.
-            Click “Launch” to let it slide, watch live readouts, energy bars, force vectors, and a real-time graph.
-            Once it reaches the bottom, a short quiz will appear.
-          

-        

-        

-          

-            

-              

-                
-                
-                30°
-              

-              

-                
-                
-                0.00
-              

-              

-                
-                
-                1.0 kg
-              

-              

-                
-                
-                
-              

-            

-            
-            

-              
-              
-              

-                

-                  Distance ↓: 0.00 m
-                

-                

-                  Speed: 0.00 m/s
-                

-                

-                  Accel: 0.00 m/s²
-                

-                

-                  PE: 0.00 J
-                

-                

-                  KE: 0.00 J
-                

-              

-            

-            
-            

-              

-                

-                mg sin α
-              

-              

-                

-                Normal (mg cos α)
-              

-              

-                

-                Friction (μ mg cos α)
-              

-            

-          

-          
-          

-            
-            

-              
Position vs Time

-              
-            

-            
-            

-              

-                
Potential Energy

-                

-                  
-                

-              

-              

-                
Kinetic Energy

-                

-                  
-                

-              

-            

-            
-            
-          

-        

-      

-    

-  

-  
-  
-  
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/mass_spring.html b/web/virtual_lab/templates/virtual_lab/physics/mass_spring.html
deleted file mode 100644
index b541b16..0000000
--- a/web/virtual_lab/templates/virtual_lab/physics/mass_spring.html
+++ /dev/null
@@ -1,178 +0,0 @@
-{# web/virtual_lab/templates/virtual_lab/physics/mass_spring.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-
-{% block virtual_lab_content %}
-  

-    
-    

-      

-        

-          Step 1 of 4
-        

-        
    
-          
-        

-        

-          
-          
-          
-        

-      

-    

-    
-    

-      

-        

-          
Mass–Spring Oscillation

-          

-            Drag the mass horizontally to set its initial displacement. Adjust the spring constant \(k\) and mass \(m\).
-            Click “Start” to see the mass oscillate. A live Position vs. Time graph and numeric readouts will update in real time.
-            After one full oscillation, a post-lab quiz will appear.
-          

-        

-        

-          
-          

-            
-            

-              

-                
-                
-                25
-              

-              

-                
-                
-                1.0 kg
-              

-              

-                
-                
-                0.20 m
-              

-              

-                
-                
-                
-              

-            

-            
-            

-              
-              
-              

-                

-                  Time: 0.00 s
-                

-                

-                  Position: 0.00 m
-                

-                

-                  Velocity: 0.00 m/s
-                

-                

-                  Acceleration: 0.00 m/s²
-                

-                

-                  Potential (½kx²): 0.00 J
-                

-                

-                  Kinetic (½mv²): 0.00 J
-                

-              

-            

-            
-            
-          

-          
-          

-            
-            

-              
Position vs Time

-              
-            

-            
-            

-              

-                
Potential Energy

-                

-                  
-                

-              

-              

-                
Kinetic Energy

-                

-                  
-                

-              

-            

-          

-        

-      

-    

-  

-  
-  
-  
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/pendulum.html b/web/virtual_lab/templates/virtual_lab/physics/pendulum.html
deleted file mode 100644
index e9a4f6a..0000000
--- a/web/virtual_lab/templates/virtual_lab/physics/pendulum.html
+++ /dev/null
@@ -1,127 +0,0 @@
-{# web/virtual_lab/templates/virtual_lab/physics/pendulum.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-
-{% block virtual_lab_content %}
-  

-    {# ---------------- Tutorial Overlay (unchanged) ---------------- #}
-    

-      

-        

-          Step 1 of 5
-        

-        
    
-          {# Animated bullet points inserted by JS #}
-        

-        

-          
-          
-          
-        

-      

-    

-    {# -------------- End Tutorial Overlay -------------- #}
-    

-      

-        
-        

-          
Pendulum Motion

-          

-            Follow the animated tutorial above, then start the simulation. Watch the pendulum swing and see its trail. Numerical readouts appear at top‐left.
-          

-        

-        {# -------- Pendulum area with trail, mini-graph, and readouts -------- #}
-        

-          
-          
-          {# Numerical Readouts in top-left corner #}
-          

-            

-              t = 0.00 s
-            

-            

-              θ = 0.0°
-            

-            

-              v = 0.0 m/s
-            

-          

-          {# Small graph overlaid in top-right #}
-          

-            
θ vs t

-            
-            
-          

-        

-        {# -------- End Pendulum area -------- #}
-        {# -------- Energy Bars -------- #}
-        

-          

-            
Potential Energy

-            

-              

-            

-          

-          

-            
Kinetic Energy

-            

-              

-            

-          

-        

-        {# -------- End Energy Bars -------- #}
-        
-        

-          

-            
-            
-            1.0 m
-          

-          
-          
-        

-        
-        
-      

-    

-  

-  {# Include the updated JS with audio references removed #}
-  
-{% endblock %}
diff --git a/web/virtual_lab/templates/virtual_lab/physics/projectile.html b/web/virtual_lab/templates/virtual_lab/physics/projectile.html
deleted file mode 100644
index af9e51d..0000000
--- a/web/virtual_lab/templates/virtual_lab/physics/projectile.html
+++ /dev/null
@@ -1,158 +0,0 @@
-{# web/virtual_lab/templates/virtual_lab/physics/projectile.html #}
-{% extends "virtual_lab/layout.html" %}
-
-{% load static %}
-
-{% block virtual_lab_content %}
-  

-    {# ---------------- Pre-Lab Tutorial Overlay ---------------- #}
-    

-      

-        

-          Step 1 of 5
-        

-        
    
-          {# JS will inject bullet points here with fade-in #}
-        

-        

-          
-          
-          
-        

-      

-    

-    {# -------------- End Tutorial Overlay -------------- #}
-    

-      

-        
-        

-          
Projectile Motion

-          

-            Click‐and‐drag from the launch pad (white circle) at left to set speed and angle.
-            

-            Release to fire. Adjust gravity or wind on the fly.
-            Watch the path and vectors, and see “y vs x” plotted live.
-          

-        

-        {# -------- Main Simulation Area: Canvas + Plot -------- #}
-        

-          {# ---------------- Projectile Canvas ---------------- #}
-          

-            
-            
-            {# Launch Pad Icon (white circle)—drawn via JS, but reserve a tooltip #}
-            

-              
-              Launch Pad
-            

-            {# Numeric Readouts (top-left) #}
-            

-              

-                t = 0.00 s
-              

-              

-                x = 0.00 m
-              

-              

-                y = 0.00 m
-              

-              

-                vₓ = 0.00 m/s
-              

-              

-                v_y = 0.00 m/s
-              

-            

-            {# Target Indicator (blue vertical marker), drawn by JS #}
-          

-          {# ---------------- Live Plot: y vs x ---------------- #}
-          

-            
Trajectory: y vs x

-            
-            
-          

-        

-        {# -------- End Simulation + Plot -------- #}
-        {# -------- Mid-Flight “What-If” Controls -------- #}
-        

-          
Mid-Flight Controls:

-          

-            

-              
-              
-            

-            

-              
-              
-            

-            

-              
-              

-            

-          

-        

-        {# -------- End Mid-Flight Controls -------- #}
-        {# -------- Post-Lab Quiz / Target Info (hidden initially) -------- #}
-        
-        {# -------- End Quiz -------- #}
-      

-    

-  

-  {# Include the JavaScript for all new features #}
-  
-{% endblock %}
diff --git a/web/virtual_lab/tests.py b/web/virtual_lab/tests.py
deleted file mode 100644
index e69de29..0000000
diff --git a/web/virtual_lab/urls.py b/web/virtual_lab/urls.py
deleted file mode 100644
index bd8b671..0000000
--- a/web/virtual_lab/urls.py
+++ /dev/null
@@ -1,37 +0,0 @@
-from django.urls import path
-
-from .views import (
-    chemistry_home,
-    code_editor_view,
-    evaluate_code,
-    ph_indicator_view,
-    physics_electrical_circuit_view,
-    physics_inclined_view,
-    physics_mass_spring_view,
-    physics_pendulum_view,
-    physics_projectile_view,
-    precipitation_view,
-    reaction_rate_view,
-    solubility_view,
-    titration_view,
-    virtual_lab_home,
-)
-
-app_name = "virtual_lab"
-
-urlpatterns = [
-    path("", virtual_lab_home, name="virtual_lab_home"),
-    path("physics/pendulum/", physics_pendulum_view, name="physics_pendulum"),
-    path("physics/projectile/", physics_projectile_view, name="physics_projectile"),
-    path("physics/inclined/", physics_inclined_view, name="physics_inclined"),
-    path("physics/mass_spring/", physics_mass_spring_view, name="physics_mass_spring"),
-    path("physics/circuit/", physics_electrical_circuit_view, name="physics_electrical_circuit"),
-    path("virtual_lab/chemistry/", chemistry_home, name="chemistry_home"),
-    path("virtual_lab/chemistry/titration/", titration_view, name="titration"),
-    path("virtual_lab/chemistry/reaction-rate/", reaction_rate_view, name="reaction_rate"),
-    path("virtual_lab/chemistry/solubility/", solubility_view, name="solubility"),
-    path("virtual_lab/chemistry/precipitation/", precipitation_view, name="precipitation"),
-    path("virtual_lab/chemistry/ph-indicator/", ph_indicator_view, name="ph_indicator"),
-    path("code-editor/", code_editor_view, name="code_editor"),
-    path("evaluate-code/", evaluate_code, name="evaluate_code"),
-]
diff --git a/web/virtual_lab/views.py b/web/virtual_lab/views.py
deleted file mode 100644
index cee652a..0000000
--- a/web/virtual_lab/views.py
+++ /dev/null
@@ -1,136 +0,0 @@
-# web/virtual_lab/views.py
-
-import json
-import logging
-
-import requests
-from django.http import JsonResponse
-from django.shortcuts import render
-from django.views.decorators.http import require_POST
-
-logger = logging.getLogger(__name__)
-
-
-def virtual_lab_home(request):
-    """
-    Renders the Virtual Lab home page (home.html).
-    """
-    return render(request, "virtual_lab/home.html")
-
-
-def physics_pendulum_view(request):
-    """
-    Renders the Pendulum Motion simulation page (physics/pendulum.html).
-    """
-    return render(request, "virtual_lab/physics/pendulum.html")
-
-
-def physics_projectile_view(request):
-    """
-    Renders the Projectile Motion simulation page (physics/projectile.html).
-    """
-    return render(request, "virtual_lab/physics/projectile.html")
-
-
-def physics_inclined_view(request):
-    """
-    Renders the Inclined Plane simulation page (physics/inclined.html).
-    """
-    return render(request, "virtual_lab/physics/inclined.html")
-
-
-def physics_mass_spring_view(request):
-    """
-    Renders the Mass-Spring Oscillation simulation page (physics/mass_spring.html).
-    """
-    return render(request, "virtual_lab/physics/mass_spring.html")
-
-
-def physics_electrical_circuit_view(request):
-    """
-    Renders the Electrical Circuit simulation page (physics/circuit.html).
-    """
-    return render(request, "virtual_lab/physics/circuit.html")
-
-
-def chemistry_home(request):
-    return render(request, "virtual_lab/chemistry/index.html")
-
-
-def titration_view(request):
-    return render(request, "virtual_lab/chemistry/titration.html")
-
-
-def reaction_rate_view(request):
-    return render(request, "virtual_lab/chemistry/reaction_rate.html")
-
-
-def solubility_view(request):
-    return render(request, "virtual_lab/chemistry/solubility.html")
-
-
-def precipitation_view(request):
-    return render(request, "virtual_lab/chemistry/precipitation.html")
-
-
-def ph_indicator_view(request):
-    return render(request, "virtual_lab/chemistry/ph_indicator.html")
-
-
-# Piston’s public execute endpoint (rate-limited to 5 req/s) :contentReference[oaicite:0]{index=0}
-PISTON_EXECUTE_URL = "https://emkc.org/api/v2/piston/execute"
-
-LANG_FILE_EXT = {
-    "python": "py",
-    "javascript": "js",
-    "c": "c",
-    "cpp": "cpp",
-}
-
-
-def code_editor_view(request):
-    return render(request, "virtual_lab/code_editor/code_editor.html")
-
-
-@require_POST
-def evaluate_code(request):
-    """
-    Proxy code + stdin to Piston and return its JSON result.
-    """
-    data = json.loads(request.body)
-    source_code = data.get("code", "")
-    language = data.get("language", "python")  # e.g. "python","javascript","c","cpp"
-    stdin_text = data.get("stdin", "")
-
-    # Package content for Piston
-    ext = LANG_FILE_EXT.get(language, "txt")
-    files = [{"name": f"main.{ext}", "content": source_code}]
-    payload = {
-        "language": language,
-        "version": "*",  # semver selector; '*' picks latest :contentReference[oaicite:1]{index=1}
-        "files": files,
-        "stdin": stdin_text,
-        "args": [],
-    }
-
-    try:
-        resp = requests.post(PISTON_EXECUTE_URL, json=payload, timeout=10)
-        resp.raise_for_status()
-    except requests.RequestException:
-        # Log the full details for your own troubleshooting
-        logger.exception("Failed to call Piston execute endpoint")
-        # Return a safe, generic message to the user
-        return JsonResponse(
-            {"stderr": "Code execution service is currently unavailable. Please try again later."}, status=502
-        )
-
-    result = resp.json()
-    # Piston returns a structure like:
-    # { language, version, run: { stdout, stderr, code, signal, output } }
-    run = result.get("run", {})
-    return JsonResponse(
-        {
-            "stdout": run.get("stdout", run.get("output", "")),
-            "stderr": run.get("stderr", ""),
-        }
-    )
diff --git a/web/wsgi.py b/web/wsgi.py
deleted file mode 100644
index edfa214..0000000
--- a/web/wsgi.py
+++ /dev/null
@@ -1,5 +0,0 @@
-import os
-from django.core.wsgi import get_wsgi_application
-
-os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'web.settings')
-application = get_wsgi_application()