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serverlesssamurai23 wants to merge 4 commits into main from jules_wip_11131133632734623866

README.md

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-    # AWS
-    CLF-C02: AWS Certified Cloud Practitioner
+    Technology Stack
+    Frontend
+    Framework: React (Next.js recommended for SSR)
+    Styling: Tailwind CSS
+    Backend
+    Framework/Language: Node.js with Express.js
+    Database: PostgreSQL
+    Other Key Decisions
+    Payment Gateway: [To be decided - e.g., Stripe, PayPal]
+    Deployment Platform: [To be decided - e.g., Vercel, Heroku, AWS]
+    Version Control: Git (already in use)

backend/src/config/db.js

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+    const { Pool } = require('pg');
+    const pool = new Pool({
+      user: process.env.DB_USER,
+      host: process.env.DB_HOST,
+      database: process.env.DB_DATABASE,
+      password: process.env.DB_PASSWORD,
+      port: process.env.DB_PORT,
+    });
+    pool.on('connect', () => {
+      console.log('Connected to the PostgreSQL database!');
+    });
+    pool.on('error', (err) => {
+      console.error('Unexpected error on idle client', err);
+      process.exit(-1);
+    });
+    module.exports = {
+      query: (text, params) => pool.query(text, params),
+      pool, // Export pool if direct access is needed
+    };

backend/src/config/index.js

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+    const dbConfig = require('./db');
+    module.exports = {
+        dbConfig
+    };

backend/src/controllers/authController.js

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+    const User = require('../models/User');
+    const jwt = require('jsonwebtoken');
+    // Basic input validation (can be expanded with a library like Joi)
+    const validateInput = (email, password) => {
+      if (!email || !password || password.length < 6) {
+        return 'Invalid input: Email is required and password must be at least 6 characters.';
+      }
+      if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
+        return 'Invalid input: Please provide a valid email address.';
+      }
+      return null; // No error
+    };
+    exports.register = async (req, res) => {
+      try {
+        const { email, password, firstName, lastName, phoneNumber } = req.body;
+        const validationError = validateInput(email, password);
+        if (validationError) {
+          return res.status(400).json({ message: validationError });
+        }
+        const existingUser = await User.findByEmail(email);
+        if (existingUser) {
+          return res.status(400).json({ message: 'User already exists with this email.' });
+        }
+        const newUser = await User.create(email, password, firstName, lastName, phoneNumber);
+        // Don't send password_hash back
+        const userResponse = { ...newUser };
+        delete userResponse.password_hash;
+        // Optionally, generate a JWT token upon registration
+        const token = jwt.sign({ id: newUser.id, email: newUser.email }, process.env.JWT_SECRET, {
+          expiresIn: process.env.JWT_EXPIRES_IN,
+        });
+        res.status(201).json({
+          message: 'User registered successfully',
+          user: userResponse,
+          token // Send token if auto-login after registration
+        });
+      } catch (error) {
+        console.error('Registration error:', error);
+        res.status(500).json({ message: 'Server error during registration.' });
+      }
+    };
+    exports.login = async (req, res) => {
+      try {
+        const { email, password } = req.body;
+        const validationError = validateInput(email, password);
+        if (validationError) {
+          // More generic message for login to avoid confirming if email exists or not
+          return res.status(400).json({ message: 'Invalid email or password.' });
+        }
+        const user = await User.findByEmail(email);
+        if (!user) {
+          return res.status(401).json({ message: 'Invalid email or password.' }); // Generic message
+        }
+        const isMatch = await User.comparePassword(password, user.password_hash);
+        if (!isMatch) {
+          return res.status(401).json({ message: 'Invalid email or password.' }); // Generic message
+        }
+        const token = jwt.sign({ id: user.id, email: user.email }, process.env.JWT_SECRET, {
+          expiresIn: process.env.JWT_EXPIRES_IN,
+        });
+        // Don't send password_hash back
+        const userResponse = { id: user.id, email: user.email, first_name: user.first_name, last_name: user.last_name };
+        res.status(200).json({
+          message: 'Login successful',
+          token,
+          user: userResponse
+        });
+      } catch (error) {
+        console.error('Login error:', error);
+        res.status(500).json({ message: 'Server error during login.' });
+      }
+    };

backend/src/controllers/categoryController.js

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+    const Category = require('../models/Category');
+    const Product = require('../models/Product'); // To fetch products by category
+    exports.getAllCategories = async (req, res) => {
+      try {
+        const categories = await Category.findAll();
+        res.json(categories);
+      } catch (error) {
+        console.error('Get all categories error:', error);
+        res.status(500).json({ message: 'Server error while fetching categories.' });
+      }
+    };
+    exports.getCategoryBySlug = async (req, res) => {
+      try {
+        const category = await Category.findBySlug(req.params.slug);
+        if (!category) {
+          return res.status(404).json({ message: 'Category not found.' });
+        }
+        res.json(category);
+      } catch (error) {
+        console.error(`Get category by slug ${req.params.slug} error:`, error);
+        res.status(500).json({ message: 'Server error while fetching category.' });
+      }
+    };
+    exports.getProductsByCategorySlug = async (req, res) => {
+      try {
+        const { slug } = req.params;
+        const { sortBy, order, limit = 10, page = 1 } = req.query;
+        const offset = (parseInt(page, 10) - 1) * parseInt(limit, 10);
+        const category = await Category.findBySlug(slug);
+        if (!category) {
+          return res.status(404).json({ message: 'Category not found.' });
+        }
+        const { products, total } = await Product.findAll({
+          category: slug, // Pass slug to findAll
+          sortBy,
+          order,
+          limit: parseInt(limit, 10),
+          offset
+        });
+        res.json({
+          category, // Send category details along with products
+          data: products,
+          pagination: {
+            totalItems: total,
+            totalPages: Math.ceil(total / limit),
+            currentPage: parseInt(page, 10),
+            pageSize: parseInt(limit, 10)
+          }
+        });
+      } catch (error) {
+        console.error(`Get products by category slug ${req.params.slug} error:`, error);
+        res.status(500).json({ message: 'Server error while fetching products for category.' });
+      }
+    };

backend/src/controllers/prescriptionController.js

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+    const Prescription = require('../models/Prescription');
+    // Basic validation for prescription data (can be significantly expanded)
+    const validatePrescriptionData = (data) => {
+      if (!data.patientName || !data.prescriptionDate || !data.sphereRight || !data.sphereLeft || !data.prescriptionType) {
+        return 'Missing required fields: patientName, prescriptionDate, sphereRight, sphereLeft, prescriptionType are mandatory.';
+      }
+      // Add more specific validations for sphere, cyl, axis formats, PD ranges, etc.
+      return null;
+    };
+    exports.createPrescription = async (req, res) => {
+      try {
+        const userId = req.user.id; // From protect middleware
+        const validationError = validatePrescriptionData(req.body);
+        if (validationError) {
+          return res.status(400).json({ message: validationError });
+        }
+        const prescription = await Prescription.create(userId, req.body);
+        res.status(201).json(prescription);
+      } catch (error) {
+        console.error('Create prescription error:', error);
+        res.status(500).json({ message: 'Server error while creating prescription.' });
+      }
+    };
+    exports.getPrescriptions = async (req, res) => {
+      try {
+        const userId = req.user.id;
+        const prescriptions = await Prescription.findByUserId(userId);
+        res.json(prescriptions);
+      } catch (error) {
+        console.error('Get prescriptions error:', error);
+        res.status(500).json({ message: 'Server error while fetching prescriptions.' });
+      }
+    };
+    exports.getPrescriptionById = async (req, res) => {
+      try {
+        const userId = req.user.id;
+        const { id } = req.params;
+        const prescription = await Prescription.findByIdAndUserId(id, userId);
+        if (!prescription) {
+          return res.status(404).json({ message: 'Prescription not found or not owned by user.' });
+        }
+        res.json(prescription);
+      } catch (error) {
+        console.error('Get prescription by ID error:', error);
+        res.status(500).json({ message: 'Server error while fetching prescription.' });
+      }
+    };
+    exports.updatePrescription = async (req, res) => {
+      try {
+        const userId = req.user.id;
+        const { id } = req.params;
+        // Optional: Validate data before sending to model
+        // const validationError = validatePrescriptionData(req.body);
+        // if (validationError) {
+        //   return res.status(400).json({ message: validationError });
+        // }
+        const updatedPrescription = await Prescription.update(id, userId, req.body);
+        if (!updatedPrescription) {
+          return res.status(404).json({ message: 'Prescription not found or not owned by user for update.' });
+        }
+        res.json(updatedPrescription);
+      } catch (error) {
+        console.error('Update prescription error:', error);
+        res.status(500).json({ message: 'Server error while updating prescription.' });
+      }
+    };
+    exports.deletePrescription = async (req, res) => {
+      try {
+        const userId = req.user.id;
+        const { id } = req.params;
+        const success = await Prescription.delete(id, userId);
+        if (!success) {
+          return res.status(404).json({ message: 'Prescription not found or not owned by user for deletion.' });
+        }
+        res.status(204).send(); // No content
+      } catch (error) {
+        console.error('Delete prescription error:', error);
+        res.status(500).json({ message: 'Server error while deleting prescription.' });
+      }
+    };

backend/src/controllers/productController.js

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+    const Product = require('../models/Product');
+    exports.getAllProducts = async (req, res) => {
+      try {
+        const { category, sortBy, order, limit = 10, page = 1 } = req.query;
+        const offset = (parseInt(page, 10) - 1) * parseInt(limit, 10);
+        const { products, total } = await Product.findAll({
+          category,
+          sortBy,
+          order,
+          limit: parseInt(limit, 10),
+          offset
+        });
+        res.json({
+          data: products,
+          pagination: {
+            totalItems: total,
+            totalPages: Math.ceil(total / limit),
+            currentPage: parseInt(page, 10),
+            pageSize: parseInt(limit, 10)
+          }
+        });
+      } catch (error) {
+        console.error('Get all products error:', error);
+        res.status(500).json({ message: 'Server error while fetching products.' });
+      }
+    };
+    exports.getProductById = async (req, res) => {
+      try {
+        const product = await Product.findById(req.params.id);
+        if (!product) {
+          return res.status(404).json({ message: 'Product not found.' });
+        }
+        res.json(product);
+      } catch (error) {
+        console.error(`Get product by ID ${req.params.id} error:`, error);
+        res.status(500).json({ message: 'Server error while fetching product.' });
+      }
+    };

backend/src/middleware/authMiddleware.js

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+    const jwt = require('jsonwebtoken');
+    const User = require('../models/User'); // To ensure user exists, optional
+    // Middleware to verify JWT and attach user to request
+    const protect = async (req, res, next) => {
+      let token;
+      if (req.headers.authorization && req.headers.authorization.startsWith('Bearer')) {
+        try {
+          // Get token from header
+          token = req.headers.authorization.split(' ')[1];
+          // Verify token
+          const decoded = jwt.verify(token, process.env.JWT_SECRET);
+          // Get user from the token's ID
+          // You might choose to just trust the decoded.id and not hit the DB here for performance,
+          // or hit the DB to ensure the user still exists and hasn't been disabled/deleted.
+          // For this example, we'll just use the decoded ID.
+          req.user = { id: decoded.id, email: decoded.email }; // Attach minimal user info
+          next();
+        } catch (error) {
+          console.error('Token verification failed:', error);
+          res.status(401).json({ message: 'Not authorized, token failed' });
+        }
+      }
+      if (!token) {
+        res.status(401).json({ message: 'Not authorized, no token' });
+      }
+    };
+    module.exports = { protect };

backend/src/models/Category.js

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+    const db = require('../config/db');
+    const Category = {
+      async findAll() {
+        const queryText = 'SELECT id, name, slug, description, parent_id FROM ProductCategories ORDER BY name ASC';
+        try {
+          const { rows } = await db.query(queryText);
+          return rows;
+        } catch (err) {
+          console.error('Error fetching all categories:', err);
+          throw err;
+        }
+      },
+      async findBySlug(slug) {
+        const queryText = 'SELECT id, name, slug, description, parent_id FROM ProductCategories WHERE slug = $1';
+        try {
+          const { rows } = await db.query(queryText, [slug]);
+          return rows[0];
+        } catch (err) {
+          console.error(`Error fetching category by slug ${slug}:`, err);
+          throw err;
+        }
+      }
+    };
+    module.exports = Category;

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