Final project#2

Dockerfile

@@ -0,0 +1,16 @@
+FROM golang:1.22.2 AS builder
+
+WORKDIR /app
+COPY . .
+
+RUN go build -o app
+
+FROM ubuntu:latest
+
+WORKDIR /app
+COPY --from=builder /app/app ./
+COPY --from=builder /app/web ./web
+
+EXPOSE 7540
+
+CMD ["/app/app"]

README.md

@@ -1,5 +1,35 @@
-# Файлы для итогового задания
+Проект предназначен для мониторинга, создания, редактирования и изменения статуса задач. Поддерживает правила повторения событий и хранит данные в SQLite.
 
-В директории `tests` находятся тесты для проверки API, которое должно быть реализовано в веб-сервере.
 
-Директория `web` содержит файлы фронтенда.
+# **Функциональность:**
+
+Создание и хранение задач в базе данных SQLite.
+
+Редактирование задач, включая изменение даты и повторяющихся правил.
+
+Рассчет следующей даты выполнения задачи на основе правил повторения.
+
+API для управления задачами.
+
+Интеграция с фронтендом (директория web).
+
+Тестирование API (директория tests).
+
+
+# **Структура проекта:**
+
+db.go – инициализация базы данных, проверка существования, создание пути и подключение к SQLite.
+
+nextdate.go – реализация логики повторяющихся задач, проверка даты на корректность и обработка високосных годов.
+
+tasks.go – обработчики API с проверкой входных данных.
+
+Dockerfile – описание сборки контейнера.
+
+go.mod / go.sum – управление зависимостями.
+
+main.go – стартовая точка проекта, запуск веб-сервера (порт 7540), инициализация БД, маршрутизация API.
+
+Команды для сборки
+docker build -t YourGoPlanner .
+docker run -d -p 7540:7540 -v ${PWD}/scheduler.db:/app/scheduler.db go_final_project

db.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"database/sql"
+	"log"
+	"os"
+
+	"path/filepath"
+
+	_ "modernc.org/sqlite"
+)
+
+func InitDB() (*sql.DB, error) {
+	appPath, err := os.Executable()
+	if err != nil {
+		log.Fatal(err)
+	}
+	dbFile := filepath.Join(filepath.Dir(appPath), "scheduler.db")
+
+	_, err = os.Stat(dbFile)
+	install := os.IsNotExist(err)
+	log.Println("Using database file:", dbFile)
+
+	db, err := sql.Open("sqlite", dbFile)
+	if err != nil {
+		return nil, err
+	}
+
+	if install {
+		err = createTables(db)
+		if err != nil {
+			return nil, err
+		}
+		log.Println("Database created")
+	}
+
+	return db, nil
+}
+
+func createTables(db *sql.DB) error {
+	query := `
+	CREATE TABLE IF NOT EXISTS scheduler (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		date TEXT NOT NULL,
+		title TEXT NOT NULL,
+		comment TEXT,
+		repeat TEXT CHECK(length(repeat) <= 128)
+	);
+	CREATE INDEX IF NOT EXISTS idx_date ON scheduler(date);
+	`
+	_, err := db.Exec(query)
+	return err
+}

go.mod

@@ -0,0 +1,25 @@
+module go_final_project
+
+go 1.22.2
+
+require (
+	github.com/jmoiron/sqlx v1.4.0
+	github.com/mattn/go-sqlite3 v1.14.24
+	github.com/stretchr/testify v1.10.0
+	modernc.org/sqlite v1.34.5
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	modernc.org/libc v1.55.3 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.8.0 // indirect
+)

go.sum

@@ -0,0 +1,64 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
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+github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
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main.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"time"
+
+	_ "modernc.org/sqlite"
+)
+
+const (
+	port    = ":7540"
+	webDir  = "./web"
+	dateFmt = "20060102"
+)
+
+func nextDateHandler(w http.ResponseWriter, r *http.Request) {
+	nowStr := r.URL.Query().Get("now")
+	dateStr := r.URL.Query().Get("date")
+	repeatStr := r.URL.Query().Get("repeat")
+
+	if nowStr == "" || dateStr == "" || repeatStr == "" {
+		http.Error(w, "Not all parameters passed", http.StatusBadRequest)
+		return
+	}
+
+	now, err := time.Parse(dateFmt, nowStr)
+	if err != nil {
+		http.Error(w, "Incorrect format now", http.StatusBadRequest)
+		return
+	}
+
+	next, err := NextDate(now, dateStr, repeatStr)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(next))
+}
+
+func main() {
+	db, err := InitDB()
+	if err != nil {
+		log.Fatal("Error creating database:", err)
+	}
+	defer db.Close()
+
+	http.Handle("/", http.FileServer(http.Dir(webDir)))
+
+	http.HandleFunc("/api/nextdate", nextDateHandler)
+	http.HandleFunc("/api/task", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == http.MethodPost {
+			handleCreateTask(w, r, db)
+		} else if r.Method == http.MethodGet {
+			if r.URL.Query().Has("id") {
+				handleGetTaskByID(w, r, db)
+			} else {
+				http.Error(w, `{"error":"Не указан ID задачи"}`, http.StatusBadRequest)
+			}
+		} else if r.Method == http.MethodPut {
+			handleUpdateTask(w, r, db)
+		} else if r.Method == http.MethodDelete {
+			handleDeleteTask(w, r, db)
+		} else {
+			http.Error(w, `{"error":"Метод не поддерживается"}`, http.StatusMethodNotAllowed)
+		}
+	})
+
+	http.HandleFunc("/api/tasks", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == http.MethodGet {
+			handleGetTasks(w, r, db)
+		} else {
+			http.Error(w, `{"error":"Метод не поддерживается"}`, http.StatusMethodNotAllowed)
+		}
+	})
+
+	http.HandleFunc("/api/task/done", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == http.MethodPost {
+			handleTaskDone(w, r, db)
+		} else {
+			http.Error(w, `{"error":"Метод не поддерживается"}`, http.StatusMethodNotAllowed)
+		}
+	})
+
+	log.Printf("Server running http://localhost%s\n", port)
+	err = http.ListenAndServe(port, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+}

nextdate.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"strconv"
+	"strings"
+	"time"
+)
+
+func NextDate(now time.Time, date string, repeat string) (string, error) {
+	startDate, err := time.Parse("20060102", date)
+	if err != nil || startDate.Year() < 1600 || startDate.Year() > 9999 {
+		return "", nil
+	}
+
+	parts := strings.Split(repeat, " ")
+	switch parts[0] {
+	case "y":
+		if len(parts) > 1 {
+			return "", nil
+		}
+		nextDate := startDate.AddDate(1, 0, 0)
+		for !nextDate.After(now) {
+			nextDate = nextDate.AddDate(1, 0, 0)
+		}
+		if startDate.Month() == time.February && startDate.Day() == 29 && !isLeapYear(nextDate.Year()) {
+			nextDate = time.Date(nextDate.Year(), time.March, 1, 0, 0, 0, 0, time.UTC)
+		}
+		return nextDate.Format("20060102"), nil
+
+	case "d":
+		if len(parts) < 2 {
+			return "", nil
+		}
+		days, err := strconv.Atoi(parts[1])
+		if err != nil || days <= 0 || days > 365 {
+			return "", nil
+		}
+		nextDate := startDate.AddDate(0, 0, days)
+		for !nextDate.After(now) {
+			nextDate = nextDate.AddDate(0, 0, days)
+		}
+		return nextDate.Format("20060102"), nil
+	}
+
+	return "", nil
+}
+
+func isLeapYear(year int) bool {
+	return (year%4 == 0 && year%100 != 0) || (year%400 == 0)
+}