144 lines
4.2 KiB
Go
144 lines
4.2 KiB
Go
package main
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import (
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"database/sql"
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"strconv"
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"github.com/gorilla/mux"
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_ "github.com/mattn/go-sqlite3"
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"github.com/rs/cors"
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)
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type Review struct {
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ID int `json:"id"`
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ProductID int `json:"product_id"`
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Username string `json:"username"`
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Rating int `json:"rating"`
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Comment string `json:"comment"`
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CreatedAt string `json:"createdAt"`
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}
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var db *sql.DB
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func main() {
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var err error
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db, err = sql.Open("sqlite3", "./reviews.db")
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if err != nil {
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log.Fatal("Ошибка открытия БД:", err)
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}
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createTable()
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r := mux.NewRouter()
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r.HandleFunc("/product/{product_id:[0-9]+}", getReviews).Methods("GET")
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r.HandleFunc("/product/{product_id:[0-9]+}", addReview).Methods("POST")
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corsHandler := cors.New(cors.Options{
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AllowedOrigins: []string{"http://localhost:3000"},
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AllowedMethods: []string{"GET", "POST"},
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AllowedHeaders: []string{"Content-Type", "Authorization"},
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AllowCredentials: true,
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}).Handler(r)
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log.Println("Server is running on port 8080...")
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if err := http.ListenAndServe(":8080", corsHandler); err != nil {
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log.Fatal("Ошибка запуска сервера:", err)
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}
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}
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func createTable() {
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_, err := db.Exec(`
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CREATE TABLE IF NOT EXISTS reviews (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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product_id INTEGER NOT NULL,
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username TEXT NOT NULL,
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rating INTEGER NOT NULL CHECK(rating >= 1 AND rating <= 5),
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comment TEXT NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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`)
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if err != nil {
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log.Fatal("Ошибка создания таблицы:", err)
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}
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}
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func getReviews(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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productID := vars["product_id"]
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rows, err := db.Query("SELECT id, product_id, username, rating, comment, created_at FROM reviews WHERE product_id = ?", productID)
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if err != nil {
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http.Error(w, "Ошибка при получении отзывов", http.StatusInternalServerError)
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log.Println("Ошибка при запросе отзывов:", err)
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return
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}
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defer rows.Close()
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var reviews []Review
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for rows.Next() {
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var review Review
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if err := rows.Scan(&review.ID, &review.ProductID, &review.Username, &review.Rating, &review.Comment, &review.CreatedAt); err != nil {
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http.Error(w, "Ошибка при обработке данных", http.StatusInternalServerError)
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log.Println("Ошибка при сканировании строк:", err)
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return
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}
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reviews = append(reviews, review)
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}
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// Log the reviews being returned
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log.Printf("Reviews fetched: %+v", reviews)
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if len(reviews) == 0 {
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http.Error(w, "Нет отзывов", http.StatusNotFound)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(reviews)
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}
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func addReview(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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productID, err := strconv.Atoi(vars["product_id"])
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if err != nil {
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http.Error(w, "Некорректный product_id", http.StatusBadRequest)
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log.Println("Ошибка преобразования product_id:", err)
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return
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}
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var review Review
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if err := json.NewDecoder(r.Body).Decode(&review); err != nil {
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http.Error(w, "Некорректный JSON", http.StatusBadRequest)
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log.Println("Ошибка декодирования JSON:", err)
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return
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}
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review.ProductID = productID
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log.Printf("Попытка добавить отзыв: %+v", review)
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stmt, err := db.Prepare("INSERT INTO reviews (product_id, username, rating, comment, created_at) VALUES (?, ?, ?, ?, datetime('now'))")
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if err != nil {
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http.Error(w, "Ошибка при подготовке SQL-запроса", http.StatusInternalServerError)
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log.Println("Ошибка при подготовке запроса:", err)
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return
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}
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defer stmt.Close()
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result, err := stmt.Exec(review.ProductID, review.Username, review.Rating, review.Comment)
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if err != nil {
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http.Error(w, "Ошибка при добавлении отзыва", http.StatusInternalServerError)
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log.Println("Ошибка при выполнении SQL-запроса:", err)
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return
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}
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rowsAffected, _ := result.RowsAffected()
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log.Println("Добавлено строк:", rowsAffected)
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w.WriteHeader(http.StatusCreated)
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fmt.Fprintln(w, "Отзыв успешно добавлен")
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}
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