120 lines
3.1 KiB
Go
120 lines
3.1 KiB
Go
package main
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import (
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"context"
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"fmt"
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"log/slog"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/go-chi/chi/v5"
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"github.com/go-chi/chi/v5/middleware"
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"github.com/go-chi/cors"
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"github.com/joho/godotenv"
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"github.com/yourname/deflated/internal/db"
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"github.com/yourname/deflated/internal/handlers"
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)
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func main() {
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// Load .env file if present (ignored in production)
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_ = godotenv.Load()
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// Structured logger — prints human-readable text locally, JSON in prod
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logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
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Level: slog.LevelDebug,
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}))
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slog.SetDefault(logger)
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// Connect to Postgres
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pool, err := db.Connect(os.Getenv("DATABASE_URL"))
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if err != nil {
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slog.Error("failed to connect to database", "error", err)
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os.Exit(1)
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}
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defer pool.Close()
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// Run migrations on startup
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if err := db.Migrate(pool); err != nil {
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slog.Error("failed to run migrations", "error", err)
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os.Exit(1)
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}
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// Wire up dependencies
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queries := db.New(pool)
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receiptHandler := handlers.NewReceiptHandler(queries)
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itemHandler := handlers.NewItemHandler(queries)
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// Build router
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r := chi.NewRouter()
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// Middleware stack (runs for every request, in order)
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r.Use(middleware.RequestID) // adds X-Request-ID header
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r.Use(middleware.RealIP) // reads X-Forwarded-For for real client IP
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r.Use(middleware.Logger) // logs method, path, status, duration
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r.Use(middleware.Recoverer) // catches panics, returns 500 instead of crashing
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r.Use(middleware.Compress(5)) // gzip responses
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r.Use(cors.Handler(cors.Options{
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AllowedOrigins: []string{"http://localhost:5173", os.Getenv("FRONTEND_URL")},
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AllowedMethods: []string{"GET", "POST", "OPTIONS"},
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AllowedHeaders: []string{"Accept", "Content-Type"},
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}))
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// Routes
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r.Get("/health", func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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fmt.Fprint(w, "ok")
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})
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r.Route("/api", func(r chi.Router) {
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r.Post("/receipts", receiptHandler.Submit)
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r.Get("/receipts/{id}", receiptHandler.Get)
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r.Get("/items", itemHandler.List)
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r.Get("/items/{name}/history", itemHandler.PriceHistory)
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r.Get("/items/top-movers", itemHandler.TopMovers)
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r.Get("/inflation/summary", itemHandler.InflationSummary)
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})
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// Server with graceful shutdown
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port := os.Getenv("PORT")
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if port == "" {
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port = "8080"
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}
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srv := &http.Server{
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Addr: ":" + port,
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Handler: r,
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ReadTimeout: 15 * time.Second,
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WriteTimeout: 30 * time.Second,
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IdleTimeout: 60 * time.Second,
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}
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// Start server in background goroutine
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go func() {
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slog.Info("server starting", "port", port)
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if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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slog.Error("server error", "error", err)
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os.Exit(1)
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}
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}()
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// Block until SIGINT or SIGTERM (Ctrl+C or `docker stop`)
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quit := make(chan os.Signal, 1)
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signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
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<-quit
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slog.Info("shutting down gracefully...")
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := srv.Shutdown(ctx); err != nil {
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slog.Error("forced shutdown", "error", err)
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}
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}
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