CUB-112: scaffold Go backend with Chi, pgx, health check

backend/cmd/server/main.go

@@ -0,0 +1,80 @@
+package main
+
+import (
+	"context"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/CubeCraft-Creations/Extrudex/backend/internal/config"
+	"github.com/CubeCraft-Creations/Extrudex/backend/internal/db"
+	"github.com/CubeCraft-Creations/Extrudex/backend/internal/router"
+)
+
+func main() {
+	// Setup structured logging
+	slog.SetDefault(slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+		Level: slog.LevelInfo,
+	})))
+
+	// Load configuration
+	cfg, err := config.Load()
+	if err != nil {
+		slog.Error("failed to load config", "error", err)
+		os.Exit(1)
+	}
+
+	slog.Info("config loaded", "port", cfg.Port, "cors_origin", cfg.CorsOrigin)
+
+	// Connect to database
+	dbPool, err := db.NewPool(cfg.DatabaseURL)
+	if err != nil {
+		slog.Error("failed to connect to database", "error", err)
+		os.Exit(1)
+	}
+	defer db.ClosePool(dbPool)
+
+	slog.Info("database connected")
+
+	// Create router
+	r := router.New(cfg, dbPool)
+
+	// Create HTTP server
+	server := &http.Server{
+		Addr:         ":" + cfg.Port,
+		Handler:      r,
+		ReadTimeout:  15 * time.Second,
+		WriteTimeout: 15 * time.Second,
+		IdleTimeout:  60 * time.Second,
+	}
+
+	// Start server in goroutine
+	go func() {
+		slog.Info("server starting", "addr", server.Addr)
+		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			slog.Error("server error", "error", err)
+			os.Exit(1)
+		}
+	}()
+
+	// Wait for shutdown signal
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+
+	slog.Info("server shutting down")
+
+	// Graceful shutdown
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	if err := server.Shutdown(ctx); err != nil {
+		slog.Error("server shutdown error", "error", err)
+	}
+
+	db.ClosePool(dbPool)
+	slog.Info("server stopped")
+}