package main

import (
	"SimpleTutorialHosting/internal/config"
	"SimpleTutorialHosting/internal/server"
	"SimpleTutorialHosting/internal/storage"
	"context"
	"log"
	"os"
	"os/signal"
	"syscall"
	"time"
)

func main() {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer shutdownCancel()

	cfg, err := config.Load(ctx)
	if err != nil {
		log.Fatalf("Failed to load config: %v\n", err)
	}

	store, err := storage.NewS3Client(ctx, cfg.BucketName)
	if err != nil {
		log.Fatalf("Failed to create S3 client: %v\n", err)
	}

	srv, err := server.New(cfg, store)
	if err != nil {
		log.Fatalf("Failed to create server: %v\n", err)
	}

	done := make(chan os.Signal, 1)
	signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		if err := srv.Start(); err != nil {
			log.Printf("Server error: %v\n", err)
			cancel()
		}
	}()

	log.Printf("Server started on port %d\n", cfg.Port)

	select {
	case sig := <-done:
		log.Printf("Received signal: %v\n", sig)
	case <-ctx.Done():
		log.Printf("Context cancelled: %v\n", ctx.Err())
	}

	log.Print("Shutting down server")

	if err := srv.Shutdown(shutdownCtx); err != nil {
		log.Printf("Error during shutdown: %v\n", err)
		os.Exit(1)
	}

	log.Print("Server exited properly")
}