package main

import (
	"context"
	"log"
	"os"
	"os/signal"
	"syscall"

	"go-grpc-gateway-template/internal/config"
	"go-grpc-gateway-template/internal/server"
)

func main() {
	// Load configuration
	cfg := config.Load()
	if err := cfg.Validate(); err != nil {
		log.Fatalf("Invalid configuration: %v", err)
	}

	// Create server
	srv := server.New(cfg)

	// Setup graceful shutdown
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	// Handle signals
	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		<-sigChan
		log.Println("Received shutdown signal")
		cancel()
	}()

	// Start server
	if err := srv.Start(ctx); err != nil {
		log.Printf("Server error: %v", err)
	}

	// Shutdown server
	if err := srv.Shutdown(context.Background()); err != nil {
		log.Printf("Shutdown error: %v", err)
	}
}