package main

import (
	"context"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"attune-heart-therapy/internal/config"
	"attune-heart-therapy/internal/server"

	"github.com/joho/godotenv"
)

func main() {
	// Load environment variables
	if err := godotenv.Load(); err != nil {
		log.Println("No .env file found, using system environment variables")
	}

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

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

	// Setup graceful shutdown
	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)

	// Start server in a goroutine
	go func() {
		if err := srv.Start(); err != nil && err != http.ErrServerClosed {
			log.Fatalf("Failed to start server: %v", err)
		}
	}()

	log.Println("Server started successfully")

	// Wait for interrupt signal
	<-quit
	log.Println("Shutting down server...")

	// Create a deadline for shutdown
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	// Shutdown server gracefully
	if err := srv.Shutdown(); err != nil {
		log.Printf("Error during server shutdown: %v", err)
	}

	// Wait for context deadline or completion
	<-ctx.Done()
	log.Println("Server shutdown completed")
}