package main

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

	"github.com/joho/godotenv"
	"github.com/yourusername/markedit/internal/api"
	"github.com/yourusername/markedit/internal/auth"
	"github.com/yourusername/markedit/internal/database"
)

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

	// Get configuration
	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
	}

	dbPath := os.Getenv("DATABASE_PATH")
	if dbPath == "" {
		dbPath = "./data/markedit.db"
	}

	// Initialize database
	db, err := database.New(dbPath)
	if err != nil {
		log.Fatalf("Failed to initialize database: %v", err)
	}
	defer db.Close()

	// Run migrations
	if err := db.RunMigrations(); err != nil {
		log.Fatalf("Failed to run migrations: %v", err)
	}

	// Initialize authentication
	if err := auth.InitSessions(); err != nil {
		log.Fatalf("Failed to initialize sessions: %v", err)
	}

	if err := auth.SetupProviders(); err != nil {
		log.Fatalf("Failed to setup OAuth providers: %v", err)
	}

	// Create router
	router := api.NewRouter(db)

	// Create HTTP server
	srv := &http.Server{
		Addr:         ":" + port,
		Handler:      router,
		ReadTimeout:  15 * time.Second,
		WriteTimeout: 15 * time.Second,
		IdleTimeout:  60 * time.Second,
	}

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

	// Wait for interrupt signal
	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
	<-quit

	log.Println("Shutting down server...")

	// Graceful shutdown
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	if err := srv.Shutdown(ctx); err != nil {
		log.Fatalf("Server forced to shutdown: %v", err)
	}

	log.Println("Server exited")
}