package main

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

	"pinepods/gpodder-api/config"
	"pinepods/gpodder-api/internal/api"
	"pinepods/gpodder-api/internal/db"

	"github.com/gin-gonic/gin"
	"github.com/joho/godotenv"
)

func main() {
	// Load environment variables from .env file if it exists
	_ = godotenv.Load()

	// Debug log environment variables
	fmt.Printf("Environment variables:\n")
	fmt.Printf("DB_TYPE: %s\n", os.Getenv("DB_TYPE"))
	fmt.Printf("DB_HOST: %s\n", os.Getenv("DB_HOST"))
	fmt.Printf("DB_PORT: %s\n", os.Getenv("DB_PORT"))
	fmt.Printf("DB_USER: %s\n", os.Getenv("DB_USER"))
	fmt.Printf("DB_NAME: %s\n", os.Getenv("DB_NAME"))
	fmt.Printf("DB_PASSWORD: [hidden]\n")

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

	fmt.Printf("Using database type: %s\n", cfg.Database.Type)

	// Initialize database - use Database type instead of PostgresDB
	var database *db.Database
	database, err = db.NewDatabase(cfg.Database)
	if err != nil {
		log.Fatalf("Failed to connect to database: %v", err)
	}
	defer database.Close()

	// Set Gin mode
	if cfg.Environment == "production" {
		gin.SetMode(gin.ReleaseMode)
	}

	// Initialize router
	router := gin.Default()

	// Setup middleware
	router.Use(gin.Recovery())
	router.Use(gin.Logger())

	// Add CORS middleware
	router.Use(func(c *gin.Context) {
		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
		c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
		c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE")
		if c.Request.Method == "OPTIONS" {
			c.AbortWithStatus(204)
			return
		}
		c.Next()
	})

	// Register API routes
	apiRoutes := router.Group("/api/2")
	api.RegisterRoutes(apiRoutes, database)

	// Register simple API routes (v1)
	simpleAPIRoutes := router.Group("")
	api.RegisterSimpleRoutes(simpleAPIRoutes, database)

	// Start server
	srv := &http.Server{
		Addr:    fmt.Sprintf(":%d", cfg.Server.Port),
		Handler: router,
	}

	// Graceful shutdown
	go func() {
		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...")

	// Set timeout for shutdown
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	if err := srv.Shutdown(ctx); err != nil {
		log.Fatalf("Server forced to shutdown: %v", err)
	}

	log.Println("Server exiting")
}