package main

import (
	"fmt"
	"log"
	"os"
	"os/signal"
	"syscall"
	"context"
	"net/http"
	"time"
	
	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
	
	"photography-backend/internal/config"
	"photography-backend/internal/repository/postgres"
	"photography-backend/internal/service/auth"
	"photography-backend/internal/api/handlers"
	"photography-backend/internal/api/middleware"
	"photography-backend/internal/api/routes"
	"photography-backend/pkg/logger"
)

func main() {
	// 加载配置
	cfg, err := config.LoadConfig("configs/config.yaml")
	if err != nil {
		log.Fatalf("Failed to load config: %v", err)
	}
	
	// 初始化日志
	zapLogger, err := logger.InitLogger(&cfg.Logger)
	if err != nil {
		log.Fatalf("Failed to initialize logger: %v", err)
	}
	defer zapLogger.Sync()
	
	// 初始化数据库
	db, err := postgres.NewDatabase(&cfg.Database)
	if err != nil {
		zapLogger.Fatal("Failed to connect to database", zap.Error(err))
	}
	defer db.Close()
	
	// 自动迁移数据库
	if err := db.AutoMigrate(); err != nil {
		zapLogger.Fatal("Failed to migrate database", zap.Error(err))
	}
	
	// 初始化仓库
	userRepo := postgres.NewUserRepository(db.DB)
	photoRepo := postgres.NewPhotoRepository(db.DB)
	categoryRepo := postgres.NewCategoryRepository(db.DB)
	tagRepo := postgres.NewTagRepository(db.DB)
	
	// 初始化服务
	jwtService := auth.NewJWTService(&cfg.JWT)
	authService := auth.NewAuthService(userRepo, jwtService)
	
	// 初始化处理器
	authHandler := handlers.NewAuthHandler(authService)
	
	// 初始化中间件
	authMiddleware := middleware.NewAuthMiddleware(jwtService)
	
	// 设置Gin模式
	if cfg.IsProduction() {
		gin.SetMode(gin.ReleaseMode)
	}
	
	// 创建Gin引擎
	r := gin.New()
	
	// 添加中间件
	r.Use(middleware.RequestIDMiddleware())
	r.Use(middleware.LoggerMiddleware(zapLogger))
	r.Use(middleware.CORSMiddleware(&cfg.CORS))
	r.Use(gin.Recovery())
	
	// 健康检查
	r.GET("/health", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"status": "ok",
			"timestamp": time.Now().Unix(),
			"version": cfg.App.Version,
		})
	})
	
	// 设置路由
	routes.SetupRoutes(r, &routes.Handlers{
		Auth: authHandler,
	}, authMiddleware)
	
	// 创建HTTP服务器
	server := &http.Server{
		Addr:           cfg.GetServerAddr(),
		Handler:        r,
		ReadTimeout:    10 * time.Second,
		WriteTimeout:   10 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}
	
	// 启动服务器
	go func() {
		zapLogger.Info("Starting server", zap.String("addr", server.Addr))
		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			zapLogger.Fatal("Failed to start server", zap.Error(err))
		}
	}()
	
	// 等待中断信号
	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
	<-quit
	
	zapLogger.Info("Shutting down server...")
	
	// 优雅关闭
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()
	
	if err := server.Shutdown(ctx); err != nil {
		zapLogger.Fatal("Server forced to shutdown", zap.Error(err))
	}
	
	zapLogger.Info("Server exited")
}