package main

import (
	"go_blog/config"
	"go_blog/models"
	"go_blog/routers"
	"go_blog/utils"
	"log/slog"
	"os"
	"time"

	"gorm.io/gorm"

	"github.com/gin-contrib/sessions"
	"github.com/gin-contrib/sessions/cookie"
	"github.com/gin-gonic/gin"
)

// @title 个人博客系统
// @version 1.0
// @description 基于Go语言的可定制主题博客系统
func main() {
	// 1. 初始化配置
	conf, err := config.LoadConfig("config.yml")
	if err != nil {
		slog.Error("配置加载失败", "error", err)
		os.Exit(1)
	}
	slog.Info("配置加载成功", "config", conf)
	// 2. 初始化日志系统
	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
	slog.SetDefault(logger)
	slog.SetLogLoggerLevel(slog.LevelDebug)
	slog.Info("初始化日志系统成功", "Defaultlogger", logger, "LogLevel", slog.LevelDebug)

	// 3. 初始化数据库
	models.InitDatabase(conf)
	sqlDB, _ := models.DB.DB()
	defer func() {
		if err := sqlDB.Close(); err != nil {
			slog.Error("数据库关闭异常", "error", err)
		}
	}()
	// 4. 初始化主题系统
	themeManager := utils.NewManager("web\\themes")
	if err := themeManager.LoadTheme(conf.Theme.Current); err != nil {
		slog.Error("主题系统初始化失败", "error", err)
		os.Exit(1)
	}

	// 5. 创建Gin实例
	if conf.Env == config.EnvProduction {
		gin.SetMode(gin.ReleaseMode)
	}
	router := gin.New()
	router.Use(gin.Recovery())
	themeManager.RegisterStaticRoutes(router)

	// 初始化Session存储（使用Cookie）
	store := cookie.NewStore([]byte("your-session-secret"))
	store.Options(sessions.Options{
		Path:     "/",
		MaxAge:   86400 * 7, // 7天
		HttpOnly: true,
	})
	// 6. 注册中间件
	router.Use(
		loggerMiddleware(),
		databaseMiddleware(models.DB),
		configMiddleware(conf),
		themeMiddleware(themeManager),
		sessions.Sessions("blog-session", store),
	)

	// 8. 注册路由
	routers.RegisterRoutes(router)

	// 9. 启动服务
	router.Run(":" + conf.Server.Port)
}

// 数据库中间件
func databaseMiddleware(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Set("DB", db)
		c.Next()
	}
}

// 配置上下文中间件
func configMiddleware(cfg *config.Config) gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Set("Config", cfg)
		c.Next()
	}
}

// 主题管理器中间件
func themeMiddleware(manager *utils.ThemeManager) gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Set("ThemeManager", manager)
		c.Next()
	}
}

func loggerMiddleware() gin.HandlerFunc {
	return func(c *gin.Context) {
		start := time.Now()
		c.Next()
		duration := time.Since(start)
		slog.Info("请求处理完成",
			"status", c.Writer.Status(),
			"method", c.Request.Method,
			"path", c.Request.URL.Path,
			"duration", duration,
		)
	}
}