package router

import (
	"net/http"
	"time"

	"gotest/internal/config"
	"gotest/internal/database"
	"gotest/internal/handler"
	"gotest/internal/middleware"

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

// Setup 初始化路由和中间件，返回 Gin 引擎
func Setup(
	cfg *config.Config,
	db *database.DB,
	authH *handler.AuthHandler,
	userH *handler.UserHandler,
	adminH *handler.AdminHandler,
	uploadH *handler.UploadHandler,
	enterpriseH *handler.EnterpriseHandler,
	shopH *handler.ShopHandler,
	foodH *handler.FoodHandler,
	gameH *handler.GameHandler,
	appH *handler.AppHandler,
	musicH *handler.MusicHandler,
	dashboardH *handler.DashboardHandler,
) *gin.Engine {
	if cfg.Env.Name == "prod" {
		gin.SetMode(gin.ReleaseMode)
	}

	r := gin.New()

	// 全局中间件链（顺序：RequestID → Recover → Logger → CORS → RateLimit）
	r.Use(middleware.RequestID())
	r.Use(middleware.Recover())
	r.Use(middleware.Logger())
	r.Use(middleware.CORS(&cfg.CORS))
	r.Use(middleware.RateLimit(&cfg.RateLimit))

	// 健康检查（含数据库就绪探针）
	r.GET("/api/health", func(c *gin.Context) {
		dbStatus := "up"
		if err := db.HealthCheck(); err != nil {
			dbStatus = "down: " + err.Error()
		}
		status := http.StatusOK
		if dbStatus != "up" {
			status = http.StatusServiceUnavailable
		}
		c.JSON(status, gin.H{
			"code":    0,
			"message": "ok",
			"data": gin.H{
				"status":   dbStatus,
				"time":     time.Now().Format(time.RFC3339),
				"env":      cfg.Env.Name,
				"database": cfg.Database.Driver,
			},
		})
	})

	// API v1 路由组
	api := r.Group("/api/v1")
	{
		// 认证（公开）
		auth := api.Group("/auth")
		{
			auth.POST("/login", authH.Login)
		}

		// 管理员检查与初始化（公开）
		adminPub := api.Group("/admin")
		{
			adminPub.GET("/check", adminH.CheckAdmin)
			adminPub.POST("/init", adminH.InitAdmin)
		}

		// 企业数据 API（公开，3 套企业官网共用）
		enterprise := api.Group("/enterprise")
		{
			enterprise.GET("/all", enterpriseH.GetAllData)
			enterprise.GET("/company", enterpriseH.GetCompany)
			enterprise.GET("/services", enterpriseH.ListServices)
			enterprise.GET("/news", enterpriseH.ListNews)
			enterprise.GET("/news/:id", enterpriseH.GetNews)
			enterprise.GET("/team", enterpriseH.ListTeam)
		}

		// 电商数据 API（公开，跨境电商网站使用）
		shop := api.Group("/shop")
		{
			shop.GET("/home", shopH.GetHomeData)
			shop.GET("/categories", shopH.ListCategories)
			shop.GET("/products", shopH.ListProducts)
			shop.GET("/products/:id", shopH.GetProduct)
			shop.GET("/featured", shopH.ListFeatured)
		}

		// 外卖数据 API（公开，3 套外卖网站共用）
		food := api.Group("/food")
		{
			food.GET("/home", foodH.GetHomeData)
			food.GET("/categories", foodH.ListCategories)
			food.GET("/restaurants", foodH.ListRestaurants)
			food.GET("/restaurants/:id", foodH.GetRestaurant)
			food.GET("/restaurants/:id/menu", foodH.GetRestaurantMenu)
			food.GET("/featured", foodH.ListFeatured)
		}

		// 游戏数据 API（公开，3 套游戏网站共用）
		game := api.Group("/game")
		{
			game.GET("/home", gameH.GetHomeData)
			game.GET("/categories", gameH.ListCategories)
			game.GET("/games", gameH.ListGames)
			game.GET("/games/:id", gameH.GetGame)
			game.GET("/hot", gameH.ListHot)
			game.GET("/new", gameH.ListNew)
		}

		// 应用数据 API（公开，3 套应用网站共用）
		app := api.Group("/app")
		{
			app.GET("/home", appH.GetHomeData)
			app.GET("/categories", appH.ListCategories)
			app.GET("/apps", appH.ListApps)
			app.GET("/apps/:id", appH.GetApp)
			app.GET("/featured", appH.ListFeatured)
			app.GET("/new", appH.ListNew)
		}

		// 音乐数据 API（公开，3 套音乐网站共用）
		music := api.Group("/music")
		{
			music.GET("/home", musicH.GetHomeData)
			music.GET("/categories", musicH.ListCategories)
			music.GET("/songs", musicH.ListSongs)
			music.GET("/songs/:id", musicH.GetSong)
			music.GET("/hot", musicH.ListHot)
			music.GET("/new", musicH.ListNew)
		}

		// 需要登录的路由
		authed := api.Group("")
		authed.Use(middleware.JWTAuth(cfg.JWT.Secret))
		{
			// 用户资料
			user := authed.Group("/user")
			{
				user.GET("/profile", userH.GetProfile)
				user.PUT("/profile", userH.UpdateProfile)
				user.PUT("/password", userH.ChangePassword)
			}
			// 文件上传
			authed.POST("/upload", uploadH.Upload)
		}

		// 管理端路由（需要登录 + admin 角色）
		admin := api.Group("/admin")
		admin.Use(middleware.JWTAuth(cfg.JWT.Secret), requireAdmin())
		{
			admin.GET("/users", userH.ListUsers)
			admin.POST("/users", userH.CreateUser)
			admin.PUT("/users/:id", userH.UpdateUser)
			admin.DELETE("/users/:id", userH.DeleteUser)

			// 仪表盘 & 内容管理（通用 CRUD）
			admin.GET("/dashboard/stats", dashboardH.GetStats)
			admin.GET("/dashboard/:table", dashboardH.ListItems)
			admin.POST("/dashboard/:table", dashboardH.CreateItem)
			admin.PUT("/dashboard/:table/:id", dashboardH.UpdateItem)
			admin.DELETE("/dashboard/:table/:id", dashboardH.DeleteItem)
		}
	}

	return r
}

// requireAdmin 管理员权限校验中间件
func requireAdmin() gin.HandlerFunc {
	return func(c *gin.Context) {
		if middleware.GetRole(c) != "admin" {
			c.AbortWithStatusJSON(http.StatusForbidden, gin.H{
				"code": 1, "message": "权限不足", "data": nil,
			})
			return
		}
		c.Next()
	}
}