package router

import (
	"hfb_sys/backend/internal/config"
	"hfb_sys/backend/internal/handler"
	"hfb_sys/backend/internal/middleware"
	"hfb_sys/backend/internal/modules/adminaudit"
	"hfb_sys/backend/internal/modules/adminauth"
	"hfb_sys/backend/internal/modules/admindashboard"
	"hfb_sys/backend/internal/modules/adminuser"
	"hfb_sys/backend/internal/modules/auth"
	"hfb_sys/backend/internal/modules/dispute"
	filemodule "hfb_sys/backend/internal/modules/file"
	"hfb_sys/backend/internal/modules/listing"
	"hfb_sys/backend/internal/modules/notification"
	"hfb_sys/backend/internal/modules/order"
	"hfb_sys/backend/internal/modules/realname"
	"hfb_sys/backend/internal/modules/systemconfig"
	"hfb_sys/backend/internal/modules/user"
	"hfb_sys/backend/internal/modules/wallet"

	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

func New(cfg config.Config, deps Dependencies, logger *zap.Logger) *gin.Engine {
	if cfg.AppEnv == "production" {
		gin.SetMode(gin.ReleaseMode)
	}

	engine := gin.New()
	engine.Use(gin.Recovery())
	engine.Use(middleware.RequestLogger(logger))

	health := handler.NewHealthHandler()
	engine.GET("/health", health.Check)

	jwtManager := auth.NewJWTManager(cfg.JWTSecret)
	var userRepo *auth.UserRepository
	if deps.DB != nil {
		userRepo = auth.NewUserRepository(deps.DB)
	}
	authService := auth.NewService(userRepo, deps.Redis, jwtManager, logger)
	authHandler := auth.NewHandler(authService)
	var adminAuthRepo *adminauth.Repository
	if deps.DB != nil {
		adminAuthRepo = adminauth.NewRepository(deps.DB, deps.Redis, jwtManager)
	}
	adminAuthService := adminauth.NewService(adminAuthRepo, jwtManager)
	adminAuthHandler := adminauth.NewHandler(adminAuthService)
	var adminDashboardRepo *admindashboard.Repository
	if deps.DB != nil {
		adminDashboardRepo = admindashboard.NewRepository(deps.DB)
	}
	adminDashboardService := admindashboard.NewService(adminDashboardRepo)
	adminDashboardHandler := admindashboard.NewHandler(adminDashboardService)
	var adminUserRepo *adminuser.Repository
	if deps.DB != nil {
		adminUserRepo = adminuser.NewRepository(deps.DB)
	}
	adminUserService := adminuser.NewService(adminUserRepo)
	adminUserHandler := adminuser.NewHandler(adminUserService)
	var adminAuditRepo *adminaudit.Repository
	if deps.DB != nil {
		adminAuditRepo = adminaudit.NewRepository(deps.DB)
	}
	adminAuditService := adminaudit.NewService(adminAuditRepo)
	adminAuditHandler := adminaudit.NewHandler(adminAuditService)
	userHandler := user.NewHandler(userRepo)
	var realnameRepo *realname.Repository
	if deps.DB != nil {
		realnameRepo = realname.NewRepository(deps.DB)
	}
	realnameService := realname.NewService(realnameRepo, realname.NewMockProvider())
	realnameHandler := realname.NewHandler(realnameService)
	var listingRepo *listing.Repository
	if deps.DB != nil {
		listingRepo = listing.NewRepository(deps.DB)
	}
	var orderRepo *order.Repository
	if deps.DB != nil {
		orderRepo = order.NewRepository(deps.DB)
	}
	orderService := order.NewService(orderRepo)
	orderHandler := order.NewHandler(orderService)
	var walletRepo *wallet.Repository
	if deps.DB != nil {
		walletRepo = wallet.NewRepository(deps.DB)
	}
	walletService := wallet.NewService(walletRepo)
	walletHandler := wallet.NewHandler(walletService)
	var notificationRepo *notification.Repository
	if deps.DB != nil {
		notificationRepo = notification.NewRepository(deps.DB)
	}
	notificationService := notification.NewService(notificationRepo)
	notificationHandler := notification.NewHandler(notificationService)
	var disputeRepo *dispute.Repository
	if deps.DB != nil {
		disputeRepo = dispute.NewRepository(deps.DB)
	}
	disputeService := dispute.NewService(disputeRepo)
	disputeHandler := dispute.NewHandler(disputeService)
	var systemConfigRepo *systemconfig.Repository
	if deps.DB != nil {
		systemConfigRepo = systemconfig.NewRepository(deps.DB)
	}
	systemConfigService := systemconfig.NewService(systemConfigRepo)
	systemConfigHandler := systemconfig.NewHandler(systemConfigService)
	var fileStorage *filemodule.Storage
	if cfg.Storage.Endpoint != "" && cfg.Storage.Bucket != "" {
		var err error
		fileStorage, err = filemodule.NewStorage(cfg.Storage)
		if err != nil {
			logger.Warn("file storage unavailable; file APIs will return 503", zap.Error(err))
		}
	}
	fileService := filemodule.NewService(fileStorage)
	fileHandler := filemodule.NewHandler(fileService, fileStorage)
	listingService := listing.NewService(listingRepo, systemConfigRepo)
	listingHandler := listing.NewHandler(listingService, fileStorage)
	requireAuth := middleware.Auth(jwtManager)
	requireAdmin := middleware.AdminAuth(jwtManager)
	requireRealname := middleware.RequireRealname(userRepo)

	api := engine.Group("/api")
	{
		api.GET("/health", health.Check)
		api.GET("/listing-publish-options", systemConfigHandler.PublishOptions)
		api.GET("/listing-sale-price-config", systemConfigHandler.SalePriceConfig)
		api.GET("/home-announcements", systemConfigHandler.HomeAnnouncements)
		api.GET("/mobile-home-config", systemConfigHandler.HomeConfig)
		api.GET("/public/files/object", fileHandler.PublicObject)

		authRoutes := api.Group("/auth")
		{
			authRoutes.POST("/sms/send", authHandler.SendSMS)
			authRoutes.POST("/sms/login", authHandler.Login)
			authRoutes.POST("/refresh", authHandler.Refresh)
			authRoutes.POST("/logout", authHandler.Logout)
		}

		api.GET("/me", requireAuth, userHandler.Me)
		api.PUT("/me", requireAuth, userHandler.UpdateMe)

		listingRoutes := api.Group("/listings")
		{
			listingRoutes.GET("", listingHandler.ListPublic)
			listingRoutes.GET("/:id/cover", listingHandler.Cover)
			listingRoutes.GET("/:id/screenshots/:index", listingHandler.Screenshot)
			listingRoutes.GET("/:id", listingHandler.FindPublic)
			listingRoutes.POST("", requireAuth, requireRealname, listingHandler.Create)
			listingRoutes.PUT("/:id", requireAuth, requireRealname, listingHandler.Update)
			listingRoutes.POST("/:id/submit-review", requireAuth, requireRealname, listingHandler.SubmitReview)
			listingRoutes.DELETE("/:id", requireAuth, requireRealname, listingHandler.Offline)
		}

		sellerRoutes := api.Group("/seller", requireAuth, requireRealname)
		{
			sellerRoutes.GET("/listings", listingHandler.ListMine)
			sellerRoutes.GET("/listings/:id", listingHandler.FindMine)
		}

		orderRoutes := api.Group("/orders", requireAuth)
		{
			orderRoutes.POST("", orderHandler.Create)
			orderRoutes.GET("", orderHandler.List)
			orderRoutes.GET("/:id", orderHandler.Detail)
			orderRoutes.POST("/:id/cancel", orderHandler.Cancel)
			orderRoutes.POST("/:id/handoff", orderHandler.SubmitHandoff)
			orderRoutes.GET("/:id/handoff-records", orderHandler.HandoffRecords)
			orderRoutes.POST("/:id/confirm-receive", orderHandler.ConfirmReceive)
			orderRoutes.POST("/:id/checkout", orderHandler.SubmitCheckout)
			orderRoutes.POST("/:id/checkout/confirm", orderHandler.ConfirmCheckout)
			orderRoutes.POST("/:id/checkout/counter", orderHandler.CounterCheckout)
			orderRoutes.POST("/:id/checkout/accept", orderHandler.AcceptCheckout)
			orderRoutes.POST("/:id/dispute", disputeHandler.Create)
		}

		disputeRoutes := api.Group("/disputes", requireAuth)
		{
			disputeRoutes.GET("", disputeHandler.List)
			disputeRoutes.GET("/:id", disputeHandler.Detail)
		}

		walletRoutes := api.Group("/wallet", requireAuth)
		{
			walletRoutes.GET("/balance", walletHandler.Balance)
			walletRoutes.GET("/ledger", walletHandler.Ledger)
		}

		fileRoutes := api.Group("/files", requireAuth)
		{
			fileRoutes.POST("/upload", fileHandler.Upload)
			fileRoutes.GET("/object", fileHandler.Object)
		}

		notificationRoutes := api.Group("/notifications", requireAuth)
		{
			notificationRoutes.GET("", notificationHandler.List)
			notificationRoutes.POST("/:id/read", notificationHandler.MarkRead)
		}

		realnameRoutes := api.Group("/realname", requireAuth)
		{
			realnameRoutes.POST("/start", realnameHandler.Start)
			realnameRoutes.GET("/status", realnameHandler.Status)
		}

		adminAuthRoutes := api.Group("/admin/auth")
		{
			adminAuthRoutes.GET("/captcha", adminAuthHandler.Captcha)
			adminAuthRoutes.POST("/login", adminAuthHandler.Login)
			adminAuthRoutes.POST("/refresh", adminAuthHandler.Refresh)
		}

		adminRoutes := api.Group("/admin", requireAdmin)
		{
			adminRoutes.GET("/me", adminAuthHandler.Me)
			adminRoutes.POST("/auth/logout", adminAuthHandler.Logout)
			adminRoutes.POST("/files/upload", fileHandler.Upload)
			adminRoutes.GET("/dashboard", adminDashboardHandler.Summary)
			adminRoutes.GET("/files/object", fileHandler.Object)
			adminRoutes.GET("/users", adminUserHandler.List)
			adminRoutes.POST("/users/:id/freeze", adminUserHandler.Freeze)
			adminRoutes.POST("/users/:id/unfreeze", adminUserHandler.Unfreeze)
			adminRoutes.GET("/orders", orderHandler.AdminList)
			adminRoutes.GET("/orders/:id", orderHandler.AdminDetail)
			adminRoutes.GET("/orders/:id/handoff-records", orderHandler.AdminHandoffRecords)
			adminRoutes.POST("/orders/:id/close", orderHandler.AdminClose)
			adminRoutes.POST("/orders/:id/mark-abnormal", orderHandler.AdminMarkAbnormal)
			adminRoutes.GET("/listings", listingHandler.ListAdmin)
			adminRoutes.GET("/listings/pending", listingHandler.ListPendingReview)
			adminRoutes.GET("/listings/:id", listingHandler.FindAdmin)
			adminRoutes.POST("/listings/:id/approve", listingHandler.Approve)
			adminRoutes.POST("/listings/:id/reject", listingHandler.Reject)
			adminRoutes.POST("/listings/:id/offline", listingHandler.AdminOffline)
			adminRoutes.POST("/listings/:id/mark-abnormal", listingHandler.AdminMarkAbnormal)
			adminRoutes.GET("/disputes", disputeHandler.AdminList)
			adminRoutes.POST("/disputes/:id/arbitrate", disputeHandler.AdminArbitrate)
			adminRoutes.GET("/wallet/ledger", walletHandler.AdminLedger)
			adminRoutes.GET("/system-configs", systemConfigHandler.List)
			adminRoutes.PUT("/system-configs/:key", systemConfigHandler.Update)
			adminRoutes.GET("/audit-logs", adminAuditHandler.List)
		}
	}

	return engine
}