package main

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

	"github.com/gin-gonic/gin"
	"github.com/go-redis/redis/v8"
	"github.com/joho/godotenv"
	"github.com/trackeep/backend/config"
	"github.com/trackeep/backend/handlers"
	"github.com/trackeep/backend/middleware"
	"github.com/trackeep/backend/models"
	"github.com/trackeep/backend/utils"
)

func IsDemoMode() bool {
	return os.Getenv("VITE_DEMO_MODE") == "true"
}

func initializeSecuritySecrets() error {
	// Only set JWT_SECRET if not already provided in environment
	if os.Getenv("JWT_SECRET") == "" {
		jwtSecret, err := utils.GetOrCreateJWTSecret()
		if err != nil {
			return err
		}
		os.Setenv("JWT_SECRET", jwtSecret)
		log.Println("JWT secret initialized from file")
	} else {
		log.Println("JWT secret found in environment variable")
	}

	// Only set ENCRYPTION_KEY if not already provided in environment
	if os.Getenv("ENCRYPTION_KEY") == "" {
		encryptionKey, err := utils.GetOrCreateEncryptionKey()
		if err != nil {
			return err
		}
		os.Setenv("ENCRYPTION_KEY", encryptionKey)
		log.Println("Encryption key initialized from file")
	} else {
		log.Println("Encryption key found in environment variable")
	}

	return nil
}

// initializeDragonflyDB initializes DragonflyDB (Redis-compatible) connection
func initializeDragonflyDB() *redis.Client {
	dragonflyAddr := os.Getenv("DRAGONFLY_ADDR")
	dragonflyPassword := os.Getenv("DRAGONFLY_PASSWORD")

	if dragonflyAddr == "" {
		log.Println("DRAGONFLY_ADDR not set, using default: localhost:6379")
		dragonflyAddr = "localhost:6379"
	}

	rdb := redis.NewClient(&redis.Options{
		Addr:         dragonflyAddr,
		Password:     dragonflyPassword,
		DialTimeout:  5 * time.Second,
		ReadTimeout:  3 * time.Second,
		WriteTimeout: 3 * time.Second,
		PoolSize:     20,
	})

	// Test connection
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	_, err := rdb.Ping(ctx).Result()
	if err != nil {
		log.Printf("Warning: Failed to connect to DragonflyDB at %s: %v", dragonflyAddr, err)
		log.Println("Falling back to in-memory cache and sessions")
		return nil
	}

	log.Printf("Successfully connected to DragonflyDB at %s", dragonflyAddr)
	return rdb
}

func main() {
	os.Setenv("APP_VERSION", "1.0.0")

	envPaths := []string{".env", "../.env", "/app/.env"}
	envLoaded := false

	for _, path := range envPaths {
		if err := godotenv.Load(path); err == nil {
			log.Printf("Loaded .env from: %s", path)
			envLoaded = true
			break
		}
	}

	if !envLoaded {
		log.Println("No .env file found, using environment variables only")
	}

	cfg := config.Load()
	if err := cfg.Validate(); err != nil {
		log.Printf("Configuration warning: %v", err)
	}

	if !cfg.App.DemoMode {
		config.InitDatabase()
		models.InitDB()
		if err := models.AutoMigrate(); err != nil {
			log.Fatal("Failed to auto-migrate database:", err)
		}
	} else {
		log.Println("Demo mode enabled, skipping database initialization")
	}

	// Initialize security secrets
	if err := initializeSecuritySecrets(); err != nil {
		log.Fatal("Failed to initialize security secrets:", err)
	}

	// Initialize DragonflyDB
	dragonflyClient := initializeDragonflyDB()

	// Initialize session store with DragonflyDB
	middleware.InitSessionStore(dragonflyClient)
	log.Println("Session store initialized successfully")

	// Initialize cache middleware with DragonflyDB
	var cacheConfig middleware.CacheConfig
	if dragonflyClient != nil {
		cacheConfig = middleware.CacheConfig{
			Duration:    5 * time.Minute,
			KeyPrefix:   "trackeep:",
			Enabled:     true,
			RedisClient: dragonflyClient,
		}
		log.Println("DragonflyDB cache middleware initialized")
	} else {
		cacheConfig = middleware.DefaultCacheConfig()
		log.Println("Using in-memory cache fallback")
	}

	// Seed demo data in background
	// go func() {
	//	SeedData()
	// }()

	// Set Gin mode
	if os.Getenv("GIN_MODE") == "release" || os.Getenv("GIN_MODE") == "production" {
		gin.SetMode(gin.ReleaseMode)
	}

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

	// Middleware
	r.Use(gin.Logger())
	r.Use(gin.Recovery())
	r.Use(middleware.CORSMiddleware())
	r.Use(middleware.CacheMiddleware(cacheConfig))                 // Add DragonflyDB cache middleware
	r.Use(middleware.CacheInvalidationMiddleware(dragonflyClient)) // Add cache invalidation
	r.Use(middleware.SessionMiddleware())                          // Add session middleware
	r.Use(middleware.AuditMiddleware())
	r.Use(middleware.InputValidationMiddleware())

	// Initialize rate limiters
	rateLimitConfig := middleware.DefaultRateLimitConfig()
	rateLimiters := middleware.RateLimit(rateLimitConfig)

	// Apply general rate limiting to all endpoints
	r.Use(middleware.GeneralRateLimit(rateLimiters["general"]))

	r.GET("/health", handlers.HealthCheck)
	r.GET("/ready", handlers.ReadinessCheck)
	r.GET("/live", handlers.LivenessCheck)
	r.GET("/api/v1/config", handlers.GetAPIConfig)

	// Demo status endpoint
	r.GET("/api/demo/status", handlers.DemoStatus)

	// Update endpoints
	r.GET("/api/updates/check", handlers.CheckForUpdates)
	r.POST("/api/updates/install", handlers.InstallUpdate)
	r.GET("/api/updates/progress", handlers.GetUpdateProgress)
	r.GET("/api/updates/ws", handlers.UpdateProgressWebSocket)

	// Serve static files (frontend)
	r.Static("/assets", "../frontend/dist/assets")
	r.StaticFile("/", "../frontend/dist/index.html")

	// Serve browser extension download
	r.GET("/browser-extension", handlers.DownloadBrowserExtension)

	r.NoRoute(func(c *gin.Context) {
		c.File("../frontend/dist/index.html")
	})

	// Version endpoint
	r.GET("/api/version", handlers.GetVersionHandler)

	// Initialize handlers
	memberHandler := handlers.NewMemberHandler(config.GetDB())
	timeEntryHandler := handlers.NewTimeEntryHandler(config.GetDB())
	calendarHandler := handlers.NewCalendarHandler(config.GetDB())
	integrationHandler := handlers.NewIntegrationHandler(config.GetDB())
	analyticsHandler := handlers.NewAnalyticsHandler(config.GetDB())
	learningProgressHandler := handlers.NewLearningProgressHandler(config.GetDB())
	webScrapingHandler := handlers.NewWebScrapingHandler(config.GetDB())
	knowledgeBaseHandler := handlers.NewKnowledgeBaseHandler(config.GetDB())
	goalsHabitsHandler := handlers.NewGoalsHabitsHandler(config.GetDB())
	socialHandler := handlers.NewSocialHandler(config.GetDB())
	teamsHandler := handlers.NewTeamsHandler(config.GetDB())
	aiRecommendationHandler := handlers.NewAIRecommendationHandler(config.GetDB())
	marketplaceHandler := handlers.NewMarketplaceHandler(config.GetDB())
	communityHandler := handlers.NewCommunityHandler(config.GetDB())
	performanceHandler := handlers.NewPerformanceHandler(config.GetDB())

	// API v1 routes
	v1 := r.Group("/api/v1")
	{
		// Auth routes
		auth := v1.Group("/auth")
		{
			auth.GET("/check-users", handlers.CheckUsers)
			auth.POST("/register", middleware.AuthRateLimit(rateLimiters["auth"]), handlers.Register)
			auth.POST("/login", middleware.AuthRateLimit(rateLimiters["auth"]), handlers.Login)
			auth.POST("/login-totp", middleware.AuthRateLimit(rateLimiters["auth"]), handlers.LoginWithTOTP)
			auth.POST("/logout", handlers.Logout)
			auth.GET("/me", handlers.AuthMiddleware(), handlers.GetCurrentUserWithGitHub)
			auth.POST("/password-reset", middleware.AuthRateLimit(rateLimiters["auth"]), handlers.RequestPasswordReset)
			auth.POST("/password-reset/confirm", middleware.AuthRateLimit(rateLimiters["auth"]), handlers.ConfirmPasswordReset)
			auth.GET("/control/callback", handlers.HandleOAuthCallback)

			// Unified GitHub sign-in route
			auth.GET("/github", handlers.GitHubLogin)
		}

		// GitHub App callback (public for control service redirect)
		v1.GET("/github/app/callback", handlers.GitHubAppInstallCallback)

		// GitHub routes (protected)
		github := v1.Group("/github")
		github.Use(handlers.AuthMiddleware())
		{
			github.GET("/repos", handlers.GetGitHubRepos)
			github.GET("/app/status", handlers.GetGitHubAppStatus)
			github.GET("/app/install-url", handlers.GetGitHubAppInstallURL)
			github.GET("/app/repos", handlers.GetGitHubAppRepos)
			github.GET("/backups", handlers.GetGitHubBackups)
			github.POST("/backups", handlers.BackupGitHubRepositories)
			github.GET("/activity", handlers.GetGitHubActivity)
		}

		v1.POST("/youtube-search-test", handlers.YouTubeSearchTest)

		// Protected auth routes (with demo mode protection)
		authProtected := v1.Group("/auth")
		authProtected.Use(handlers.AuthMiddleware())
		authProtected.Use(middleware.DemoModeMiddleware())
		{
			authProtected.PUT("/profile", handlers.UpdateProfile)
			authProtected.PUT("/password", handlers.ChangePassword)

			// 2FA routes
			authProtected.POST("/2fa/setup", handlers.SetupTOTP)
			authProtected.POST("/2fa/verify", handlers.VerifyTOTP)
			authProtected.POST("/2fa/enable", handlers.EnableTOTP)
			authProtected.POST("/2fa/disable", handlers.DisableTOTP)
			authProtected.GET("/2fa/status", handlers.GetTOTPStatus)
			authProtected.POST("/2fa/backup-codes/verify", handlers.VerifyBackupCode)
			authProtected.POST("/2fa/backup-codes/regenerate", handlers.RegenerateBackupCodes)

			// Encryption routes
			authProtected.POST("/encrypt/content", handlers.EncryptNoteContent)
			authProtected.POST("/decrypt/content", handlers.DecryptNoteContent)
			authProtected.GET("/encryption/status", handlers.GetEncryptionStatus)

			// AI Settings routes
			authProtected.GET("/ai/settings", handlers.GetAISettings)
			authProtected.PUT("/ai/settings", handlers.UpdateAISettings)
			authProtected.POST("/ai/test-connection", handlers.TestAIConnection)

			// Search Settings routes
			authProtected.GET("/search/settings", handlers.GetSearchSettings)
			authProtected.PUT("/search/settings", handlers.UpdateSearchSettings)

			// Update Settings routes
			authProtected.GET("/update/settings", handlers.GetUpdateSettings)
			authProtected.PUT("/update/settings", handlers.UpdateUpdateSettings)
		}

		// Test AI settings without auth
		v1.GET("/test-ai-settings", handlers.GetAISettings)

		// Test search and update settings without auth (for demo mode)
		v1.GET("/test-search-settings", handlers.GetTestSearchSettings)
		v1.GET("/test-update-settings", handlers.GetTestUpdateSettings)

		// Dashboard routes (protected)
		dashboard := v1.Group("/dashboard")
		dashboard.Use(handlers.AuthMiddleware())
		{
			dashboard.GET("/stats", handlers.GetDashboardStats)
		}

		// Bookmark routes (protected)
		bookmarks := v1.Group("/bookmarks")
		bookmarks.Use(handlers.AuthMiddleware())
		bookmarks.Use(middleware.DemoModeMiddleware())
		{
			bookmarks.GET("", handlers.GetBookmarks)
			bookmarks.POST("", handlers.CreateBookmark)
			bookmarks.GET("/:id", handlers.GetBookmark)
			bookmarks.PUT("/:id", handlers.UpdateBookmark)
			bookmarks.DELETE("/:id", handlers.DeleteBookmark)
			bookmarks.POST("/:id/refresh-metadata", handlers.RefreshBookmarkMetadata)
			bookmarks.POST("/metadata", handlers.GetBookmarkMetadata)
			bookmarks.POST("/content", handlers.GetBookmarkContent)
		}

		// Task routes (protected)
		tasks := v1.Group("/tasks")
		tasks.Use(handlers.AuthMiddleware())
		tasks.Use(middleware.DemoModeMiddleware())
		{
			tasks.GET("", handlers.GetTasks)
			tasks.POST("", handlers.CreateTask)
			tasks.GET("/:id", handlers.GetTask)
			tasks.PUT("/:id", handlers.UpdateTask)
			tasks.DELETE("/:id", handlers.DeleteTask)
		}

		// File routes (protected)
		files := v1.Group("/files")
		files.Use(handlers.AuthMiddleware())
		files.Use(middleware.DemoModeMiddleware())
		{
			files.GET("", handlers.GetFiles)
			files.POST("/upload", handlers.UploadFile)
			files.GET("/:id", handlers.GetFile)
			files.GET("/:id/download", handlers.DownloadFile)
			files.POST("/:id/share", handlers.CreateFileShare)
			files.GET("/:id/shares", handlers.GetFileShares)
			files.DELETE("/:id/shares/:shareId", handlers.DeleteFileShare)
			files.DELETE("/:id", handlers.DeleteFile)

			// Encrypted files
			files.POST("/upload/encrypted", handlers.UploadEncryptedFile)
			files.GET("/:id/download/encrypted", handlers.DownloadEncryptedFile)
		}

		// Admin routes (admin only)
		admin := v1.Group("/admin")
		admin.Use(handlers.AuthMiddleware())
		admin.Use(handlers.AdminMiddleware())
		{
			// Learning paths management
			admin.GET("/learning-paths", handlers.AdminGetAllLearningPaths)
			admin.PUT("/learning-paths/:id/review", handlers.AdminReviewLearningPath)
			admin.DELETE("/learning-paths/:id", handlers.AdminDeleteLearningPath)

			// User management
			admin.GET("/users", handlers.AdminGetUsers)
			admin.PUT("/users/:id/role", handlers.AdminUpdateUserRole)

			// Admin stats
			admin.GET("/stats", handlers.AdminGetStats)

			// Audit logs
			admin.GET("/audit-logs", handlers.GetAuditLogs)
			admin.GET("/audit-logs/stats", handlers.GetAuditLogStats)
			admin.GET("/audit-logs/:id", handlers.GetAuditLog)
			admin.GET("/audit-logs/export", handlers.ExportAuditLogs)
			admin.DELETE("/audit-logs/cleanup", handlers.CleanupAuditLogs)
		}

		// Learning paths categories endpoint (public)
		v1.GET("/learning-paths/categories", handlers.GetLearningPathCategories)

		// Learning paths routes (protected)
		learningPaths := v1.Group("/learning-paths")
		learningPaths.Use(middleware.DemoModeMiddleware())
		learningPaths.Use(handlers.AuthMiddleware())
		{
			learningPaths.GET("", handlers.GetLearningPaths)
			learningPaths.POST("", handlers.CreateLearningPath)
			learningPaths.GET("/:id", handlers.GetLearningPath)
			learningPaths.PUT("/:id", handlers.UpdateLearningPath)
			learningPaths.DELETE("/:id", handlers.DeleteLearningPath)
			learningPaths.POST("/:id/enroll", handlers.EnrollInLearningPath)
			learningPaths.GET("/:id/courses", handlers.GetLearningPathCourses)
		}

		// Courses routes (protected)
		courses := v1.Group("/courses")
		courses.Use(handlers.AuthMiddleware())
		{
			courses.GET("", handlers.GetCourses)
			courses.GET("/featured", handlers.GetFeaturedCourses)
			courses.GET("/ztm", handlers.GetZTMCourses)
			courses.GET("/categories", handlers.GetCourseCategories)
			courses.POST("/search", handlers.SearchCourses)
			courses.GET("/:id", handlers.GetCourse)
			courses.GET("/slug/:slug", handlers.GetCourseBySlug)
		}

		// Enrollments routes (protected)
		enrollments := v1.Group("/enrollments")
		enrollments.Use(handlers.AuthMiddleware())
		{
			enrollments.GET("", handlers.GetUserEnrollments)
			enrollments.PUT("/:id/progress", handlers.UpdateProgress)
			enrollments.POST("/:id/rate", handlers.RateLearningPath)
		}

		// Notes routes (protected)
		notes := v1.Group("/notes")
		notes.Use(handlers.AuthMiddleware())
		notes.Use(middleware.DemoModeMiddleware())
		{
			notes.GET("", handlers.GetNotes)
			notes.POST("", handlers.CreateNote)
			notes.GET("/:id", handlers.GetNote)
			notes.PUT("/:id", handlers.UpdateNote)
			notes.DELETE("/:id", handlers.DeleteNote)
			notes.GET("/stats", handlers.GetNoteStats)

			// Encrypted notes
			notes.POST("/encrypted", handlers.CreateEncryptedNote)
			notes.GET("/:id/encrypted", handlers.GetEncryptedNote)
		}

		// Chat routes (protected)
		chat := v1.Group("/chat")
		chat.Use(handlers.AuthMiddleware())
		{
			chat.POST("/send", handlers.SendMessage)
			chat.GET("/sessions", handlers.GetSessions)
			chat.GET("/sessions/:id/messages", handlers.GetSessionMessages)
			chat.DELETE("/sessions/:id", handlers.DeleteSession)
		}

		// Messaging routes (Discord-like user communication)
		messages := v1.Group("/messages")
		messages.Use(handlers.AuthMiddleware())
		{
			messages.GET("/conversations", handlers.GetConversations)
			messages.POST("/conversations", handlers.CreateConversation)
			messages.GET("/conversations/:id", handlers.GetConversation)
			messages.PATCH("/conversations/:id", handlers.UpdateConversation)
			messages.POST("/conversations/:id/members", handlers.AddConversationMember)
			messages.DELETE("/conversations/:id/members/:userId", handlers.RemoveConversationMember)
			messages.GET("/conversations/:id/messages", handlers.GetConversationMessages)
			messages.POST("/conversations/:id/messages", handlers.CreateConversationMessage)
			messages.PATCH("/messages/:id", handlers.UpdateMessage)
			messages.DELETE("/messages/:id", handlers.DeleteMessage)
			messages.POST("/messages/:id/reactions", handlers.AddMessageReaction)
			messages.DELETE("/messages/:id/reactions/:emoji", handlers.RemoveMessageReaction)
			messages.POST("/messages/search", handlers.SearchMessages)
			messages.GET("/messages/:id/suggestions", handlers.GetMessageSuggestions)
			messages.POST("/messages/:id/suggestions/:suggestionId/accept", handlers.AcceptMessageSuggestion)
			messages.POST("/messages/:id/suggestions/:suggestionId/dismiss", handlers.DismissMessageSuggestion)
			messages.POST("/messages/:id/reveal-sensitive", handlers.RevealSensitiveMessage)
			messages.GET("/ws", handlers.MessagesWebSocket)

			messages.GET("/password-vault/items", handlers.GetPasswordVaultItems)
			messages.POST("/password-vault/items", handlers.CreatePasswordVaultItem)
			messages.POST("/password-vault/items/:id/share", handlers.SharePasswordVaultItem)
			messages.POST("/password-vault/items/:id/reveal", handlers.RevealPasswordVaultItem)
			messages.POST("/password-vault/items/:id/unshare", handlers.UnsharePasswordVaultItem)
		}

		// Member routes (protected)
		members := v1.Group("/members")
		members.Use(handlers.AuthMiddleware())
		{
			members.GET("", memberHandler.GetMembers)
			members.GET("/stats", memberHandler.GetMemberStats)
		}

		// YouTube routes (protected)
		youtube := v1.Group("/youtube")
		youtube.Use(handlers.AuthMiddleware())
		{
			youtube.POST("/search", handlers.SearchYouTube)
			youtube.POST("/video-details", handlers.GetYouTubeVideoDetails)
			youtube.POST("/channel-videos", handlers.GetYouTubeChannelVideos)
			youtube.POST("/channel-from-url", handlers.GetYouTubeChannelVideosFromURL)
			youtube.GET("/trending", handlers.GetYouTubeTrending)
			youtube.GET("/predefined-channels", handlers.GetPredefinedChannelVideos)

			// YouTube Channel routes
			youtube.GET("/fireship", handlers.GetFireshipVideos)
			youtube.GET("/network-chuck", handlers.GetNetworkChuckVideos)
			youtube.POST("/channel", handlers.GetChannelVideos)
		}

		videoBookmarks := v1.Group("/video-bookmarks")
		videoBookmarks.Use(handlers.AuthMiddleware())
		{
			videoBookmarkHandler := handlers.NewVideoBookmarkHandler()
			videoBookmarks.POST("", videoBookmarkHandler.SaveVideoBookmark)
			videoBookmarks.GET("", videoBookmarkHandler.GetUserBookmarks)
			videoBookmarks.GET("/search", videoBookmarkHandler.SearchBookmarks)
			videoBookmarks.GET("/stats", videoBookmarkHandler.GetBookmarkStats)
			videoBookmarks.GET("/:id", videoBookmarkHandler.GetBookmarkByID)
			videoBookmarks.PUT("/:id", videoBookmarkHandler.UpdateBookmark)
			videoBookmarks.DELETE("/:id", videoBookmarkHandler.DeleteBookmark)
			videoBookmarks.POST("/:id/toggle-watched", videoBookmarkHandler.ToggleWatched)
			videoBookmarks.POST("/:id/toggle-favorite", videoBookmarkHandler.ToggleFavorite)
		}

		// Search routes (protected)
		search := v1.Group("/search")
		search.Use(handlers.AuthMiddleware())
		{
			search.POST("/web", handlers.SearchWeb)
			search.POST("/news", handlers.SearchNews)
			search.GET("/suggestions", handlers.GetSearchSuggestions)

			// Enhanced search features
			search.POST("/enhanced", handlers.EnhancedSearch)
			search.POST("/save", handlers.SaveSearch)
			search.GET("/analytics", handlers.GetSearchAnalytics)

			// Saved searches management
			savedSearches := search.Group("/saved")
			{
				savedSearches.POST("", handlers.CreateSavedSearch)
				savedSearches.GET("", handlers.GetUserSavedSearches)
				savedSearches.GET("/:id", handlers.GetSavedSearch)
				savedSearches.PUT("/:id", handlers.UpdateSavedSearch)
				savedSearches.DELETE("/:id", handlers.DeleteSavedSearch)
				savedSearches.POST("/:id/run", handlers.RunSavedSearch)
				savedSearches.GET("/tags", handlers.GetSavedSearchTags)
			}

			// Semantic search features
			search.POST("/semantic", handlers.SemanticSearch)
			search.POST("/embeddings/generate", handlers.GenerateEmbedding)
			search.POST("/reindex", handlers.ReindexContent)
		}

		// Time tracking routes (protected)
		timeEntries := v1.Group("/time-entries")
		timeEntries.Use(handlers.AuthMiddleware())
		timeEntries.Use(middleware.DemoModeMiddleware())
		{
			timeEntries.GET("", timeEntryHandler.GetTimeEntries)
			timeEntries.POST("", timeEntryHandler.CreateTimeEntry)
			timeEntries.GET("/stats", timeEntryHandler.GetTimeStats)
			timeEntries.GET("/:id", timeEntryHandler.GetTimeEntry)
			timeEntries.PUT("/:id", timeEntryHandler.UpdateTimeEntry)
			timeEntries.POST("/:id/stop", timeEntryHandler.StopTimeEntry)
			timeEntries.DELETE("/:id", timeEntryHandler.DeleteTimeEntry)
		}

		// Calendar routes (protected)
		calendar := v1.Group("/calendar")
		calendar.Use(handlers.AuthMiddleware())
		{
			calendar.GET("", calendarHandler.GetEvents)
			calendar.GET("/:id", calendarHandler.GetEvent)
			calendar.POST("", calendarHandler.CreateEvent)
			calendar.PUT("/:id", calendarHandler.UpdateEvent)
			calendar.DELETE("/:id", calendarHandler.DeleteEvent)
			calendar.GET("/upcoming", calendarHandler.GetUpcomingEvents)
			calendar.GET("/today", calendarHandler.GetTodayEvents)
			calendar.GET("/deadlines", calendarHandler.GetDeadlines)
			calendar.PUT("/:id/toggle-complete", calendarHandler.ToggleEventCompletion)
		}

		// AI Features routes (protected)
		ai := v1.Group("/ai")
		ai.Use(handlers.AuthMiddleware())
		{
			// AI providers
			ai.GET("/providers", handlers.GetAIProviders)

			// Content summarization
			ai.POST("/summarize", handlers.SummarizeContent)
			ai.GET("/summaries", handlers.GetAISummaries)

			// Task suggestions
			ai.POST("/tasks/suggest", handlers.GetTaskSuggestions)
			ai.GET("/tasks/suggestions", handlers.GetTaskSuggestionsList)
			ai.POST("/tasks/suggestions/:id/accept", handlers.AcceptTaskSuggestion)
			ai.POST("/tasks/suggestions/:id/dismiss", handlers.DismissTaskSuggestion)

			// Tag suggestions
			ai.POST("/tags/suggest", handlers.GenerateTagSuggestions)

			// Content generation
			ai.POST("/content/generate", handlers.GenerateContent)
		}

		// Integration routes (protected)
		integrations := v1.Group("/integrations")
		integrations.Use(handlers.AuthMiddleware())
		{
			integrations.GET("", integrationHandler.GetIntegrations)
			integrations.POST("", integrationHandler.CreateIntegration)
			integrations.GET("/:id", integrationHandler.GetIntegration)
			integrations.PUT("/:id", integrationHandler.UpdateIntegration)
			integrations.DELETE("/:id", integrationHandler.DeleteIntegration)
			integrations.POST("/:id/authorize", integrationHandler.AuthorizeIntegration)
			integrations.POST("/:id/sync", integrationHandler.SyncIntegration)
			integrations.GET("/:id/sync-logs", integrationHandler.GetSyncLogs)
		}

		// OAuth callback route (public)
		v1.GET("/integrations/oauth/callback", integrationHandler.OAuthCallback)

		// Analytics routes (protected)
		analytics := v1.Group("/analytics")
		analytics.Use(handlers.AuthMiddleware())
		{
			analytics.GET("/dashboard", analyticsHandler.GetDashboardAnalytics)
			analytics.GET("/productivity", analyticsHandler.GetProductivityMetrics)
			analytics.GET("/learning", analyticsHandler.GetLearningAnalytics)
			analytics.GET("/content", analyticsHandler.GetContentAnalytics)
			analytics.GET("/github", analyticsHandler.GetGitHubAnalytics)
			analytics.GET("/goals", analyticsHandler.GetGoals)
			analytics.POST("/goals", analyticsHandler.CreateGoal)
			analytics.PUT("/goals/:id", analyticsHandler.UpdateGoal)
			analytics.DELETE("/goals/:id", analyticsHandler.DeleteGoal)
			analytics.POST("/reports", analyticsHandler.GenerateAnalyticsReport)
			analytics.POST("/generate-daily", analyticsHandler.GenerateDailyAnalytics)
		}

		// Learning progress routes (protected)
		learning := v1.Group("/learning")
		learning.Use(handlers.AuthMiddleware())
		{
			learning.POST("/progress", learningProgressHandler.UpdateLearningProgress)
			learning.GET("/progress", learningProgressHandler.GetLearningProgress)
			learning.GET("/progress/:courseId", learningProgressHandler.GetCourseProgress)
			learning.POST("/progress/:courseId/complete", learningProgressHandler.MarkCourseCompleted)
		}

		// Web scraping routes (protected)
		webScraping := v1.Group("/web-scraping")
		webScraping.Use(handlers.AuthMiddleware())
		{
			// Scraping jobs
			webScraping.POST("/jobs", webScrapingHandler.CreateScrapingJob)
			webScraping.GET("/jobs", webScrapingHandler.GetScrapingJobs)
			webScraping.GET("/jobs/:id", webScrapingHandler.GetScrapingJob)
			webScraping.DELETE("/jobs/:id", webScrapingHandler.DeleteScrapingJob)

			// Scraped content
			webScraping.GET("/content", webScrapingHandler.GetScrapedContentList)
			webScraping.GET("/content/:id", webScrapingHandler.GetScrapedContent)
			webScraping.DELETE("/content/:id", webScrapingHandler.DeleteScrapedContent)
			webScraping.GET("/search", webScrapingHandler.SearchScrapedContent)
		}

		// Knowledge base routes (protected)
		knowledgeBase := v1.Group("/knowledge-base")
		knowledgeBase.Use(handlers.AuthMiddleware())
		{
			// Wiki pages
			knowledgeBase.POST("/pages", knowledgeBaseHandler.CreateWikiPage)
			knowledgeBase.GET("/pages", knowledgeBaseHandler.GetWikiPages)
			knowledgeBase.GET("/pages/search", knowledgeBaseHandler.SearchWikiPages)
			knowledgeBase.GET("/pages/:id", knowledgeBaseHandler.GetWikiPage)
			knowledgeBase.PUT("/pages/:id", knowledgeBaseHandler.UpdateWikiPage)
			knowledgeBase.DELETE("/pages/:id", knowledgeBaseHandler.DeleteWikiPage)

			// Categories
			knowledgeBase.POST("/categories", knowledgeBaseHandler.CreateCategory)
			knowledgeBase.GET("/categories", knowledgeBaseHandler.GetCategories)
		}

		// Goals and habits routes (protected)
		goalsHabits := v1.Group("/goals-habits")
		goalsHabits.Use(handlers.AuthMiddleware())
		{
			// Goals
			goalsHabits.POST("/goals", goalsHabitsHandler.CreateGoal)
			goalsHabits.GET("/goals", goalsHabitsHandler.GetGoals)
			goalsHabits.GET("/goals/:id", goalsHabitsHandler.GetGoal)
			goalsHabits.PUT("/goals/:id", goalsHabitsHandler.UpdateGoal)
			goalsHabits.DELETE("/goals/:id", goalsHabitsHandler.DeleteGoal)

			// Habits
			goalsHabits.POST("/habits", goalsHabitsHandler.CreateHabit)
			goalsHabits.GET("/habits", goalsHabitsHandler.GetHabits)
			goalsHabits.GET("/habits/:id", goalsHabitsHandler.GetHabit)
			goalsHabits.PUT("/habits/:id", goalsHabitsHandler.UpdateHabit)
			goalsHabits.DELETE("/habits/:id", goalsHabitsHandler.DeleteHabit)

			// Habit entries
			goalsHabits.POST("/habit-entries", goalsHabitsHandler.CreateHabitEntry)
			goalsHabits.GET("/habits/:id/entries", goalsHabitsHandler.GetHabitEntries)

			// Dashboard stats
			goalsHabits.GET("/dashboard/stats", goalsHabitsHandler.GetDashboardStats)
		}

		// Social features routes (protected)
		social := v1.Group("/social")
		social.Use(handlers.AuthMiddleware())
		{
			// User profiles
			social.GET("/users/:id", socialHandler.GetProfile)
			social.PUT("/profile", socialHandler.UpdateProfile)
			social.GET("/users/search", socialHandler.SearchUsers)

			// Following system
			social.POST("/users/:id/follow", socialHandler.FollowUser)
			social.GET("/users/:id/followers", socialHandler.GetFollowers)
			social.GET("/users/:id/following", socialHandler.GetFollowing)
		}

		// Team workspaces routes (protected)
		teams := v1.Group("/teams")
		teams.Use(handlers.AuthMiddleware())
		{
			// Team management
			teams.GET("", teamsHandler.GetTeams)
			teams.POST("", teamsHandler.CreateTeam)
			teams.GET("/:id", teamsHandler.GetTeam)
			teams.PUT("/:id", teamsHandler.UpdateTeam)
			teams.DELETE("/:id", teamsHandler.DeleteTeam)

			// Team members
			teams.GET("/:id/members", teamsHandler.GetTeamMembers)
			teams.DELETE("/:id/members/:memberId", teamsHandler.RemoveMember)

			// Team invitations
			teams.POST("/:id/invite", teamsHandler.InviteMember)
			teams.POST("/invitations/:token/accept", teamsHandler.AcceptInvitation)

			// Team activity and stats
			teams.GET("/:id/activity", teamsHandler.GetTeamActivity)
			teams.GET("/:id/stats", teamsHandler.GetTeamStats)
		}

		// AI Recommendations routes (protected)
		recommendations := v1.Group("/recommendations")
		recommendations.Use(handlers.AuthMiddleware())
		{
			recommendations.GET("", aiRecommendationHandler.GetRecommendations)
			recommendations.GET("/stats", aiRecommendationHandler.GetRecommendationStats)
			recommendations.PUT("/preferences", aiRecommendationHandler.UpdatePreferences)
			recommendations.GET("/history", aiRecommendationHandler.GetRecommendationHistory)
			recommendations.GET("/insights", aiRecommendationHandler.GetInsights)
			recommendations.POST("/:id/interaction", aiRecommendationHandler.RecordInteraction)
			recommendations.DELETE("/:id", aiRecommendationHandler.DeleteRecommendation)
		}

		// Marketplace routes (protected)
		marketplace := v1.Group("/marketplace")
		marketplace.Use(handlers.AuthMiddleware())
		{
			// Public marketplace items
			marketplace.GET("/items", marketplaceHandler.GetMarketplaceItems)
			marketplace.GET("/items/:id", marketplaceHandler.GetMarketplaceItem)
			marketplace.GET("/items/:id/reviews", marketplaceHandler.GetMarketplaceReviews)
			marketplace.GET("/stats", marketplaceHandler.GetMarketplaceStats)

			// User's marketplace items
			marketplace.GET("/my-items", marketplaceHandler.GetMyMarketplaceItems)
			marketplace.POST("/items", marketplaceHandler.CreateMarketplaceItem)
			marketplace.PUT("/items/:id", marketplaceHandler.UpdateMarketplaceItem)
			marketplace.DELETE("/items/:id", marketplaceHandler.DeleteMarketplaceItem)

			// Reviews
			marketplace.POST("/items/:id/reviews", marketplaceHandler.CreateMarketplaceReview)

			// Content sharing
			marketplace.GET("/shares", marketplaceHandler.GetMyContentShares)
			marketplace.POST("/shares", marketplaceHandler.CreateContentShare)
			marketplace.DELETE("/shares/:id", marketplaceHandler.DeleteContentShare)
		}

		// Public content sharing routes (no auth required)
		v1.GET("/shared/:token", marketplaceHandler.GetContentShare)

		// Community routes (protected)
		community := v1.Group("/community")
		community.Use(handlers.AuthMiddleware())
		{
			// Challenges
			community.GET("/challenges", communityHandler.GetChallenges)
			community.GET("/challenges/:id", communityHandler.GetChallenge)
			community.POST("/challenges", communityHandler.CreateChallenge)
			community.POST("/challenges/:id/join", communityHandler.JoinChallenge)
			community.PUT("/challenges/:id/progress", communityHandler.UpdateChallengeProgress)
			community.GET("/my-challenges", communityHandler.GetMyChallenges)

			// Mentorship
			community.GET("/mentorship/requests", communityHandler.GetMentorshipRequests)
			community.POST("/mentorship/requests", communityHandler.CreateMentorshipRequest)
			community.PUT("/mentorship/requests/:id/respond", communityHandler.RespondToMentorshipRequest)
			community.GET("/mentorship/my-mentorships", communityHandler.GetMyMentorships)
			community.POST("/mentorship/:id/sessions", communityHandler.CreateMentorshipSession)
			community.GET("/mentorship/:id/sessions", communityHandler.GetMentorshipSessions)

			// Community stats
			community.GET("/stats", communityHandler.GetCommunityStats)
		}

		// Performance routes (admin only)
		performance := v1.Group("/performance")
		performance.Use(handlers.AuthMiddleware())
		performance.Use(handlers.AdminMiddleware())
		{
			performance.GET("/stats", performanceHandler.GetDatabaseStats)
			performance.GET("/monitor", performanceHandler.MonitorPerformance)
			performance.POST("/optimize", performanceHandler.OptimizeDatabase)
			performance.POST("/cleanup-audit-logs", performanceHandler.CleanupOldAuditLogs)
		}

		// Browser Extension API routes
		browserExt := v1.Group("/browser-extension")
		browserExt.Use(handlers.AuthMiddleware())
		{
			// API Key management
			browserExt.POST("/api-keys/generate", handlers.GenerateAPIKey)
			browserExt.GET("/api-keys", handlers.GetAPIKeys)
			browserExt.DELETE("/api-keys/:id", handlers.RevokeAPIKey)

			// Extension registration and validation
			browserExt.POST("/register", handlers.RegisterBrowserExtension)
			browserExt.GET("/extensions", handlers.GetBrowserExtensions)
			browserExt.DELETE("/extensions/:id", handlers.RevokeBrowserExtension)

			// Public endpoints (for extension validation)
			browserExt.GET("/validate", handlers.ValidateAPIKey)
		}
	}

	srv := &http.Server{
		Addr:         ":" + cfg.Server.Port,
		Handler:      r,
		ReadTimeout:  cfg.Server.ReadTimeout,
		WriteTimeout: cfg.Server.WriteTimeout,
		IdleTimeout:  cfg.Server.IdleTimeout,
	}

	go func() {
		log.Printf("Server starting on port %s", cfg.Server.Port)
		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			log.Fatal("Failed to start server:", err)
		}
	}()

	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
	<-quit
	log.Println("Shutting down server...")

	middleware.CleanupSessionsOnShutdown()
	log.Println("Sessions cleaned up")

	ctx, cancel := context.WithTimeout(context.Background(), cfg.Server.ShutdownTimeout)
	defer cancel()

	// Attempt graceful shutdown
	if err := srv.Shutdown(ctx); err != nil {
		log.Printf("Server forced to shutdown: %v", err)
	} else {
		log.Println("Server shutdown complete")
	}
}