package server

import (
	"music-server/cmd/web"
	"music-server/internal/logging"
	"music-server/internal/server/middleware"
	"net/http"
	"sort"
	"strings"

	"github.com/a-h/templ"
	"github.com/labstack/echo/v5"
	echoMiddleware "github.com/labstack/echo/v5/middleware"
	echoSwagger "github.com/swaggo/echo-swagger/v2"
	"go.uber.org/zap"
)

//	@Title			MusicServer API
//	@version		1.0
//	@description	API for the MusicServer application
//	@termsOfService	http://sanplex.xyz/terms/

//	@contact.name	Sebastian Olsson
//	@contact.email	zarnor91@gmail.com

//	@license.name	MIT
//	@license.url	http://opensource.org/licenses/MIT

// @host	localhost:8080
// @BasePath	/
func (s *Server) RegisterRoutes() http.Handler {
	e := echo.New()
	
	// Serve OpenAPI spec at /openapi
	e.GET("/openapi", echo.WrapHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		http.ServeFile(w, r, "cmd/docs/swagger.json")
	})))
	e.Use(logging.RequestLogger())
	e.Use(echoMiddleware.Recover())

	e.Use(echoMiddleware.CORSWithConfig(echoMiddleware.CORSConfig{
		AllowOrigins:     []string{"https://*", "http://*"},
		AllowMethods:     []string{"GET", "POST", "PUT", "DELETE", "OPTIONS", "PATCH"},
		AllowHeaders:     []string{"Accept", "Authorization", "Content-Type", "X-CSRF-Token"},
		AllowCredentials: true,
		MaxAge:           300,
	}))

	fileServer := http.FileServer(http.FS(web.Assets))
	e.GET("/assets/*", echo.WrapHandler(fileServer))

	e.GET("/search", echo.WrapHandler(templ.Handler(web.HelloForm())))
	e.POST("/find", echo.WrapHandler(http.HandlerFunc(web.FindGameWebHandler)))

	e.Static("/", "/frontend")

	// Swagger UI
	e.GET("/swagger/*", echoSwagger.WrapHandler)

	// ============================================
	// Legacy Endpoints (Deprecated - use /api/v1/ instead)
	// ============================================
	deprecatedMiddleware := middleware.DeprecationMiddleware

	index := NewIndexHandler()
	e.GET("/version", deprecatedMiddleware(index.GetVersion))
	e.GET("/dbtest", deprecatedMiddleware(index.GetDBTest))
	e.GET("/health", deprecatedMiddleware(index.HealthCheck))
	e.GET("/character", deprecatedMiddleware(index.GetCharacter))
	e.GET("/characters", deprecatedMiddleware(index.GetCharacterList))

	download := NewDownloadHandler()
	e.GET("/download", deprecatedMiddleware(download.checkLatest))
	e.GET("/download/list", deprecatedMiddleware(download.listAssetsOfLatest))
	e.GET("/download/windows", deprecatedMiddleware(download.downloadLatestWindows))
	e.GET("/download/linux", deprecatedMiddleware(download.downloadLatestLinux))

	sync := NewSyncHandler()
	syncGroup := e.Group("/sync")
	syncGroup.GET("", deprecatedMiddleware(sync.SyncGamesNewOnlyChanges))
	syncGroup.GET("/progress", deprecatedMiddleware(sync.SyncProgress))
	syncGroup.GET("/new", deprecatedMiddleware(sync.SyncGamesNewOnlyChanges))
	syncGroup.GET("/full", deprecatedMiddleware(sync.SyncGamesNewFull))
	syncGroup.GET("/new/full", deprecatedMiddleware(sync.SyncGamesNewFull))
	syncGroup.GET("/quick", deprecatedMiddleware(sync.SyncGamesNewOnlyChanges))
	syncGroup.GET("/reset", deprecatedMiddleware(sync.ResetGames))

	music := NewMusicHandler()
	musicGroup := e.Group("/music")
	musicGroup.GET("", deprecatedMiddleware(music.GetSong))
	musicGroup.GET("/soundTest", deprecatedMiddleware(music.GetSoundCheckSong))
	musicGroup.GET("/reset", deprecatedMiddleware(music.ResetMusic))
	musicGroup.GET("/rand", deprecatedMiddleware(music.GetRandomSong))
	musicGroup.GET("/rand/low", deprecatedMiddleware(music.GetRandomSongLowChance))
	musicGroup.GET("/rand/classic", deprecatedMiddleware(music.GetRandomSongClassic))
	musicGroup.GET("/info", deprecatedMiddleware(music.GetSongInfo))
	musicGroup.GET("/list", deprecatedMiddleware(music.GetPlayedSongs))
	musicGroup.GET("/next", deprecatedMiddleware(music.GetNextSong))
	musicGroup.GET("/previous", deprecatedMiddleware(music.GetPreviousSong))
	musicGroup.GET("/all", deprecatedMiddleware(music.GetAllGamesRandom))
	musicGroup.GET("/all/order", deprecatedMiddleware(music.GetAllGames))
	musicGroup.GET("/all/random", deprecatedMiddleware(music.GetAllGamesRandom))
	musicGroup.PUT("/played", deprecatedMiddleware(music.PutPlayed))
	musicGroup.GET("/addQue", deprecatedMiddleware(music.AddLatestToQue))
	musicGroup.GET("/addPlayed", deprecatedMiddleware(music.AddLatestPlayed))

	// ============================================
	// API v1 Routes with Token Authentication
	// ============================================
	
	// Create /api/v1 group
	apiV1 := e.Group("/api/v1")
	
	// Public endpoints - no token required
	apiV1.POST("/token", func(c *echo.Context) error {
		return s.tokenHandler.CreateTokenHandler(c)
	})
	apiV1.DELETE("/token", func(c *echo.Context) error {
		return s.tokenHandler.DeleteTokenHandler(c)
	})
	apiV1.POST("/token/cleanup", func(c *echo.Context) error {
		return s.tokenHandler.CleanupExpiredSessionsHandler(c)
	})

	// Protected endpoints - require valid token
	// Create token auth middleware with pool access
	tokenAuthMiddleware := middleware.TokenAuthMiddleware(s.db.Pool)

	// Protected group with token authentication
	protectedV1 := apiV1.Group("", tokenAuthMiddleware)

	// Statistics API endpoints (protected by token auth)
	statistics := s.statisticsHandler
	protectedV1.GET("/statistics/games/most-played", func(c *echo.Context) error {
		return statistics.GetMostPlayedGames(c)
	})
	protectedV1.GET("/statistics/games/least-played", func(c *echo.Context) error {
		return statistics.GetLeastPlayedGames(c)
	})
	protectedV1.GET("/statistics/games/never-played", func(c *echo.Context) error {
		return statistics.GetNeverPlayedGames(c)
	})
	protectedV1.GET("/statistics/games/last-played", func(c *echo.Context) error {
		return statistics.GetLastPlayedGames(c)
	})
	protectedV1.GET("/statistics/games/oldest-played", func(c *echo.Context) error {
		return statistics.GetOldestPlayedGames(c)
	})
	protectedV1.GET("/statistics/songs/most-played", func(c *echo.Context) error {
		return statistics.GetMostPlayedSongs(c)
	})
	protectedV1.GET("/statistics/songs/least-played", func(c *echo.Context) error {
		return statistics.GetLeastPlayedSongs(c)
	})
	protectedV1.GET("/statistics/summary", func(c *echo.Context) error {
		return statistics.GetStatisticsSummary(c)
	})

	// Future: VGMQ endpoints will be added to protectedV1 group
	_ = protectedV1 // Use the variable to avoid unused variable error

	routes := e.Router().Routes()
	sort.Slice(routes, func(i, j int) bool {
		return routes[i].Path < routes[j].Path
	})
	for _, r := range routes {
		if (r.Method == "GET" || r.Method == "POST" || r.Method == "PUT" || r.Method == "DELETE") && !strings.Contains(r.Name, "github") {
			logging.GetLogger().Debug("Registered route", zap.String("method", r.Method), zap.String("path", r.Path))
		}
	}
	return e
}