const roomController = require("../controller/room");
const gameController = require("../controller/game");
const youtubeService = require('../services/youtubeService');

module.exports = (io) => (socket) => {
    let currentRoomId = null;
    let currentUser = null;
    let phaseTimers = {};

    const clearRoomTimers = (roomId) => {
        if (phaseTimers[roomId]) {
            console.log(`Clearing timer for room ${roomId}`);
            clearTimeout(phaseTimers[roomId]);
            delete phaseTimers[roomId];
        }
    };

    const startPhaseTimer = (roomId) => {
        clearRoomTimers(roomId);
        
        const gameState = gameController.getGameState(roomId);
        if (!gameState) {
            console.error(`Cannot start timer: no game state for room ${roomId}`);
            return;
        }
        
        const timeRemaining = gameController.getTimeRemaining(roomId) * 1000;
        console.log(`Starting ${gameState.phase} phase timer for room ${roomId} with ${timeRemaining}ms`);
        
        phaseTimers[roomId] = setTimeout(() => {
            console.log(`Timer expired for room ${roomId}, advancing phase from ${gameState.phase}`);
            const advanced = gameController.advancePhase(roomId);
            
            if (!advanced) {
                console.log(`Failed to advance phase for room ${roomId}`);
                return;
            }

            if (typeof advanced === 'boolean') {
                handleRoundStart(roomId);
            } else {
                const newPhase = gameController.getGameState(roomId).phase;
                console.log(`Advanced to ${newPhase} phase in room ${roomId}`);
                
                if (newPhase === 'guessing') {
                    handleGuessingPhaseStart(roomId);
                } else if (newPhase === 'results') {
                    handleResultsPhaseStart(roomId);
                }
            }
        }, timeRemaining);
    };

    const handleRoundStart = (roomId) => {
        const roles = gameController.getRoles(roomId);
        const selectedSong = gameController.getSelectedSong(roomId);
        const timeLeft = gameController.getTimeRemaining(roomId);
        const songOptions = gameController.getSongOptions(roomId);
        
        io.to(roomId).emit('roles-assigned', roles);

        Object.entries(roles).forEach(([userId, role]) => {
            if (role === 'composer') {
                io.to(userId).emit('song-selected', selectedSong);
            } else {
                io.to(userId).emit('song-options', { songOptions });
            }
        });
        
        io.to(roomId).emit('round-started', {
            round: gameController.getRoundResults(roomId).round,
            timeRemaining: timeLeft,
            phase: 'composing'
        });
        
        startPhaseTimer(roomId);
    };
    
    const handleGuessingPhaseStart = (roomId) => {
        const gameState = gameController.getGameState(roomId);
        if (!gameState) return;
        
        const roles = gameController.getRoles(roomId);
        const songOptions = gameController.getSongOptions(roomId);
        const timeLeft = gameController.getTimeRemaining(roomId);
        
        console.log(`Starting guessing phase for room ${roomId} with ${Object.keys(roles).length} players`);

        io.to(roomId).emit('phase-changed', { 
            phase: 'guessing',
            timeRemaining: timeLeft,
            message: 'Time to submit your final answer!'
        });

        Object.entries(roles).forEach(([userId, role]) => {
            if (role === 'guesser') {
                io.to(userId).emit('guessing-phase-started', {
                    timeRemaining: timeLeft,
                    songOptions
                });
            }
        });

        startPhaseTimer(roomId);
    };
    
    const handleResultsPhaseStart = (roomId) => {
        const results = gameController.getRoundResults(roomId);
        io.to(roomId).emit('round-results', results);
    };

    socket.on("disconnect", () => {
        const roomId = roomController.getUserRoom(socket.id);
        if (roomId) {
            socket.to(roomId).emit("user-disconnected", socket.id);
            roomController.disconnectUser(socket.id);
        }
    });

    socket.on("join-room", async ({roomId, name}) => {
        if (currentRoomId) return socket.emit("already-in-room", currentRoomId);
        
        roomId = roomId.toString().toUpperCase();

        if (roomController.roomExists(roomId)) {
            if (!roomController.isRoomOpen(roomId)) {
                return socket.emit("room-closed", roomId);
            }
            
            currentUser = {id: socket.id, name: name.toString()};
            await roomController.connectUserToRoom(roomId, currentUser);
            socket.join(roomId);

            const users = roomController.getRoomUsers(roomId);
            const votes = roomController.getPlaylistVotes(roomId);
            const availablePlaylists = roomController.getAvailablePlaylists(roomId);

            socket.emit("room-joined", roomId);
            socket.emit("room-users", users);
            socket.emit("playlist-votes-updated", votes);

            try {
                const details = await youtubeService.getPlaylistDetails(availablePlaylists);
                Object.keys(details).forEach(genre => {
                    const playlistId = details[genre].id;
                    details[genre].votes = votes[playlistId]?.length || 0;
                });
                socket.emit("playlist-options", details);
            } catch (error) {
                console.error("Error sending playlist details to new user:", error);
                socket.emit("error", { 
                    message: "Failed to load playlists",
                    details: error.message
                });
            }

            socket.to(roomId).emit("user-connected", currentUser);
            io.to(roomId).emit("room-users-update", users);
            
            currentRoomId = roomId;
        } else {
            socket.emit("room-not-found", roomId);
        }
    });

    socket.on("create-room", ({name}) => {
        if (!name) return socket.emit("room-name-required");
        
        const roomId = Math.random().toString(36).substring(7).toUpperCase();
        currentUser = {id: socket.id, name: name?.toString(), creator: true};
        roomController.connectUserToRoom(roomId, currentUser);
        socket.join(roomId);
        socket.emit("room-created", roomId);
        currentRoomId = roomId;
    });

    socket.on("start-game", async () => {
        const roomId = roomController.getUserRoom(socket.id);
        if (!roomId || !roomController.isUserHost(socket.id)) {
            return socket.emit("not-authorized");
        }
        
        roomController.validateRoomMembers(io, roomId);
        const users = roomController.getRoomUsers(roomId);
        
        if (users.length < 2) {
            return socket.emit("error", { message: "At least 2 players are required" });
        }
        
        if (!roomController.startGame(roomId)) return;
        gameController.initializeGameState(roomId);
        
        try {
            const success = await gameController.startNewRound(roomId);
            if (!success) {
                return socket.emit("error", { message: "Failed to start game - could not load songs" });
            }
            
            io.to(roomId).emit("game-started");
            handleRoundStart(roomId);
        } catch (error) {
            console.error("Error starting game:", error);
            socket.emit("error", { message: "Failed to start game due to an error" });
        }
    });

    socket.on("send-message", (messageData) => {
        const roomId = roomController.getUserRoom(socket.id);
        if (!roomId) return;

        const serverUsername = roomController.getUserName(socket.id);
        
        if (!messageData.sender || messageData.sender === "Player" || messageData.sender === "Anonymous") {
            if (serverUsername) {
                console.log(`Fixing missing username for ${socket.id}: using "${serverUsername}" instead of "${messageData.sender || 'none'}"`);
                messageData.sender = serverUsername;
            } else {
                console.warn(`Could not find username for user ${socket.id}`);
            }
        }
        
        socket.to(roomId).emit("chat-message", messageData);
        
        socket.emit("chat-message-confirmation", {
            ...messageData,
            sender: messageData.sender
        });
    });

    socket.on("get-user-info", () => {
        if (currentUser) socket.emit("user-info", currentUser);
    });

    socket.on("get-room-users", () => {
        const roomId = roomController.getUserRoom(socket.id);
        if (roomId) {
            const users = roomController.getRoomUsers(roomId);
            socket.emit("room-users", users);
        }
    });

    socket.on("check-host-status", () => {
        socket.emit("host-status", { isHost: roomController.isUserHost(socket.id) });
    });

    socket.on("get-room-code", () => {
        if (currentRoomId) socket.emit("room-code", currentRoomId);
    });

    socket.on("submit-frequency", ({ frequency, isPlaying }) => {
        const roomId = roomController.getUserRoom(socket.id);
        if (!roomId) return;
        
        const userRole = gameController.getUserRole(roomId, socket.id);
        if (userRole !== 'composer') return;
        
        if (gameController.updateFrequency(roomId, frequency)) {
            socket.to(roomId).emit("frequency-update", { frequency, isPlaying });
        }
    });
    
    socket.on("submit-guess", ({ songId }) => {
        const roomId = roomController.getUserRoom(socket.id);
        if (!roomId) return;
        
        console.log(`User ${socket.id} submitted guess: Song ID ${songId}`);

        const gamePhase = gameController.getGameState(roomId)?.phase;
        if (gamePhase !== 'guessing') {
            console.log(`Ignoring guess: room ${roomId} is in ${gamePhase} phase, not guessing`);
            return;
        }
        
        const result = gameController.submitGuess(roomId, socket.id, songId);
        if (result) {
            console.log(`Guess result for ${socket.id}:`, result);
            socket.emit("guess-result", result);

            const currentComposer = gameController.getCurrentComposer(roomId);
            if (currentComposer) {
                const guesserName = roomController.getUserName(socket.id) || "Someone";
                io.to(currentComposer).emit("player-guessed", { 
                    guesserName, 
                    isCorrect: result.isCorrect 
                });
            }
        }
    });
    
    socket.on("next-round", async () => {
        const roomId = roomController.getUserRoom(socket.id);
        if (!roomId || !roomController.isUserHost(socket.id)) return;
        
        roomController.validateRoomMembers(io, roomId);
        const users = roomController.getRoomUsers(roomId);
        
        if (users.length < 2) {
            return socket.emit("error", { message: "At least 2 players are required" });
        }
        
        try {
            const success = await gameController.startNewRound(roomId);
            if (success) {
                handleRoundStart(roomId);
            } else {
                socket.emit("error", { message: "Failed to start next round" });
            }
        } catch (error) {
            console.error("Error starting next round:", error);
            socket.emit("error", { message: "Failed to start next round due to an error" });
        }
    });
    
    socket.on("get-current-frequency", () => {
        const roomId = roomController.getUserRoom(socket.id);
        if (roomId) {
            socket.emit("current-frequency", { 
                frequency: gameController.getCurrentFrequency(roomId) 
            });
        }
    });

    socket.on("get-playlist-songs", async () => {
        try {
            const roomId = roomController.getUserRoom(socket.id);
            if (!roomId) {
                throw new Error("User not in a room");
            }
            
            const gameState = gameController.getGameState(roomId);
            const playlistId = gameState?.selectedPlaylist || null;
            
            console.log(`Fetching songs for playlist ${playlistId}`);
            const songs = await youtubeService.fetchPlaylistSongs(playlistId);
            socket.emit("playlist-songs", { songs });
        } catch (error) {
            console.error("Error sending playlist songs:", error);
            socket.emit("playlist-songs", { songs: [] });
        }
    });

    socket.on("get-playlist-options", async () => {
        try {
            const roomId = roomController.getUserRoom(socket.id);
            if (!roomId) {
                throw new Error("User not in a room");
            }

            const availablePlaylists = roomController.getAvailablePlaylists(roomId);
            const details = await youtubeService.getPlaylistDetails(availablePlaylists);
            
            if (Object.keys(details).length === 0) {
                const newPlaylists = await youtubeService.getRandomPlaylists(3);
                const newDetails = await youtubeService.getPlaylistDetails(newPlaylists);

                roomController.updateAvailablePlaylists(roomId, newPlaylists);
                socket.emit("playlist-options", newDetails);
            } else {
                socket.emit("playlist-options", details);
            }
        } catch (error) {
            console.error("Error fetching playlist options:", error);
            socket.emit("error", { 
                message: "Failed to load playlists",
                details: error.message
            });
        }
    });

    socket.on("vote-playlist", ({ playlistId }) => {
        const roomId = roomController.getUserRoom(socket.id);
        if (!roomId) return;
        
        if (roomController.voteForPlaylist(roomId, socket.id, playlistId)) {
            const votes = roomController.getPlaylistVotes(roomId);
            io.to(roomId).emit("playlist-votes-updated", votes);
        }
    });
};