// Enhanced example of using the DubAPI library with AI integration
const DubAPI = require('./index.js');
const AIHandler = require('./ai-handler.js');
const MemoryHandler = require('./memory-handler.js');

console.log('Starting DubAPI example...');

// Replace with your queup.net credentials
const username = 'Jiwon';
const password = 'cookTV12';

// Replace with the room you want to connect to
const roomName = 'classical-music_171599336015945'; 

// Bot configuration
const config = {
    commandPrefix: '!',  // Prefix for commands
    autoReconnect: true,  // Automatically reconnect on disconnection
    reconnectInterval: 15000,  // Time in ms to wait before reconnecting
    greetUsers: true,     // Whether to greet users when they join
    autoUpvote: true,     // Whether to automatically upvote songs
    botName: 'Jiwon',     // Bot's name for mention detection
    respondToMentions: true, // Whether to respond when mentioned
    useAI: true,          // Whether to use AI responses
    geminiAPIKeys: [      // Multiple Gemini API keys that will be used in rotation
        'AIzaSyAQAw_EZv1kX_l24ViMGnPYGC3ExbIZFCU', 'AIzaSyCXBuz5GCChcPiff9MFtfb6tCspytAKukQ', 'AIzaSyDtntYvtVZ1huXt65sEE-Pj1UDxLFZom2w'  // First API key
        // Add more API keys here, separated by commas
    ]
};

console.log('Attempting to create DubAPI instance with username:', username);
console.log('Connecting to room:', roomName);

// Initialize memory handler
let memoryHandler = new MemoryHandler({
    maxMessagesPerUser: 10,    // Remember last 10 messages per user
    maxMemoryAge: 30 * 60 * 1000  // Remember messages for 30 minutes
});

// Initialize AI handler if enabled
let aiHandler = null;
if (config.useAI && config.geminiAPIKeys && config.geminiAPIKeys.length > 0) {
    aiHandler = new AIHandler(config.geminiAPIKeys, memoryHandler);
    console.log('AI handler initialized with Gemini API and conversation memory');
}

new DubAPI({username: username, password: password}, function(err, bot) {
    if (err) return console.error('Error connecting:', err);

    console.log('Running DubAPI v' + bot.version);

    // ========== Utility Functions ==========
    
    // Format time in seconds to mm:ss
    function formatTime(seconds) {
        const mins = Math.floor(seconds / 60);
        const secs = Math.floor(seconds % 60);
        return `${mins}:${secs < 10 ? '0' + secs : secs}`;
    }
    
    // Check if user has staff permissions
    function isStaff(user) {
        return user && bot.isStaff(user);
    }
    
    // ========== Command Handler ==========
    
    // Handle chat commands
    function handleCommand(data) {
        // Ignore if not a command
        if (!data.message.startsWith(config.commandPrefix)) return;
        
        // Parse command and arguments
        const args = data.message.slice(config.commandPrefix.length).trim().split(/\s+/);
        const command = args.shift().toLowerCase();
        
        // Get user who sent the command
        const user = bot.getUser(data.user.id);
        
        switch (command) {
            case 'ping':
                bot.sendChat('Pong! 🏓');
                break;
                
            case 'memory':
                if (memoryHandler) {
                    const stats = memoryHandler.getStats();
                    const now = Date.now();
                    const oldestTime = stats.oldestMessage ? new Date(stats.oldestMessage).toISOString().substring(11, 19) : 'none';
                    
                    bot.sendChat(`Memory stats: ${stats.userCount} users, ${stats.totalMessages} messages, oldest from ${oldestTime}`);
                    
                    if (args[0] === 'clear' && isStaff(user)) {
                        // Only staff can clear memory
                        memoryHandler.memories.clear();
                        bot.sendChat('Memory cleared by ' + user.username);
                    }
                } else {
                    bot.sendChat('Memory system is not active.');
                }
                break;
                
            case 'info':
                const currentMedia = bot.getMedia();
                if (currentMedia) {
                    bot.sendChat(`Current track: ${currentMedia.name} by ${currentMedia.artist || 'Unknown'}`);
                } else {
                    bot.sendChat('No track is currently playing.');
                }
                break;
                
            case 'time':
                const remaining = bot.getTimeRemaining();
                const elapsed = bot.getTimeElapsed();
                if (remaining >= 0) {
                    bot.sendChat(`Time remaining: ${formatTime(remaining)} | Elapsed: ${formatTime(elapsed)}`);
                } else {
                    bot.sendChat('No track is currently playing.');
                }
                break;
                
            case 'skip':
                if (isStaff(user) && bot.hasPermission(user, 'skip')) {
                    bot.moderateSkip(function(err) {
                        if (err) return console.error('Error skipping track:', err);
                        bot.sendChat('Track skipped by ' + user.username);
                    });
                } else {
                    bot.sendChat('You need to be staff with skip permission to use this command.');
                }
                break;
                
            case 'users':
                const users = bot.getUsers();
                bot.sendChat(`There are ${users.length} users in the room.`);
                break;
                
            case 'staff':
                const staff = bot.getStaff();
                bot.sendChat(`There are ${staff.length} staff members in the room.`);
                break;
                
            case 'help':
                bot.sendChat('Available commands: !ping, !info, !time, !users, !staff, !help');
                break;
                
            default:
                // Unknown command
                break;
        }
    }

    // ========== Connection Functions ==========
    
    function connect() {
        console.log('Attempting to connect to room:', roomName);
        bot.connect(roomName);
    }

    // ========== Event Listeners ==========
    
    bot.on('connected', function(name) {
        console.log('Connected to ' + name);
        console.log('Bot is ready to respond to commands. Use ' + config.commandPrefix + 'help for available commands');
    });

    bot.on('disconnected', function(name) {
        console.log('Disconnected from ' + name);
        
        if (config.autoReconnect) {
            console.log(`Attempting to reconnect in ${config.reconnectInterval / 1000} seconds...`);
            setTimeout(connect, config.reconnectInterval);
        }
    });

    bot.on('error', function(err) {
        console.error('Error:', err);
    });

    // Chat message handler
    bot.on(bot.events.chatMessage, function(data) {
        console.log(data.user.username + ': ' + data.message);
        
        // Store all messages in memory for context (except bot's own messages)
        if (data.user.username !== config.botName && memoryHandler) {
            memoryHandler.addMessage(data.user.username, data.message, false);
        }
        
        // Handle commands
        handleCommand(data);
        
        // Handle mentions (when bot is called by name)
        if (config.respondToMentions && data.user.username !== config.botName) {
            // Use simple string methods instead of regex for more reliable detection
            const message = data.message;
            const lowerMessage = message.toLowerCase();
            const botName = config.botName.toLowerCase();
            
            // Check for mentions in several ways
            const isMentioned = 
                lowerMessage.includes('@' + botName) || // @kuber
                lowerMessage.startsWith(botName) || // starts with kuber
                lowerMessage.includes(' ' + botName + ' ') || // kuber with spaces around
                lowerMessage.endsWith(' ' + botName); // ends with kuber
                
            console.log('Checking for mentions in message:', message, 'Mentioned:', isMentioned);
            
            // Check if bot is mentioned
            if (isMentioned) {
                console.log(`Bot was mentioned by ${data.user.username}`);
                
                // Get the user message without the bot's name for cleaner AI input
                let userMessage = data.message;
                const botNamePattern = new RegExp(`@?${config.botName}`, 'gi');
                userMessage = userMessage.replace(botNamePattern, '').trim();
                
                // Special case handling for specific commands
                if (userMessage.toLowerCase().includes('what') && 
                    (userMessage.toLowerCase().includes('song') || 
                     userMessage.toLowerCase().includes('track') || 
                     userMessage.toLowerCase().includes('playing'))) {
                    
                    // Get current song info directly
                    const currentMedia = bot.getMedia();
                    if (currentMedia) {
                        const response = `@${data.user.username}, we're listening to ${currentMedia.name} by ${currentMedia.artist || 'Unknown'}.`;
                        return bot.sendChat(response);
                    }
                }
                
                if (userMessage.toLowerCase() === 'help' || userMessage.toLowerCase() === '?') {
                    const response = `@${data.user.username}, try using ${config.commandPrefix}help to see my commands.`;
                    return bot.sendChat(response);
                }
                
                // Handle response based on whether AI is enabled
                if (config.useAI && aiHandler) {
                    // Call AI for response with username for context
                    console.log(`Sending to AI: ${userMessage} (from: ${data.user.username})`);
                    aiHandler.getAIResponse(userMessage, data.user.username)
                        .then(aiResponse => {
                            // Log the full response for debugging
                            console.log(`===== FULL AI RESPONSE (${aiResponse.length} chars) ====`);
                            console.log(aiResponse);
                            console.log(`===== END OF FULL AI RESPONSE ====`);
                            
                            // Split the message into larger chunks for output
                            const maxLength = 250; // Increased from 160 to 250 characters per chunk
                            const chunks = [];
                            
                            // Mention the user in the first chunk only
                            let firstChunk = `@${data.user.username}, `;
                            
                            // Simplified chunking algorithm that focuses on reliability
                            // Just split the text into chunks of maxLength characters, trying to split on word boundaries
                            
                            // First chunk gets the user mention
                            let remaining = aiResponse;
                            let isFirst = true;
                            
                            while (remaining.length > 0) {
                                // Calculate how much we can fit in this chunk
                                const limit = isFirst ? (maxLength - firstChunk.length) : maxLength;
                                let splitAt = Math.min(remaining.length, limit);
                                
                                // If we need to split, try to do it at a word boundary
                                if (remaining.length > limit) {
                                    // Look for the last space within our limit
                                    const lastSpace = remaining.substring(0, limit).lastIndexOf(' ');
                                    if (lastSpace > limit / 2) { // Only use space if it's reasonably positioned
                                        splitAt = lastSpace + 1; // Include the space
                                    }
                                }
                                
                                // Extract this chunk of text
                                const part = remaining.substring(0, splitAt).trim();
                                
                                // Add to chunks array with user mention if it's the first chunk
                                if (part.length > 0) {
                                    chunks.push(isFirst ? (firstChunk + part) : part);
                                }
                                
                                // Move to next section of text
                                remaining = remaining.substring(splitAt).trim();
                                isFirst = false;
                            }
                            
                            // Send all chunks with a delay between them
                            console.log(`Sending response in ${chunks.length} chunks`);
                            let sentCount = 0;
                            
                            function sendNextChunk() {
                                if (sentCount < chunks.length) {
                                    const chunk = chunks[sentCount];
                                    console.log(`Sending chunk ${sentCount + 1}/${chunks.length}: ${chunk.length} chars`);
                                    bot.sendChat(chunk);
                                    sentCount++;
                                    
                                    if (sentCount < chunks.length) {
                                        // Schedule next chunk with a delay
                                        setTimeout(sendNextChunk, 800);
                                    } else {
                                        // All chunks sent, store in memory
                                        if (memoryHandler) {
                                            memoryHandler.addMessage(data.user.username, aiResponse, true);
                                        }
                                        console.log('All chunks sent successfully');
                                    }
                                }
                            }
                            
                            // Start sending chunks
                            sendNextChunk();
                        })
                        .catch(err => {
                            console.error('AI Response Error:', err);
                            bot.sendChat(`@${data.user.username}, sorry, my AI brain is having trouble right now. Try again later?`);
                        });
                } else {
                    // Fallback to pre-defined responses when AI is disabled
                    const responses = [
                        `Yes, @${data.user.username}? How can I help you?`,
                        `I'm here, @${data.user.username}! Need something?`,
                        `Hey @${data.user.username}, what's up?`,
                        `@${data.user.username}, at your service! Try ${config.commandPrefix}help for commands.`
                    ];
                    const response = responses[Math.floor(Math.random() * responses.length)];
                    
                    // Send the response with a small delay to seem more natural
                    setTimeout(() => {
                        bot.sendChat(response);
                    }, 1000 + Math.random() * 1000); // Random delay between 1-2 seconds
                }
            }
        }
    });

    // User join handler
    bot.on(bot.events.userJoin, function(data) {
        console.log(`${data.user.username} joined the room`);
    });

    // User leave handler
    bot.on(bot.events.userLeave, function(data) {
        console.log(`${data.user.username} left the room`);
    });

    // Song change handler
    bot.on(bot.events.roomPlaylistUpdate, function(data) {
        if (!data.media) return;
        
        console.log(`Now playing: ${data.media.name} by ${data.media.artist || 'Unknown'}`);
        
        // Auto upvote songs if enabled
        if (config.autoUpvote) {
            setTimeout(() => {
                bot.downdub(function(err) {
                    if (err) console.error('Error upvoting:', err);
                    else console.log('Auto-upvoted current song');
                });
            }, 5000); // Wait 5 seconds before upvoting
        }
    });

    // Connect to the room
    connect();
});