// server.js
const express = require('express');
const http = require('http');
const socketIo = require('socket.io');
const mineflayer = require('mineflayer');
const path = require('path');

const app = express();
const server = http.createServer(app);
const io = socketIo(server);

// Configuration
const SERVER_HOST = 'dm.progamer.me';
const SERVER_PORT = 40675;
const SERVER_VERSION = '1.21.8';
const BOT_NAMES = ['Alfha_lag', 'Bigboybloom', 'Kitcat'];
const ROTATION_DURATION = 3600; // 1 hour in seconds

// State
let currentBotIndex = 0;
let rotationStartTime = null;
let activeBot = null;
let serverStatus = { online: false, players: '0/0', latency: 0 };
const botStats = {};

// Initialize bot stats
BOT_NAMES.forEach(name => {
    botStats[name] = {
        name,
        status: 'offline',
        deaths: 0,
        reconnects: 0,
        uptime: 0,
        position: { x: 0, y: 0, z: 0 },
        health: 20,
        food: 20,
        isActive: false
    };
});

// Bot creation with circular movement
function createBot(botName) {
    console.log(`🚀 Starting ${botName}...`);
    
    const bot = mineflayer.createBot({
        host: SERVER_HOST,
        port: SERVER_PORT,
        username: botName,
        auth: 'offline',
        version: SERVER_VERSION,
        hideErrors: false,
        checkTimeoutInterval: 30000,
        keepAlive: true
    });

    let circleInterval = null;
    let centerPos = null;
    let angle = 0;

    bot.once('spawn', () => {
        console.log(`✅ ${botName} connected`);
        botStats[botName].status = 'online';
        botStats[botName].uptime = Date.now();
        
        // Start circular movement
        setTimeout(() => {
            if (!bot.entity) return;
            
            centerPos = bot.entity.position.clone();
            
            circleInterval = setInterval(() => {
                if (!bot.entity) return;
                
                try {
                    const radius = 4;
                    angle += 0.03;
                    
                    const targetX = centerPos.x + Math.cos(angle) * radius;
                    const targetZ = centerPos.z + Math.sin(angle) * radius;
                    
                    const dx = targetX - bot.entity.position.x;
                    const dz = targetZ - bot.entity.position.z;
                    const yaw = Math.atan2(-dx, -dz);
                    
                    bot.look(yaw, 0, true);
                    bot.setControlState('forward', true);
                    
                    // Update position
                    botStats[botName].position = {
                        x: Math.floor(bot.entity.position.x),
                        y: Math.floor(bot.entity.position.y),
                        z: Math.floor(bot.entity.position.z)
                    };
                    botStats[botName].health = bot.health || 20;
                    botStats[botName].food = bot.food || 20;
                } catch (err) {
                    console.error(`Movement error for ${botName}:`, err.message);
                }
            }, 100);
        }, 2000);
    });

    bot.on('death', () => {
        console.log(`💀 ${botName} died`);
        botStats[botName].deaths++;
        if (circleInterval) clearInterval(circleInterval);
        centerPos = null;
    });

    bot.on('respawn', () => {
        console.log(`🔄 ${botName} respawned`);
        if (circleInterval) clearInterval(circleInterval);
        centerPos = null;
        angle = 0;
    });

    bot.on('kicked', (reason) => {
        console.log(`⛔ ${botName} kicked: ${reason}`);
        botStats[botName].status = 'offline';
        if (circleInterval) clearInterval(circleInterval);
    });

    bot.on('error', (err) => {
        console.error(`❌ ${botName} error:`, err.message);
    });

    bot.on('end', () => {
        console.log(`🔌 ${botName} disconnected`);
        botStats[botName].status = 'offline';
        if (circleInterval) clearInterval(circleInterval);
        
        // Auto reconnect after 5 seconds if still active
        setTimeout(() => {
            if (activeBot && activeBot.username === botName) {
                console.log(`🔄 Reconnecting ${botName}...`);
                botStats[botName].reconnects++;
                activeBot = createBot(botName);
            }
        }, 5000);
    });

    return bot;
}

// Stop bot
function stopBot(bot) {
    if (!bot) return;
    
    try {
        bot.quit();
        console.log(`⏹️ Stopped ${bot.username}`);
    } catch (err) {
        console.error('Error stopping bot:', err.message);
    }
}

// Rotation manager
function rotationManager() {
    setInterval(() => {
        const currentBot = BOT_NAMES[currentBotIndex];
        const now = Date.now();
        
        if (!rotationStartTime || (now - rotationStartTime) >= (ROTATION_DURATION * 1000)) {
            // Stop current bot
            if (activeBot) {
                stopBot(activeBot);
                botStats[activeBot.username].isActive = false;
            }
            
            // Start new bot
            setTimeout(() => {
                activeBot = createBot(currentBot);
                botStats[currentBot].isActive = true;
                rotationStartTime = Date.now();
                
                console.log(`🔄 Rotation: ${currentBot} is now active`);
                
                // Move to next bot
                currentBotIndex = (currentBotIndex + 1) % BOT_NAMES.length;
            }, 2000);
        }
    }, 5000);
}

// Check server status
async function checkServerStatus() {
    try {
        const net = require('net');
        const client = new net.Socket();
        const startTime = Date.now();
        
        client.setTimeout(5000);
        
        client.connect(SERVER_PORT, SERVER_HOST, () => {
            const latency = Date.now() - startTime;
            serverStatus = {
                online: true,
                latency,
                players: '?/?'
            };
            client.destroy();
        });
        
        client.on('error', () => {
            serverStatus = { online: false, latency: 0, players: '0/0' };
            client.destroy();
        });
        
        client.on('timeout', () => {
            serverStatus = { online: false, latency: 0, players: '0/0' };
            client.destroy();
        });
    } catch (err) {
        serverStatus = { online: false, latency: 0, players: '0/0' };
    }
}

// Socket.IO
io.on('connection', (socket) => {
    console.log('📱 Client connected');
    
    const sendUpdate = () => {
        const currentBot = BOT_NAMES[(currentBotIndex - 1 + BOT_NAMES.length) % BOT_NAMES.length];
        const nextBot = BOT_NAMES[currentBotIndex];
        const elapsed = rotationStartTime ? Math.floor((Date.now() - rotationStartTime) / 1000) : 0;
        const remaining = Math.max(0, ROTATION_DURATION - elapsed);
        
        // Update uptimes
        Object.keys(botStats).forEach(name => {
            if (botStats[name].status === 'online' && botStats[name].uptime) {
                botStats[name].uptimeSeconds = Math.floor((Date.now() - botStats[name].uptime) / 1000);
            } else {
                botStats[name].uptimeSeconds = 0;
            }
        });
        
        socket.emit('update', {
            server: {
                host: SERVER_HOST,
                port: SERVER_PORT,
                version: SERVER_VERSION,
                status: serverStatus
            },
            rotation: {
                current: currentBot,
                next: nextBot,
                elapsed,
                remaining,
                queue: BOT_NAMES
            },
            bots: Object.values(botStats)
        });
    };
    
    const interval = setInterval(sendUpdate, 1000);
    sendUpdate();
    
    socket.on('forceRotation', () => {
        rotationStartTime = 0;
        socket.emit('rotationForced', true);
    });
    
    socket.on('disconnect', () => {
        clearInterval(interval);
        console.log('📴 Client disconnected');
    });
});

// Serve static files
app.use(express.static(__dirname));
app.get('/', (req, res) => {
    res.sendFile(path.join(__dirname, 'index.html'));
});

// Start server
const PORT = process.env.PORT || 7860;
server.listen(PORT, () => {
    console.log('═══════════════════════════════════════');
    console.log('🎮 MINECRAFT BOT MANAGER');
    console.log('═══════════════════════════════════════');
    console.log(`📡 Server: ${SERVER_HOST}:${SERVER_PORT}`);
    console.log(`🤖 Bots: ${BOT_NAMES.join(', ')}`);
    console.log(`⏱️  Rotation: ${ROTATION_DURATION / 60} minutes`);
    console.log(`🌐 Dashboard: http://localhost:${PORT}`);
    console.log('═══════════════════════════════════════');
});

// Start systems
rotationManager();
setInterval(checkServerStatus, 1000);
checkServerStatus();