// plugins/coinflip.js - Coin Flip Casino game plugin
const fs = require('fs');
const path = require('path');

module.exports = {
    init(bot) {
        console.log('Coin Flip Casino plugin initialized');
        this.bot = bot;
        
        // Persistent player statistics (saved to file)
        this.playerStats = new Map(); // nick -> { totalWins, totalLosses, totalFlips, biggestWin, winStreak, bestStreak, name }
        
        // Set up score file path
        this.scoresFile = path.join(__dirname, 'coinflip_scores.json');
        
        // Load existing scores
        this.loadScores();
    },
    
    cleanup(bot) {
        console.log('Coin Flip Casino plugin cleaned up');
        // Save scores before cleanup
        this.saveScores();
    },
    
    // Load scores from file
    loadScores() {
        try {
            if (fs.existsSync(this.scoresFile)) {
                const data = fs.readFileSync(this.scoresFile, 'utf8');
                const scoresObject = JSON.parse(data);
                
                // Convert back to Map
                this.playerStats = new Map(Object.entries(scoresObject));
                console.log(`🪙 Loaded ${this.playerStats.size} coin flip player stats from ${this.scoresFile}`);
                
                // Log top 3 players if any exist
                if (this.playerStats.size > 0) {
                    const topPlayers = Array.from(this.playerStats.values())
                        .sort((a, b) => b.totalWins - a.totalWins)
                        .slice(0, 3);
                    console.log('🏆 Top coin flippers:', topPlayers.map(p => `${p.name}(${p.totalWins}W)`).join(', '));
                }
            } else {
                console.log(`🪙 No existing coin flip scores file found, starting fresh`);
            }
        } catch (error) {
            console.error(`❌ Error loading coin flip scores:`, error);
            this.playerStats = new Map(); // Reset to empty if load fails
        }
    },
    
    // Save scores to file
    saveScores() {
        try {
            // Convert Map to plain object for JSON serialization
            const scoresObject = Object.fromEntries(this.playerStats);
            const data = JSON.stringify(scoresObject, null, 2);
            
            fs.writeFileSync(this.scoresFile, data, 'utf8');
            console.log(`💾 Saved ${this.playerStats.size} coin flip player stats to ${this.scoresFile}`);
        } catch (error) {
            console.error(`❌ Error saving coin flip scores:`, error);
        }
    },
    
    // Update a player's persistent stats and save to file
    updatePlayerStats(nick, updates) {
        // Ensure playerStats Map exists
        if (!this.playerStats) {
            this.playerStats = new Map();
        }
        
        if (!this.playerStats.has(nick)) {
            this.playerStats.set(nick, {
                totalWins: 0,
                totalLosses: 0,
                totalFlips: 0,
                biggestWin: 0,
                winStreak: 0,
                bestStreak: 0,
                name: nick
            });
        }
        
        const player = this.playerStats.get(nick);
        Object.assign(player, updates);
        
        // Save to file after each update
        this.saveScores();
    },
    
    // Flip the coin and return result
    flipCoin() {
        return Math.random() < 0.5 ? 'heads' : 'tails';
    },
    
    // Calculate win amount based on bet
    calculateWinnings(bet, isWin) {
        if (!isWin) return 0;
        
        // Simple 1:1 payout for coin flip
        return bet;
    },
    
    commands: [
        {
            name: 'flip',
            description: 'Flip a coin and bet on the outcome',
            execute: function(context, bot) {
                const plugin = module.exports;
                const target = context.replyTo;
                const from = context.nick;
                const args = context.args;
                
                // Parse command: !flip <heads/tails> [bet]
                if (args.length === 0) {
                    bot.say(target, `Usage: !flip <heads/tails> [bet] - Example: !flip heads 5`);
                    return;
                }
                
                const guess = args[0].toLowerCase();
                if (guess !== 'heads' && guess !== 'tails') {
                    bot.say(target, `${from}: Choose 'heads' or 'tails'`);
                    return;
                }
                
                // Parse bet amount (default to 1)
                let bet = 1;
                if (args.length > 1) {
                    bet = parseInt(args[1]);
                    if (isNaN(bet) || bet < 1 || bet > 100) {
                        bot.say(target, `${from}: Bet must be between 1 and 100`);
                        return;
                    }
                }
                
                // Initialize player if new
                if (!plugin.playerStats.has(from)) {
                    plugin.updatePlayerStats(from, {
                        totalWins: 0,
                        totalLosses: 0,
                        totalFlips: 0,
                        biggestWin: 0,
                        winStreak: 0,
                        bestStreak: 0,
                        name: from
                    });
                }
                
                // Flip the coin
                const result = plugin.flipCoin();
                const isWin = guess === result;
                const winnings = plugin.calculateWinnings(bet, isWin);
                
                // Update player stats
                const player = plugin.playerStats.get(from);
                const updates = {
                    totalFlips: player.totalFlips + 1
                };
                
                if (isWin) {
                    updates.totalWins = player.totalWins + 1;
                    updates.winStreak = player.winStreak + 1;
                    
                    // Update best streak
                    if (updates.winStreak > player.bestStreak) {
                        updates.bestStreak = updates.winStreak;
                    }
                    
                    // Update biggest win
                    if (winnings > player.biggestWin) {
                        updates.biggestWin = winnings;
                    }
                } else {
                    updates.totalLosses = player.totalLosses + 1;
                    updates.winStreak = 0; // Reset streak on loss
                }
                
                // Choose coin flip animation
                const coinEmojis = ['🪙', '🥇', '💰'];
                const coinEmoji = coinEmojis[Math.floor(Math.random() * coinEmojis.length)];
                
                // Result message with color coding
                let resultEmoji, resultText;
                if (result === 'heads') {
                    resultEmoji = '👑';
                    resultText = 'HEADS';
                } else {
                    resultEmoji = '🦅';
                    resultText = 'TAILS';
                }
                
                // Create result message
                let output = `${coinEmoji} ${from}: ${resultEmoji} ${resultText}! `;
                
                if (isWin) {
                    output += `✅ WIN! +${winnings} pts`;
                    if (updates.winStreak > 1) {
                        output += ` | 🔥 ${updates.winStreak} streak!`;
                    }
                } else {
                    output += `❌ LOSE! -${bet} pts`;
                }
                
                // Add totals
                output += ` | W:${updates.totalWins} L:${updates.totalLosses}`;
                
                bot.say(target, output);
                plugin.updatePlayerStats(from, updates);
            }
        },
        
        {
            name: 'flipstats',
            description: 'Show your coin flip statistics',
            execute: function(context, bot) {
                const plugin = module.exports;
                const target = context.replyTo;
                const from = context.nick;
                
                if (!plugin.playerStats.has(from)) {
                    bot.say(target, `${from}: You haven't flipped any coins yet! Use !flip to start.`);
                    return;
                }
                
                const player = plugin.playerStats.get(from);
                const winRate = player.totalFlips > 0 ? ((player.totalWins / player.totalFlips) * 100).toFixed(1) : 0;
                
                bot.say(target, `🪙 ${from}: ${player.totalWins}W/${player.totalLosses}L (${winRate}%) | Best: ${player.biggestWin} | Streak: ${player.winStreak} (best: ${player.bestStreak}) | Flips: ${player.totalFlips}`);
            }
        },
        
        {
            name: 'topflip',
            description: 'Show top coin flip players',
            execute: function(context, bot) {
                const plugin = module.exports;
                const target = context.replyTo;
                
                if (plugin.playerStats.size === 0) {
                    bot.say(target, 'No coin flip scores recorded yet! Use !flip to start playing.');
                    return;
                }
                
                // Get top players by different metrics
                const byWins = Array.from(plugin.playerStats.values())
                    .sort((a, b) => b.totalWins - a.totalWins)
                    .slice(0, 3);
                
                const byStreak = Array.from(plugin.playerStats.values())
                    .sort((a, b) => b.bestStreak - a.bestStreak)
                    .slice(0, 1);
                
                let output = '🏆 Top Flippers: ';
                byWins.forEach((player, i) => {
                    const trophy = i === 0 ? '🥇' : i === 1 ? '🥈' : '🥉';
                    const winRate = player.totalFlips > 0 ? ((player.totalWins / player.totalFlips) * 100).toFixed(0) : 0;
                    output += `${trophy}${player.name}(${player.totalWins}W/${winRate}%) `;
                });
                
                if (byStreak[0] && byStreak[0].bestStreak > 0) {
                    output += `| 🔥 Best Streak: ${byStreak[0].name}(${byStreak[0].bestStreak})`;
                }
                
                bot.say(target, output);
            }
        },
        
        {
            name: 'fliptest',
            description: 'Test coin fairness with multiple flips',
            execute: function(context, bot) {
                const plugin = module.exports;
                const target = context.replyTo;
                const from = context.nick;
                const args = context.args;
                
                // Parse number of flips (default 10, max 100)
                let numFlips = 10;
                if (args.length > 0) {
                    numFlips = parseInt(args[0]);
                    if (isNaN(numFlips) || numFlips < 1 || numFlips > 100) {
                        bot.say(target, `${from}: Number of flips must be between 1 and 100`);
                        return;
                    }
                }
                
                // Perform multiple flips
                let heads = 0;
                let tails = 0;
                let sequence = '';
                
                for (let i = 0; i < numFlips; i++) {
                    const result = plugin.flipCoin();
                    if (result === 'heads') {
                        heads++;
                        sequence += '👑';
                    } else {
                        tails++;
                        sequence += '🦅';
                    }
                }
                
                const headsPercent = ((heads / numFlips) * 100).toFixed(1);
                const tailsPercent = ((tails / numFlips) * 100).toFixed(1);
                
                bot.say(target, `🪙 ${from}: ${numFlips} flips | 👑 ${heads} (${headsPercent}%) | 🦅 ${tails} (${tailsPercent}%)`);
                bot.say(target, `Sequence: ${sequence}`);
            }
        },
        
        {
            name: 'resetflip',
            description: 'Reset all coin flip scores (admin command)',
            execute: function(context, bot) {
                const plugin = module.exports;
                const target = context.replyTo;
                const from = context.nick;
                
                // Simple admin check
                const adminNicks = ['admin', 'owner', 'cancerbot', 'megasconed'];
                
                if (!adminNicks.includes(from)) {
                    bot.say(target, `${from}: Access denied - admin only command`);
                    return;
                }
                
                const playerCount = plugin.playerStats.size;
                plugin.playerStats.clear();
                plugin.saveScores();
                
                bot.say(target, `🗑️ ${from}: Reset ${playerCount} coin flip player stats`);
            }
        }
    ]
};