/* Chat Statistics Module */
class ChatStatistics {
    constructor() {
        this.currentData = null;
        this.statsContainer = null;
        this.init();
    }

    init() {
        this.createStatsContainer();
        // Button wird jetzt von statistics-integration.js hinzugefügt
    }

    createStatsContainer() {
        // Create stats container
        const statsHTML = `
            <div class="stats-container" id="statsContainer" style="display: none;">
                <div class="stats-header">
                    <h3>📊 Chat Statistics</h3>
                    <button class="stats-close" id="statsClose">×</button>
                </div>
                <div class="stats-content" id="statsContent">
                    <!-- Statistics will be populated here -->
                </div>
            </div>
            <div class="stats-overlay" id="statsOverlay" style="display: none;"></div>
        `;
        
        document.body.insertAdjacentHTML('beforeend', statsHTML);
        this.statsContainer = document.getElementById('statsContainer');
        
        // Add event listeners
        document.getElementById('statsClose').addEventListener('click', () => this.hideStats());
        document.getElementById('statsOverlay').addEventListener('click', () => this.hideStats());
    }

    analyzeChat(messages) {
        console.log('Analyzing chat with', messages.length, 'messages');
        this.currentData = this.calculateStatistics(messages);
        
        // Trigger custom event that button is ready
        const event = new CustomEvent('statsReady', { detail: this.currentData });
        document.dispatchEvent(event);
    }

    calculateStatistics(messages) {
        const stats = {
            totalMessages: 0,
            chatMessages: 0,
            joinLeaveMessages: 0,
            players: new Map(),
            timeDistribution: new Map(),
            wordCount: new Map(),
            messageLength: []
        };

        messages.forEach(message => {
            stats.totalMessages++;
            
            if (message.type === 'chat') {
                stats.chatMessages++;
                
                // Player statistics
                const player = message.player;
                if (!stats.players.has(player)) {
                    stats.players.set(player, {
                        name: player,
                        role: message.role,
                        messageCount: 0,
                        totalChars: 0,
                        avgMessageLength: 0
                    });
                }
                
                const playerStats = stats.players.get(player);
                playerStats.messageCount++;
                playerStats.totalChars += message.message.length;
                playerStats.avgMessageLength = Math.round(playerStats.totalChars / playerStats.messageCount);
                
                // Time distribution (by hour)
                const hour = message.timestamp.split(':')[0];
                stats.timeDistribution.set(hour, (stats.timeDistribution.get(hour) || 0) + 1);
                
                // Word analysis
                const words = message.message.toLowerCase().match(/\b\w+\b/g) || [];
                words.forEach(word => {
                    if (word.length > 3) { // Only count words longer than 3 characters
                        stats.wordCount.set(word, (stats.wordCount.get(word) || 0) + 1);
                    }
                });
                
                // Message length
                stats.messageLength.push(message.message.length);
                
            } else if (message.type === 'join' || message.type === 'leave') {
                stats.joinLeaveMessages++;
            }
        });

        return stats;
    }

    showStats() {
        if (!this.currentData) return;
        
        this.renderStatistics();
        document.getElementById('statsContainer').style.display = 'block';
        document.getElementById('statsOverlay').style.display = 'block';
        document.body.style.overflow = 'hidden';
    }

    hideStats() {
        document.getElementById('statsContainer').style.display = 'none';
        document.getElementById('statsOverlay').style.display = 'none';
        document.body.style.overflow = 'auto';
    }

    renderStatistics() {
        const data = this.currentData;
        const content = document.getElementById('statsContent');
        
        // Convert Maps to sorted arrays
        const topPlayers = Array.from(data.players.values())
            .sort((a, b) => b.messageCount - a.messageCount)
            .slice(0, 10);
        
        const topWords = Array.from(data.wordCount.entries())
            .sort((a, b) => b[1] - a[1])
            .slice(0, 15);
        
        const timeActivity = Array.from(data.timeDistribution.entries())
            .sort((a, b) => a[0] - b[0]);

        const avgMessageLength = data.messageLength.length > 0 
            ? Math.round(data.messageLength.reduce((a, b) => a + b, 0) / data.messageLength.length)
            : 0;

        content.innerHTML = `
            <div class="stats-grid">
                <div class="stats-card">
                    <h4>📈 Overview</h4>
                    <div class="stats-item">
                        <span class="stats-label">Total Messages:</span>
                        <span class="stats-value">${data.totalMessages.toLocaleString()}</span>
                    </div>
                    <div class="stats-item">
                        <span class="stats-label">Chat Messages:</span>
                        <span class="stats-value">${data.chatMessages.toLocaleString()}</span>
                    </div>
                    <div class="stats-item">
                        <span class="stats-label">Join/Leave Events:</span>
                        <span class="stats-value">${data.joinLeaveMessages.toLocaleString()}</span>
                    </div>
                    <div class="stats-item">
                        <span class="stats-label">Unique Players:</span>
                        <span class="stats-value">${data.players.size}</span>
                    </div>
                    <div class="stats-item">
                        <span class="stats-label">Avg Message Length:</span>
                        <span class="stats-value">${avgMessageLength} chars</span>
                    </div>
                </div>

                <div class="stats-card">
                    <h4>👥 Top Players</h4>
                    <div class="top-list">
                        ${topPlayers.map((player, index) => `
                            <div class="top-item">
                                <span class="rank">${index + 1}.</span>
                                <span class="role-badge ${player.role}">${player.role}</span>
                                <span class="player-name">${player.name}</span>
                                <span class="player-count">${player.messageCount} msg</span>
                            </div>
                        `).join('')}
                    </div>
                </div>

                <div class="stats-card">
                    <h4>🕐 Activity by Hour</h4>
                    <div class="time-chart">
                        ${timeActivity.map(([hour, count]) => {
                            const maxCount = Math.max(...timeActivity.map(([, c]) => c));
                            const percentage = (count / maxCount) * 100;
                            return `
                                <div class="time-bar">
                                    <span class="time-label">${hour}:00</span>
                                    <div class="time-bar-container">
                                        <div class="time-bar-fill" style="width: ${percentage}%"></div>
                                    </div>
                                    <span class="time-count">${count}</span>
                                </div>
                            `;
                        }).join('')}
                    </div>
                </div>

                <div class="stats-card">
                    <h4>💬 Popular Words</h4>
                    <div class="word-cloud">
                        ${topWords.map(([word, count]) => {
                            const maxCount = topWords[0][1];
                            const size = Math.max(0.8, (count / maxCount) * 2);
                            return `
                                <span class="word-item" style="font-size: ${size}em;" title="${count} times">
                                    ${word}
                                </span>
                            `;
                        }).join('')}
                    </div>
                </div>
            </div>
        `;
    }
}

// Initialize statistics module
const chatStats = new ChatStatistics();

// Make it globally available
window.chatStats = chatStats;

console.log('ChatStatistics module loaded and available globally');