import { EventEmitter } from 'events';

/**
 * Voice & Augmented Reality Manager for ZAI Platform
 * Next-generation interfaces with voice commands and AR data visualization
 */
export class VoiceARManager extends EventEmitter {
  constructor() {
    super();
    
    this.voiceCommands = new Map();
    this.arSessions = new Map();
    this.speechRecognition = null;
    this.speechSynthesis = null;
    this.arRenderer = null;
    
    // Voice command configuration
    this.voiceConfig = {
      language: 'en-US',
      continuous: true,
      interimResults: true,
      maxAlternatives: 3,
      confidenceThreshold: 0.7,
      wakeWord: 'hey zai'
    };
    
    // AR configuration
    this.arConfig = {
      trackingMode: 'world',
      renderQuality: 'high',
      maxObjects: 100,
      frameRate: 60,
      lightEstimation: true,
      planeDetection: true
    };
    
    this.initializeVoiceCommands();
    this.initializeARCapabilities();
    
    console.log('🎤🥽 Voice & AR Manager initialized');
  }

  /**
   * Initialize voice command system
   */
  initializeVoiceCommands() {
    // Register platform management commands
    this.registerVoiceCommand('show dashboard', this.showDashboard.bind(this));
    this.registerVoiceCommand('show analytics', this.showAnalytics.bind(this));
    this.registerVoiceCommand('show licenses', this.showLicenses.bind(this));
    this.registerVoiceCommand('generate license', this.generateLicense.bind(this));
    this.registerVoiceCommand('show revenue', this.showRevenue.bind(this));
    this.registerVoiceCommand('show users', this.showUsers.bind(this));
    this.registerVoiceCommand('security status', this.showSecurityStatus.bind(this));
    this.registerVoiceCommand('system health', this.showSystemHealth.bind(this));
    
    // Register AR visualization commands
    this.registerVoiceCommand('show in ar', this.showInAR.bind(this));
    this.registerVoiceCommand('ar dashboard', this.showARDashboard.bind(this));
    this.registerVoiceCommand('ar analytics', this.showARAnalytics.bind(this));
    this.registerVoiceCommand('ar revenue chart', this.showARRevenueChart.bind(this));
    this.registerVoiceCommand('ar user map', this.showARUserMap.bind(this));
    
    // Register conversation commands
    this.registerVoiceCommand('start conversation', this.startVoiceConversation.bind(this));
    this.registerVoiceCommand('end conversation', this.endVoiceConversation.bind(this));
    this.registerVoiceCommand('summarize conversation', this.summarizeConversation.bind(this));
    
    console.log('🎤 Voice commands initialized');
  }

  /**
   * Initialize AR capabilities
   */
  initializeARCapabilities() {
    // AR visualization templates
    this.arTemplates = {
      dashboard: {
        type: '3d_dashboard',
        layout: 'floating_panels',
        animations: true,
        interactions: ['tap', 'gesture', 'voice']
      },
      analytics: {
        type: '3d_charts',
        layout: 'circular_arrangement',
        animations: true,
        interactions: ['rotate', 'zoom', 'filter']
      },
      revenue: {
        type: 'holographic_chart',
        layout: 'timeline_3d',
        animations: true,
        interactions: ['timeline_scrub', 'drill_down']
      },
      users: {
        type: 'world_map_3d',
        layout: 'globe_projection',
        animations: true,
        interactions: ['zoom', 'filter', 'select']
      }
    };
    
    console.log('🥽 AR capabilities initialized');
  }

  /**
   * Start voice recognition
   */
  async startVoiceRecognition() {
    try {
      if (!('webkitSpeechRecognition' in window) && !('SpeechRecognition' in window)) {
        throw new Error('Speech recognition not supported');
      }
      
      const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
      this.speechRecognition = new SpeechRecognition();
      
      this.speechRecognition.continuous = this.voiceConfig.continuous;
      this.speechRecognition.interimResults = this.voiceConfig.interimResults;
      this.speechRecognition.lang = this.voiceConfig.language;
      this.speechRecognition.maxAlternatives = this.voiceConfig.maxAlternatives;
      
      this.speechRecognition.onstart = () => {
        console.log('🎤 Voice recognition started');
        this.emit('voiceRecognitionStarted');
      };
      
      this.speechRecognition.onresult = (event) => {
        this.handleVoiceResult(event);
      };
      
      this.speechRecognition.onerror = (event) => {
        console.error('🎤 Voice recognition error:', event.error);
        this.emit('voiceRecognitionError', event.error);
      };
      
      this.speechRecognition.onend = () => {
        console.log('🎤 Voice recognition ended');
        this.emit('voiceRecognitionEnded');
        
        // Auto-restart if continuous mode
        if (this.voiceConfig.continuous) {
          setTimeout(() => this.speechRecognition.start(), 1000);
        }
      };
      
      this.speechRecognition.start();
      
    } catch (error) {
      console.error('❌ Failed to start voice recognition:', error.message);
      throw error;
    }
  }

  /**
   * Handle voice recognition results
   */
  handleVoiceResult(event) {
    const results = Array.from(event.results);
    const latestResult = results[results.length - 1];
    
    if (latestResult.isFinal) {
      const transcript = latestResult[0].transcript.toLowerCase().trim();
      const confidence = latestResult[0].confidence;
      
      console.log(`🎤 Voice input: "${transcript}" (confidence: ${confidence})`);
      
      if (confidence >= this.voiceConfig.confidenceThreshold) {
        this.processVoiceCommand(transcript);
      } else {
        this.speak('Sorry, I didn\'t understand that clearly. Could you repeat?');
      }
    }
  }

  /**
   * Process voice command
   */
  async processVoiceCommand(transcript) {
    // Check for wake word
    if (!transcript.includes(this.voiceConfig.wakeWord) && this.voiceConfig.wakeWord !== '') {
      return; // Ignore commands without wake word
    }
    
    // Remove wake word from transcript
    const command = transcript.replace(this.voiceConfig.wakeWord, '').trim();
    
    // Find matching command
    let matchedCommand = null;
    let bestMatch = 0;
    
    for (const [commandText, handler] of this.voiceCommands.entries()) {
      const similarity = this.calculateSimilarity(command, commandText);
      if (similarity > bestMatch && similarity > 0.7) {
        bestMatch = similarity;
        matchedCommand = { text: commandText, handler };
      }
    }
    
    if (matchedCommand) {
      console.log(`🎤 Executing command: ${matchedCommand.text}`);
      this.speak(`Executing ${matchedCommand.text}`);
      
      try {
        await matchedCommand.handler(command);
        this.emit('voiceCommandExecuted', { command: matchedCommand.text, success: true });
      } catch (error) {
        console.error('❌ Voice command execution failed:', error.message);
        this.speak('Sorry, I encountered an error executing that command.');
        this.emit('voiceCommandExecuted', { command: matchedCommand.text, success: false, error: error.message });
      }
    } else {
      console.log(`🎤 Unknown command: ${command}`);
      this.speak('I don\'t recognize that command. Try saying "help" for available commands.');
    }
  }

  /**
   * Text-to-speech synthesis
   */
  speak(text, options = {}) {
    if (!('speechSynthesis' in window)) {
      console.warn('Speech synthesis not supported');
      return;
    }
    
    const utterance = new SpeechSynthesisUtterance(text);
    utterance.lang = options.lang || this.voiceConfig.language;
    utterance.rate = options.rate || 1.0;
    utterance.pitch = options.pitch || 1.0;
    utterance.volume = options.volume || 1.0;
    
    utterance.onstart = () => {
      console.log(`🔊 Speaking: "${text}"`);
      this.emit('speechStarted', text);
    };
    
    utterance.onend = () => {
      this.emit('speechEnded', text);
    };
    
    utterance.onerror = (event) => {
      console.error('🔊 Speech synthesis error:', event.error);
      this.emit('speechError', event.error);
    };
    
    window.speechSynthesis.speak(utterance);
  }

  /**
   * Start AR session
   */
  async startARSession(sessionConfig = {}) {
    const sessionId = this.generateSessionId();
    
    const arSession = {
      id: sessionId,
      startTime: Date.now(),
      config: { ...this.arConfig, ...sessionConfig },
      objects: new Map(),
      interactions: [],
      status: 'ACTIVE'
    };
    
    try {
      // Initialize AR context (WebXR)
      if ('xr' in navigator) {
        const xrSession = await navigator.xr.requestSession('immersive-ar', {
          requiredFeatures: ['local', 'hit-test'],
          optionalFeatures: ['dom-overlay', 'light-estimation']
        });
        
        arSession.xrSession = xrSession;
        
        xrSession.addEventListener('end', () => {
          this.endARSession(sessionId);
        });
        
        console.log(`🥽 AR session started: ${sessionId}`);
        this.emit('arSessionStarted', arSession);
        
      } else {
        // Fallback to WebGL-based AR simulation
        arSession.fallbackMode = true;
        console.log(`🥽 AR session started in fallback mode: ${sessionId}`);
      }
      
      this.arSessions.set(sessionId, arSession);
      return arSession;
      
    } catch (error) {
      console.error('❌ Failed to start AR session:', error.message);
      throw error;
    }
  }

  /**
   * Render AR dashboard
   */
  async renderARDashboard(sessionId, dashboardData) {
    const session = this.arSessions.get(sessionId);
    if (!session) {
      throw new Error('AR session not found');
    }
    
    const arDashboard = {
      id: 'ar_dashboard',
      type: 'floating_panels',
      position: { x: 0, y: 1.5, z: -2 },
      rotation: { x: 0, y: 0, z: 0 },
      scale: { x: 1, y: 1, z: 1 },
      panels: [
        {
          id: 'revenue_panel',
          title: 'Revenue Overview',
          position: { x: -1, y: 0, z: 0 },
          size: { width: 0.8, height: 0.6 },
          content: this.generateRevenueVisualization(dashboardData.revenue)
        },
        {
          id: 'users_panel',
          title: 'User Analytics',
          position: { x: 0, y: 0, z: 0 },
          size: { width: 0.8, height: 0.6 },
          content: this.generateUserVisualization(dashboardData.users)
        },
        {
          id: 'licenses_panel',
          title: 'License Status',
          position: { x: 1, y: 0, z: 0 },
          size: { width: 0.8, height: 0.6 },
          content: this.generateLicenseVisualization(dashboardData.licenses)
        }
      ],
      interactions: {
        voice: true,
        gesture: true,
        gaze: true
      }
    };
    
    session.objects.set('dashboard', arDashboard);
    
    console.log(`🥽 AR dashboard rendered in session ${sessionId}`);
    this.emit('arObjectRendered', { sessionId, objectId: 'dashboard', object: arDashboard });
    
    return arDashboard;
  }

  /**
   * Voice command handlers
   */
  async showDashboard() {
    this.speak('Showing dashboard');
    this.emit('showDashboard');
  }
  
  async showAnalytics() {
    this.speak('Displaying analytics');
    this.emit('showAnalytics');
  }
  
  async showLicenses() {
    this.speak('Showing license information');
    this.emit('showLicenses');
  }
  
  async generateLicense() {
    this.speak('Opening license generation form');
    this.emit('generateLicense');
  }
  
  async showRevenue() {
    this.speak('Displaying revenue data');
    this.emit('showRevenue');
  }
  
  async showUsers() {
    this.speak('Showing user statistics');
    this.emit('showUsers');
  }
  
  async showSecurityStatus() {
    this.speak('Displaying security status');
    this.emit('showSecurityStatus');
  }
  
  async showSystemHealth() {
    this.speak('Showing system health metrics');
    this.emit('showSystemHealth');
  }
  
  async showInAR() {
    this.speak('Switching to augmented reality view');
    const session = await this.startARSession();
    this.emit('showInAR', session);
  }
  
  async showARDashboard() {
    this.speak('Rendering AR dashboard');
    // Get current dashboard data
    const dashboardData = await this.getDashboardData();
    const session = Array.from(this.arSessions.values())[0];
    if (session) {
      await this.renderARDashboard(session.id, dashboardData);
    }
  }
  
  async showARAnalytics() {
    this.speak('Displaying analytics in AR');
    this.emit('showARAnalytics');
  }
  
  async showARRevenueChart() {
    this.speak('Showing revenue chart in AR');
    this.emit('showARRevenueChart');
  }
  
  async showARUserMap() {
    this.speak('Displaying user map in AR');
    this.emit('showARUserMap');
  }
  
  async startVoiceConversation() {
    this.speak('Starting voice conversation mode');
    this.emit('startVoiceConversation');
  }
  
  async endVoiceConversation() {
    this.speak('Ending voice conversation');
    this.emit('endVoiceConversation');
  }
  
  async summarizeConversation() {
    this.speak('Generating conversation summary');
    this.emit('summarizeConversation');
  }

  /**
   * Utility methods
   */
  registerVoiceCommand(command, handler) {
    this.voiceCommands.set(command.toLowerCase(), handler);
  }
  
  calculateSimilarity(str1, str2) {
    // Simple similarity calculation (Levenshtein distance)
    const matrix = [];
    const len1 = str1.length;
    const len2 = str2.length;
    
    for (let i = 0; i <= len2; i++) {
      matrix[i] = [i];
    }
    
    for (let j = 0; j <= len1; j++) {
      matrix[0][j] = j;
    }
    
    for (let i = 1; i <= len2; i++) {
      for (let j = 1; j <= len1; j++) {
        if (str2.charAt(i - 1) === str1.charAt(j - 1)) {
          matrix[i][j] = matrix[i - 1][j - 1];
        } else {
          matrix[i][j] = Math.min(
            matrix[i - 1][j - 1] + 1,
            matrix[i][j - 1] + 1,
            matrix[i - 1][j] + 1
          );
        }
      }
    }
    
    const maxLen = Math.max(len1, len2);
    return (maxLen - matrix[len2][len1]) / maxLen;
  }
  
  generateSessionId() {
    return 'AR_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);
  }
  
  generateRevenueVisualization(revenueData) {
    return {
      type: '3d_bar_chart',
      data: revenueData,
      animation: 'grow_from_bottom',
      colors: ['#3b82f6', '#10b981', '#f59e0b', '#8b5cf6']
    };
  }
  
  generateUserVisualization(userData) {
    return {
      type: '3d_pie_chart',
      data: userData,
      animation: 'rotate_and_expand',
      colors: ['#ef4444', '#f97316', '#eab308', '#22c55e']
    };
  }
  
  generateLicenseVisualization(licenseData) {
    return {
      type: '3d_timeline',
      data: licenseData,
      animation: 'slide_in_sequence',
      colors: ['#06b6d4', '#8b5cf6', '#ec4899', '#f59e0b']
    };
  }
  
  async getDashboardData() {
    // Simplified dashboard data
    return {
      revenue: { total: 5000, monthly: 1200, growth: 15 },
      users: { total: 250, active: 180, new: 25 },
      licenses: { total: 150, active: 140, expired: 10 }
    };
  }
  
  endARSession(sessionId) {
    const session = this.arSessions.get(sessionId);
    if (session) {
      session.status = 'ENDED';
      session.endTime = Date.now();
      console.log(`🥽 AR session ended: ${sessionId}`);
      this.emit('arSessionEnded', session);
    }
  }
  
  /**
   * Get voice & AR statistics
   */
  getVoiceARStats() {
    return {
      voiceCommands: {
        total: this.voiceCommands.size,
        registered: Array.from(this.voiceCommands.keys())
      },
      arSessions: {
        total: this.arSessions.size,
        active: Array.from(this.arSessions.values()).filter(s => s.status === 'ACTIVE').length
      },
      capabilities: {
        voiceRecognition: 'webkitSpeechRecognition' in window || 'SpeechRecognition' in window,
        speechSynthesis: 'speechSynthesis' in window,
        webXR: 'xr' in navigator
      }
    };
  }
}
