Add multi-speaker support for group conversations
Features: - Speaker management system with unique IDs and colors - Visual speaker selection with avatars and color coding - Automatic language detection per speaker - Real-time translation for all speakers' languages - Conversation history with speaker attribution - Export conversation as text file - Persistent speaker data in localStorage UI Components: - Speaker toolbar with add/remove controls - Active speaker indicators - Conversation view with color-coded messages - Settings toggle for multi-speaker mode - Mobile-responsive speaker buttons Technical Implementation: - SpeakerManager class handles all speaker operations - Automatic translation to all active languages - Conversation entries with timestamps - Translation caching per language - Clean separation of original vs translated text - Support for up to 8 concurrent speakers User Experience: - Click to switch active speaker - Visual feedback for active speaker - Conversation flows naturally with colors - Export feature for meeting minutes - Clear conversation history option - Seamless single/multi speaker mode switching This enables group conversations where each participant can speak in their native language and see translations in real-time. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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@ -450,4 +450,110 @@
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/* Smooth text appearance for streaming */
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.streaming-text {
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transition: all 0.1s ease-out;
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}
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/* Multi-speaker styles */
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.speaker-button {
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position: relative;
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padding: 8px 16px;
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border-radius: 20px;
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border: 2px solid;
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background-color: white;
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font-weight: 500;
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transition: all 0.3s ease;
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min-width: 120px;
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}
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.speaker-button.active {
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color: white !important;
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transform: scale(1.05);
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box-shadow: 0 2px 8px rgba(0,0,0,0.2);
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}
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.speaker-avatar {
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display: inline-flex;
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align-items: center;
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justify-content: center;
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width: 30px;
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height: 30px;
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border-radius: 50%;
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background-color: rgba(255,255,255,0.3);
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color: inherit;
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font-weight: bold;
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font-size: 12px;
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margin-right: 8px;
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}
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.speaker-button.active .speaker-avatar {
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background-color: rgba(255,255,255,0.3);
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}
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.conversation-entry {
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margin-bottom: 16px;
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padding: 12px;
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border-radius: 12px;
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background-color: #f8f9fa;
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position: relative;
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animation: slideIn 0.3s ease-out;
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}
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@keyframes slideIn {
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from {
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opacity: 0;
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transform: translateY(10px);
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}
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to {
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opacity: 1;
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transform: translateY(0);
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}
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}
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.conversation-speaker {
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display: flex;
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align-items: center;
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margin-bottom: 8px;
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font-weight: 600;
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}
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.conversation-speaker-avatar {
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display: inline-flex;
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align-items: center;
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justify-content: center;
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width: 25px;
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height: 25px;
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border-radius: 50%;
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color: white;
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font-size: 11px;
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margin-right: 8px;
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}
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.conversation-text {
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margin-left: 33px;
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line-height: 1.5;
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}
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.conversation-time {
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font-size: 0.8rem;
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color: #6c757d;
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margin-left: auto;
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}
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.conversation-translation {
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font-style: italic;
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opacity: 0.9;
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}
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/* Speaker list responsive */
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@media (max-width: 768px) {
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.speaker-button {
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min-width: 100px;
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padding: 6px 12px;
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font-size: 0.9rem;
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}
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.speaker-avatar {
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width: 25px;
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height: 25px;
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font-size: 10px;
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}
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}
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@ -20,6 +20,7 @@ import { ErrorBoundary } from './errorBoundary';
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import { Validator } from './validator';
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import { StreamingTranslation } from './streamingTranslation';
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import { PerformanceMonitor } from './performanceMonitor';
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import { SpeakerManager } from './speakerManager';
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// Initialize error boundary
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const errorBoundary = ErrorBoundary.getInstance();
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@ -145,6 +146,10 @@ function initApp(): void {
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// Performance monitoring
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const performanceMonitor = PerformanceMonitor.getInstance();
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// Speaker management
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const speakerManager = SpeakerManager.getInstance();
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let multiSpeakerEnabled = false;
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// Check TTS server status on page load
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checkTtsServer();
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@ -157,6 +162,141 @@ function initApp(): void {
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// Start health monitoring
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startHealthMonitoring();
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// Initialize multi-speaker mode
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initMultiSpeakerMode();
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// Multi-speaker mode implementation
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function initMultiSpeakerMode(): void {
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const multiSpeakerToggle = document.getElementById('toggleMultiSpeaker') as HTMLButtonElement;
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const multiSpeakerStatus = document.getElementById('multiSpeakerStatus') as HTMLSpanElement;
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const speakerToolbar = document.getElementById('speakerToolbar') as HTMLDivElement;
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const conversationView = document.getElementById('conversationView') as HTMLDivElement;
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const multiSpeakerModeCheckbox = document.getElementById('multiSpeakerMode') as HTMLInputElement;
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// Load saved preference
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multiSpeakerEnabled = localStorage.getItem('multiSpeakerMode') === 'true';
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if (multiSpeakerModeCheckbox) {
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multiSpeakerModeCheckbox.checked = multiSpeakerEnabled;
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}
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// Show/hide multi-speaker UI based on setting
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if (multiSpeakerEnabled) {
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speakerToolbar.style.display = 'block';
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conversationView.style.display = 'block';
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multiSpeakerStatus.textContent = 'ON';
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}
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// Toggle multi-speaker mode
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multiSpeakerToggle?.addEventListener('click', () => {
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multiSpeakerEnabled = !multiSpeakerEnabled;
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multiSpeakerStatus.textContent = multiSpeakerEnabled ? 'ON' : 'OFF';
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if (multiSpeakerEnabled) {
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speakerToolbar.style.display = 'block';
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conversationView.style.display = 'block';
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// Add default speaker if none exist
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if (speakerManager.getAllSpeakers().length === 0) {
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const defaultSpeaker = speakerManager.addSpeaker('Speaker 1', sourceLanguage.value);
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speakerManager.setActiveSpeaker(defaultSpeaker.id);
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updateSpeakerUI();
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}
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} else {
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speakerToolbar.style.display = 'none';
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conversationView.style.display = 'none';
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}
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localStorage.setItem('multiSpeakerMode', multiSpeakerEnabled.toString());
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if (multiSpeakerModeCheckbox) {
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multiSpeakerModeCheckbox.checked = multiSpeakerEnabled;
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}
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});
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// Add speaker button
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document.getElementById('addSpeakerBtn')?.addEventListener('click', () => {
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const name = prompt('Enter speaker name:');
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if (name) {
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const speaker = speakerManager.addSpeaker(name, sourceLanguage.value);
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speakerManager.setActiveSpeaker(speaker.id);
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updateSpeakerUI();
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}
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});
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// Update speaker UI
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function updateSpeakerUI(): void {
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const speakerList = document.getElementById('speakerList') as HTMLDivElement;
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speakerList.innerHTML = '';
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speakerManager.getAllSpeakers().forEach(speaker => {
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const btn = document.createElement('button');
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btn.className = `speaker-button ${speaker.isActive ? 'active' : ''}`;
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btn.style.borderColor = speaker.color;
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btn.style.backgroundColor = speaker.isActive ? speaker.color : 'white';
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btn.style.color = speaker.isActive ? 'white' : speaker.color;
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btn.innerHTML = `
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<span class="speaker-avatar">${speaker.avatar}</span>
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${speaker.name}
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`;
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btn.addEventListener('click', () => {
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speakerManager.setActiveSpeaker(speaker.id);
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updateSpeakerUI();
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});
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speakerList.appendChild(btn);
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});
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}
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// Export conversation
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document.getElementById('exportConversation')?.addEventListener('click', () => {
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const text = speakerManager.exportConversation(targetLanguage.value);
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const blob = new Blob([text], { type: 'text/plain' });
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const url = URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = url;
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a.download = `conversation_${new Date().toISOString()}.txt`;
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a.click();
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URL.revokeObjectURL(url);
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});
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// Clear conversation
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document.getElementById('clearConversation')?.addEventListener('click', () => {
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if (confirm('Clear all conversation history?')) {
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speakerManager.clearConversation();
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updateConversationView();
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}
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});
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// Update conversation view
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function updateConversationView(): void {
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const conversationContent = document.getElementById('conversationContent') as HTMLDivElement;
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const entries = speakerManager.getConversationInLanguage(targetLanguage.value);
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conversationContent.innerHTML = entries.map(entry => `
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<div class="conversation-entry">
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<div class="conversation-speaker">
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<span class="conversation-speaker-avatar" style="background-color: ${entry.speakerColor}">
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${entry.speakerName.substr(0, 2).toUpperCase()}
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</span>
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<span style="color: ${entry.speakerColor}">${entry.speakerName}</span>
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<span class="conversation-time">${new Date(entry.timestamp).toLocaleTimeString()}</span>
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</div>
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<div class="conversation-text ${!entry.isOriginal ? 'conversation-translation' : ''}">
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${Validator.sanitizeHTML(entry.text)}
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</div>
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</div>
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`).join('');
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// Scroll to bottom
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conversationContent.scrollTop = conversationContent.scrollHeight;
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}
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// Store reference to update function for use in transcription
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(window as any).updateConversationView = updateConversationView;
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(window as any).updateSpeakerUI = updateSpeakerUI;
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}
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// Update TTS server URL and API key
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updateTtsServer.addEventListener('click', function() {
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@ -484,6 +624,53 @@ function initApp(): void {
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const sanitizedText = Validator.sanitizeText(data.text);
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currentSourceText = sanitizedText;
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// Handle multi-speaker mode
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if (multiSpeakerEnabled) {
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const activeSpeaker = speakerManager.getActiveSpeaker();
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if (activeSpeaker) {
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const entry = speakerManager.addConversationEntry(
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activeSpeaker.id,
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sanitizedText,
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data.detected_language || sourceLanguage.value
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);
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// Auto-translate for all other speakers' languages
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const allLanguages = new Set(speakerManager.getAllSpeakers().map(s => s.language));
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allLanguages.delete(entry.originalLanguage);
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allLanguages.forEach(async (lang) => {
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try {
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const response = await fetch('/translate', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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text: sanitizedText,
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source_lang: entry.originalLanguage,
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target_lang: lang
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})
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});
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if (response.ok) {
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const result = await response.json();
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if (result.success && result.translation) {
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speakerManager.addTranslation(entry.id, lang, result.translation);
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if ((window as any).updateConversationView) {
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(window as any).updateConversationView();
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}
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}
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}
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} catch (error) {
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console.error(`Failed to translate to ${lang}:`, error);
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}
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});
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// Update conversation view
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if ((window as any).updateConversationView) {
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(window as any).updateConversationView();
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}
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}
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}
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// Handle auto-detected language
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if (data.detected_language && sourceLanguage.value === 'auto') {
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// Update the source language selector
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@ -1277,11 +1464,19 @@ function initNotificationUI(swRegistration: ServiceWorkerRegistration): void {
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const notifyTranslation = (document.getElementById('notifyTranslation') as HTMLInputElement).checked;
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const notifyErrors = (document.getElementById('notifyErrors') as HTMLInputElement).checked;
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const streamingTranslation = (document.getElementById('streamingTranslation') as HTMLInputElement).checked;
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const multiSpeakerMode = (document.getElementById('multiSpeakerMode') as HTMLInputElement).checked;
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localStorage.setItem('notifyTranscription', notifyTranscription.toString());
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localStorage.setItem('notifyTranslation', notifyTranslation.toString());
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localStorage.setItem('notifyErrors', notifyErrors.toString());
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localStorage.setItem('streamingTranslation', streamingTranslation.toString());
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localStorage.setItem('multiSpeakerMode', multiSpeakerMode.toString());
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// Update multi-speaker mode if changed
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const previousMultiSpeakerMode = localStorage.getItem('multiSpeakerMode') === 'true';
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if (multiSpeakerMode !== previousMultiSpeakerMode) {
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window.location.reload(); // Reload to apply changes
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}
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// Show inline success message
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const saveStatus = document.getElementById('settingsSaveStatus') as HTMLDivElement;
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@ -1311,7 +1506,6 @@ function initNotificationUI(swRegistration: ServiceWorkerRegistration): void {
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// Initialize cache management UI
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initCacheManagement();
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}
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async function initCacheManagement(): Promise<void> {
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const cacheCount = document.getElementById('cacheCount') as HTMLSpanElement;
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const cacheSize = document.getElementById('cacheSize') as HTMLSpanElement;
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270
static/js/src/speakerManager.ts
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270
static/js/src/speakerManager.ts
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@ -0,0 +1,270 @@
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// Speaker management for multi-speaker support
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export interface Speaker {
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id: string;
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name: string;
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language: string;
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color: string;
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avatar?: string;
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isActive: boolean;
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lastActiveTime?: number;
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}
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export interface SpeakerTranscription {
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speakerId: string;
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text: string;
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language: string;
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timestamp: number;
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}
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export interface ConversationEntry {
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id: string;
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speakerId: string;
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originalText: string;
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originalLanguage: string;
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translations: Map<string, string>; // languageCode -> translatedText
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timestamp: number;
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audioUrl?: string;
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}
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export class SpeakerManager {
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private static instance: SpeakerManager;
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private speakers: Map<string, Speaker> = new Map();
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private conversation: ConversationEntry[] = [];
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private activeSpeakerId: string | null = null;
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private maxConversationLength = 100;
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// Predefined colors for speakers
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private speakerColors = [
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'#007bff', '#28a745', '#dc3545', '#ffc107',
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'#17a2b8', '#6f42c1', '#e83e8c', '#fd7e14'
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];
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private constructor() {
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this.loadFromLocalStorage();
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}
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static getInstance(): SpeakerManager {
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if (!SpeakerManager.instance) {
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SpeakerManager.instance = new SpeakerManager();
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}
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return SpeakerManager.instance;
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}
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// Add a new speaker
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addSpeaker(name: string, language: string): Speaker {
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const id = this.generateSpeakerId();
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const colorIndex = this.speakers.size % this.speakerColors.length;
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const speaker: Speaker = {
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id,
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name,
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language,
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color: this.speakerColors[colorIndex],
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isActive: false,
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avatar: this.generateAvatar(name)
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};
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this.speakers.set(id, speaker);
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this.saveToLocalStorage();
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return speaker;
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}
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// Update speaker
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updateSpeaker(id: string, updates: Partial<Speaker>): void {
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const speaker = this.speakers.get(id);
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if (speaker) {
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Object.assign(speaker, updates);
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this.saveToLocalStorage();
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}
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}
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// Remove speaker
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removeSpeaker(id: string): void {
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this.speakers.delete(id);
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if (this.activeSpeakerId === id) {
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this.activeSpeakerId = null;
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}
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this.saveToLocalStorage();
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}
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// Get all speakers
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getAllSpeakers(): Speaker[] {
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return Array.from(this.speakers.values());
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}
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// Get speaker by ID
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getSpeaker(id: string): Speaker | undefined {
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return this.speakers.get(id);
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}
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// Set active speaker
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setActiveSpeaker(id: string | null): void {
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// Deactivate all speakers
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this.speakers.forEach(speaker => {
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speaker.isActive = false;
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});
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// Activate selected speaker
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if (id && this.speakers.has(id)) {
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const speaker = this.speakers.get(id)!;
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speaker.isActive = true;
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speaker.lastActiveTime = Date.now();
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this.activeSpeakerId = id;
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} else {
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this.activeSpeakerId = null;
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}
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this.saveToLocalStorage();
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}
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// Get active speaker
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getActiveSpeaker(): Speaker | null {
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return this.activeSpeakerId ? this.speakers.get(this.activeSpeakerId) || null : null;
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}
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// Add conversation entry
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addConversationEntry(
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speakerId: string,
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originalText: string,
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originalLanguage: string
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): ConversationEntry {
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const entry: ConversationEntry = {
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id: this.generateEntryId(),
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speakerId,
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originalText,
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originalLanguage,
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translations: new Map(),
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timestamp: Date.now()
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};
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this.conversation.push(entry);
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// Limit conversation length
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if (this.conversation.length > this.maxConversationLength) {
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||||
this.conversation.shift();
|
||||
}
|
||||
|
||||
this.saveToLocalStorage();
|
||||
return entry;
|
||||
}
|
||||
|
||||
// Add translation to conversation entry
|
||||
addTranslation(entryId: string, language: string, translatedText: string): void {
|
||||
const entry = this.conversation.find(e => e.id === entryId);
|
||||
if (entry) {
|
||||
entry.translations.set(language, translatedText);
|
||||
this.saveToLocalStorage();
|
||||
}
|
||||
}
|
||||
|
||||
// Get conversation for a specific language
|
||||
getConversationInLanguage(language: string): Array<{
|
||||
speakerId: string;
|
||||
speakerName: string;
|
||||
speakerColor: string;
|
||||
text: string;
|
||||
timestamp: number;
|
||||
isOriginal: boolean;
|
||||
}> {
|
||||
return this.conversation.map(entry => {
|
||||
const speaker = this.speakers.get(entry.speakerId);
|
||||
const isOriginal = entry.originalLanguage === language;
|
||||
const text = isOriginal ?
|
||||
entry.originalText :
|
||||
entry.translations.get(language) || `[Translating from ${entry.originalLanguage}...]`;
|
||||
|
||||
return {
|
||||
speakerId: entry.speakerId,
|
||||
speakerName: speaker?.name || 'Unknown',
|
||||
speakerColor: speaker?.color || '#666',
|
||||
text,
|
||||
timestamp: entry.timestamp,
|
||||
isOriginal
|
||||
};
|
||||
});
|
||||
}
|
||||
|
||||
// Get full conversation history
|
||||
getFullConversation(): ConversationEntry[] {
|
||||
return [...this.conversation];
|
||||
}
|
||||
|
||||
// Clear conversation
|
||||
clearConversation(): void {
|
||||
this.conversation = [];
|
||||
this.saveToLocalStorage();
|
||||
}
|
||||
|
||||
// Generate unique speaker ID
|
||||
private generateSpeakerId(): string {
|
||||
return `speaker_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
|
||||
}
|
||||
|
||||
// Generate unique entry ID
|
||||
private generateEntryId(): string {
|
||||
return `entry_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
|
||||
}
|
||||
|
||||
// Generate avatar initials
|
||||
private generateAvatar(name: string): string {
|
||||
const parts = name.trim().split(' ');
|
||||
if (parts.length >= 2) {
|
||||
return parts[0][0].toUpperCase() + parts[1][0].toUpperCase();
|
||||
}
|
||||
return name.substr(0, 2).toUpperCase();
|
||||
}
|
||||
|
||||
// Save to localStorage
|
||||
private saveToLocalStorage(): void {
|
||||
try {
|
||||
const data = {
|
||||
speakers: Array.from(this.speakers.entries()),
|
||||
conversation: this.conversation.map(entry => ({
|
||||
...entry,
|
||||
translations: Array.from(entry.translations.entries())
|
||||
})),
|
||||
activeSpeakerId: this.activeSpeakerId
|
||||
};
|
||||
localStorage.setItem('speakerData', JSON.stringify(data));
|
||||
} catch (error) {
|
||||
console.error('Failed to save speaker data:', error);
|
||||
}
|
||||
}
|
||||
|
||||
// Load from localStorage
|
||||
private loadFromLocalStorage(): void {
|
||||
try {
|
||||
const saved = localStorage.getItem('speakerData');
|
||||
if (saved) {
|
||||
const data = JSON.parse(saved);
|
||||
|
||||
// Restore speakers
|
||||
if (data.speakers) {
|
||||
this.speakers = new Map(data.speakers);
|
||||
}
|
||||
|
||||
// Restore conversation with Map translations
|
||||
if (data.conversation) {
|
||||
this.conversation = data.conversation.map((entry: any) => ({
|
||||
...entry,
|
||||
translations: new Map(entry.translations || [])
|
||||
}));
|
||||
}
|
||||
|
||||
// Restore active speaker
|
||||
this.activeSpeakerId = data.activeSpeakerId || null;
|
||||
}
|
||||
} catch (error) {
|
||||
console.error('Failed to load speaker data:', error);
|
||||
}
|
||||
}
|
||||
|
||||
// Export conversation as text
|
||||
exportConversation(language: string): string {
|
||||
const entries = this.getConversationInLanguage(language);
|
||||
return entries.map(entry =>
|
||||
`[${new Date(entry.timestamp).toLocaleTimeString()}] ${entry.speakerName}: ${entry.text}`
|
||||
).join('\n');
|
||||
}
|
||||
}
|
||||
@ -124,6 +124,25 @@
|
||||
<div class="container">
|
||||
<h1 class="text-center mb-4">Voice Language Translator</h1>
|
||||
<!--<p class="text-center text-muted">Powered by Gemma 3, Whisper & Edge TTS</p>-->
|
||||
|
||||
<!-- Multi-speaker toolbar -->
|
||||
<div id="speakerToolbar" class="card mb-3" style="display: none;">
|
||||
<div class="card-body p-2">
|
||||
<div class="d-flex align-items-center justify-content-between flex-wrap">
|
||||
<div class="d-flex align-items-center gap-2 mb-2 mb-md-0">
|
||||
<button id="addSpeakerBtn" class="btn btn-sm btn-outline-primary">
|
||||
<i class="fas fa-user-plus"></i> Add Speaker
|
||||
</button>
|
||||
<button id="toggleMultiSpeaker" class="btn btn-sm btn-secondary">
|
||||
<i class="fas fa-users"></i> Multi-Speaker: <span id="multiSpeakerStatus">OFF</span>
|
||||
</button>
|
||||
</div>
|
||||
<div id="speakerList" class="d-flex gap-2 flex-wrap">
|
||||
<!-- Speaker buttons will be added here dynamically -->
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="row">
|
||||
<div class="col-md-6 mb-3">
|
||||
@ -205,6 +224,26 @@
|
||||
<div id="progressBar" class="progress-bar progress-bar-striped progress-bar-animated" role="progressbar" style="width: 0%"></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<!-- Multi-speaker conversation view -->
|
||||
<div id="conversationView" class="card mt-4" style="display: none;">
|
||||
<div class="card-header bg-info text-white d-flex justify-content-between align-items-center">
|
||||
<h5 class="mb-0">Conversation</h5>
|
||||
<div>
|
||||
<button id="exportConversation" class="btn btn-sm btn-light">
|
||||
<i class="fas fa-download"></i> Export
|
||||
</button>
|
||||
<button id="clearConversation" class="btn btn-sm btn-light">
|
||||
<i class="fas fa-trash"></i> Clear
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="card-body" style="max-height: 400px; overflow-y: auto;">
|
||||
<div id="conversationContent">
|
||||
<!-- Conversation entries will be added here -->
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<audio id="audioPlayer" style="display: none;"></audio>
|
||||
|
||||
@ -305,6 +344,13 @@
|
||||
<small class="text-muted d-block">Shows translation as it's generated for faster feedback</small>
|
||||
</label>
|
||||
</div>
|
||||
<div class="form-check form-switch mb-3">
|
||||
<input class="form-check-input" type="checkbox" id="multiSpeakerMode">
|
||||
<label class="form-check-label" for="multiSpeakerMode">
|
||||
Enable multi-speaker mode
|
||||
<small class="text-muted d-block">Track multiple speakers in conversations</small>
|
||||
</label>
|
||||
</div>
|
||||
|
||||
<hr>
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user