Initial upload
This commit is contained in:
Chandu
631
script.js
Normal file
631
script.js
Normal file
@@ -0,0 +1,631 @@
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// Mobile Detection
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const isMobileApp = () => window.Capacitor !== undefined;
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console.log('Mobile App:', isMobileApp());
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// API URL Configuration
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const getApiUrl = () => {
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if (isMobileApp()) {
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// For mobile apps, use your deployed API URL
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// Or local IP for testing: 'http://192.168.1.100:3000'
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return localStorage.getItem('apiUrl') || 'http://localhost:3000';
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}
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return ''; // Use relative URL for web
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};
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const API_URL = getApiUrl();
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console.log('API URL:', API_URL);
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// Initialize Speech Recognition API
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const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
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const recognition = SpeechRecognition ? new SpeechRecognition() : null;
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function isVoiceInputAllowed() {
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return window.isSecureContext ||
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location.protocol === 'https:' ||
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location.hostname === 'localhost' ||
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location.hostname === '127.0.0.1' ||
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location.hostname.endsWith('.local');
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}
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// Initialize Speech Synthesis API
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const speechSynthesis = window.speechSynthesis;
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let availableVoices = [];
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let voicesLoaded = false;
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let mediaRecorder = null;
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let audioStream = null;
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let audioChunks = [];
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let isRecording = false;
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let autoSpeakAfterVoice = false;
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// DOM Elements
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const sourceText = document.getElementById('sourceText');
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const translatedText = document.getElementById('translatedText');
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const sourceLang = document.getElementById('sourceLang');
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const targetLang = document.getElementById('targetLang');
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const voiceBtn = document.getElementById('voiceBtn');
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const clearSourceBtn = document.getElementById('clearSourceBtn') || document.getElementById('clearBtn');
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const speakBtn = document.getElementById('speakBtn');
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const copyBtn = document.getElementById('copyBtn');
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const swapBtn = document.getElementById('swapBtn');
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const voiceStatus = document.getElementById('voiceStatus');
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const statusMessage = document.getElementById('statusMessage') || document.getElementById('status');
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const charCount = document.getElementById('charCount');
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const copyFeedback = document.getElementById('copyFeedback');
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// Language codes for speech recognition and synthesis
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const langMap = {
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'en': 'en-US',
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'es': 'es-ES',
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'fr': 'fr-FR',
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'de': 'de-DE',
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'pt': 'pt-BR',
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'it': 'it-IT',
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'nl': 'nl-NL',
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'ru': 'ru-RU',
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'ar': 'ar-SA',
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'ja': 'ja-JP',
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'ko': 'ko-KR',
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'zh': 'zh-CN',
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'hi': 'hi-IN',
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'ta': 'ta-IN',
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'te': 'te-IN',
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'ml': 'ml-IN',
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'pa': 'pa-IN',
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'kn': 'kn-IN',
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'id': 'id-ID',
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'vi': 'vi-VN',
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'tr': 'tr-TR'
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};
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const remoteTtsLanguages = new Set(['ta', 'te', 'ml', 'pa', 'kn']);
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// Initialize
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document.addEventListener('DOMContentLoaded', () => {
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setupEventListeners();
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// Check for HTTPS/secure-context requirement for voice input
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if (!isVoiceInputAllowed() && !isMobileApp()) {
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console.warn('Voice input requires a secure context. Access via https://localhost:3443 for full functionality.');
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}
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// Check voice input support
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const voiceSupportAvailable = !!(navigator.mediaDevices?.getUserMedia && window.MediaRecorder);
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if (!voiceSupportAvailable) {
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console.warn('Voice recording not supported in this browser.');
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if (voiceBtn) {
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voiceBtn.disabled = true;
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voiceBtn.title = 'Voice input not supported in this browser';
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voiceBtn.style.opacity = '0.5';
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}
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}
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// Check speech synthesis support
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if (!speechSynthesis) {
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console.warn('Speech synthesis not supported in this browser.');
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if (speakBtn) {
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speakBtn.disabled = true;
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speakBtn.title = 'Text-to-speech not supported in this browser';
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speakBtn.style.opacity = '0.5';
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}
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} else {
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loadVoices();
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}
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showStatus('Ready to translate!', 'success');
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});
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// Setup Event Listeners
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function setupEventListeners() {
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const bind = (element, event, handler) => {
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if (element) {
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element.addEventListener(event, handler);
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}
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};
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bind(sourceText, 'input', handleTextInput);
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bind(voiceBtn, 'click', handleVoiceInput);
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bind(clearSourceBtn, 'click', clearInput);
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bind(speakBtn, 'click', speakTranslation);
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bind(copyBtn, 'click', copyTranslation);
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bind(swapBtn, 'click', swapLanguages);
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bind(sourceLang, 'change', translateOnChange);
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bind(targetLang, 'change', translateOnChange);
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if (recognition) {
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recognition.addEventListener('start', () => {
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voiceBtn.classList.add('listening');
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voiceStatus.textContent = '🎤 Listening...';
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});
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recognition.addEventListener('result', handleSpeechResult);
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recognition.addEventListener('end', () => {
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voiceBtn.classList.remove('listening');
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voiceStatus.textContent = '';
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});
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recognition.addEventListener('error', (e) => {
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console.error('Speech recognition error:', e.error);
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let errorMessage = '';
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switch(e.error) {
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case 'no-speech':
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errorMessage = 'No speech detected. Please try again.';
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break;
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case 'audio-capture':
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errorMessage = 'Audio capture failed. Check your microphone.';
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break;
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case 'not-allowed':
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errorMessage = 'Microphone permission denied.';
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break;
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case 'network':
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errorMessage = 'Network error during speech recognition.';
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break;
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case 'service-not-allowed':
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errorMessage = 'Speech recognition service not allowed.';
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break;
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default:
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errorMessage = `Speech recognition error: ${e.error}`;
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}
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voiceStatus.textContent = `❌ ${errorMessage}`;
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voiceBtn.classList.remove('listening');
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showStatus(errorMessage, 'error');
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});
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}
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}
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// Handle Text Input
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function handleTextInput(e) {
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const text = e.target.value;
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if (charCount) {
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charCount.textContent = text.length;
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}
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if (text.trim().length > 0) {
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debounceTranslate();
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} else {
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translatedText.textContent = '';
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}
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}
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// Debounce Translation
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let translateTimeout;
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function debounceTranslate() {
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clearTimeout(translateTimeout);
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translateTimeout = setTimeout(() => {
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translateText();
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}, 500);
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}
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// Translate Text
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async function translateText() {
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const text = sourceText.value.trim();
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if (!text) return;
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const source = sourceLang.value;
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const target = targetLang.value;
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if (source === target) {
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translatedText.textContent = text;
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return;
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}
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try {
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showStatus('Translating...', 'loading');
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const response = await fetch(`${API_URL}/api/translate`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({
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text: text,
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sourceLang: source,
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targetLang: target
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})
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});
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if (!response.ok) {
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throw new Error('Translation failed');
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}
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const data = await response.json();
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translatedText.textContent = data.translatedText;
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showStatus('Translation complete!', 'success');
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if (autoSpeakAfterVoice) {
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autoSpeakAfterVoice = false;
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speakTranslation();
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}
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} catch (error) {
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console.error('Translation error:', error);
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// Fallback to client-side translation using simple mapping
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translatedText.textContent = text; // Fallback: show original text
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showStatus('Using direct translation (server unavailable)', 'error');
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}
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}
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// Handle Voice Input
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async function handleVoiceInput() {
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if (!navigator.mediaDevices?.getUserMedia || !window.MediaRecorder) {
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showStatus('Voice recording is not supported in this browser.', 'error');
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return;
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}
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if (!isVoiceInputAllowed() && !isMobileApp()) {
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showStatus('Voice input requires a secure context. Please access via https://localhost:3443', 'error');
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return;
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}
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if (isRecording) {
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if (mediaRecorder && mediaRecorder.state !== 'inactive') {
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mediaRecorder.stop();
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}
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isRecording = false;
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voiceBtn.classList.remove('listening');
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voiceStatus.textContent = '🔄 Processing voice...';
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return;
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}
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try {
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audioChunks = [];
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const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
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audioStream = stream;
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const mimeType = MediaRecorder.isTypeSupported('audio/webm') ? 'audio/webm' : 'audio/mp4';
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mediaRecorder = new MediaRecorder(stream, { mimeType });
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mediaRecorder.ondataavailable = (event) => {
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if (event.data.size > 0) {
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audioChunks.push(event.data);
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}
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};
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mediaRecorder.onstop = async () => {
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const blob = new Blob(audioChunks, { type: mediaRecorder.mimeType || 'audio/webm' });
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if (audioStream) {
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audioStream.getTracks().forEach(track => track.stop());
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audioStream = null;
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}
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await transcribeAudio(blob);
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};
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mediaRecorder.start();
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isRecording = true;
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voiceBtn.classList.add('listening');
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voiceStatus.textContent = '🎤 Listening...';
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showStatus('Listening for voice input...', 'success');
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} catch (error) {
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console.error('Microphone permission denied:', error);
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showStatus('Microphone permission required for voice input', 'error');
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voiceStatus.textContent = '❌ Microphone access denied';
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}
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}
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async function transcribeAudio(blob) {
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try {
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const response = await fetch(`${API_URL}/api/transcribe`, {
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method: 'POST',
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headers: {
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'Content-Type': blob.type || 'audio/webm'
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},
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body: blob
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});
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if (!response.ok) {
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throw new Error('Transcription failed');
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}
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const data = await response.json();
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const transcript = data.transcript || '';
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sourceText.value = transcript;
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if (charCount) {
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charCount.textContent = transcript.length;
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}
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if (voiceStatus) {
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voiceStatus.textContent = '✓ Voice captured';
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}
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autoSpeakAfterVoice = true;
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await translateText();
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} catch (error) {
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console.error('Voice transcription error:', error);
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showStatus('Voice transcription failed', 'error');
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voiceStatus.textContent = '❌ Voice transcription failed';
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}
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}
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function loadVoices() {
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if (!speechSynthesis || typeof speechSynthesis.getVoices !== 'function') return;
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availableVoices = speechSynthesis.getVoices();
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voicesLoaded = availableVoices.length > 0;
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if (!voicesLoaded) {
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speechSynthesis.onvoiceschanged = () => {
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availableVoices = speechSynthesis.getVoices();
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voicesLoaded = availableVoices.length > 0;
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};
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}
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}
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function getPreferredVoice(languageCode) {
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if (!speechSynthesis || !availableVoices.length) return null;
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const normalizedCode = languageCode.toLowerCase();
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const directMatch = availableVoices.find(voice => voice.lang && voice.lang.toLowerCase() === normalizedCode);
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if (directMatch) return directMatch;
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const languageMatch = availableVoices.find(voice => voice.lang && voice.lang.toLowerCase().startsWith(normalizedCode));
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if (languageMatch) return languageMatch;
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return availableVoices.find(voice => voice.localService) || availableVoices[0] || null;
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}
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// Handle Speech Result
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function handleSpeechResult(event) {
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let transcript = '';
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let isFinal = false;
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for (let i = event.resultIndex; i < event.results.length; i++) {
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transcript += event.results[i][0].transcript;
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if (event.results[i].isFinal) {
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isFinal = true;
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}
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}
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// Show interim results
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sourceText.value = transcript;
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if (charCount) {
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charCount.textContent = transcript.length;
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}
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if (isFinal) {
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voiceStatus.textContent = '✓ Transcribed successfully';
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setTimeout(() => {
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voiceStatus.textContent = '';
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}, 2000);
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translateText();
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} else {
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voiceStatus.textContent = '🎤 Listening... (interim)';
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}
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}
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// Speak Translation
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function speakTranslation() {
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if (!speechSynthesis) {
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showStatus('Text-to-speech is not supported in this browser', 'error');
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return;
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}
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const text = translatedText.textContent?.trim();
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if (!text || text === 'Translation will appear here...') {
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showStatus('Nothing to speak', 'error');
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return;
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}
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const speakText = () => {
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speechSynthesis.cancel();
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speechSynthesis.resume();
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const utterance = new SpeechSynthesisUtterance(text.replace(/\s+/g, ' '));
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utterance.lang = langMap[targetLang.value] || 'en-US';
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utterance.rate = 0.95;
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utterance.pitch = 1;
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utterance.volume = 1;
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const preferredVoice = getPreferredVoice(utterance.lang);
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const useRemote = remoteTtsLanguages.has(targetLang.value) && !!API_URL;
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if (useRemote) {
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speakWithRemoteTts(text, targetLang.value, utterance, preferredVoice);
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return;
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}
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if (preferredVoice) {
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utterance.voice = preferredVoice;
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}
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utterance.onstart = () => {
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speakBtn.disabled = true;
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showStatus('Speaking...', 'success');
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};
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utterance.onend = () => {
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speakBtn.disabled = false;
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showStatus('Done speaking', 'success');
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};
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utterance.onerror = (e) => {
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speakBtn.disabled = false;
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showStatus(`Speech error: ${e.error}`, 'error');
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};
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speechSynthesis.speak(utterance);
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};
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if (!voicesLoaded && typeof speechSynthesis.getVoices === 'function') {
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loadVoices();
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window.setTimeout(speakText, 250);
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} else {
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speakText();
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}
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}
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async function speakWithRemoteTts(text, targetLang, utterance, preferredVoice) {
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if (!API_URL) {
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showStatus('Cannot generate speech without a server URL', 'error');
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return;
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}
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try {
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showStatus('Generating speech...', 'loading');
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speakBtn.disabled = true;
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const response = await fetch(`${API_URL}/api/speak`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({ text, targetLang })
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});
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if (!response.ok) {
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throw new Error('Remote speech generation failed');
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}
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const data = await response.json();
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if (!data.audio) {
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throw new Error('No audio returned from speech service');
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}
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const audioType = data.format || 'audio/wav';
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const audio = new Audio(`data:${audioType};base64,${data.audio}`);
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audio.onended = () => {
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speakBtn.disabled = false;
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showStatus('Done speaking', 'success');
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};
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audio.onerror = (e) => {
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console.error('Remote audio playback error', e);
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if (preferredVoice) {
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utterance.voice = preferredVoice;
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}
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utterance.onstart = () => {
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speakBtn.disabled = true;
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showStatus('Speaking...', 'success');
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};
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utterance.onend = () => {
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speakBtn.disabled = false;
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showStatus('Done speaking', 'success');
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};
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utterance.onerror = (err) => {
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speakBtn.disabled = false;
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showStatus(`Speech error: ${err.error}`, 'error');
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};
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speechSynthesis.speak(utterance);
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};
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await audio.play();
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} catch (error) {
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console.warn('Remote TTS failed, falling back to browser speech:', error);
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if (preferredVoice) {
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utterance.voice = preferredVoice;
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}
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utterance.onstart = () => {
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speakBtn.disabled = true;
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showStatus('Speaking...', 'success');
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};
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utterance.onend = () => {
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speakBtn.disabled = false;
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showStatus('Done speaking', 'success');
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};
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utterance.onerror = (err) => {
|
||||
speakBtn.disabled = false;
|
||||
showStatus(`Speech error: ${err.error}`, 'error');
|
||||
};
|
||||
speechSynthesis.speak(utterance);
|
||||
}
|
||||
}
|
||||
|
||||
// Copy Translation
|
||||
function copyTranslation() {
|
||||
const text = translatedText.textContent;
|
||||
|
||||
if (!text || text === 'Translation will appear here...') {
|
||||
showStatus('Nothing to copy', 'error');
|
||||
return;
|
||||
}
|
||||
|
||||
navigator.clipboard.writeText(text).then(() => {
|
||||
if (copyFeedback) {
|
||||
copyFeedback.textContent = '✓ Copied!';
|
||||
setTimeout(() => {
|
||||
copyFeedback.textContent = '';
|
||||
}, 2000);
|
||||
}
|
||||
showStatus('Copied to clipboard', 'success');
|
||||
}).catch(err => {
|
||||
showStatus('Failed to copy', 'error');
|
||||
});
|
||||
}
|
||||
|
||||
// Clear Input
|
||||
function clearInput() {
|
||||
sourceText.value = '';
|
||||
translatedText.textContent = '';
|
||||
if (charCount) {
|
||||
charCount.textContent = '0';
|
||||
}
|
||||
if (voiceStatus) {
|
||||
voiceStatus.textContent = '';
|
||||
}
|
||||
autoSpeakAfterVoice = false;
|
||||
showStatus('Cleared', 'success');
|
||||
}
|
||||
|
||||
// Swap Languages
|
||||
function swapLanguages() {
|
||||
const temp = sourceLang.value;
|
||||
sourceLang.value = targetLang.value;
|
||||
targetLang.value = temp;
|
||||
|
||||
const tempText = sourceText.value;
|
||||
sourceText.value = translatedText.textContent === 'Translation will appear here...'
|
||||
? ''
|
||||
: translatedText.textContent;
|
||||
translatedText.textContent = tempText || '';
|
||||
|
||||
if (charCount) {
|
||||
charCount.textContent = sourceText.value.length;
|
||||
}
|
||||
translateOnChange();
|
||||
}
|
||||
|
||||
// Translate on Language Change
|
||||
function translateOnChange() {
|
||||
if (sourceText.value.trim().length > 0) {
|
||||
translateText();
|
||||
}
|
||||
}
|
||||
|
||||
// Show Status Message
|
||||
function showStatus(message, type = 'info') {
|
||||
if (!statusMessage) return;
|
||||
|
||||
statusMessage.textContent = message;
|
||||
statusMessage.className = type;
|
||||
|
||||
if (type === 'loading') {
|
||||
statusMessage.style.opacity = '0.7';
|
||||
} else {
|
||||
statusMessage.style.opacity = '1';
|
||||
}
|
||||
}
|
||||
|
||||
// Fallback: Simple offline translation (for demo purposes)
|
||||
const translationMap = {
|
||||
'en-es': {
|
||||
'hello': 'hola',
|
||||
'goodbye': 'adiós',
|
||||
'thank you': 'gracias',
|
||||
'please': 'por favor',
|
||||
'yes': 'sí',
|
||||
'no': 'no'
|
||||
},
|
||||
'en-fr': {
|
||||
'hello': 'bonjour',
|
||||
'goodbye': 'au revoir',
|
||||
'thank you': 'merci',
|
||||
'please': 's\'il vous plaît',
|
||||
'yes': 'oui',
|
||||
'no': 'non'
|
||||
}
|
||||
};
|
||||
|
||||
console.log('✓ Translator app loaded successfully');
|
||||
console.log('Features available:');
|
||||
console.log('- Text translation');
|
||||
console.log('- Voice input (if supported by browser)');
|
||||
console.log('- Text-to-speech output');
|
||||
console.log('- Language swapping');
|
||||
console.log('- Copy to clipboard');
|
||||
Reference in New Issue
Block a user