From c0e3aace8eea788db9ba9d2efdb745337ff05b8a Mon Sep 17 00:00:00 2001 From: Chandu Date: Sat, 4 Jul 2026 19:47:59 -0400 Subject: [PATCH] Initial upload --- .gitignore | 18 + index.html | 66 +++ package-lock.json | 1074 +++++++++++++++++++++++++++++++++++++++++++++ package.json | 16 + script.js | 631 ++++++++++++++++++++++++++ server.js | 437 ++++++++++++++++++ styles.css | 69 +++ 7 files changed, 2311 insertions(+) create mode 100644 .gitignore create mode 100644 index.html create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 script.js create mode 100644 server.js create mode 100644 styles.css diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d1e46e5 --- /dev/null +++ b/.gitignore @@ -0,0 +1,18 @@ +node_modules/ +.env +.env.* +*.log +*.tmp +*.temp +.DS_Store +*.sqlite +*.db +*.pem +*.key +*.p12 +*.pfx +dist/ +build/ +coverage/ +.vscode/ +.idea/ diff --git a/index.html b/index.html new file mode 100644 index 0000000..1ad5ad4 --- /dev/null +++ b/index.html @@ -0,0 +1,66 @@ + + + + + + Voice to Voice & Text Translator + + + +
+

Voice to Voice & Text Translator

+

Speak, translate, and hear the answer in another language.

+ +
+ + + +
+ +
+ +
+ + + +
+
Ready
+
+ +
+

Translation

+
Translation will appear here...
+
+
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+ +// API URL Configuration +const getApiUrl = () => { + if (isMobileApp()) { + // For mobile apps, use your deployed API URL + // Or local IP for testing: 'http://192.168.1.100:3000' + return localStorage.getItem('apiUrl') || 'http://localhost:3000'; + } + return ''; // Use relative URL for web +}; + +const API_URL = getApiUrl(); +console.log('API URL:', API_URL); + +// Initialize Speech Recognition API +const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition; +const recognition = SpeechRecognition ? new SpeechRecognition() : null; + +function isVoiceInputAllowed() { + return window.isSecureContext || + location.protocol === 'https:' || + location.hostname === 'localhost' || + location.hostname === '127.0.0.1' || + location.hostname.endsWith('.local'); +} + +// Initialize Speech Synthesis API +const speechSynthesis = window.speechSynthesis; +let availableVoices = []; +let voicesLoaded = false; +let mediaRecorder = null; +let audioStream = null; +let audioChunks = []; +let isRecording = false; +let autoSpeakAfterVoice = false; + +// DOM Elements +const sourceText = document.getElementById('sourceText'); +const translatedText = document.getElementById('translatedText'); +const sourceLang = document.getElementById('sourceLang'); +const targetLang = document.getElementById('targetLang'); +const voiceBtn = document.getElementById('voiceBtn'); +const clearSourceBtn = document.getElementById('clearSourceBtn') || document.getElementById('clearBtn'); +const speakBtn = document.getElementById('speakBtn'); +const copyBtn = document.getElementById('copyBtn'); +const swapBtn = document.getElementById('swapBtn'); +const voiceStatus = document.getElementById('voiceStatus'); +const statusMessage = document.getElementById('statusMessage') || document.getElementById('status'); +const charCount = document.getElementById('charCount'); +const copyFeedback = document.getElementById('copyFeedback'); + +// Language codes for speech recognition and synthesis +const langMap = { + 'en': 'en-US', + 'es': 'es-ES', + 'fr': 'fr-FR', + 'de': 'de-DE', + 'pt': 'pt-BR', + 'it': 'it-IT', + 'nl': 'nl-NL', + 'ru': 'ru-RU', + 'ar': 'ar-SA', + 'ja': 'ja-JP', + 'ko': 'ko-KR', + 'zh': 'zh-CN', + 'hi': 'hi-IN', + 'ta': 'ta-IN', + 'te': 'te-IN', + 'ml': 'ml-IN', + 'pa': 'pa-IN', + 'kn': 'kn-IN', + 'id': 'id-ID', + 'vi': 'vi-VN', + 'tr': 'tr-TR' +}; + +const remoteTtsLanguages = new Set(['ta', 'te', 'ml', 'pa', 'kn']); + +// Initialize +document.addEventListener('DOMContentLoaded', () => { + setupEventListeners(); + + // Check for HTTPS/secure-context requirement for voice input + if (!isVoiceInputAllowed() && !isMobileApp()) { + console.warn('Voice input requires a secure context. Access via https://localhost:3443 for full functionality.'); + } + + // Check voice input support + const voiceSupportAvailable = !!(navigator.mediaDevices?.getUserMedia && window.MediaRecorder); + if (!voiceSupportAvailable) { + console.warn('Voice recording not supported in this browser.'); + if (voiceBtn) { + voiceBtn.disabled = true; + voiceBtn.title = 'Voice input not supported in this browser'; + voiceBtn.style.opacity = '0.5'; + } + } + + // Check speech synthesis support + if (!speechSynthesis) { + console.warn('Speech synthesis not supported in this browser.'); + if (speakBtn) { + speakBtn.disabled = true; + speakBtn.title = 'Text-to-speech not supported in this browser'; + speakBtn.style.opacity = '0.5'; + } + } else { + loadVoices(); + } + + showStatus('Ready to translate!', 'success'); +}); + +// Setup Event Listeners +function setupEventListeners() { + const bind = (element, event, handler) => { + if (element) { + element.addEventListener(event, handler); + } + }; + + bind(sourceText, 'input', handleTextInput); + bind(voiceBtn, 'click', handleVoiceInput); + bind(clearSourceBtn, 'click', clearInput); + bind(speakBtn, 'click', speakTranslation); + bind(copyBtn, 'click', copyTranslation); + bind(swapBtn, 'click', swapLanguages); + bind(sourceLang, 'change', translateOnChange); + bind(targetLang, 'change', translateOnChange); + + if (recognition) { + recognition.addEventListener('start', () => { + voiceBtn.classList.add('listening'); + voiceStatus.textContent = '🎤 Listening...'; + }); + + recognition.addEventListener('result', handleSpeechResult); + + recognition.addEventListener('end', () => { + voiceBtn.classList.remove('listening'); + voiceStatus.textContent = ''; + }); + + recognition.addEventListener('error', (e) => { + console.error('Speech recognition error:', e.error); + let errorMessage = ''; + + switch(e.error) { + case 'no-speech': + errorMessage = 'No speech detected. Please try again.'; + break; + case 'audio-capture': + errorMessage = 'Audio capture failed. Check your microphone.'; + break; + case 'not-allowed': + errorMessage = 'Microphone permission denied.'; + break; + case 'network': + errorMessage = 'Network error during speech recognition.'; + break; + case 'service-not-allowed': + errorMessage = 'Speech recognition service not allowed.'; + break; + default: + errorMessage = `Speech recognition error: ${e.error}`; + } + + voiceStatus.textContent = `❌ ${errorMessage}`; + voiceBtn.classList.remove('listening'); + showStatus(errorMessage, 'error'); + }); + } +} + +// Handle Text Input +function handleTextInput(e) { + const text = e.target.value; + if (charCount) { + charCount.textContent = text.length; + } + + if (text.trim().length > 0) { + debounceTranslate(); + } else { + translatedText.textContent = ''; + } +} + +// Debounce Translation +let translateTimeout; +function debounceTranslate() { + clearTimeout(translateTimeout); + translateTimeout = setTimeout(() => { + translateText(); + }, 500); +} + +// Translate Text +async function translateText() { + const text = sourceText.value.trim(); + if (!text) return; + + const source = sourceLang.value; + const target = targetLang.value; + + if (source === target) { + translatedText.textContent = text; + return; + } + + try { + showStatus('Translating...', 'loading'); + const response = await fetch(`${API_URL}/api/translate`, { + method: 'POST', + headers: { + 'Content-Type': 'application/json' + }, + body: JSON.stringify({ + text: text, + sourceLang: source, + targetLang: target + }) + }); + + if (!response.ok) { + throw new Error('Translation failed'); + } + + const data = await response.json(); + translatedText.textContent = data.translatedText; + showStatus('Translation complete!', 'success'); + + if (autoSpeakAfterVoice) { + autoSpeakAfterVoice = false; + speakTranslation(); + } + } catch (error) { + console.error('Translation error:', error); + // Fallback to client-side translation using simple mapping + translatedText.textContent = text; // Fallback: show original text + showStatus('Using direct translation (server unavailable)', 'error'); + } +} + +// Handle Voice Input +async function handleVoiceInput() { + if (!navigator.mediaDevices?.getUserMedia || !window.MediaRecorder) { + showStatus('Voice recording is not supported in this browser.', 'error'); + return; + } + + if (!isVoiceInputAllowed() && !isMobileApp()) { + showStatus('Voice input requires a secure context. Please access via https://localhost:3443', 'error'); + return; + } + + if (isRecording) { + if (mediaRecorder && mediaRecorder.state !== 'inactive') { + mediaRecorder.stop(); + } + isRecording = false; + voiceBtn.classList.remove('listening'); + voiceStatus.textContent = '🔄 Processing voice...'; + return; + } + + try { + audioChunks = []; + const stream = await navigator.mediaDevices.getUserMedia({ audio: true }); + audioStream = stream; + + const mimeType = MediaRecorder.isTypeSupported('audio/webm') ? 'audio/webm' : 'audio/mp4'; + mediaRecorder = new MediaRecorder(stream, { mimeType }); + + mediaRecorder.ondataavailable = (event) => { + if (event.data.size > 0) { + audioChunks.push(event.data); + } + }; + + mediaRecorder.onstop = async () => { + const blob = new Blob(audioChunks, { type: mediaRecorder.mimeType || 'audio/webm' }); + if (audioStream) { + audioStream.getTracks().forEach(track => track.stop()); + audioStream = null; + } + await transcribeAudio(blob); + }; + + mediaRecorder.start(); + isRecording = true; + voiceBtn.classList.add('listening'); + voiceStatus.textContent = '🎤 Listening...'; + showStatus('Listening for voice input...', 'success'); + } catch (error) { + console.error('Microphone permission denied:', error); + showStatus('Microphone permission required for voice input', 'error'); + voiceStatus.textContent = '❌ Microphone access denied'; + } +} + +async function transcribeAudio(blob) { + try { + const response = await fetch(`${API_URL}/api/transcribe`, { + method: 'POST', + headers: { + 'Content-Type': blob.type || 'audio/webm' + }, + body: blob + }); + + if (!response.ok) { + throw new Error('Transcription failed'); + } + + const data = await response.json(); + const transcript = data.transcript || ''; + sourceText.value = transcript; + if (charCount) { + charCount.textContent = transcript.length; + } + if (voiceStatus) { + voiceStatus.textContent = '✓ Voice captured'; + } + autoSpeakAfterVoice = true; + await translateText(); + } catch (error) { + console.error('Voice transcription error:', error); + showStatus('Voice transcription failed', 'error'); + voiceStatus.textContent = '❌ Voice transcription failed'; + } +} + +function loadVoices() { + if (!speechSynthesis || typeof speechSynthesis.getVoices !== 'function') return; + + availableVoices = speechSynthesis.getVoices(); + voicesLoaded = availableVoices.length > 0; + + if (!voicesLoaded) { + speechSynthesis.onvoiceschanged = () => { + availableVoices = speechSynthesis.getVoices(); + voicesLoaded = availableVoices.length > 0; + }; + } +} + +function getPreferredVoice(languageCode) { + if (!speechSynthesis || !availableVoices.length) return null; + + const normalizedCode = languageCode.toLowerCase(); + const directMatch = availableVoices.find(voice => voice.lang && voice.lang.toLowerCase() === normalizedCode); + if (directMatch) return directMatch; + + const languageMatch = availableVoices.find(voice => voice.lang && voice.lang.toLowerCase().startsWith(normalizedCode)); + if (languageMatch) return languageMatch; + + return availableVoices.find(voice => voice.localService) || availableVoices[0] || null; +} + +// Handle Speech Result +function handleSpeechResult(event) { + let transcript = ''; + let isFinal = false; + + for (let i = event.resultIndex; i < event.results.length; i++) { + transcript += event.results[i][0].transcript; + if (event.results[i].isFinal) { + isFinal = true; + } + } + + // Show interim results + sourceText.value = transcript; + if (charCount) { + charCount.textContent = transcript.length; + } + + if (isFinal) { + voiceStatus.textContent = '✓ Transcribed successfully'; + setTimeout(() => { + voiceStatus.textContent = ''; + }, 2000); + translateText(); + } else { + voiceStatus.textContent = '🎤 Listening... (interim)'; + } +} + +// Speak Translation +function speakTranslation() { + if (!speechSynthesis) { + showStatus('Text-to-speech is not supported in this browser', 'error'); + return; + } + + const text = translatedText.textContent?.trim(); + + if (!text || text === 'Translation will appear here...') { + showStatus('Nothing to speak', 'error'); + return; + } + + const speakText = () => { + speechSynthesis.cancel(); + speechSynthesis.resume(); + + const utterance = new SpeechSynthesisUtterance(text.replace(/\s+/g, ' ')); + utterance.lang = langMap[targetLang.value] || 'en-US'; + utterance.rate = 0.95; + utterance.pitch = 1; + utterance.volume = 1; + + const preferredVoice = getPreferredVoice(utterance.lang); + const useRemote = remoteTtsLanguages.has(targetLang.value) && !!API_URL; + + if (useRemote) { + speakWithRemoteTts(text, targetLang.value, utterance, preferredVoice); + return; + } + + if (preferredVoice) { + utterance.voice = preferredVoice; + } + + utterance.onstart = () => { + speakBtn.disabled = true; + showStatus('Speaking...', 'success'); + }; + + utterance.onend = () => { + speakBtn.disabled = false; + showStatus('Done speaking', 'success'); + }; + + utterance.onerror = (e) => { + speakBtn.disabled = false; + showStatus(`Speech error: ${e.error}`, 'error'); + }; + + speechSynthesis.speak(utterance); + }; + + if (!voicesLoaded && typeof speechSynthesis.getVoices === 'function') { + loadVoices(); + window.setTimeout(speakText, 250); + } else { + speakText(); + } +} + +async function speakWithRemoteTts(text, targetLang, utterance, preferredVoice) { + if (!API_URL) { + showStatus('Cannot generate speech without a server URL', 'error'); + return; + } + + try { + showStatus('Generating speech...', 'loading'); + speakBtn.disabled = true; + + const response = await fetch(`${API_URL}/api/speak`, { + method: 'POST', + headers: { + 'Content-Type': 'application/json' + }, + body: JSON.stringify({ text, targetLang }) + }); + + if (!response.ok) { + throw new Error('Remote speech generation failed'); + } + + const data = await response.json(); + if (!data.audio) { + throw new Error('No audio returned from speech service'); + } + + const audioType = data.format || 'audio/wav'; + const audio = new Audio(`data:${audioType};base64,${data.audio}`); + audio.onended = () => { + speakBtn.disabled = false; + showStatus('Done speaking', 'success'); + }; + audio.onerror = (e) => { + console.error('Remote audio playback error', e); + if (preferredVoice) { + utterance.voice = preferredVoice; + } + utterance.onstart = () => { + speakBtn.disabled = true; + showStatus('Speaking...', 'success'); + }; + utterance.onend = () => { + speakBtn.disabled = false; + showStatus('Done speaking', 'success'); + }; + utterance.onerror = (err) => { + speakBtn.disabled = false; + showStatus(`Speech error: ${err.error}`, 'error'); + }; + speechSynthesis.speak(utterance); + }; + + await audio.play(); + } catch (error) { + console.warn('Remote TTS failed, falling back to browser speech:', error); + if (preferredVoice) { + utterance.voice = preferredVoice; + } + utterance.onstart = () => { + speakBtn.disabled = true; + showStatus('Speaking...', 'success'); + }; + utterance.onend = () => { + speakBtn.disabled = false; + showStatus('Done speaking', 'success'); + }; + 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'); diff --git a/server.js b/server.js new file mode 100644 index 0000000..89d261c --- /dev/null +++ b/server.js @@ -0,0 +1,437 @@ +const express = require('express'); +const cors = require('cors'); +const bodyParser = require('body-parser'); +const axios = require('axios'); +const path = require('path'); +const googleTTS = require('google-tts-api'); +require('dotenv').config(); + +const HUGGINGFACE_API_TOKEN = process.env.HUGGINGFACEHUB_API_TOKEN || process.env.HF_API_TOKEN; +const huggingFaceLangMap = { + 'en': 'eng', + 'es': 'spa', + 'fr': 'fra', + 'de': 'deu', + 'pt': 'por', + 'it': 'ita', + 'nl': 'nld', + 'ru': 'rus', + 'ar': 'ara', + 'ja': 'jpn', + 'ko': 'kor', + 'zh': 'zho', + 'hi': 'hin', + 'ta': 'tam', + 'te': 'tel', + 'ml': 'mal', + 'pa': 'pan', + 'kn': 'kan', + 'id': 'ind', + 'vi': 'vie', + 'tr': 'tur' +}; + +const app = express(); +const PORT = process.env.PORT || 3000; + +// Middleware +app.use(cors()); +app.use(bodyParser.json({ limit: '10mb' })); +app.use(bodyParser.urlencoded({ limit: '10mb', extended: true })); +app.use(bodyParser.raw({ type: 'audio/*', limit: '10mb' })); +app.use(express.static(path.join(__dirname))); + +// Language code mapping +const langMap = { + 'en': 'en', + 'es': 'es', + 'fr': 'fr', + 'de': 'de', + 'pt': 'pt', + 'ja': 'ja', + 'ko': 'ko', + 'zh': 'zh-CN', + 'ta': 'ta', + 'te': 'te', + 'ml': 'ml', + 'hi': 'hi' +}; + +// Translation API endpoint (using free mymemory translation API) +const translateViaMyMemory = async (text, sourceLang, targetLang) => { + try { + const response = await axios.get('https://api.mymemory.translated.net/get', { + params: { + q: text, + langpair: `${sourceLang}|${targetLang}` + } + }); + + if (response.data.responseStatus === 200) { + return response.data.responseData.translatedText; + } + throw new Error('Translation failed'); + } catch (error) { + console.error('MyMemory translation error:', error.message); + return null; + } +}; + +// Hugging Face translation via M2M100 +const translateViaHuggingFace = async (text, sourceLang, targetLang) => { + if (!HUGGINGFACE_API_TOKEN) { + return null; + } + + const srcCode = huggingFaceLangMap[sourceLang] || 'eng'; + const tgtCode = huggingFaceLangMap[targetLang] || 'eng'; + + try { + const response = await axios.post( + 'https://api-inference.huggingface.co/models/facebook/m2m100_418M', + { + inputs: text, + parameters: { + src_lang: srcCode, + tgt_lang: tgtCode + } + }, + { + headers: { + Authorization: `Bearer ${HUGGINGFACE_API_TOKEN}`, + 'Content-Type': 'application/json' + }, + timeout: 20000 + } + ); + + const data = response.data; + if (Array.isArray(data) && data[0]?.generated_text) { + return data[0].generated_text; + } + if (data?.generated_text) { + return data.generated_text; + } + if (typeof data === 'string') { + return data; + } + + return null; + } catch (error) { + console.error('Hugging Face translation error:', error.message || error); + return null; + } +}; + +// Hugging Face text-to-speech +const ttsLangMap = { + 'en': 'en-US', + 'es': 'es-ES', + 'fr': 'fr-FR', + 'de': 'de-DE', + 'pt': 'pt-BR', + 'it': 'it-IT', + 'nl': 'nl-NL', + 'ru': 'ru-RU', + 'ar': 'ar-SA', + 'ja': 'ja-JP', + 'ko': 'ko-KR', + 'zh': 'zh-CN', + 'hi': 'hi-IN', + 'ta': 'ta-IN', + 'te': 'te-IN', + 'ml': 'ml-IN', + 'pa': 'pa-IN', + 'kn': 'kn-IN', + 'id': 'id-ID', + 'vi': 'vi-VN', + 'tr': 'tr-TR' +}; + +const speakViaHuggingFace = async (text, targetLang) => { + const normalizedLang = (targetLang || 'en').toLowerCase(); + if (!HUGGINGFACE_API_TOKEN) { + return await speakViaGoogleTts(text, normalizedLang); + } + const ttsLang = ttsLangMap[normalizedLang] || 'en-US'; + const preferredModels = []; + + if (['ta', 'te', 'ml', 'kn', 'pa', 'hi'].includes(normalizedLang)) { + const languageModelMap = { + 'ta': 'facebook/mms-tts-ta', + 'te': 'facebook/mms-tts-te', + 'ml': 'facebook/mms-tts-ml', + 'kn': 'facebook/mms-tts-kn', + 'pa': 'facebook/mms-tts-pa', + 'hi': 'facebook/mms-tts-hi' + }; + preferredModels.push(languageModelMap[normalizedLang]); + } + + preferredModels.push( + 'microsoft/speecht5_tts', + 'tts_models/multilingual/multi-dataset/your_tts' + ); + + for (const model of preferredModels) { + try { + const payload = model.includes('mms-tts') + ? { inputs: text } + : model.includes('speecht5') + ? { + inputs: text, + parameters: { + language: ttsLang, + voice: 'alloy' + } + } + : { + inputs: text, + parameters: { + speaker: 'alloy', + language: ttsLang + } + }; + + const response = await axios.post( + `https://api-inference.huggingface.co/models/${model}`, + payload, + { + headers: { + Authorization: `Bearer ${HUGGINGFACE_API_TOKEN}`, + 'Content-Type': 'application/json', + Accept: 'audio/*' + }, + responseType: 'arraybuffer', + timeout: 60000 + } + ); + + const contentType = response.headers['content-type'] || 'audio/wav'; + if (response.data && contentType.includes('audio')) { + return { + audio: Buffer.from(response.data).toString('base64'), + format: contentType.includes('mpeg') ? 'audio/mpeg' : 'audio/wav' + }; + } + } catch (error) { + console.warn(`Hugging Face TTS model ${model} failed:`, error.message || error); + } + } + + return await speakViaGoogleTts(text, normalizedLang); +}; + +const speakViaGoogleTts = async (text, targetLang) => { + try { + const url = googleTTS.getAudioUrl(text, { + lang: targetLang, + slow: false, + host: 'https://translate.google.com', + splitPunctuation: '.?' + }); + + const response = await axios.get(url, { + responseType: 'arraybuffer', + headers: { + 'User-Agent': 'Mozilla/5.0 (compatible; GoogleTTS/1.0)' + }, + timeout: 20000 + }); + + if (response.data) { + return { + audio: Buffer.from(response.data).toString('base64'), + format: 'audio/mpeg' + }; + } + } catch (error) { + console.warn('Google TTS fallback failed:', error.message || error); + } + + return null; +}; + +// Alternative: Using LibreTranslate if available locally +const translateViaLibreTranslate = async (text, sourceLang, targetLang) => { + try { + const response = await axios.post('http://localhost:5000/translate', { + q: text, + source: sourceLang, + target: targetLang + }, { + timeout: 5000 + }); + return response.data.translatedText; + } catch (error) { + console.warn('LibreTranslate not available, trying MyMemory...'); + return null; + } +}; + +// Speech-to-text endpoint using Hugging Face Whisper +app.post('/api/transcribe', async (req, res) => { + try { + const audioBuffer = req.body; + if (!audioBuffer || audioBuffer.length === 0) { + return res.status(400).json({ error: 'No audio provided' }); + } + + if (!HUGGINGFACE_API_TOKEN) { + return res.status(500).json({ error: 'Hugging Face token not configured' }); + } + + const contentType = req.headers['content-type'] || 'application/octet-stream'; + const response = await axios.post( + 'https://api-inference.huggingface.co/models/openai/whisper-large-v3', + audioBuffer, + { + headers: { + Authorization: `Bearer ${HUGGINGFACE_API_TOKEN}`, + 'Content-Type': contentType + }, + timeout: 60000 + } + ); + + const data = response.data; + const transcript = Array.isArray(data) ? data[0]?.text : data?.text || ''; + res.json({ transcript }); + } catch (error) { + console.error('Speech-to-text error:', error.message || error); + res.status(500).json({ error: 'Speech-to-text failed' }); + } +}); + +// Translation endpoint +app.post('/api/translate', async (req, res) => { + try { + const { text, sourceLang, targetLang } = req.body; + + // Validate input + if (!text || !sourceLang || !targetLang) { + return res.status(400).json({ error: 'Missing required fields' }); + } + + if (text.length > 5000) { + return res.status(400).json({ error: 'Text exceeds 5000 character limit' }); + } + + // If source and target languages are the same + if (sourceLang === targetLang) { + return res.json({ translatedText: text }); + } + + console.log(`Translating "${text.substring(0, 50)}..." from ${sourceLang} to ${targetLang}`); + + // Try Hugging Face first if the key is configured + let translatedText = await translateViaHuggingFace(text, sourceLang, targetLang); + + // Fallback to LibreTranslate if available locally + if (!translatedText) { + translatedText = await translateViaLibreTranslate(text, sourceLang, targetLang); + } + + // Fallback to MyMemory if other services are unavailable + if (!translatedText) { + translatedText = await translateViaMyMemory(text, sourceLang, targetLang); + } + + if (!translatedText) { + return res.status(500).json({ + error: 'Translation service unavailable', + translatedText: text // Fallback to original text + }); + } + + res.json({ translatedText }); + } catch (error) { + console.error('Translation error:', error); + res.status(500).json({ error: 'Internal server error' }); + } +}); + +app.post('/api/speak', async (req, res) => { + try { + const { text, targetLang } = req.body; + + if (!text || !targetLang) { + return res.status(400).json({ error: 'Missing required fields' }); + } + + const speechResult = await speakViaHuggingFace(text, targetLang); + if (!speechResult?.audio) { + return res.status(500).json({ error: 'Speech service unavailable' }); + } + + res.json({ audio: speechResult.audio, format: speechResult.format || 'audio/wav' }); + } catch (error) { + console.error('Speech endpoint error:', error); + res.status(500).json({ error: 'Internal server error' }); + } +}); + +// Health check endpoint +app.get('/api/health', (req, res) => { + res.json({ status: 'healthy', message: 'Translator API is running' }); +}); + +// Get supported languages +app.get('/api/languages', (req, res) => { + const languages = { + 'en': 'English', + 'es': 'Spanish', + 'fr': 'French', + 'de': 'German', + 'pt': 'Portuguese', + 'it': 'Italian', + 'nl': 'Dutch', + 'ru': 'Russian', + 'ar': 'Arabic', + 'ja': 'Japanese', + 'ko': 'Korean', + 'zh': 'Chinese (Simplified)', + 'hi': 'Hindi', + 'ta': 'Tamil', + 'te': 'Telugu', + 'ml': 'Malayalam', + 'pa': 'Punjabi', + 'kn': 'Kannada', + 'id': 'Indonesian', + 'vi': 'Vietnamese', + 'tr': 'Turkish' + }; + res.json(languages); +}); + +// Main app page +app.get('/', (req, res) => { + res.sendFile(path.join(__dirname, 'index.html')); +}); + +// 404 handler +app.use((req, res) => { + res.status(404).json({ error: 'Not Found' }); +}); + +// Error handler +app.use((err, req, res, next) => { + console.error('Server error:', err); + res.status(500).json({ error: 'Internal Server Error' }); +}); + +// Start server +app.listen(PORT, () => { + console.log(` + ======================================== + 🌍 Language Translator Server + ======================================== + Server running on: http://localhost:${PORT} + + Available endpoints: + - POST /api/translate - Translate text + - GET /api/languages - Get supported languages + - GET /api/health - Health check + ======================================== + `); +}); diff --git a/styles.css b/styles.css new file mode 100644 index 0000000..5f5148b --- /dev/null +++ b/styles.css @@ -0,0 +1,69 @@ +body { + font-family: Arial, sans-serif; + background: #0f172a; + color: #f8fafc; + margin: 0; + padding: 24px; +} +.app { + max-width: 860px; + margin: 0 auto; + background: #111827; + border-radius: 16px; + padding: 24px; + box-shadow: 0 10px 30px rgba(0,0,0,0.25); +} +.controls { + display: flex; + gap: 16px; + margin-bottom: 16px; +} +label { + display: flex; + flex-direction: column; + gap: 6px; + font-weight: 600; +} +select, textarea, button { + border-radius: 10px; + border: 1px solid #334155; + padding: 10px 12px; + font-size: 1rem; +} +textarea { + width: 100%; + min-height: 140px; + resize: vertical; + margin-bottom: 12px; +} +.buttons { + display: flex; + gap: 10px; + flex-wrap: wrap; +} +button { + cursor: pointer; + background: #2563eb; + color: white; +} +button:disabled { + opacity: 0.6; + cursor: not-allowed; +} +.panel { + background: #1f2937; + border-radius: 12px; + padding: 16px; + margin-top: 16px; +} +.output #translatedText { + min-height: 80px; + padding: 12px; + background: #111827; + border-radius: 10px; +} +.status { + margin-top: 10px; + font-size: 0.95rem; + color: #93c5fd; +}