400 lines
13 KiB
JavaScript
400 lines
13 KiB
JavaScript
const express = require('express');
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const bodyParser = require('body-parser');
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const WebSocket = require('ws');
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const storage = require('node-persist');
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const request = require('request');
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const fs = require('fs');
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const path = require('path');
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const dotenv = require('dotenv');
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const ollama = require('ollama');
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const axios = require('axios');
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const OpenAI = require('openai');
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const Groq = require('groq-sdk');
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// Load environment variables
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dotenv.config({ path: `.env${process.env.NODE_ENV === 'development' ? '.development' : ''}` });
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// Initialize services
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const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });
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const groq = new Groq({ apiKey: process.env.GROQ_API_KEY });
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// Express setup
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const app = express();
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app.use(bodyParser.json());
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// Configuration constants
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const PORT_HTTP = process.env.SERVER_PORT_HTTP || 3000;
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const PORT_WS = process.env.SERVER_PORT_WS || 8080;
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const TTS_API_URL = process.env.TTS_API_URL;
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const LNN_API_URL = process.env.LNN_API_URL;
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const LLN_MODEL = process.env.LLN_MODEL;
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let language = "en";
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let storeRecordings = false;
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let queueCounter = 0;
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const sessions = new Map();
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const chats = new Map(); // Store chat rooms
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// Initialize storage and load initial values
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async function initStorage() {
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await storage.init();
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language = await storage.getItem('language') || language;
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storeRecordings = await storage.getItem('storeRecordings') || storeRecordings;
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const storedChats = await storage.getItem('chats') || [];
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storedChats.forEach(chat => chats.set(chat.id, chat));
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const storedSessions = await storage.getItem('sessions') || [];
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storedSessions.forEach(session => sessions.set(session.sessionId, session));
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}
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initStorage();
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// WebSocket Server
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const wss = new WebSocket.Server({ port: PORT_WS });
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wss.on('connection', ws => {
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ws.on('message', async message => handleMessage(ws, message));
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ws.on('close', () => handleClose(ws));
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});
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// Handle WebSocket messages
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async function handleMessage(ws, message) {
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let data;
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try {
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data = JSON.parse(message);
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} catch {
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return handleAudioData(ws, message);
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}
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try {
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switch (data.type) {
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case 'sessionId':
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await handleSessionId(ws);
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break;
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case 'join':
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await handleJoin(ws, data);
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break;
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case 'startChat':
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await handleStartChat(ws, data);
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break;
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case 'enterChat':
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await handleEnterChat(ws, data);
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break;
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case 'reconnect':
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await handleReconnect(ws, data);
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break;
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default:
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console.log('Unknown message type:', data.type);
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}
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} catch (err) {
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console.error('Failed to handle message', err);
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}
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}
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function handleClose(ws) {
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sessions.delete(ws.sessionId);
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broadcastUserList();
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}
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// Handlers for specific message types
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async function handleSessionId(ws) {
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ws.sessionId = generateSessionId();
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sessions.set(ws.sessionId, { language: 'en' });
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await storage.setItem('sessions', Array.from(sessions.values()));
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}
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async function handleJoin(ws, { username, language }) {
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sessions.set(ws.sessionId, { username, sessionId: ws.sessionId, language });
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ws.send(JSON.stringify({ type: 'sessionId', sessionId: ws.sessionId, language, storeRecordings }));
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const userChats = Array.from(chats.values()).filter(chat => chat.participants.includes(ws.sessionId));
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ws.send(JSON.stringify({ type: 'chats', chats: userChats }));
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broadcastUserList();
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}
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async function handleStartChat(ws, { users }) {
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const chatId = generateChatId();
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let participants = [ws.sessionId, ...users];
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participants = [...new Set(participants)];
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chats.set(chatId, { participants, messages: [] });
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await storage.setItem('chats', Array.from(chats.values()));
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notifyParticipants(participants);
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broadcastUserList();
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}
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async function handleEnterChat(ws, { chatId }) {
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const enteredChat = chats.get(chatId);
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const currentSession = sessions.get(ws.sessionId);
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currentSession.currentChat = chatId;
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if (enteredChat && enteredChat.participants.includes(ws.sessionId)) {
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ws.send(JSON.stringify({ type: 'chat', chat: enteredChat }));
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}
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}
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async function handleReconnect(ws, { sessionId }) {
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const userSession = sessions.get(sessionId);
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if (userSession) {
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sessions.set(ws.sessionId, userSession);
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ws.sessionId = sessionId;
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const userChats = Array.from(chats.values()).filter(chat => chat.participants.includes(ws.sessionId));
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ws.send(JSON.stringify({ type: 'chats', chats: userChats }));
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} else {
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console.log('Session not found:', sessionId);
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}
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broadcastUserList();
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}
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// Utility functions
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function generateSessionId() {
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return Math.random().toString(36).substring(2);
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}
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function generateChatId() {
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return Math.random().toString(36).substring(2);
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}
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function broadcastUserList() {
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const userList = Array.from(sessions.values()).map(user => ({
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username: user.username,
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sessionId: user.sessionId,
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currentChat: user.currentChat,
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language: user.language
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}));
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wss.clients.forEach(client => {
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if (client.readyState === WebSocket.OPEN) {
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client.send(JSON.stringify({ type: 'userList', users: userList }));
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}
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});
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}
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function notifyParticipants(participants) {
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participants.forEach(sessionId => {
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const participantSocket = Array.from(wss.clients).find(client => client.sessionId === sessionId);
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if (participantSocket && participantSocket.readyState === WebSocket.OPEN) {
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const userChats = Array.from(chats.entries())
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.filter(([id, chat]) => chat.participants.includes(sessionId))
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.map(([id, chat]) => ({ id, participants: chat.participants }));
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participantSocket.send(JSON.stringify({ type: 'chats', chats: userChats }));
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}
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});
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}
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async function handleAudioData(ws, data) {
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const sessionData = sessions.get(ws.sessionId);
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let { language, task } = sessionData;
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const formData = {
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task: task || 'transcribe',
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language,
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vad_filter: 'true',
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output: 'json',
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audio_file: {
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value: data,
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options: { filename: 'audio.ogg', contentType: 'audio/ogg' }
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}
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};
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if (!language || language === 'auto') {
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await detectLanguage(ws, formData);
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} else {
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await transcribeAudio(ws, formData, sessionData);
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}
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}
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async function detectLanguage(ws, formData) {
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try {
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const result = await requestPromise({
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method: 'POST',
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url: TTS_API_URL.replace('/asr', '/detect-language'),
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formData
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});
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const { language_code } = JSON.parse(result);
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if (language_code) {
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const sessionData = sessions.get(ws.sessionId);
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sessionData.language = language_code;
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ws.send(JSON.stringify({ type: 'languageDetected', languageDetected: language_code }));
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await transcribeAudio(ws, formData, sessionData);
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}
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} catch (err) {
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console.error('Language detection failed:', err);
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}
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}
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async function transcribeAudio(ws, formData, sessionData) {
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const start = new Date().getTime();
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queueCounter++;
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try {
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if(sessionData.language) {
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formData.language = sessionData.language;
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}
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formData.vad_filter = 'true';
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const body = await requestPromise({ method: 'POST', url: TTS_API_URL, formData });
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queueCounter--;
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const duration = new Date().getTime() - start;
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ws.send(JSON.stringify({
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type: 'text',
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queueCounter,
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duration,
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language: sessionData.language,
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text: body
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}));
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await handleChatTranscription(ws, body, sessionData);
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} catch (err) {
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console.error('Transcription failed:', err);
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}
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if (storeRecordings) {
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const timestamp = Date.now();
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fs.mkdir('rec', { recursive: true }, err => {
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if (err) console.error(err);
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else {
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fs.writeFile(`rec/audio${timestamp}.ogg`, formData.audio_file.value, err => {
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if (err) console.error(err);
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else console.log(`Audio data saved to rec/audio${timestamp}.ogg`);
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});
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}
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});
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}
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}
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async function handleChatTranscription(ws, body, sessionData) {
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if (sessionData.currentChat) {
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const chat = chats.get(sessionData.currentChat);
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if (chat) {
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let msg = { sender: sessionData.username, text: body, translations: [] };
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chat.messages.push(msg);
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for (let sessionId of chat.participants) {
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if (sessionId !== ws.sessionId) {
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const targetLang = sessions.get(sessionId)?.language || 'en';
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if (targetLang !== sessionData.language) {
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const translation = await translateText(body, sessionData.language, targetLang);
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msg.translations.push({ language: targetLang, text: translation });
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const participantSocket = Array.from(wss.clients).find(client => client.sessionId === sessionId);
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if (participantSocket && participantSocket.readyState === WebSocket.OPEN) {
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participantSocket.send(JSON.stringify({ type: 'text', text: `${sessionData.username}: ${translation}` }));
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const audioBuffer = await generateSpeech(translation);
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participantSocket.send(JSON.stringify({ type: 'audio', audio: audioBuffer.toString('base64') }));
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}
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} else {
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const participantSocket = Array.from(wss.clients).find(client => client.sessionId === sessionId);
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if (participantSocket && participantSocket.readyState === WebSocket.OPEN) {
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participantSocket.send(JSON.stringify({ type: 'text', text: `${sessionData.username}: ${body}` }));
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participantSocket.send(JSON.stringify({ type: 'audio', audio: formData.toString('base64') }));
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}
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}
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}
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}
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}
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}
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}
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async function translateText(originalText, originalLanguage, targetLanguage) {
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const prompt = `Translate this text from ${originalLanguage} to ${targetLanguage}: ${originalText}`;
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const response = await groq.chat.completions.create({
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messages: [
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{
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role: "system",
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content: `You are translating voice transcriptions from '${originalLanguage}' to '${targetLanguage}'. Reply with just the translation.`,
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},
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{
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role: "user",
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content: originalText,
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},
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],
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model: "llama3-8b-8192",
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});
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return response.choices[0]?.message?.content || "";
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}
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async function generateSpeech(text) {
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const mp3 = await openai.audio.speech.create({
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model: "tts-1",
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voice: "alloy",
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input: text,
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});
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return Buffer.from(await mp3.arrayBuffer());
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}
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// HTTP Server
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app.get('/', (req, res) => {
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res.sendFile(path.join(__dirname, 'chat-client.html'));
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});
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app.get('/audio.js', (req, res) => {
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res.sendFile(path.join(__dirname, 'audio.js'));
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});
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app.post('/log', (req, res) => {
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console.log(`[LOG ${new Date().toISOString()}] ${req.body.message}`);
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res.status(200).send('OK');
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});
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app.get('/wsurl', (req, res) => {
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res.status(200).send(process.env.WS_URL);
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});
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app.get('/settings', async (req, res) => {
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if (req.query.language) {
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language = req.query.language;
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await storage.setItem('language', language);
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}
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if (req.query.storeRecordings) {
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storeRecordings = req.query.storeRecordings;
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await storage.setItem('storeRecordings', storeRecordings);
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}
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res.status(200).send({ language, storeRecordings });
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});
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app.post('/settings', async (req, res) => {
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const { sessionId, language, storeRecordings, task } = req.body;
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const sessionData = sessions.get(sessionId);
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if (language) sessionData.language = language;
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if (storeRecordings !== undefined) sessionData.storeRecordings = storeRecordings;
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if (task) sessionData.task = task;
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res.status(200).send('OK');
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});
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app.post('/upload', (req, res) => {
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const timestamp = Date.now();
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console.log('Received audio data:', timestamp);
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fs.mkdir('rec', { recursive: true }, err => {
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if (err) return res.status(500).send('ERROR');
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const file = fs.createWriteStream(`rec/audio_slice_${timestamp}.ogg`);
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req.pipe(file);
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file.on('finish', () => res.status(200).send('OK'));
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});
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});
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app.get('/chats', (req, res) => {
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const { username } = req.query;
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const userChats = Array.from(chats.values()).filter(chat => chat.participants.includes(username));
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res.status(200).send({ chats: userChats });
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});
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app.listen(PORT_HTTP, () => {
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console.log(`Server listening on port ${PORT_HTTP}`);
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});
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// Helper to wrap request in a promise
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function requestPromise(options) {
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return new Promise((resolve, reject) => {
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request(options, (error, response, body) => {
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if (error) return reject(error);
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resolve(body);
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});
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});
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}
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