Miroslav Pejic
737 lines
22 KiB
JavaScript
Executable File
737 lines
22 KiB
JavaScript
Executable File
'use strict';
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// This user agent
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const userAgent = navigator.userAgent;
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// Check device
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const isMobileDevice = isMobile(userAgent);
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// WebSocket connection to the signaling server
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const socket = io();
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// WebRTC configuration
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const config = { iceServers: [{ urls: 'stun:stun.l.google.com:19302' }] };
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// DOM elements
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const attribution = document.getElementById('attribution');
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const randomImage = document.getElementById('randomImage');
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const sessionTime = document.getElementById('sessionTime');
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const githubDiv = document.getElementById('githubDiv');
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const signInPage = document.getElementById('signInPage');
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const usernameIn = document.getElementById('usernameIn');
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const signInBtn = document.getElementById('signInBtn');
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const roomPage = document.getElementById('roomPage');
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const callUsernameIn = document.getElementById('callUsernameIn');
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const hideBtn = document.getElementById('hideBtn');
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const callBtn = document.getElementById('callBtn');
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const swapCameraBtn = document.getElementById('swapCameraBtn');
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const videoBtn = document.getElementById('videoBtn');
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const audioBtn = document.getElementById('audioBtn');
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const hangUpBtn = document.getElementById('hangUpBtn');
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const localVideoContainer = document.getElementById('localVideoContainer');
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const localVideo = document.getElementById('localVideo');
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const localUsername = document.getElementById('localUsername');
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const remoteVideo = document.getElementById('remoteVideo');
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// User and connection information
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let userName;
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let connectedUser;
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let thisConnection;
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let camera = 'user';
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let stream;
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// On html page loaded...
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document.addEventListener('DOMContentLoaded', async function () {
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handleToolTip();
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handleLocalStorage();
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handleDirectJoin();
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handleListeners();
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fetchRandomImage();
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});
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// Handle config
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const elementsToHide = [
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{ condition: !app.showGithub, element: githubDiv },
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{ condition: !app.attribution, element: attribution },
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];
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elementsToHide.forEach(({ condition, element }) => {
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if (condition) elemDisplay(element, false);
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});
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async function checkHostPassword(maxRetries = 3, attempts = 0) {
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try {
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// Fetch host configuration
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const { data: config } = await axios.get('/api/hostPassword');
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if (config.isPasswordRequired) {
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// Show prompt for the password
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const { value: password } = await Swal.fire({
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title: 'Host Protected',
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text: 'Please enter the host password:',
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input: 'password',
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inputPlaceholder: 'Enter your password',
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inputAttributes: {
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autocapitalize: 'off',
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autocorrect: 'off',
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},
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imageUrl: 'assets/locked.png',
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imageWidth: 150,
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imageHeight: 150,
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allowOutsideClick: false,
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allowEscapeKey: false,
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showDenyButton: true,
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confirmButtonText: 'Submit',
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denyButtonText: `Cancel`,
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preConfirm: (password) => {
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if (!password) {
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Swal.showValidationMessage('Password cannot be empty');
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}
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return password;
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},
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});
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// If the user cancels, exit
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if (!password) {
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return;
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}
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// Validate the password
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const { data: validationResult } = await axios.post('/api/hostPasswordValidate', { password });
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if (validationResult.success) {
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await Swal.fire({
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icon: 'success',
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title: 'Access Granted',
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text: 'Password validated successfully!',
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timer: 1500,
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showConfirmButton: false,
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});
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signInPage.style.display = 'block';
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} else {
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attempts++;
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if (attempts < maxRetries) {
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await Swal.fire({
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icon: 'error',
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title: 'Invalid Password',
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text: `Please try again. (${attempts}/${maxRetries} attempts)`,
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});
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// Retry the process
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checkHostPassword(maxRetries, attempts);
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} else {
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await Swal.fire({
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icon: 'warning',
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title: 'Too Many Attempts',
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text: 'You have exceeded the maximum number of attempts. Please try again later.',
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});
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}
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}
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} else {
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// No password required
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signInPage.style.display = 'block';
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}
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} catch (error) {
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console.error('Error:', error);
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Swal.fire({
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icon: 'error',
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title: 'Error',
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text: 'An error occurred while joining the host.',
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});
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}
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}
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// Get Random Images
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async function fetchRandomImage() {
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if (sessionStorage.cachedImage) {
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// If there's cached data, use it
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randomImage.src = sessionStorage.cachedImage;
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console.log('Using cached image');
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return;
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}
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try {
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const response = await axios.get('/randomImage');
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const data = response.data;
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// Cache the image URL for subsequent calls
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sessionStorage.cachedImage = data.urls.regular;
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// Update the image source
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randomImage.src = sessionStorage.cachedImage;
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console.log('Fetched and cached image');
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// Create and display attribution
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const attributionText = `Photo by <a href="${data.user.links.html}?utm_source=call-me&utm_medium=referral" target="_blank">${data.user.name}</a> on <a href="https://unsplash.com/?utm_source=call-me&utm_medium=referral" target="_blank">Unsplash</a>`;
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// Assuming you have an element with id 'attribution' for the attribution text
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attribution.innerHTML = attributionText;
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} catch (error) {
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console.error('Error fetching image', error.message);
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}
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}
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// Initialize tooltips
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function handleToolTip() {
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const tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-toggle="tooltip"]'));
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const tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
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return new bootstrap.Tooltip(tooltipTriggerEl);
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});
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}
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// Handle localStorage data
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function handleLocalStorage() {
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usernameIn.value = localStorage.callMeUsername ? localStorage.callMeUsername : '';
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callUsernameIn.value = localStorage.callMeUsernameToCall ? localStorage.callMeUsernameToCall : '';
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}
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// Handle Room direct join
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function handleDirectJoin() {
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const usp = new URLSearchParams(window.location.search);
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const user = usp.get('user');
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const call = usp.get('call');
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const password = usp.get('password');
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console.log('Direct Join detected', { user, call, password });
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if (user) {
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// SignIn
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usernameIn.value = user;
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handleSignInClick();
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if (call) {
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// Call user if call is provided
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callUsernameIn.value = call;
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handleCallClick();
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}
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}
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if (!password) checkHostPassword();
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}
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// Session Time
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function startSessionTime() {
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console.log('Start session time');
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sessionTime.style.display = 'inline-flex';
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let sessionElapsedTime = 0;
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setInterval(function printTime() {
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sessionElapsedTime++;
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sessionTime.innerText = secondsToHms(sessionElapsedTime);
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}, 1000);
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}
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// Session Time in h/m/s
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function secondsToHms(d) {
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d = Number(d);
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let h = Math.floor(d / 3600);
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let m = Math.floor((d % 3600) / 60);
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let s = Math.floor((d % 3600) % 60);
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let hDisplay = h > 0 ? h + 'h' : '';
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let mDisplay = m > 0 ? m + 'm' : '';
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let sDisplay = s > 0 ? s + 's' : '';
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return hDisplay + ' ' + mDisplay + ' ' + sDisplay;
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}
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// WebSocket event listeners
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socket.on('connect', handleSocketConnect);
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socket.on('message', handleMessage);
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socket.on('error', handleSocketError);
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// Handle WebSocket connection establishment
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function handleSocketConnect() {
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console.log('Connected to the signaling server');
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}
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// Handle WebSocket errors
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function handleSocketError(err) {
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handleError('Socket error', err.message);
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}
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// Handle incoming messages based on type
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function handleMessage(data) {
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const { type } = data;
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console.log('Got message', type);
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switch (type) {
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case 'ping':
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handlePing(data);
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break;
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case 'signIn':
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handleSignIn(data);
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break;
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case 'notfound':
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handleNotFound(data);
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break;
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case 'offerAccept':
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offerAccept(data);
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break;
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case 'offerCreate':
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offerCreate();
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break;
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case 'offer':
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handleOffer(data);
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break;
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case 'answer':
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handleAnswer(data);
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break;
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case 'candidate':
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handleCandidate(data);
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break;
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case 'leave':
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handleLeave();
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break;
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case 'error':
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handleError(data.message, data.message);
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break;
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default:
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break;
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}
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}
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// helpers
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function isMobile(userAgent) {
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return !!/Android|webOS|iPhone|iPad|iPod|BB10|BlackBerry|IEMobile|Opera Mini|Mobile|mobile/i.test(userAgent || '');
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}
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// Enumerate Devices for camera swap functionality
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function handleEnumerateDevices() {
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navigator.mediaDevices
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.enumerateDevices()
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.then((devices) => {
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const videoInputs = devices.filter((device) => device.kind === 'videoinput');
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videoInputs.length > 1 && isMobileDevice
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? swapCameraBtn.addEventListener('click', swapCamera)
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: elemDisplay(swapCameraBtn, false);
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})
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.catch((error) => {
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handleError('Error enumerating devices', error);
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});
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}
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// Handle Listeners
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function handleListeners() {
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// Event listeners
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signInBtn.addEventListener('click', handleSignInClick);
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hideBtn.addEventListener('click', toggleLocalVideo);
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callBtn.addEventListener('click', handleCallClick);
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videoBtn.addEventListener('click', handleVideoClick);
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audioBtn.addEventListener('click', handleAudioClick);
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hangUpBtn.addEventListener('click', handleHangUpClick);
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localVideoContainer.addEventListener('click', toggleFullScreen);
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remoteVideo.addEventListener('click', toggleFullScreen);
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// Add keyUp listeners
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callUsernameIn.addEventListener('keyup', (e) => handleKeyUp(e, handleCallClick));
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usernameIn.addEventListener('keyup', (e) => handleKeyUp(e, handleSignInClick));
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}
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// Handle element display
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function elemDisplay(element, display, mode = 'block') {
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if (element) element.style.display = display ? mode : 'none';
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}
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// Generic keyUp handler
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function handleKeyUp(e, callback) {
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if (e.key === 'Enter') {
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e.preventDefault();
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callback();
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}
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}
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// Handle sign-in button click
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function handleSignInClick() {
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userName = usernameIn.value.trim();
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if (userName.length > 0) {
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sendMsg({
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type: 'signIn',
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name: userName,
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});
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localStorage.callMeUsername = userName;
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}
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}
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// Toggle local video visibility
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function toggleLocalVideo() {
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localVideoContainer.classList.toggle('hide');
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}
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// Handle call button click
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function handleCallClick() {
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const callToUsername = callUsernameIn.value.trim();
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if (callToUsername.length > 0) {
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if (callToUsername === userName) {
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callUsernameIn.value = '';
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handleError('You cannot call yourself.');
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return;
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}
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connectedUser = callToUsername;
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sendMsg({
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type: 'offerAccept',
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from: userName,
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to: callToUsername,
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});
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localStorage.callMeUsernameToCall = callToUsername;
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popupMsg(`You are calling ${callToUsername}.<br/>Please wait for them to answer.`);
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} else {
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handleError('Please enter a username to call.');
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}
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}
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// Toggle video stream
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function handleVideoClick() {
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const videoTrack = stream.getVideoTracks()[0];
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videoTrack.enabled = !videoTrack.enabled;
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videoBtn.classList.toggle('btn-danger');
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}
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// Toggle audio stream
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function handleAudioClick() {
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const audioTrack = stream.getAudioTracks()[0];
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audioTrack.enabled = !audioTrack.enabled;
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audioBtn.classList.toggle('btn-danger');
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}
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// Function to swap between user-facing and environment cameras
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function swapCamera() {
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camera = camera === 'user' ? 'environment' : 'user';
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const videoConstraints = camera === 'user' ? true : { facingMode: { exact: camera } };
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navigator.mediaDevices
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.getUserMedia({ video: videoConstraints })
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.then((newStream) => {
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// Stop the previous video track
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const videoTrack = stream.getVideoTracks()[0];
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if (videoTrack) {
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videoTrack.stop();
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}
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// Refresh video streams
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refreshLocalVideoStream(newStream);
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refreshPeerVideoStreams(newStream);
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// Check video/audio status
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checkVideoAudioStatus();
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})
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.catch((error) => {
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handleError('Failed to swap the camera.', error);
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});
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}
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// Update the local video stream
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function refreshLocalVideoStream(newStream) {
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const videoTrack = newStream.getVideoTracks()[0];
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if (!videoTrack) {
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handleError('No video track available in the newStream.');
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return;
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}
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const audioTrack = stream.getAudioTracks()[0];
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if (!audioTrack) {
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handleError('No audio track available in the stream.');
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return;
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}
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const updatedStream = new MediaStream([videoTrack, audioTrack]); // Create a new stream only with valid tracks
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stream = updatedStream;
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localVideo.srcObject = stream;
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}
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// Update the video stream for all peers
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function refreshPeerVideoStreams(newStream) {
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if (!thisConnection) return;
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const videoTrack = newStream.getVideoTracks()[0];
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if (!videoTrack) {
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handleError('No video track available for peer connections.');
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return;
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}
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const videoSender = thisConnection.getSenders().find((sender) => sender.track && sender.track.kind === 'video');
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if (videoSender) {
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videoSender.replaceTrack(videoTrack).catch((error) => {
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handleError(`Replacing track error: ${error.message}`);
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});
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}
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}
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// Check video audio status
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function checkVideoAudioStatus() {
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if (videoBtn.classList.contains('btn-danger')) {
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const videoTrack = stream.getVideoTracks()[0];
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videoTrack.enabled = false;
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}
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if (audioBtn.classList.contains('btn-danger')) {
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const audioTrack = stream.getAudioTracks()[0];
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audioTrack.enabled = false;
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}
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}
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// Handle hang-up button click
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function handleHangUpClick() {
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sendMsg({ type: 'leave', name: socket.recipient });
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handleLeave();
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}
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// Toggle video full screen mode
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function toggleFullScreen(e) {
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if (!e.target.srcObject) return;
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document.fullscreenElement ? document.exitFullscreen() : e.target.requestFullscreen?.();
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}
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// Handle ping message from the server
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function handlePing(data) {
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const { iceServers } = data;
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if (iceServers) {
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config.iceServers = iceServers;
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}
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sendMsg({
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type: 'pong',
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message: {
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client: 'Hello Server!',
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agent: userAgent,
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},
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});
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}
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// Handle user not found from the server
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function handleNotFound(data) {
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const { username } = data;
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callUsernameIn.value = '';
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handleError(`Username ${username} not found!`);
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}
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// Handle sign-in response from the server
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function handleSignIn(data) {
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const { success, message } = data;
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if (!success) {
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handleError(message);
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if (!message.startsWith('Invalid username')) {
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setTimeout(handleHangUpClick, 3000);
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}
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} else {
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githubDiv.style.display = 'none';
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attribution.style.display = 'none';
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signInPage.style.display = 'none';
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roomPage.style.display = 'block';
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navigator.mediaDevices
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.getUserMedia({ video: true, audio: true })
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.then((myStream) => {
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stream = myStream;
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localVideo.srcObject = stream;
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localVideo.playsInline = true;
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localVideo.autoplay = true;
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localVideo.muted = true;
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localVideo.volume = 0;
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localVideo.controls = false;
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localUsername.innerText = userName;
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initializeConnection();
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handleEnumerateDevices();
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})
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.catch((error) => {
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handleError('Failed to access camera and microphone.', error);
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});
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}
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}
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// Initialize WebRTC connection
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function initializeConnection() {
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thisConnection = new RTCPeerConnection(config);
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stream.getTracks().forEach((track) => thisConnection.addTrack(track, stream));
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thisConnection.ontrack = (e) => {
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if (e.streams && e.streams[0]) {
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remoteVideo.srcObject = e.streams[0];
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remoteVideo.playsInline = true;
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remoteVideo.autoplay = true;
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remoteVideo.controls = false;
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//remoteVideo.click(); // The remote video start in full screen mode if supported
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startSessionTime();
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console.log('Remote stream set to video element');
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} else {
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handleError('No stream available in the ontrack event.');
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}
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};
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thisConnection.onicecandidate = (event) => {
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if (event.candidate) {
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sendMsg({
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type: 'candidate',
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candidate: event.candidate,
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});
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}
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};
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// For debugging purposes
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thisConnection.onconnectionstatechange = (event) => {
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console.log('Connection state change:', thisConnection.connectionState);
|
|
};
|
|
|
|
thisConnection.oniceconnectionstatechange = (event) => {
|
|
console.log('ICE connection state change:', thisConnection.iceConnectionState);
|
|
};
|
|
}
|
|
|
|
// Create and send an offer
|
|
function offerCreate() {
|
|
if (!thisConnection) {
|
|
initializeConnection();
|
|
}
|
|
thisConnection
|
|
.createOffer()
|
|
.then((offer) => {
|
|
thisConnection.setLocalDescription(offer);
|
|
sendMsg({
|
|
type: 'offer',
|
|
offer,
|
|
});
|
|
callUsernameIn.style.display = 'none';
|
|
})
|
|
.catch((error) => {
|
|
handleError('Error when creating an offer.', error);
|
|
});
|
|
}
|
|
|
|
// Accept incoming offer
|
|
function offerAccept(data) {
|
|
sound('ring');
|
|
Swal.fire({
|
|
position: 'center',
|
|
imageUrl: 'assets/ring.png',
|
|
imageWidth: 284,
|
|
imageHeight: 120,
|
|
text: 'Do you want to accept call from ' + data.from + ' ?',
|
|
showDenyButton: true,
|
|
confirmButtonText: `Yes`,
|
|
denyButtonText: `No`,
|
|
timerProgressBar: true,
|
|
timer: 10000,
|
|
showClass: { popup: 'animate__animated animate__fadeInDown' },
|
|
hideClass: { popup: 'animate__animated animate__fadeOutUp' },
|
|
}).then((result) => {
|
|
if (result.isConfirmed) {
|
|
callUsernameIn.style.display = 'none';
|
|
callBtn.style.display = 'none';
|
|
data.type = 'offerCreate';
|
|
socket.recipient = data.from;
|
|
} else {
|
|
data.type = 'offerDecline';
|
|
}
|
|
sendMsg({ ...data });
|
|
});
|
|
}
|
|
|
|
// Handle incoming offer
|
|
function handleOffer(data) {
|
|
const { offer, name } = data;
|
|
connectedUser = name;
|
|
initializeConnection();
|
|
thisConnection.setRemoteDescription(new RTCSessionDescription(offer));
|
|
thisConnection
|
|
.createAnswer()
|
|
.then((answer) => {
|
|
thisConnection.setLocalDescription(answer);
|
|
sendMsg({
|
|
type: 'answer',
|
|
answer,
|
|
});
|
|
})
|
|
.catch((error) => {
|
|
handleError('Error when creating an answer.', error);
|
|
});
|
|
}
|
|
|
|
// Handle incoming answer
|
|
function handleAnswer(data) {
|
|
const { answer } = data;
|
|
thisConnection.setRemoteDescription(new RTCSessionDescription(answer)).catch((error) => {
|
|
handleError('Error when set remote description.', error);
|
|
});
|
|
}
|
|
|
|
// Handle incoming ICE candidate
|
|
function handleCandidate(data) {
|
|
const { candidate } = data;
|
|
callBtn.style.display = 'none';
|
|
thisConnection.addIceCandidate(new RTCIceCandidate(candidate)).catch((error) => {
|
|
handleError('Error when add ice candidate.', error);
|
|
callBtn.style.display = 'inline';
|
|
});
|
|
}
|
|
|
|
// Play audio sound
|
|
async function sound(name) {
|
|
const sound = './assets/' + name + '.wav';
|
|
const audio = new Audio(sound);
|
|
try {
|
|
audio.volume = 0.5;
|
|
await audio.play();
|
|
} catch (err) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Handle leaving the room
|
|
function handleLeave() {
|
|
// Stop local video tracks
|
|
if (localVideo.srcObject != null) {
|
|
localVideo.srcObject.getTracks().forEach((track) => track.stop());
|
|
localVideo.srcObject = null;
|
|
}
|
|
// Stop remote video tracks
|
|
if (remoteVideo.srcObject != null) {
|
|
remoteVideo.srcObject.getTracks().forEach((track) => track.stop());
|
|
remoteVideo.srcObject = null;
|
|
}
|
|
// Disconnect from server
|
|
if (thisConnection) {
|
|
thisConnection.close();
|
|
thisConnection = null;
|
|
}
|
|
// GoTo homepage
|
|
connectedUser = null;
|
|
window.location.href = '/';
|
|
}
|
|
|
|
// Handle and display errors
|
|
function handleError(message, error = false, position = 'center', timer = 6000) {
|
|
if (error) console.error(error);
|
|
sound('notify');
|
|
Swal.fire({
|
|
position,
|
|
icon: 'warning',
|
|
html: message,
|
|
timerProgressBar: true,
|
|
timer,
|
|
showClass: { popup: 'animate__animated animate__fadeInDown' },
|
|
hideClass: { popup: 'animate__animated animate__fadeOutUp' },
|
|
});
|
|
}
|
|
|
|
// Display Message to user
|
|
function popupMsg(message, position = 'top', timer = 4000) {
|
|
Swal.fire({
|
|
position,
|
|
html: message,
|
|
timerProgressBar: true,
|
|
timer,
|
|
showClass: { popup: 'animate__animated animate__fadeInDown' },
|
|
hideClass: { popup: 'animate__animated animate__fadeOutUp' },
|
|
});
|
|
}
|
|
|
|
// Send messages to the server
|
|
function sendMsg(message) {
|
|
if (connectedUser) {
|
|
message.name = connectedUser;
|
|
}
|
|
socket.emit('message', message);
|
|
}
|
|
|
|
// Clean up before window close or reload
|
|
window.onbeforeunload = () => {
|
|
handleHangUpClick();
|
|
};
|