├── .gitignore
├── README.md
├── package-lock.json
├── package.json
├── public
    ├── chat.html
    ├── css
    │   └── style.css
    ├── index.html
    └── js
    │   └── main.js
├── server.js
└── utils
    ├── messages.js
    └── users.js


/.gitignore:
--------------------------------------------------------------------------------
  1 | # Logs
  2 | logs
  3 | *.log
  4 | npm-debug.log*
  5 | yarn-debug.log*
  6 | yarn-error.log*
  7 | lerna-debug.log*
  8 | 
  9 | # Diagnostic reports (https://nodejs.org/api/report.html)
 10 | report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 11 | 
 12 | # Runtime data
 13 | pids
 14 | *.pid
 15 | *.seed
 16 | *.pid.lock
 17 | 
 18 | # Directory for instrumented libs generated by jscoverage/JSCover
 19 | lib-cov
 20 | 
 21 | # Coverage directory used by tools like istanbul
 22 | coverage
 23 | *.lcov
 24 | 
 25 | # nyc test coverage
 26 | .nyc_output
 27 | 
 28 | # Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
 29 | .grunt
 30 | 
 31 | # Bower dependency directory (https://bower.io/)
 32 | bower_components
 33 | 
 34 | # node-waf configuration
 35 | .lock-wscript
 36 | 
 37 | # Compiled binary addons (https://nodejs.org/api/addons.html)
 38 | build/Release
 39 | 
 40 | # Dependency directories
 41 | node_modules/
 42 | jspm_packages/
 43 | 
 44 | # TypeScript v1 declaration files
 45 | typings/
 46 | 
 47 | # TypeScript cache
 48 | *.tsbuildinfo
 49 | 
 50 | # Optional npm cache directory
 51 | .npm
 52 | 
 53 | # Optional eslint cache
 54 | .eslintcache
 55 | 
 56 | # Microbundle cache
 57 | .rpt2_cache/
 58 | .rts2_cache_cjs/
 59 | .rts2_cache_es/
 60 | .rts2_cache_umd/
 61 | 
 62 | # Optional REPL history
 63 | .node_repl_history
 64 | 
 65 | # Output of 'npm pack'
 66 | *.tgz
 67 | 
 68 | # Yarn Integrity file
 69 | .yarn-integrity
 70 | 
 71 | # dotenv environment variables file
 72 | .env
 73 | .env.test
 74 | 
 75 | # parcel-bundler cache (https://parceljs.org/)
 76 | .cache
 77 | 
 78 | # Next.js build output
 79 | .next
 80 | 
 81 | # Nuxt.js build / generate output
 82 | .nuxt
 83 | dist
 84 | 
 85 | # Gatsby files
 86 | .cache/
 87 | # Comment in the public line in if your project uses Gatsby and *not* Next.js
 88 | # https://nextjs.org/blog/next-9-1#public-directory-support
 89 | # public
 90 | 
 91 | # vuepress build output
 92 | .vuepress/dist
 93 | 
 94 | # Serverless directories
 95 | .serverless/
 96 | 
 97 | # FuseBox cache
 98 | .fusebox/
 99 | 
100 | # DynamoDB Local files
101 | .dynamodb/
102 | 
103 | # TernJS port file
104 | .tern-port


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # ZoomCord
 2 | Google Meet / Zoom / Discord clone
 3 | 
 4 | A web application for video meeting + realtime text chat.
 5 | Developed with Node.js, Express, Peer.js and Socket.io.
 6 | 
 7 | ## Features
 8 | - [x] Join and leave room
 9 | - [x] Group video meeting
10 | - [x] Group text chat
11 | - [x] Unique username checking
12 | - [x] 'User is typing...'
13 | - [ ] Limit number of users per room
14 | 
15 | ## Usage
16 | ```
17 | npm install
18 | npm run dev
19 | 
20 | npm i -g peer
21 | peerjs --port 3001
22 | 
23 | Go to localhost:3000
24 | ```
25 | 


--------------------------------------------------------------------------------
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1422 |       "integrity": "sha1-FrXK/Afb42dsGxmZF3gj1lA6yww=",
1423 |       "dev": true,
1424 |       "requires": {
1425 |         "prepend-http": "^2.0.0"
1426 |       }
1427 |     },
1428 |     "utils-merge": {
1429 |       "version": "1.0.1",
1430 |       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
1431 |       "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
1432 |     },
1433 |     "vary": {
1434 |       "version": "1.1.2",
1435 |       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
1436 |       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
1437 |     },
1438 |     "widest-line": {
1439 |       "version": "3.1.0",
1440 |       "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-3.1.0.tgz",
1441 |       "integrity": "sha512-NsmoXalsWVDMGupxZ5R08ka9flZjjiLvHVAWYOKtiKM8ujtZWr9cRffak+uSE48+Ob8ObalXpwyeUiyDD6QFgg==",
1442 |       "dev": true,
1443 |       "requires": {
1444 |         "string-width": "^4.0.0"
1445 |       }
1446 |     },
1447 |     "wrappy": {
1448 |       "version": "1.0.2",
1449 |       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
1450 |       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
1451 |       "dev": true
1452 |     },
1453 |     "write-file-atomic": {
1454 |       "version": "3.0.3",
1455 |       "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-3.0.3.tgz",
1456 |       "integrity": "sha512-AvHcyZ5JnSfq3ioSyjrBkH9yW4m7Ayk8/9My/DD9onKeu/94fwrMocemO2QAJFAlnnDN+ZDS+ZjAR5ua1/PV/Q==",
1457 |       "dev": true,
1458 |       "requires": {
1459 |         "imurmurhash": "^0.1.4",
1460 |         "is-typedarray": "^1.0.0",
1461 |         "signal-exit": "^3.0.2",
1462 |         "typedarray-to-buffer": "^3.1.5"
1463 |       }
1464 |     },
1465 |     "ws": {
1466 |       "version": "7.4.0",
1467 |       "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.0.tgz",
1468 |       "integrity": "sha512-kyFwXuV/5ymf+IXhS6f0+eAFvydbaBW3zjpT6hUdAh/hbVjTIB5EHBGi0bPoCLSK2wcuz3BrEkB9LrYv1Nm4NQ=="
1469 |     },
1470 |     "xdg-basedir": {
1471 |       "version": "4.0.0",
1472 |       "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-4.0.0.tgz",
1473 |       "integrity": "sha512-PSNhEJDejZYV7h50BohL09Er9VaIefr2LMAf3OEmpCkjOi34eYyQYAXUTjEQtZJTKcF0E2UKTh+osDLsgNim9Q==",
1474 |       "dev": true
1475 |     }
1476 |   }
1477 | }
1478 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "chatcord",
 3 |   "version": "1.0.0",
 4 |   "description": "Real time chat",
 5 |   "main": "server.js",
 6 |   "scripts": {
 7 |     "start": "node server",
 8 |     "dev": "nodemon server"
 9 |   },
10 |   "author": "Khairul Imran",
11 |   "license": "ISC",
12 |   "dependencies": {
13 |     "express": "^4.17.1",
14 |     "moment": "^2.29.1",
15 |     "socket.io": "^3.0.1"
16 |   },
17 |   "devDependencies": {
18 |     "nodemon": "^2.0.6"
19 |   }
20 | }
21 | 


--------------------------------------------------------------------------------
/public/chat.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 | <head>
 4 |   <meta charset="UTF-8">
 5 |   <meta name="viewport" content="width=device-width, initial-scale=1.0">
 6 |   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous" />
 7 |   <link rel="stylesheet" href="css/style.css">
 8 |   <title>ZoomCord</title>
 9 | </head>
10 | <body>
11 |   <div class="chat-container">
12 |     <header class="chat-header">
13 |       <h1><i class="fas fa-video"></i> ZoomCord</h1>
14 |       <a href="index.html" class="btn">Leave Room</a>
15 |     </header>
16 |     <div id="video-grid">
17 |     </div>
18 |     <main class="chat-main">
19 |       <div class="chat-sidebar">
20 |         <h3><i class="fas fa-comments"></i> Room Name:</h3>
21 |         <h2 id="room-name"></h2>
22 |         <h3><i class="fas fa-users"></i> Users</h3>
23 |         <ul id="users"></ul>
24 |       </div>
25 |       <div class="chat-messages">
26 |         <div class="is-typing" id="is-typing"></div>
27 |       </div>
28 |     </main>
29 |     <div class="chat-form-container">
30 |       <form id="chat-form">
31 |         <input
32 |           id="msg"
33 |           type="text"
34 |           placeholder="Enter Message"
35 |           required
36 |           autocomplete="off"
37 |         />
38 |         <button class="btn"><i class="fas fa-paper-plane"></i> Send</button>
39 |       </form>
40 |     </div>
41 |   </div>
42 | 
43 |   <script
44 |   src="https://cdnjs.cloudflare.com/ajax/libs/qs/6.9.2/qs.min.js"
45 |   integrity="sha256-TDxXjkAUay70ae/QJBEpGKkpVslXaHHayklIVglFRT4="
46 |   crossorigin="anonymous"
47 |   ></script>
48 |   <script defer src="https://unpkg.com/peerjs@1.3.1/dist/peerjs.min.js"></script>
49 |   <script defer src="/socket.io/socket.io.js"></script>
50 |   <script defer src="js/main.js"></script>
51 | </body>
52 | </html>


--------------------------------------------------------------------------------
/public/css/style.css:
--------------------------------------------------------------------------------
  1 | @import url('https://fonts.googleapis.com/css?family=Roboto&display=swap');
  2 | 
  3 | :root {
  4 | 	--dark-color-a: #00308F;
  5 | 	--dark-color-b: #063594df;
  6 | 	--light-color: #e6e9ff;
  7 | 	--success-color: #5cb85c;
  8 | 	--error-color: #d9534f;
  9 | }
 10 | 
 11 | * {
 12 | 	box-sizing: border-box;
 13 | 	margin: 0;
 14 | 	padding: 0;
 15 | }
 16 | 
 17 | body {
 18 | 	font-family: 'Roboto', sans-serif;
 19 | 	font-size: 16px;
 20 | 	background: var(--light-color);
 21 | 	margin: 20px;
 22 | }
 23 | 
 24 | ul {
 25 | 	list-style: none;
 26 | }
 27 | 
 28 | a {
 29 | 	text-decoration: none;
 30 | }
 31 | 
 32 | .btn {
 33 | 	cursor: pointer;
 34 | 	padding: 5px 15px;
 35 | 	background: var(--light-color);
 36 | 	color: var(--dark-color-a);
 37 | 	border: 0;
 38 | 	font-size: 17px;
 39 | }
 40 | 
 41 | /* Chat Page */
 42 | 
 43 | .chat-container {
 44 | 	max-width: 1100px;
 45 | 	background: #fff;
 46 | 	margin: 30px auto;
 47 | 	overflow: hidden;
 48 | }
 49 | 
 50 | .chat-header {
 51 | 	background: var(--dark-color-a);
 52 | 	color: #fff;
 53 | 	border-top-left-radius: 5px;
 54 | 	border-top-right-radius: 5px;
 55 | 	padding: 15px;
 56 | 	display: flex;
 57 | 	align-items: center;
 58 | 	justify-content: space-between;
 59 | }
 60 | 
 61 | .chat-main {
 62 | 	display: grid;
 63 | 	grid-template-columns: 1fr 3fr;
 64 | }
 65 | 
 66 | .chat-sidebar {
 67 | 	background: var(--dark-color-b);
 68 | 	color: #fff;
 69 | 	padding: 20px 20px 60px;
 70 | 	overflow-y: scroll;
 71 | }
 72 | 
 73 | .chat-sidebar h2 {
 74 | 	font-size: 20px;
 75 | 	background: rgba(0, 0, 0, 0.1);
 76 | 	padding: 10px;
 77 | 	margin-bottom: 20px;
 78 | }
 79 | 
 80 | .chat-sidebar h3 {
 81 | 	margin-bottom: 15px;
 82 | }
 83 | 
 84 | .chat-sidebar ul li {
 85 | 	padding: 10px 0;
 86 | }
 87 | 
 88 | .chat-messages {
 89 | 	padding: 30px;
 90 | 	max-height: 500px;
 91 | 	overflow-y: scroll;
 92 | }
 93 | 
 94 | .chat-messages .message {
 95 | 	padding: 10px;
 96 | 	margin-bottom: 15px;
 97 | 	background-color: var(--light-color);
 98 | 	border-radius: 5px;
 99 | 	overflow-wrap: break-word;
100 | }
101 | 
102 | .chat-messages .message .meta {
103 | 	font-size: 15px;
104 | 	font-weight: bold;
105 | 	color: var(--dark-color-b);
106 | 	opacity: 0.7;
107 | 	margin-bottom: 7px;
108 | }
109 | 
110 | .chat-messages .message .meta span {
111 | 	color: #777;
112 | }
113 | 
114 | .chat-messages .is-typing {
115 | 	margin-bottom: 7px;
116 | }
117 | 
118 | .chat-form-container {
119 | 	padding: 20px 30px;
120 | 	background-color: var(--dark-color-a);
121 | }
122 | 
123 | .chat-form-container form {
124 | 	display: flex;
125 | }
126 | 
127 | .chat-form-container input[type='text'] {
128 | 	font-size: 16px;
129 | 	padding: 5px;
130 | 	height: 40px;
131 | 	flex: 1;
132 | }
133 | 
134 | /* Join Page */
135 | .join-container {
136 | 	max-width: 500px;
137 | 	margin: 80px auto;
138 | 	color: #fff;
139 | }
140 | 
141 | .join-header {
142 | 	text-align: center;
143 | 	padding: 20px;
144 | 	background: var(--dark-color-a);
145 | 	border-top-left-radius: 5px;
146 | 	border-top-right-radius: 5px;
147 | }
148 | 
149 | .join-main {
150 | 	padding: 30px 40px;
151 | 	background: var(--dark-color-b);
152 | }
153 | 
154 | .join-main p {
155 | 	margin-bottom: 20px;
156 | }
157 | 
158 | .join-main .form-control {
159 | 	margin-bottom: 20px;
160 | }
161 | 
162 | .join-main label {
163 | 	display: block;
164 | 	margin-bottom: 5px;
165 | }
166 | 
167 | .join-main input[type='text'] {
168 | 	font-size: 16px;
169 | 	padding: 5px;
170 | 	height: 40px;
171 | 	width: 100%;
172 | }
173 | 
174 | .join-main select {
175 | 	font-size: 16px;
176 | 	padding: 5px;
177 | 	height: 40px;
178 | 	width: 100%;
179 | }
180 | 
181 | .join-main .btn {
182 | 	margin-top: 20px;
183 | 	width: 100%;
184 | }
185 | 
186 | @media (max-width: 700px) {
187 | 	.chat-main {
188 | 		display: block;
189 | 	}
190 | 
191 | 	.chat-sidebar {
192 | 		display: none;
193 | 	}
194 | }
195 | 
196 | #video-grid {
197 | 	display: grid;
198 | 	grid-template-columns: repeat(auto-fill, 350px);
199 | 	grid-auto-rows: 350px;
200 | 	padding: 30px 20px;
201 | 	background-color: var(--dark-color-b);
202 | }
203 |   
204 | #video-grid video {
205 | 	width: 100%;
206 | 	height: 100%;
207 | 	object-fit: cover; /* zoom in to make it square */
208 | }


--------------------------------------------------------------------------------
/public/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 | 	<head>
 4 | 		<meta charset="UTF-8" />
 5 | 		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
 6 | 		<meta http-equiv="X-UA-Compatible" content="ie=edge" />
 7 | 		<link
 8 | 			rel="stylesheet"
 9 | 			href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css"
10 | 			integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk="
11 | 			crossorigin="anonymous"
12 | 		/>
13 | 		<link rel="stylesheet" href="css/style.css" />
14 | 		<title>ZoomCord</title>
15 | 	</head>
16 | 	<body>
17 | 		<div class="join-container">
18 | 			<header class="join-header">
19 | 				<h1><i class="fas fa-video"></i> ZoomCord</h1>
20 | 			</header>
21 | 			<main class="join-main">
22 | 				<form action="chat.html">
23 | 					<div class="form-control">
24 | 						<label for="username">Username</label>
25 | 						<input
26 | 							type="text"
27 | 							name="username"
28 | 							id="username"
29 | 							placeholder="Enter username..."
30 | 							required
31 | 						/>
32 | 					</div>
33 | 					<div class="form-control">
34 | 						<label for="room">Room</label>
35 | 						<select name="room" id="room">
36 | 							<option value="Malaysia">Malaysia</option>
37 | 							<option value="Indonesia">Indonesia</option>
38 | 							<option value="Singapore">Singapore</option>
39 | 						</select>
40 | 					</div>
41 | 					<button type="submit" class="btn">Join Chat</button>
42 | 				</form>
43 | 			</main>
44 | 		</div>
45 | 	</body>
46 | </html>


--------------------------------------------------------------------------------
/public/js/main.js:
--------------------------------------------------------------------------------
  1 | const chatForm = document.getElementById('chat-form');
  2 | const chatMessages = document.querySelector('.chat-messages');
  3 | const roomName = document.getElementById('room-name');
  4 | const userList = document.getElementById('users');
  5 | const inputMessage =document.getElementById('msg');
  6 | const TYPING_TIMER_LENGTH = 400; // ms
  7 | 
  8 | const videoGrid = document.getElementById('video-grid')
  9 | const myVideo = document.createElement('video')
 10 | myVideo.muted = true
 11 | 
 12 | const myPeer = new Peer(undefined, {
 13 |     host: 'localhost',
 14 |     port: '3001'
 15 | })
 16 | const peers = {}
 17 | 
 18 | let typing = false;
 19 | let lastTypingTime;
 20 | 
 21 | // Get username and room from URL
 22 | // ignoreQueryPrefix ignores the leading question mark. Can also use require('query-string')
 23 | const { username, room} = Qs.parse(location.search, {
 24 |     ignoreQueryPrefix: true
 25 | });
 26 | 
 27 | // Insert into io('url') if different than window.location / domain
 28 | const socket = io();
 29 | 
 30 | // Prevent duplicate username
 31 | socket.on('sameName', () => {
 32 |     alert("Username already exist, please choose another username.");
 33 |     window.history.back();
 34 | });
 35 | 
 36 | // Prevent entering invalid room
 37 | socket.on('roomNotValid', () => {
 38 |     alert("Room does not exist, please only select either Malaysia, Indonesia or Singapore.");
 39 |     window.history.back();
 40 | });
 41 | 
 42 | navigator.mediaDevices.getUserMedia({
 43 |     video: true,
 44 |     audio: true
 45 | }).then(stream => {
 46 |     addVideoStream(myVideo, stream)
 47 | 
 48 |     myPeer.on('call', call => {
 49 |         call.answer(stream)
 50 |         const video = document.createElement('video')
 51 |         call.on('stream', userVideoStream => {
 52 |             addVideoStream(video, userVideoStream)
 53 |         })
 54 |     })
 55 | 
 56 |     socket.on('user-connected', userId => {
 57 |         // connectToNewUser(userId, stream)
 58 |         console.log(userId)
 59 |         // make sure myPeer.on('call') has been executed first
 60 |         setTimeout(connectToNewUser,1000,userId,stream)
 61 |     })
 62 | })
 63 | 
 64 | socket.on('user-disconnected', userId => {
 65 |     if (peers[userId]) peers[userId].close()
 66 | })
 67 | 
 68 | myPeer.on('open', userPeerId => {
 69 |     // On join chatroom
 70 |     socket.emit('joinRoom', { userPeerId, username, room });
 71 | })
 72 | 
 73 | function connectToNewUser(userId, stream) {
 74 |     const call = myPeer.call(userId, stream)
 75 |     const video = document.createElement('video')
 76 |     call.on('stream', userVideoStream => {
 77 |         addVideoStream(video, userVideoStream)
 78 |     })
 79 |     call.on('close', () => {
 80 |         video.remove()
 81 |     })
 82 | 
 83 |     peers[userId] = call
 84 | }
 85 | 
 86 | function addVideoStream(video, stream) {
 87 |     video.srcObject = stream
 88 |     video.addEventListener('loadedmetadata', () => {
 89 |         video.play()
 90 |     })
 91 |     videoGrid.append(video)
 92 | }
 93 | 
 94 | // Get room and users
 95 | socket.on('roomUsers', ({ room, users }) => {
 96 |     outputRoomName(room);
 97 |     outputUsers(users);
 98 | });
 99 | 
100 | inputMessage.addEventListener("input", () => {
101 |     updateTyping();
102 | });
103 | 
104 | // Updates the typing event
105 | const updateTyping = () => {
106 |     if (!typing) {
107 |         typing = true;
108 |         socket.emit('typing');
109 |     }
110 |     lastTypingTime = (new Date()).getTime();
111 | 
112 |     setTimeout(() => {
113 |     const typingTimer = (new Date()).getTime();
114 |     const timeDiff = typingTimer - lastTypingTime;
115 |     if (timeDiff >= TYPING_TIMER_LENGTH && typing) {
116 |         socket.emit('stop typing');
117 |         typing = false;
118 |     }
119 |     }, TYPING_TIMER_LENGTH);
120 | }
121 | 
122 | socket.on('typing', (data) => {
123 |     addChatTyping(data);
124 | });
125 | 
126 | // Whenever the server emits 'stop typing', kill the typing message
127 | socket.on('stop typing', (data) => {
128 |     removeChatTyping(data);
129 | });
130 | 
131 | // Adds the visual chat typing message
132 | const addChatTyping = (data) => {
133 |     data.typing = true;
134 |     data.message = ' is typing..';
135 |     addTypingMessage(data);
136 | }
137 | 
138 | // Removes the visual chat typing message
139 | const removeChatTyping = (data) => {
140 |     const typingElement = document.getElementsByClassName('typing')
141 | 
142 |     while (typingElement.length > 0) typingElement[0].remove();
143 | }
144 | 
145 |  // Adds the visual chat message to the message list
146 |  const addTypingMessage = (data, options) => {
147 |     const typingClass = data.typing ? 'typing' : '';
148 |     const div = document.createElement('div');
149 |     div.classList.add(typingClass);
150 | 
151 |     const p = document.createElement('p');
152 |     p.innerText = data.username + data.message;
153 | 
154 |     div.appendChild(p);
155 | 
156 |     document.querySelector('.is-typing').appendChild(div);
157 | }
158 | 
159 | // Message from server
160 | socket.on('message', message => {
161 |     console.log(message);
162 |     outputMessage(message);
163 | 
164 |     // Scroll bottom
165 |     chatMessages.scrollTop = chatMessages.scrollHeight;
166 | });
167 | 
168 | // Message submit
169 | chatForm.addEventListener('submit', (e) => {
170 |     e.preventDefault();
171 | 
172 |     // Get message text
173 |     const msg = e.target.elements.msg.value;
174 | 
175 |     // Emit message to server
176 |     socket.emit('chatMessage', msg);
177 |     socket.emit('stop typing');
178 |     typing = false;
179 | 
180 |     // Clear input
181 |     e.target.elements.msg.value = '';
182 |     e.target.elements.msg.focus();
183 | });
184 | 
185 | // Output message to DOM
186 | function outputMessage(message) {
187 |     const div = document.createElement('div');
188 |     div.classList.add('message');
189 | 
190 |     const p = document.createElement('p');
191 |     p.classList.add('meta');
192 |     p.innerText = message.username + ' ';
193 | 
194 |     const spanTime = document.createElement('span');
195 |     spanTime.innerText = message.time;
196 |     p.appendChild(spanTime);
197 | 
198 |     div.appendChild(p);
199 | 
200 |     const para = document.createElement('p');
201 |     para.classList.add('text');
202 |     para.innerText = message.text;
203 | 
204 |     div.appendChild(para);
205 | 
206 |     document.querySelector('.chat-messages').appendChild(div);
207 | }
208 | 
209 | // Add room name to DOM
210 | function outputRoomName(room) {
211 |     roomName.innerText = room;
212 | }
213 | 
214 | // Add users list to DOM
215 | function outputUsers(users) {
216 |     // join the array to string. can also user foreach
217 |     userList.innerHTML = `
218 |         ${users.map(user => `<li>${user.username}</li>`).join('')}
219 |     `;
220 | }


--------------------------------------------------------------------------------
/server.js:
--------------------------------------------------------------------------------
  1 | const path = require('path');
  2 | const express = require('express');
  3 | const app = express();
  4 | const server = require('http').createServer(app);
  5 | const io =  require('socket.io')(server);
  6 | const formatMessage = require('./utils/messages');
  7 | const { userJoin, getCurrentUser, userLeave, getRoomUsers } = require('./utils/users');
  8 | 
  9 | const PORT = process.env.PORT || 3000;
 10 | server.listen(PORT, () => console.log(`Server listening on port ${PORT}`));
 11 | 
 12 | // Routing
 13 | app.use(express.static(path.join(__dirname, 'public')));
 14 | 
 15 | const botName = 'ZoomCord Bot';
 16 | const ACCEPTED_ROOMS = ["Malaysia", "Indonesia", "Singapore"];
 17 | 
 18 | // Run when client connets
 19 | io.on('connection', socket => {
 20 |     socket.on('joinRoom', ({ userPeerId, username, room }) => {
 21 |         if (!ACCEPTED_ROOMS.includes(room)) {
 22 |             socket.emit('roomNotValid');
 23 |         }
 24 | 
 25 |         const user = userJoin(userPeerId, username, room);
 26 | 
 27 |         if (!user) {
 28 |             socket.emit('sameName');
 29 |         } else {
 30 | 
 31 |             socket.join(user.room);
 32 |         
 33 |             // only show in client to the user connecting
 34 |             socket.emit('message', formatMessage(botName, 'Welcome to ZoomCord!'));
 35 | 
 36 |             // Broadcast to all except the user itself in a specif room
 37 |             socket.broadcast
 38 |                 .to(user.room)
 39 |                 .emit(
 40 |                     'message',
 41 |                     formatMessage(botName, `${user.username} has joined the chat`)
 42 |                 );
 43 | 
 44 |             socket.broadcast.to(user.room).emit('user-connected', userPeerId)
 45 | 
 46 |             // Send users and room info
 47 |             io.to(user.room).emit('roomUsers', {
 48 |                 room: user.room,
 49 |                 users: getRoomUsers(user.room) // E.g return: [{id: '6JhtU8cQGMZzzzj5AAAB', username: 'kaiimran', room: 'Malaysia'}]
 50 |             });
 51 | 
 52 |             socket.on('typing', () => {
 53 |                 console.log('typing');
 54 | 
 55 |                 socket.broadcast
 56 |                     .to(user.room)
 57 |                     .emit('typing', {
 58 |                         username: user.username
 59 |                     });
 60 |             });
 61 | 
 62 |             socket.on('stop typing', () => {
 63 |                 console.log('stop typing');
 64 | 
 65 |                 socket.broadcast
 66 |                     .to(user.room)
 67 |                     .emit('stop typing', {
 68 |                         username: user.username
 69 |                     });
 70 |             });
 71 | 
 72 |             // Listen for chatMessage
 73 |             socket.on('chatMessage', msg => {
 74 |                 const user = getCurrentUser(userPeerId);
 75 | 
 76 |                 // Broadcast to all clients in the room
 77 |                 io
 78 |                     .to(user.room)
 79 |                     .emit('message', formatMessage(user.username, msg));
 80 |             });
 81 | 
 82 |             // Runs when client disconnects
 83 |             socket.on('disconnect', () => {
 84 |                 const user = userLeave(userPeerId);
 85 | 
 86 |                 if (user) {
 87 |                     io
 88 |                     .to(user.room)
 89 |                     .emit('message', formatMessage(botName, `${user.username} has left the chat`));
 90 |                 }
 91 | 
 92 |                 // Send users and room info
 93 |                 io.to(user.room).emit('roomUsers', {
 94 |                     room: user.room,
 95 |                     users: getRoomUsers(user.room)
 96 |                 });
 97 | 
 98 |                 socket.broadcast.to(user.room).emit('user-disconnected', userPeerId)
 99 |             });
100 |         }
101 |     });
102 | 
103 | });


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/utils/messages.js:
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 1 | const moment = require('moment');
 2 | 
 3 | function formatMessage(username, text) {
 4 |     return {
 5 |         username,
 6 |         text,
 7 |         time: moment().format('h:mm a')
 8 |     }
 9 | }
10 | 
11 | module.exports = formatMessage;


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/utils/users.js:
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 1 | const users = [];
 2 | 
 3 | // Join user to chat
 4 | function userJoin(id, username, room) {
 5 |     const exist = users.find(user => user.username === username);
 6 | 
 7 |     if (exist) {
 8 |         return false;
 9 |     }
10 | 
11 |     const user = { id, username, room };
12 | 
13 |     users.push(user);
14 | 
15 |     return user;
16 | }
17 | 
18 | // Get current user
19 | function getCurrentUser(id) {
20 |     return users.find(user => user.id === id);
21 | }
22 | 
23 | // User leaves chat
24 | function userLeave(id) {
25 |     const index = users.findIndex(user => user.id === id);
26 | 
27 |     // If not found will return -1
28 |     if (index !== -1) {
29 |         const leftUser = users[index];
30 |         users.splice(index, 1);
31 |         return leftUser;
32 |     }
33 | }
34 | 
35 | // Get room users
36 | function getRoomUsers(room) {
37 |     return users.filter(user => user.room === room);
38 | }
39 | 
40 | module.exports = {
41 |     userJoin,
42 |     getCurrentUser,
43 |     userLeave,
44 |     getRoomUsers
45 | };


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