├── .editorconfig ├── .env.example ├── .gitignore ├── README.md ├── package-lock.json ├── package.json ├── public ├── chat.html ├── css │ ├── .DS_Store │ ├── styles.css │ └── styles.min.css ├── img │ └── favicon.png ├── index.html └── js │ └── chat.js └── src ├── index.js └── utils ├── messages.js └── users.js /.editorconfig: -------------------------------------------------------------------------------- 1 | root = true 2 | 3 | [*] 4 | charset = utf-8 5 | indent_style = space 6 | indent_size = 2 7 | end_of_line = lf 8 | insert_final_newline = true 9 | trim_trailing_whitespace = true -------------------------------------------------------------------------------- /.env.example: -------------------------------------------------------------------------------- 1 | PORT=3000 2 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Logs 2 | logs 3 | *.log 4 | npm-debug.log* 5 | yarn-debug.log* 6 | yarn-error.log* 7 | 8 | # Runtime data 9 | pids 10 | *.pid 11 | *.seed 12 | *.pid.lock 13 | 14 | # Directory for instrumented libs generated by jscoverage/JSCover 15 | lib-cov 16 | 17 | # Coverage directory used by tools like istanbul 18 | coverage 19 | 20 | # nyc test coverage 21 | .nyc_output 22 | 23 | # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) 24 | .grunt 25 | 26 | # Bower dependency directory (https://bower.io/) 27 | bower_components 28 | 29 | # node-waf configuration 30 | .lock-wscript 31 | 32 | # Compiled binary addons (https://nodejs.org/api/addons.html) 33 | build/Release 34 | 35 | # Dependency directories 36 | node_modules/ 37 | jspm_packages/ 38 | 39 | # TypeScript v1 declaration files 40 | typings/ 41 | 42 | # Optional npm cache directory 43 | .npm 44 | 45 | # Optional eslint cache 46 | .eslintcache 47 | 48 | # Optional REPL history 49 | .node_repl_history 50 | 51 | # Output of 'npm pack' 52 | *.tgz 53 | 54 | # Yarn Integrity file 55 | .yarn-integrity 56 | 57 | # dotenv environment variables file 58 | .env 59 | 60 | # next.js build output 61 | .next 62 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Node.js Chat App 2 | 3 | A simple demo chat app built on [Node.js](https://nodejs.org/), [Express.js](https://expressjs.com/) and [Socket.io](https://socket.io/). 4 | 5 | ## Demo 6 | 7 | https://owan-nodejs-chat-app.herokuapp.com 8 | 9 | ## Pre-requisites 10 | 11 | To setup and run the project for local development / testing, you will need to use Node.js and NPM. I don't explicitly specify a minimum Node.js/NPM version for the app but I recommend going with whatever the latest LTS version is at the point in time you are setting things up. The minimum vesion of Node.js that I have tested this app on is **10.16.3**. 12 | 13 | Installers can be found here: [https://nodejs.org/en/download](https://nodejs.org/en/download/) 14 | 15 | Another option for installing Node is the **Node Version Manager** (**nvm**), which is a POSIX-compliant bash script to manage multiple active Node.js versions. Instructions for installing and using nvm to install Node and NPM can be found at [https://github.com/nvm-sh/nvm](https://github.com/nvm-sh/nvm). 16 | 17 | ## Installation 18 | 19 | The code for the chat app can be found at the public [GitHub](https://github.com/) repo [https://github.com/owanhunte/nodejs-chat-app](https://github.com/owanhunte/nodejs-chat-app). Either clone the repo to a local folder on your machine or download and extract the archive if you don't have [Git](https://git-scm.com/) installed. 20 | 21 | Open a terminal window session, or the equivalent on your machine, and enter the following command to install all the Node modules needed to run the app: 22 | 23 | ```sh 24 | npm install 25 | ``` 26 | 27 | ## Run the app in development mode 28 | 29 | After doing an `npm install` enter the following `npm run` command: 30 | 31 | ```sh 32 | npm run dev 33 | ``` 34 | 35 | This will start the app and set it up to listen for incoming connections on port 3000. Open up your browser of choice and go to the url [http://localhost:3000/](http://localhost:3000/) to start using the app itself. The `npm run dev` command automatically runs the app using the `nodemon` script so any changes you make to the app's javascript, CSS or HTML code will automatically restart it. 36 | 37 | ## Customizing the listening port 38 | 39 | To configure the port that the app listens on at startup, copy the file `.env.example`, located at the root of the project, to `.env` and set an appropriate value for the `PORT` environment variable listed in the file. This must be done before the app is started. 40 | -------------------------------------------------------------------------------- /package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "chat-app", 3 | "version": "1.0.0", 4 | "lockfileVersion": 1, 5 | "requires": true, 6 | "dependencies": { 7 | "@sindresorhus/is": { 8 | "version": "0.14.0", 9 | "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz", 10 | "integrity": "sha512-9NET910DNaIPngYnLLPeg+Ogzqsi9uM4mSboU5y6p8S5DzMTVEsJZrawi+BoDNUVBa2DhJqQYUFvMDfgU062LQ==", 11 | "dev": true 12 | }, 13 | "@szmarczak/http-timer": { 14 | "version": "1.1.2", 15 | "resolved": "https://registry.npmjs.org/@szmarczak/http-timer/-/http-timer-1.1.2.tgz", 16 | "integrity": "sha512-XIB2XbzHTN6ieIjfIMV9hlVcfPU26s2vafYWQcZHWXHOxiaRZYEDKEwdl129Zyg50+foYV2jCgtrqSA6qNuNSA==", 17 | "dev": true, 18 | "requires": { 19 | "defer-to-connect": "^1.0.1" 20 | } 21 | }, 22 | 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1712 | "integrity": "sha512-PSNhEJDejZYV7h50BohL09Er9VaIefr2LMAf3OEmpCkjOi34eYyQYAXUTjEQtZJTKcF0E2UKTh+osDLsgNim9Q==", 1713 | "dev": true 1714 | }, 1715 | "xmlhttprequest-ssl": { 1716 | "version": "1.5.5", 1717 | "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz", 1718 | "integrity": "sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4=" 1719 | }, 1720 | "yeast": { 1721 | "version": "0.1.2", 1722 | "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz", 1723 | "integrity": "sha1-AI4G2AlDIMNy28L47XagymyKxBk=" 1724 | } 1725 | } 1726 | } 1727 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "chat-app", 3 | "version": "1.0.0", 4 | "description": "", 5 | "main": "index.js", 6 | "scripts": { 7 | "start": "node src/index.js", 8 | "dev": "./node_modules/nodemon/bin/nodemon.js --ext js,css,html src/index.js", 9 | "test": "echo \"Error: no test specified\" && exit 1" 10 | }, 11 | "keywords": [], 12 | "author": "Owan Hunte", 13 | "license": "ISC", 14 | "dependencies": { 15 | "bad-words": "^3.0.3", 16 | "dotenv": "^8.2.0", 17 | "express": "^4.17.1", 18 | "socket.io": "^2.3.0" 19 | }, 20 | "devDependencies": { 21 | "nodemon": "^2.0.4" 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /public/chat.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Chat App 5 | 6 | 7 | 8 | 9 |
10 |
11 |
12 |
13 | 14 |
15 |
16 | 17 | 18 |
19 | 20 |
21 |
22 |
23 | 24 | 33 | 34 | 43 | 44 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | -------------------------------------------------------------------------------- /public/css/.DS_Store: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/adevbuildingstuff/nodejs-chat-app/ee2e7d2848cc8923cd58258d4061fe6ff363a006/public/css/.DS_Store -------------------------------------------------------------------------------- /public/css/styles.css: -------------------------------------------------------------------------------- 1 | /* General Styles */ 2 | 3 | * { 4 | margin: 0; 5 | padding: 0; 6 | box-sizing: border-box; 7 | } 8 | 9 | html { 10 | font-size: 16px; 11 | } 12 | 13 | input { 14 | font-size: 14px; 15 | } 16 | 17 | body { 18 | line-height: 1.4; 19 | color: #333333; 20 | font-family: Helvetica, Arial, sans-serif; 21 | } 22 | 23 | h1 { 24 | margin-bottom: 16px; 25 | } 26 | 27 | label { 28 | display: block; 29 | font-size: 14px; 30 | margin-bottom: 8px; 31 | color: #777; 32 | } 33 | 34 | input { 35 | border: 1px solid #eeeeee; 36 | padding: 12px; 37 | outline: none; 38 | } 39 | 40 | button { 41 | cursor: pointer; 42 | padding: 12px; 43 | background: #7c5cbf; 44 | border: none; 45 | color: white; 46 | font-size: 16px; 47 | transition: background 0.3s ease; 48 | } 49 | 50 | button:hover { 51 | background: #6b47b8; 52 | } 53 | 54 | button:disabled { 55 | cursor: default; 56 | background: #7c5cbf94; 57 | } 58 | 59 | /* Join Page Styles */ 60 | 61 | .centered-form { 62 | background: #333744; 63 | width: 100vw; 64 | height: 100vh; 65 | display: flex; 66 | justify-content: center; 67 | align-items: center; 68 | } 69 | 70 | .centered-form__box { 71 | box-shadow: 0px 0px 17px 1px #1d1f26; 72 | background: #f7f7fa; 73 | padding: 24px; 74 | width: 250px; 75 | } 76 | 77 | .centered-form button { 78 | width: 100%; 79 | } 80 | 81 | .centered-form input { 82 | margin-bottom: 16px; 83 | width: 100%; 84 | } 85 | 86 | /* Chat Page Layout */ 87 | 88 | .chat { 89 | display: flex; 90 | } 91 | 92 | .chat__sidebar { 93 | height: 100vh; 94 | color: white; 95 | background: #333744; 96 | width: 225px; 97 | overflow-y: scroll; 98 | } 99 | 100 | /* Chat styles */ 101 | 102 | .chat__main { 103 | flex-grow: 1; 104 | display: flex; 105 | flex-direction: column; 106 | max-height: 100vh; 107 | } 108 | 109 | .chat__messages { 110 | flex-grow: 1; 111 | padding: 24px 24px 0 24px; 112 | overflow-y: scroll; 113 | } 114 | 115 | /* Message Styles */ 116 | 117 | .message { 118 | margin-bottom: 16px; 119 | } 120 | 121 | .message__name { 122 | font-weight: 600; 123 | font-size: 14px; 124 | margin-right: 8px; 125 | } 126 | 127 | .message__meta { 128 | color: #777; 129 | font-size: 14px; 130 | } 131 | 132 | .message a { 133 | color: #0070cc; 134 | } 135 | 136 | /* Message Composition Styles */ 137 | 138 | .compose { 139 | display: flex; 140 | flex-shrink: 0; 141 | margin-top: 16px; 142 | padding: 24px; 143 | } 144 | 145 | .compose form { 146 | display: flex; 147 | flex-grow: 1; 148 | margin-right: 16px; 149 | } 150 | 151 | .compose input { 152 | border: 1px solid #eeeeee; 153 | width: 100%; 154 | padding: 12px; 155 | margin: 0 16px 0 0; 156 | flex-grow: 1; 157 | } 158 | 159 | .compose button { 160 | font-size: 14px; 161 | } 162 | 163 | /* Chat Sidebar Styles */ 164 | 165 | .room-title { 166 | font-weight: 400; 167 | font-size: 22px; 168 | background: #2c2f3a; 169 | padding: 24px; 170 | } 171 | 172 | .list-title { 173 | font-weight: 500; 174 | font-size: 18px; 175 | margin-bottom: 4px; 176 | padding: 12px 24px 0 24px; 177 | } 178 | 179 | .users { 180 | list-style-type: none; 181 | font-weight: 300; 182 | padding: 12px 24px 0 24px; 183 | } 184 | -------------------------------------------------------------------------------- /public/css/styles.min.css: -------------------------------------------------------------------------------- 1 | *{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}input{font-size:14px}body{line-height:1.4;color:#333;font-family:Helvetica,Arial,sans-serif}h1{margin-bottom:16px}label{display:block;font-size:14px;margin-bottom:8px;color:#777}input{border:1px solid #eee;padding:12px;outline:none}button{cursor:pointer;padding:12px;background:#7C5CBF;border:none;color:#fff;font-size:16px;transition:background .3s ease}button:hover{background:#6b47b8}button:disabled{cursor:default;background:#7c5cbf94}.centered-form{background:#333744;width:100vw;height:100vh;display:flex;justify-content:center;align-items:center}.centered-form__box{box-shadow:0 0 17px 1px #1D1F26;background:#F7F7FA;padding:24px;width:250px}.centered-form button{width:100%}.centered-form input{margin-bottom:16px;width:100%}.chat{display:flex}.chat__sidebar{height:100vh;color:#fff;background:#333744;width:225px;overflow-y:scroll}.chat__main{flex-grow:1;display:flex;flex-direction:column;max-height:100vh}.chat__messages{flex-grow:1;padding:24px 24px 0;overflow-y:scroll}.message{margin-bottom:16px}.message__name{font-weight:600;font-size:14px;margin-right:8px}.message__meta{color:#777;font-size:14px}.message a{color:#0070CC}.compose{display:flex;flex-shrink:0;margin-top:16px;padding:24px}.compose form{display:flex;flex-grow:1;margin-right:16px}.compose input{border:1px solid #eee;width:100%;padding:12px;margin:0 16px 0 0;flex-grow:1}.compose button{font-size:14px}.room-title{font-weight:400;font-size:22px;background:#2c2f3a;padding:24px}.list-title{font-weight:500;font-size:18px;margin-bottom:4px;padding:12px 24px 0}.users{list-style-type:none;font-weight:300;padding:12px 24px 0} -------------------------------------------------------------------------------- /public/img/favicon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/adevbuildingstuff/nodejs-chat-app/ee2e7d2848cc8923cd58258d4061fe6ff363a006/public/img/favicon.png -------------------------------------------------------------------------------- /public/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Chat App 5 | 6 | 7 | 8 | 9 |
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Join

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21 | 22 | -------------------------------------------------------------------------------- /public/js/chat.js: -------------------------------------------------------------------------------- 1 | const socket = io(); 2 | 3 | // Elements 4 | const $messageForm = document.querySelector("#message-form"); 5 | const $messageFormInput = $messageForm.querySelector("input"); 6 | const $messageFormButton = $messageForm.querySelector("button"); 7 | const $sendLocationBtn = document.querySelector("#send-location"); 8 | const $messages = document.querySelector("#messages"); 9 | 10 | // Templates 11 | const messageTemplate = document.querySelector("#message-template").innerHTML; 12 | const locationMessageTemplate = document.querySelector("#location-message-template").innerHTML; 13 | const sidebarTemplate = document.querySelector("#sidebar-template").innerHTML; 14 | 15 | // Options 16 | const { username, room } = Qs.parse(location.search, { ignoreQueryPrefix: true }); 17 | 18 | const autoscroll = () => { 19 | // New message element 20 | const $newMessage = $messages.lastElementChild; 21 | 22 | // Height of the new message 23 | const newMessageStyles = getComputedStyle($newMessage); 24 | const newMessageMargin = parseInt(newMessageStyles.marginBottom); 25 | const newMessageHeight = $newMessage.offsetHeight + newMessageMargin; 26 | 27 | // Visible height 28 | const visibleHeight = $messages.offsetHeight; 29 | 30 | // Height of messages container 31 | const containerHeight = $messages.scrollHeight; 32 | 33 | // How far have I scrolled? 34 | const scrollOffset = $messages.scrollTop + visibleHeight; 35 | 36 | if (containerHeight - newMessageHeight <= scrollOffset) { 37 | $messages.scrollTop = $messages.scrollHeight; 38 | } 39 | }; 40 | 41 | socket.on("message", message => { 42 | const html = Mustache.render(messageTemplate, { 43 | username: message.username, 44 | message: message.text, 45 | createdAt: moment(message.createdAt).format("h:mm a") 46 | }); 47 | 48 | $messages.insertAdjacentHTML("beforeend", html); 49 | autoscroll(); 50 | }); 51 | 52 | socket.on("locationMessage", message => { 53 | console.log(message); 54 | const html = Mustache.render(locationMessageTemplate, { 55 | username: message.username, 56 | url: message.url, 57 | createdAt: moment(message.createdAt).format("h:mm a") 58 | }); 59 | 60 | $messages.insertAdjacentHTML("beforeend", html); 61 | }); 62 | 63 | socket.on("roomData", ({ room, users }) => { 64 | const html = Mustache.render(sidebarTemplate, { 65 | room, 66 | users 67 | }); 68 | 69 | document.querySelector("#sidebar").innerHTML = html; 70 | }); 71 | 72 | $messageForm.addEventListener("submit", e => { 73 | e.preventDefault(); 74 | 75 | $messageFormButton.setAttribute("disabled", "disabled"); 76 | 77 | const message = e.target.elements.message.value; 78 | 79 | socket.emit("sendMessage", message, error => { 80 | $messageFormButton.removeAttribute("disabled"); 81 | $messageFormInput.value = ""; 82 | $messageFormInput.focus(); 83 | 84 | if (error) { 85 | return console.log(error); 86 | } else { 87 | console.log("Message delivered!"); 88 | } 89 | }); 90 | }); 91 | 92 | $sendLocationBtn.addEventListener("click", () => { 93 | if (!navigator.geolocation) { 94 | return alert("Geolocation is not supported by your browser."); 95 | } else { 96 | $sendLocationBtn.setAttribute("disabled", "disabled"); 97 | 98 | navigator.geolocation.getCurrentPosition(position => { 99 | socket.emit( 100 | "sendLocation", 101 | { 102 | latitude: position.coords.latitude, 103 | longitude: position.coords.longitude 104 | }, 105 | error => { 106 | $sendLocationBtn.removeAttribute("disabled"); 107 | if (!error) { 108 | console.log("Location shared!"); 109 | } 110 | } 111 | ); 112 | }); 113 | } 114 | }); 115 | 116 | socket.emit("join", { username, room }, error => { 117 | if (error) { 118 | alert(error); 119 | location.href = "/"; 120 | } 121 | }); 122 | -------------------------------------------------------------------------------- /src/index.js: -------------------------------------------------------------------------------- 1 | const path = require("path"); 2 | const http = require("http"); 3 | const express = require("express"); 4 | const socketio = require("socket.io"); 5 | const Filter = require("bad-words"); 6 | const { generateMessage, generateLocationMessage } = require("./utils/messages"); 7 | const { addUser, removeUser, getUser, getUsersInRoom } = require("./utils/users"); 8 | 9 | const app = express(); 10 | const server = http.createServer(app); 11 | const io = socketio(server); 12 | 13 | require("dotenv").config(); 14 | 15 | const port = process.env.PORT || 3000; 16 | const publicDirectoryPath = path.join(__dirname, "../public"); 17 | 18 | app.use(express.static(publicDirectoryPath)); 19 | 20 | io.on("connection", socket => { 21 | console.log("New WebSocket connection"); 22 | 23 | socket.on("join", (options, callback) => { 24 | const { error, user } = addUser({ id: socket.id, ...options }); 25 | if (error) { 26 | return callback(error); 27 | } else { 28 | socket.join(user.room); 29 | 30 | socket.emit("message", generateMessage("Admin", "Welcome!")); 31 | socket.broadcast.to(user.room).emit("message", generateMessage("Admin", `${user.username} has joined!`)); 32 | io.to(user.room).emit("roomData", { 33 | room: user.room, 34 | users: getUsersInRoom(user.room) 35 | }); 36 | 37 | callback(); 38 | } 39 | }); 40 | 41 | socket.on("sendMessage", (message, callback) => { 42 | const user = getUser(socket.id); 43 | const filter = new Filter(); 44 | 45 | if (filter.isProfane(message)) { 46 | return callback("Profanity is not allowed!"); 47 | } else { 48 | io.to(user.room).emit("message", generateMessage(user.username, message)); 49 | callback(); 50 | } 51 | }); 52 | 53 | socket.on("sendLocation", (coords, callback) => { 54 | const user = getUser(socket.id); 55 | io.to(user.room).emit("locationMessage", generateLocationMessage(user.username, `https://www.google.com/maps?q=${coords.latitude},${coords.longitude}`)); 56 | callback(); 57 | }); 58 | 59 | socket.on("disconnect", () => { 60 | const user = removeUser(socket.id); 61 | 62 | if (user) { 63 | io.to(user.room).emit("message", generateMessage("Admin", `${user.username} has left!`)); 64 | io.to(user.room).emit("roomData", { 65 | room: user.room, 66 | users: getUsersInRoom(user.room) 67 | }); 68 | } 69 | }); 70 | }); 71 | 72 | server.listen(port, () => { 73 | console.log(`Server is up on port ${port}!`); 74 | }); 75 | -------------------------------------------------------------------------------- /src/utils/messages.js: -------------------------------------------------------------------------------- 1 | const generateMessage = (username, text) => { 2 | return { 3 | username, 4 | text, 5 | createdAt: new Date().getTime() 6 | }; 7 | }; 8 | 9 | const generateLocationMessage = (username, url) => { 10 | return { 11 | username, 12 | url, 13 | createdAt: new Date().getTime() 14 | }; 15 | }; 16 | 17 | module.exports = { 18 | generateMessage, 19 | generateLocationMessage 20 | }; 21 | -------------------------------------------------------------------------------- /src/utils/users.js: -------------------------------------------------------------------------------- 1 | const users = []; 2 | 3 | const addUser = ({ id, username, room }) => { 4 | // Clean the data 5 | username = username.trim().toLowerCase(); 6 | room = room.trim().toLowerCase(); 7 | 8 | // Validate the data 9 | if (!username || !room) { 10 | return { 11 | error: "Username and room are required!" 12 | }; 13 | } 14 | 15 | // Check for existing user 16 | const existingUser = users.find(user => { 17 | return user.room === room && user.username === username; 18 | }); 19 | 20 | // Validate username 21 | if (existingUser) { 22 | return { 23 | error: "Username is in use!" 24 | }; 25 | } 26 | 27 | // Store user 28 | const user = { id, username, room }; 29 | users.push(user); 30 | return { user }; 31 | }; 32 | 33 | const removeUser = id => { 34 | const index = users.findIndex(user => user.id === id); 35 | 36 | if (index !== -1) { 37 | return users.splice(index, 1)[0]; 38 | } 39 | }; 40 | 41 | const getUser = id => { 42 | return users.find(user => user.id === id); 43 | }; 44 | 45 | const getUsersInRoom = room => { 46 | room = room.trim().toLowerCase(); 47 | return users.filter(user => user.room === room); 48 | }; 49 | 50 | module.exports = { 51 | addUser, 52 | removeUser, 53 | getUser, 54 | getUsersInRoom 55 | }; 56 | --------------------------------------------------------------------------------