From ffeb85c350cb988c0f44829f18edc1651561c74e Mon Sep 17 00:00:00 2001 From: Mishal Shah Date: Tue, 10 Apr 2018 21:11:01 +0530 Subject: [PATCH] chat module added --- bin/www | 54 +++- package-lock.json | 279 +++++++++++++++++ package.json | 3 +- public/javascripts/socket_programming/chat.js | 283 ++++++++++++++++++ public/socket_programming/chat.html | 27 ++ .../stylesheets/socket_programming/chat.css | 135 +++++++++ 6 files changed, 779 insertions(+), 2 deletions(-) create mode 100644 public/javascripts/socket_programming/chat.js create mode 100644 public/socket_programming/chat.html create mode 100644 public/stylesheets/socket_programming/chat.css diff --git a/bin/www b/bin/www index a934a3d..de514ab 100755 --- a/bin/www +++ b/bin/www @@ -20,7 +20,59 @@ app.set('port', port); */ var server = http.createServer(app); - +var io = require('socket.io')(server); + +var numUsers = 0; + +io.on('connection', function (socket) { + var addedUser = false; + + socket.on('new message', function (data) { + socket.broadcast.emit('new message', { + username: socket.username, + message: data + }); + }); + + socket.on('add user', function (username) { + if (addedUser) return; + + socket.username = username; + ++numUsers; + addedUser = true; + socket.emit('login', { + numUsers: numUsers + }); + + socket.broadcast.emit('user joined', { + username: socket.username, + numUsers: numUsers + }); + }); + + socket.on('typing', function () { + socket.broadcast.emit('typing', { + username: socket.username + }); + }); + + socket.on('stop typing', function () { + socket.broadcast.emit('stop typing', { + username: socket.username + }); + }); + + socket.on('disconnect', function () { + if (addedUser) { + --numUsers; + + socket.broadcast.emit('user left', { + username: socket.username, + numUsers: numUsers + }); + } + }); +}); /** * Listen on provided port, on all network interfaces. */ diff --git a/package-lock.json b/package-lock.json index 488a222..7e20b43 100644 --- a/package-lock.json +++ b/package-lock.json @@ -26,6 +26,11 @@ "acorn": "2.7.0" } }, + "after": { + "version": "0.8.2", + "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz", + "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=" + }, "align-text": { "version": "0.1.4", "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz", @@ -46,11 +51,36 @@ "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz", "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=" }, + "arraybuffer.slice": { + "version": "0.0.7", + "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz", + "integrity": "sha512-wGUIVQXuehL5TCqQun8OW81jGzAWycqzFF8lFp+GOM5BXLYj3bKNsYC4daB7n6XjCqxQA/qgTJ+8ANR3acjrog==" + }, "asap": { "version": "1.0.0", "resolved": "https://registry.npmjs.org/asap/-/asap-1.0.0.tgz", "integrity": "sha1-sqRdpf36ILBJb8N2jMJ8EvqRan0=" }, + "async-limiter": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz", + "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==" + }, + "backo2": { + "version": "1.0.2", + "resolved": "https://registry.npmjs.org/backo2/-/backo2-1.0.2.tgz", + "integrity": "sha1-MasayLEpNjRj41s+u2n038+6eUc=" + }, + "base64-arraybuffer": { + "version": "0.1.5", + "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz", + "integrity": "sha1-c5JncZI7Whl0etZmqlzUv5xunOg=" + }, + "base64id": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/base64id/-/base64id-1.0.0.tgz", + "integrity": "sha1-R2iMuZu2gE8OBtPnY7HDLlfY5rY=" + }, "basic-auth": { "version": "2.0.0", "resolved": "https://registry.npmjs.org/basic-auth/-/basic-auth-2.0.0.tgz", @@ -59,6 +89,19 @@ "safe-buffer": "5.1.1" } }, + "better-assert": { + "version": "1.0.2", + "resolved": "https://registry.npmjs.org/better-assert/-/better-assert-1.0.2.tgz", + "integrity": "sha1-QIZrnhueC1W0gYlDEeaPr/rrxSI=", + "requires": { + "callsite": "1.0.0" + } + }, + "blob": { + "version": "0.0.4", + "resolved": "https://registry.npmjs.org/blob/-/blob-0.0.4.tgz", + "integrity": "sha1-vPEwUspURj8w+fx+lbmkdjCpSSE=" + }, "body-parser": { "version": "1.18.2", "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.2.tgz", @@ -81,6 +124,11 @@ "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz", "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg=" }, + "callsite": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/callsite/-/callsite-1.0.0.tgz", + "integrity": "sha1-KAOY5dZkvXQDi28JBRU+borxvCA=" + }, "camelcase": { "version": "1.2.1", "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz", @@ -141,6 +189,21 @@ "resolved": "https://registry.npmjs.org/commander/-/commander-2.6.0.tgz", "integrity": "sha1-nfflL7Kgyw+4kFjugMMQQiXzfh0=" }, + "component-bind": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/component-bind/-/component-bind-1.0.0.tgz", + "integrity": "sha1-AMYIq33Nk4l8AAllGx06jh5zu9E=" + }, + "component-emitter": { + "version": "1.2.1", + "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz", + "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=" + }, + "component-inherit": { + "version": "0.0.3", + "resolved": "https://registry.npmjs.org/component-inherit/-/component-inherit-0.0.3.tgz", + "integrity": "sha1-ZF/ErfWLcrZJ1crmUTVhnbJv8UM=" + }, "constantinople": { "version": "3.0.2", "resolved": "https://registry.npmjs.org/constantinople/-/constantinople-3.0.2.tgz", @@ -235,6 +298,69 @@ "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.1.tgz", "integrity": "sha1-eePVhlU0aQn+bw9Fpd5oEDspTSA=" }, + "engine.io": { + "version": "3.2.0", + "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-3.2.0.tgz", + "integrity": 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"window-size": "0.1.0" } + }, + "yeast": { + "version": "0.1.2", + "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz", + "integrity": "sha1-AI4G2AlDIMNy28L47XagymyKxBk=" } } } diff --git a/package.json b/package.json index 7424595..010f345 100644 --- a/package.json +++ b/package.json @@ -13,6 +13,7 @@ "express": "~4.15.5", "jade": "~1.11.0", "morgan": "~1.9.0", - "serve-favicon": "~2.4.5" + "serve-favicon": "~2.4.5", + "socket.io": "^2.1.0" } } diff --git a/public/javascripts/socket_programming/chat.js b/public/javascripts/socket_programming/chat.js new file mode 100644 index 0000000..d29b3b2 --- /dev/null +++ b/public/javascripts/socket_programming/chat.js @@ -0,0 +1,283 @@ +$(function() { + var FADE_TIME = 150; // ms + var TYPING_TIMER_LENGTH = 400; // ms + var COLORS = [ + '#e21400', '#91580f', '#f8a700', '#f78b00', + '#58dc00', '#287b00', '#a8f07a', '#4ae8c4', + '#3b88eb', '#3824aa', '#a700ff', '#d300e7' + ]; + + // Initialize variables + var $window = $(window); + var $usernameInput = $('.usernameInput'); // Input for username + var $messages = $('.messages'); // Messages area + var $inputMessage = $('.inputMessage'); // Input message input box + + var $loginPage = $('.login.page'); // The login page + var $chatPage = $('.chat.page'); // The chatroom page + + // Prompt for setting a username + var username; + var connected = false; + var typing = false; + var lastTypingTime; + var $currentInput = $usernameInput.focus(); + + var socket = io(); + + function addParticipantsMessage (data) { + var message = ''; + if (data.numUsers === 1) { + message += "1 participant"; + } else { + message += data.numUsers + " participants"; + } + log(message); + } + + // Sets the client's username + function setUsername () { + username = cleanInput($usernameInput.val().trim()); + + // If the username is valid + if (username) { + $loginPage.fadeOut(); + $chatPage.show(); + $loginPage.off('click'); + $currentInput = $inputMessage.focus(); + + // Tell the server your username + socket.emit('add user', username); + } + } + + // Sends a chat message + function sendMessage () { + var message = $inputMessage.val(); + // Prevent markup from being injected into the message + message = cleanInput(message); + // if there is a non-empty message and a socket connection + if (message && connected) { + $inputMessage.val(''); + addChatMessage({ + username: username, + message: message + }); + // tell server to execute 'new message' and send along one parameter + socket.emit('new message', message); + } + } + + // Log a message + function log (message, options) { + var $el = $('
  • ').addClass('log').text(message); + addMessageElement($el, options); + } + + // Adds the visual chat message to the message list + function addChatMessage (data, options) { + // Don't fade the message in if there is an 'X was typing' + var $typingMessages = getTypingMessages(data); + options = options || {}; + if ($typingMessages.length !== 0) { + options.fade = false; + $typingMessages.remove(); + } + + var $usernameDiv = $('') + .text(data.username) + .css('color', getUsernameColor(data.username)); + var $messageBodyDiv = $('') + .text(data.message); + + var typingClass = data.typing ? 'typing' : ''; + var $messageDiv = $('
  • ') + .data('username', data.username) + .addClass(typingClass) + .append($usernameDiv, $messageBodyDiv); + + addMessageElement($messageDiv, options); + } + + // Adds the visual chat typing message + function addChatTyping (data) { + data.typing = true; + data.message = 'is typing'; + addChatMessage(data); + } + + // Removes the visual chat typing message + function removeChatTyping (data) { + getTypingMessages(data).fadeOut(function () { + $(this).remove(); + }); + } + + // Adds a message element to the messages and scrolls to the bottom + // el - The element to add as a message + // options.fade - If the element should fade-in (default = true) + // options.prepend - If the element should prepend + // all other messages (default = false) + function addMessageElement (el, options) { + var $el = $(el); + + // Setup default options + if (!options) { + options = {}; + } + if (typeof options.fade === 'undefined') { + options.fade = true; + } + if (typeof options.prepend === 'undefined') { + options.prepend = false; + } + + // Apply options + if (options.fade) { + $el.hide().fadeIn(FADE_TIME); + } + if (options.prepend) { + $messages.prepend($el); + } else { + $messages.append($el); + } + $messages[0].scrollTop = $messages[0].scrollHeight; + } + + // Prevents input from having injected markup + function cleanInput (input) { + return $('
    ').text(input).html(); + } + + // Updates the typing event + function updateTyping () { + if (connected) { + if (!typing) { + typing = true; + socket.emit('typing'); + } + lastTypingTime = (new Date()).getTime(); + + setTimeout(function () { + var typingTimer = (new Date()).getTime(); + var timeDiff = typingTimer - lastTypingTime; + if (timeDiff >= TYPING_TIMER_LENGTH && typing) { + socket.emit('stop typing'); + typing = false; + } + }, TYPING_TIMER_LENGTH); + } + } + + // Gets the 'X is typing' messages of a user + function getTypingMessages (data) { + return $('.typing.message').filter(function (i) { + return $(this).data('username') === data.username; + }); + } + + // Gets the color of a username through our hash function + function getUsernameColor (username) { + // Compute hash code + var hash = 7; + for (var i = 0; i < username.length; i++) { + hash = username.charCodeAt(i) + (hash << 5) - hash; + } + // Calculate color + var index = Math.abs(hash % COLORS.length); + return COLORS[index]; + } + + // Keyboard events + + $window.keydown(function (event) { + // Auto-focus the current input when a key is typed + if (!(event.ctrlKey || event.metaKey || event.altKey)) { + $currentInput.focus(); + } + // When the client hits ENTER on their keyboard + if (event.which === 13) { + if (username) { + sendMessage(); + socket.emit('stop typing'); + typing = false; + } else { + setUsername(); + } + } + }); + + $inputMessage.on('input', function() { + updateTyping(); + }); + + // Click events + + // Focus input when clicking anywhere on login page + $loginPage.click(function () { + $currentInput.focus(); + }); + + // Focus input when clicking on the message input's border + $inputMessage.click(function () { + $inputMessage.focus(); + }); + + // Socket events + + // Whenever the server emits 'login', log the login message + socket.on('login', function (data) { + connected = true; + // Display the welcome message + var message = "Socket Programming Chat "; + log(message, { + prepend: true + }); + addParticipantsMessage(data); + }); + + // Whenever the server emits 'new message', update the chat body + socket.on('new message', function (data) { + addChatMessage(data); + }); + + // Whenever the server emits 'user joined', log it in the chat body + socket.on('user joined', function (data) { + log(data.username + ' joined'); + addParticipantsMessage(data); + }); + + // Whenever the server emits 'user left', log it in the chat body + socket.on('user left', function (data) { + log(data.username + ' left'); + addParticipantsMessage(data); + removeChatTyping(data); + }); + + // Whenever the server emits 'typing', show the typing message + socket.on('typing', function (data) { + addChatTyping(data); + }); + + // Whenever the server emits 'stop typing', kill the typing message + socket.on('stop typing', function (data) { + removeChatTyping(data); + }); + + socket.on('disconnect', function () { + log('you have been disconnected'); + }); + + socket.on('reconnect', function () { + log('you have been reconnected'); + if (username) { + socket.emit('add user', username); + } + }); + + socket.on('reconnect_error', function () { + log('attempt to reconnect has failed'); + }); + + }); + \ No newline at end of file diff --git a/public/socket_programming/chat.html b/public/socket_programming/chat.html new file mode 100644 index 0000000..1579b24 --- /dev/null +++ b/public/socket_programming/chat.html @@ -0,0 +1,27 @@ + + + + + Socket Programming Chat + + + + + + +
      +
    • +
      +
        +
        + +
        • + +
      + + \ No newline at end of file diff --git a/public/stylesheets/socket_programming/chat.css b/public/stylesheets/socket_programming/chat.css new file mode 100644 index 0000000..332029c --- /dev/null +++ b/public/stylesheets/socket_programming/chat.css @@ -0,0 +1,135 @@ +* { + box-sizing: border-box; + } + + html { + font-weight: 300; + -webkit-font-smoothing: antialiased; + } + + html, input { + font-family: + "HelveticaNeue-Light", + "Helvetica Neue Light", + "Helvetica Neue", + Helvetica, + Arial, + "Lucida Grande", + sans-serif; + } + + html, body { + height: 100%; + margin: 0; + padding: 0; + } + + ul { + list-style: none; + word-wrap: break-word; + } + + .pages { + height: 100%; + margin: 0; + padding: 0; + width: 100%; + } + + .page { + height: 100%; + position: absolute; + width: 100%; + } + + .login.page { + background-color: #000; + } + + .login.page .form { + height: 100px; + margin-top: -100px; + position: absolute; + + text-align: center; + top: 50%; + width: 100%; + } + + .login.page .form .usernameInput { + background-color: transparent; + border: none; + border-bottom: 2px solid #fff; + outline: none; + padding-bottom: 15px; + text-align: center; + width: 400px; + } + + .login.page .title { + font-size: 200%; + } + + .login.page .usernameInput { + font-size: 200%; + letter-spacing: 3px; + } + + .login.page .title, .login.page .usernameInput { + color: #fff; + font-weight: 100; + } + + .chat.page { + display: none; + } + + .messages { + font-size: 150%; + } + + .inputMessage { + font-size: 100%; + } + + .log { + color: gray; + font-size: 70%; + margin: 5px; + text-align: center; + } + + .chatArea { + height: 100%; + padding-bottom: 60px; + } + + .messages { + height: 100%; + margin: 0; + overflow-y: scroll; + padding: 10px 20px 10px 20px; + } + + .message.typing .messageBody { + color: gray; + } + + .username { + font-weight: 700; + overflow: hidden; + padding-right: 15px; + text-align: right; + } + + .inputMessage { + border: 10px solid #000; + bottom: 0; + height: 60px; + left: 0; + outline: none; + padding-left: 10px; + position: absolute; + right: 0; + width: 100%; + } \ No newline at end of file