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'use strict'; |
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var app = { |
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rooms: function(){ |
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var socket = io('/rooms', { transports: ['websocket'] }); |
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// When socket connects, get a list of chatrooms |
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socket.on('connect', function () { |
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// Update rooms list upon emitting updateRoomsList event |
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socket.on('updateRoomsList', function(room) { |
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// Display an error message upon a user error(i.e. creating a room with an existing title) |
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$('.room-create p.message').remove(); |
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if(room.error != null){ |
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$('.room-create').append(`<p class="message error">${room.error}</p>`); |
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}else{ |
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app.helpers.updateRoomsList(room); |
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} |
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}); |
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// Whenever the user hits the create button, emit createRoom event. |
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$('.room-create button').on('click', function(e) { |
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var inputEle = $("input[name='title']"); |
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var roomTitle = inputEle.val().trim(); |
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if(roomTitle !== '') { |
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socket.emit('createRoom', roomTitle); |
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inputEle.val(''); |
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} |
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}); |
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}); |
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}, |
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chat: function(roomId, username){ |
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var socket = io('/chatroom', { transports: ['websocket'] }); |
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// When socket connects, join the current chatroom |
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socket.on('connect', function () { |
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socket.emit('join', roomId); |
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// Update users list upon emitting updateUsersList event |
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socket.on('updateUsersList', function(users, clear) { |
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$('.container p.message').remove(); |
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if(users.error != null){ |
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$('.container').html(`<p class="message error">${users.error}</p>`); |
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}else{ |
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app.helpers.updateUsersList(users, clear); |
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} |
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}); |
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// Whenever the user hits the save button, emit newMessage event. |
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$(".chat-message button").on('click', function(e) { |
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var textareaEle = $("textarea[name='message']"); |
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var messageContent = textareaEle.val().trim(); |
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if(messageContent !== '') { |
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var message = { |
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content: messageContent, |
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username: username, |
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date: Date.now() |
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}; |
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socket.emit('newMessage', roomId, message); |
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textareaEle.val(''); |
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app.helpers.addMessage(message); |
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} |
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}); |
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// Whenever a user leaves the current room, remove the user from users list |
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socket.on('removeUser', function(userId) { |
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$('li#user-' + userId).remove(); |
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app.helpers.updateNumOfUsers(); |
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}); |
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// Append a new message |
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socket.on('addMessage', function(message) { |
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app.helpers.addMessage(message); |
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}); |
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}); |
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}, |
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helpers: { |
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encodeHTML: function (str){ |
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return $('<div />').text(str).html(); |
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}, |
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// Update rooms list |
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updateRoomsList: function(room){ |
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room.title = this.encodeHTML(room.title); |
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var html = `<a href="/chat/${room._id}"><li class="room-item">${room.title}</li></a>`; |
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if(html === ''){ return; } |
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if($(".room-list ul li").length > 0){ |
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$('.room-list ul').prepend(html); |
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}else{ |
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$('.room-list ul').html('').html(html); |
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} |
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this.updateNumOfRooms(); |
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}, |
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// Update users list |
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updateUsersList: function(users, clear){ |
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if(users.constructor !== Array){ |
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users = [users]; |
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} |
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var html = ''; |
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for(var user of users) { |
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user.username = this.encodeHTML(user.username); |
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html += `<li class="clearfix" id="user-${user._id}"> |
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<img src="${user.picture}" alt="${user.username}" /> |
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<div class="about"> |
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<div class="name">${user.username}</div> |
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<div class="status"><i class="fa fa-circle online"></i> online</div> |
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</div></li>`; |
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} |
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if(html === ''){ return; } |
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129
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if(clear != null && clear == true){ |
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$('.users-list ul').html('').html(html); |
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}else{ |
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$('.users-list ul').prepend(html); |
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} |
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this.updateNumOfUsers(); |
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}, |
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138
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// Adding a new message to chat history |
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addMessage: function(message){ |
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message.date = (new Date(message.date)).toLocaleString(); |
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message.username = this.encodeHTML(message.username); |
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message.content = this.encodeHTML(message.content); |
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var html = `<li> |
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<div class="message-data"> |
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<span class="message-data-name">${message.username}</span> |
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<span class="message-data-time">${message.date}</span> |
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</div> |
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<div class="message my-message" dir="auto">${message.content}</div> |
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</li>`; |
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$(html).hide().appendTo('.chat-history ul').slideDown(200); |
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153
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// Keep scroll bar down |
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$(".chat-history").animate({ scrollTop: $('.chat-history')[0].scrollHeight}, 1000); |
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}, |
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156
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157
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// Update number of rooms |
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// This method MUST be called after adding a new room |
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updateNumOfRooms: function(){ |
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var num = $('.room-list ul li').length; |
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$('.room-num-rooms').text(num + " Room(s)"); |
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}, |
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164
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// Update number of online users in the current room |
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// This method MUST be called after adding, or removing list element(s) |
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updateNumOfUsers: function(){ |
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var num = $('.users-list ul li').length; |
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$('.chat-num-users').text(num + " User(s)"); |
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} |
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} |
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}; |
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OmarElGabry /
chat.io
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This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.