Convert Livechat from Coffeescript to JavaScript

packages/rocketchat-lib/server/functions/sendMessage.js

@@ -10,7 +10,7 @@ RocketChat.sendMessage = function(user, message, room, upsert = false) {
 		message.msg = '';
 	}
 	message.rid = room._id;
-	if (room.usernames || room.usernames.length === 0) {
+	if (!room.usernames || room.usernames.length === 0) {
 		const updated_room = RocketChat.models.Rooms.findOneById(room._id);
 		if (updated_room != null) {
 			room = updated_room;

packages/rocketchat-livechat/app/.meteor/packages

@@ -22,7 +22,6 @@ underscore@1.0.10
 jquery@1.11.10
 random@1.0.10
 ejson@1.0.13
-coffeescript
 rocketchat:streamer
 kadira:flow-router
 kadira:blaze-layout

packages/rocketchat-livechat/app/client/lib/_visitor.js

@@ -0,0 +1,66 @@
+/* globals Commands */
+const msgStream = new Meteor.Streamer('room-messages');
+
+this.visitor = new class {
+	constructor() {
+		this.token = new ReactiveVar(null);
+		this.room = new ReactiveVar(null);
+		this.roomToSubscribe = new ReactiveVar(null);
+		this.roomSubscribed = null;
+	}
+
+	register() {
+		if (!localStorage.getItem('visitorToken')) {
+			localStorage.setItem('visitorToken', Random.id());
+		}
+
+		this.token.set(localStorage.getItem('visitorToken'));
+	}
+
+	getToken() {
+		return this.token.get();
+	}
+
+	setRoom(rid) {
+		this.room.set(rid);
+	}
+
+	getRoom(createOnEmpty = false) {
+		let roomId = this.room.get();
+		if (!roomId && createOnEmpty) {
+			roomId = Random.id();
+			this.room.set(roomId);
+		}
+
+		return roomId;
+	}
+
+	isSubscribed(roomId) {
+		return this.roomSubscribed === roomId;
+	}
+
+	subscribeToRoom(roomId) {
+		if (this.roomSubscribed && this.roomSubscribed === roomId) {
+			return;
+		}
+
+		this.roomSubscribed = roomId;
+
+		msgStream.on(roomId, (msg) => {
+			if (msg.t === 'command') {
+				Commands[msg.msg] && Commands[msg.msg]();
+			} else if (msg.t !== 'livechat_video_call') {
+				ChatMessage.upsert({ _id: msg._id }, msg);
+
+				if (msg.t === 'livechat-close') {
+					parentCall('callback', 'chat-ended');
+				}
+
+				// notification sound
+				if (Session.equals('sound', true) && msg.u._id !== Meteor.userId()) {
+					$('#chatAudioNotification')[0].play();
+				}
+			}
+		});
+	}
+};