chat client: make host part of the config options

I think that this its a better idea to populate the host field on the server instead of guessing it on the client because guessing it on the client is quite fragile: it only works when the webmaster includes our script the way we tell them to. If that doesn't fit into their workflow (e.g. they want to concatinate all javascript files, they want to load it asynchronously) our functionality will break.

public/assets/chat/chat.coffee

@@ -8,6 +8,7 @@ do($ = window.jQuery, window) ->
       agentPhrase: ' is helping you'
       show: true
       target: $('body')
+      host: 'ws://localhost:6042'
 
     _messageCount: 0
     isOpen: false
@@ -19,9 +20,8 @@ do($ = window.jQuery, window) ->
     inputTimeout: null
     isTyping: false
     isOnline: true
-    initialQueueDelay: 10000,
+    initialQueueDelay: 10000
     debug: true
-    host: 'ws://localhost:6042'
     wsReconnectEnable: true
     strings:
       'Online': 'Online'
@@ -395,8 +395,8 @@ do($ = window.jQuery, window) ->
       @send('chat_session_init')
 
     wsConnect: =>
-      @log 'notice', "Connecting to #{@host}"
-      @ws = new window.WebSocket(@host)
+      @log 'notice', "Connecting to #{@options.host}"
+      @ws = new window.WebSocket(@options.host)
       @ws.onopen = @onWebSocketOpen
 
       @ws.onmessage = @onWebSocketMessage

public/assets/chat/chat.js

@@ -8,7 +8,8 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
       invitationPhrase: '<strong>Chat</strong> with us!',
       agentPhrase: ' is helping you',
       show: true,
-      target: $('body')
+      target: $('body'),
+      host: 'ws://localhost:6042'
     };
 
     ZammadChat.prototype._messageCount = 0;
@@ -35,7 +36,7 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
 
     ZammadChat.prototype.debug = true;
 
-    ZammadChat.prototype.host = 'ws://localhost:6042';
+    ZammadChat.prototype.wsReconnectEnable = true;
 
     ZammadChat.prototype.strings = {
       'Online': 'Online',
@@ -98,7 +99,9 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
       this.onConnectionReestablished = bind(this.onConnectionReestablished, this);
       this.reconnect = bind(this.reconnect, this);
       this.onWebSocketOpen = bind(this.onWebSocketOpen, this);
-      this.connect = bind(this.connect, this);
+      this.wsReconnect = bind(this.wsReconnect, this);
+      this.wsClose = bind(this.wsClose, this);
+      this.wsConnect = bind(this.wsConnect, this);
       this.onAgentTypingEnd = bind(this.onAgentTypingEnd, this);
       this.onAgentTypingStart = bind(this.onAgentTypingStart, this);
       this.onQueue = bind(this.onQueue, this);
@@ -140,7 +143,7 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
         this.log('notice', 'Chat: Browser not supported!');
         return;
       }
-      this.connect();
+      this.wsConnect();
     }
 
     ZammadChat.prototype.checkForEnter = function(event) {
@@ -194,17 +197,21 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
           case 'chat_status_customer':
             switch (pipe.data.state) {
               case 'online':
+                this.sessionId = void 0;
                 this.onReady();
                 this.log('debug', 'Zammad Chat: ready');
                 break;
               case 'offline':
                 this.log('debug', 'Zammad Chat: No agent online');
+                this.wsClose();
                 break;
               case 'chat_disabled':
                 this.log('debug', 'Zammad Chat: Chat is disabled');
+                this.wsClose();
                 break;
               case 'no_seats_available':
                 this.log('debug', 'Zammad Chat: Too many clients in queue. Clients in queue: ', pipe.data.queue);
+                this.wsClose();
                 break;
               case 'reconnect':
                 this.log('debug', 'old messages', pipe.data.session);
@@ -338,19 +345,24 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
         this.el.css('bottom', 0);
         this.onOpenAnimationEnd();
       }
-      return this.isOpen = true;
-    };
-
-    ZammadChat.prototype.onOpenAnimationEnd = function() {
+      this.isOpen = true;
       if (!this.sessionId) {
         return this.session_init();
       }
     };
 
+    ZammadChat.prototype.onOpenAnimationEnd = function() {};
+
     ZammadChat.prototype.close = function(event) {
       if (event) {
         event.stopPropagation();
       }
+      if (!this.sessionId) {
+        return;
+      }
+      if (this.onInitialQueueDelayId) {
+        clearTimeout(this.onInitialQueueDelayId);
+      }
       sessionStorage.removeItem('sessionId');
       sessionStorage.removeItem('unfinished_message');
       return this.closeWindow();
@@ -400,6 +412,7 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
 
     ZammadChat.prototype.onQueueScreen = function(data) {
       var show;
+      this.setSessionId(data.session_id);
       show = (function(_this) {
         return function() {
           return _this.onQueue(data);
@@ -418,7 +431,6 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
     ZammadChat.prototype.onQueue = function(data) {
       this.log('notice', 'onQueue', data.position);
       this.inQueue = true;
-      this.setSessionId(data.session_id);
       return this.el.find('.zammad-chat-body').html(this.view('waiting')({
         position: data.position
       }));
@@ -485,15 +497,17 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
       return this.send('chat_session_init');
     };
 
-    ZammadChat.prototype.connect = function() {
-      this.log('notice', "Connecting to " + this.host);
-      this.ws = new window.WebSocket(this.host);
+    ZammadChat.prototype.wsConnect = function() {
+      this.log('notice', "Connecting to " + this.options.host);
+      this.ws = new window.WebSocket(this.options.host);
       this.ws.onopen = this.onWebSocketOpen;
       this.ws.onmessage = this.onWebSocketMessage;
       this.ws.onclose = (function(_this) {
         return function(e) {
           _this.log('debug', 'close websocket connection');
-          _this.reconnect();
+          if (_this.wsReconnectEnable) {
+            _this.reconnect();
+          }
           return _this.setAgentOnlineState(false);
         };
       })(this);
@@ -504,6 +518,18 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
       })(this);
     };
 
+    ZammadChat.prototype.wsClose = function() {
+      this.wsReconnectEnable = false;
+      return this.ws.close();
+    };
+
+    ZammadChat.prototype.wsReconnect = function() {
+      if (this.reconnectDelayId) {
+        clearTimeout(this.reconnectDelayId);
+      }
+      return this.reconnectDelayId = setTimeout(this.wsConnect, 5000);
+    };
+
     ZammadChat.prototype.onWebSocketOpen = function() {
       this.sessionId = sessionStorage.getItem('sessionId');
       this.log('debug', 'ws connected');
@@ -519,10 +545,7 @@ var bind = function(fn, me){ return function(){ return fn.apply(me, arguments);
       this.lastAddedType = 'status';
       this.el.find('.zammad-chat-agent-status').attr('data-status', 'connecting').text(this.T('Reconnecting'));
       this.addStatus(this.T('Connection lost'));
-      if (this.reconnectDelayId) {
-        clearTimeout(this.reconnectDelayId);
-      }
-      return this.reconnectDelayId = setTimeout(this.connect, 5000);
+      return this.wsReconnect();
     };
 
     ZammadChat.prototype.onConnectionReestablished = function() {