add findOrCreateRoom function

server/methods/findOrCreateRoom.coffee

@@ -0,0 +1,13 @@
+Meteor.methods
+	findOrCreateClientRoomThenJoin: (clientId, usernames) ->
+		m = clientId.match(/^(?:CLT){0,1}([0-9]+)/i);
+		roomName = m[0];
+		if not roomName?
+			throw new Meteor.Error 403, '[methods] findOrCreateClientRoom -> Mal-format'
+		
+		room = RocketChat.models.Rooms.findOneByName(roomName);
+		console.log '[methods] findOrCreateClientRoom -> '.green, 'userId:', Meteor.userId(), 'arguments:', arguments
+
+		if not room?
+			room = Meteor.call('createPrivateGroup', roomName, Meteor.userId(), usernames)
+		Meteor.call 'joinRoom', room._id

server/restapi/restapi.coffee

@@ -21,6 +21,14 @@ Api.addRoute 'rooms/:id/join', authRequired: true,
 			Meteor.call('joinRoom', @urlParams.id)
 		status: 'success'   # need to handle error
 
+# find or create a room
+Api.addRoute 'rooms/findorcreatethenjoin/:clientId', authRequired: true,
+    post: ->
+        Meteor.runAsUser this.userId, () =>
+            Meteor.call('findOrCreateClientRoomThenJoin', @urlParams.clientId)
+        status: 'success'   # need to handle error   
+                
+        
 # leave a room
 Api.addRoute 'rooms/:id/leave', authRequired: true,
 	post: ->