class Xmpp.Models.Chat extends Xmpp.Models.Model
   namespace: 'app.chat'
 
   defaults:
     who: null
     withWhom: null

     chatId: null

     isMultiChat: false

 
   initialize: ->
     _.bindAll(this)
 

     if (@get('isMultiChat'))
       @set('withWhom', [])
 

     #App.Com.openNewMultiChatId(@get('who').get('jid'), @get('withWhom').get('jid'), this)

   appendWithWhom: (newPerson) ->
     allWithWhom = @get('withWhom');
 
     exists = _.find(allWithWhom, (withWhom) ->
       withWhom == newPerson
     )?
 
     if not exists
       allWithWhom.push(newPerson)
 

   setChatId: (id) ->

     App.debug ['multichat has id', id]

     @set('chatId', id)
 

 class Xmpp.Collections.ChatsCollection extends Backbone.Collection
   model: Xmpp.Models.Chat
 
   initialize: ->
     _.bindAll(this)
 

     Backbone.Events.on('closeChat', (tab, chat) =>
       @removeChat(chat)
     )

 
   find: (who, withWhom) ->

     _.find(@models, (chat) ->

       chat.get('who') == who && chat.get('withWhom') == withWhom
     )
 

   findById: (id) ->
     @findWhere(chatId: id)
 

   removeChat: (chat) ->

     @models = _.without(@openedChats, chat)