public/js/collections/groups.js

   1 'use strict';
   2
   3 var Backbone = require('backbone');
   4 var LiveCollection = require('gitter-realtime-client').LiveCollection;
   5 var realtime = require('../components/realtime');
   6 var SyncMixin = require('./sync-mixin');
   7 var context = require('gitter-web-client-context');
   8
   9 var GroupModel = Backbone.Model.extend({
  10   defaults: {
  11     name: '',
  12     uri: '',
  13     type: 'org',
  14     linkPath: null,
  15     defaultRoomName: 'community',
  16     unreadItems: false,
  17     mentions: false,
  18     activity: false,
  19     favourite: null
  20   },
  21   sync: SyncMixin.sync
  22 });
  23
  24 var GroupCollection = LiveCollection.extend({
  25   model: GroupModel,
  26   urlTemplate: '/v1/user/:userId/groups',
  27   contextModel: context.contextModel(),
  28   client: function() {
  29     return realtime.getClient();
  30   },
  31   sync: SyncMixin.sync,
  32
  33   initialize: function() {
  34     this.listenTo(this, 'change:favourite', this.reorderFavs);
  35   },
  36
  37   reorderFavs: function(model) {
  38     /**
  39      * We need to do some special reordering in the model of a favourite being positioned
  40      * This is to mirror the changes happening on the server
  41      * @see recent-room-service.js@addTroupeAsFavouriteInPosition
  42      */
  43
  44     /* This only applies when a fav has been set */
  45     if (!model.changed || !model.changed.favourite || this.reordering) {
  46       return;
  47     }
  48
  49     this.reordering = true;
  50
  51     var favourite = model.changed.favourite;
  52
  53     var forUpdate = this.map(function(room) {
  54       return { id: room.id, favourite: room.get('favourite') };
  55     }).filter(function(room) {
  56       return room.favourite >= favourite && room.id !== model.id;
  57     });
  58
  59     forUpdate.sort(function(a, b) {
  60       return a.favourite - b.favourite;
  61     });
  62
  63     var next = favourite;
  64     for (var i = 0; i < forUpdate.length; i++) {
  65       var item = forUpdate[i];
  66
  67       if (item.favourite > next) {
  68         forUpdate.splice(i, forUpdate.length);
  69         break;
  70       }
  71
  72       item.favourite++;
  73       next = item.favourite;
  74     }
  75
  76     var self = this;
  77     for (var j = forUpdate.length - 1; j >= 0; j--) {
  78       var r = forUpdate[j];
  79       var id = r.id;
  80       var value = r.favourite;
  81       var t = self.get(id);
  82       t.set('favourite', value, { silent: true });
  83     }
  84
  85     delete this.reordering;
  86   }
  87 });
  88
  89 module.exports = {
  90   Model: GroupModel,
  91   Collection: GroupCollection
  92 };