/**
 * A collection of Grantable objects.
 */
cdb.admin.Grantables = Backbone.Collection.extend({

  model: cdb.admin.Grantable,

  url: function(method) {
    var version = cdb.config.urlVersion('organizationGrantables', method);
    return '/api/' + version + '/organization/' + this.organization.id + '/grantables';
  },

  initialize: function(users, opts) {
    if (!opts.organization) throw new Error('organization is required');
    this.organization = opts.organization;
    this.currentUserId = opts.currentUserId;
    this.sync = Backbone.syncAbort; // adds abort behaviour
  },

  parse: function(response) {
    this.total_entries = response.total_entries;

    return _.reduce(response.grantables, function(memo, m) {
      if (m.id === this.currentUserId) {
        this.total_entries--;
      } else {
        memo.push(m);
      }

      return memo;
    }, [], this);
  },

  // @return {Number, undefined} may be undefined until a first fetch is done
  totalCount: function() {
    return this.total_entries;
  }

});