# Source: src/js/collections/bookkeeper/Quotas.js

    "use strict";

    define(["jquery", "underscore", "backbone", "models/bookkeeper/Quota"],
      function($, _, Backbone, Quota) {

      /**
       * @class Quotas
       * @classdesc Quotas are limits set for a particular DataONE Product, such as the number
       * of portals allowed, disk space allowed, etc. Quotas have a soft and hard limit
       * per unit to help with communicating limit warnings.
       * @classcategory Collections/Bookkeeper
       * @since 2.14.0
       */
      var Quotas = Backbone.Collection.extend(
        /** @lends Quotas.prototype */ {

        /**
        * The class/model that is contained in this collection.
        * @type {Backbone.Model}
        */
        model: Quota,

        /**
        * A list of query parameters that are supported by the Bookkeeper Quotas API. These
        * query parameters can be passed to {@link Quotas#fetch} in the `options` object, and they
        * will be used during the fetch.
        * @type {string[]}
        */
        queryParams: ["quotaType", "subscriber"],

        /**
        * Constructs a URL string for fetching this collection and returns it
        * @param {Object} [options]
        * @property {string} options.quotaType  The Usage quotaType to fetch
        * @property {string} options.subscriber  The user or group subject associated with these Quotas
        * @returns {string} The URL string
        */
        url: function(options){

          var url = "";

          //Use the attributes from the options object for the URL, if it is passed to this function
          if( typeof options == "object" ){

            _.each( this.queryParams, function(name){
              if( typeof options[name] !== "undefined"){
                if( url.length == 0 ){
                  url += "?";
                }
                else{
                  url += "&";
                }

                url += name + "=" + encodeURIComponent(options[name]);
              }
            });

          }

          //Prepend the Bookkeeper Usages URL to the url query parameters string
          url = MetacatUI.appModel.get("bookkeeperQuotasUrl") + url;

          return url;

        },

        /**
        * Fetches a list of Quotas from the DataONE Bookkeeper service, parses them, and
        * stores them on this collection.
        * @param {Object} [options]
        * @property {string} options.quotaType  The quotaType to fetch
        * @property {string} options.subscriber  The user or group subject associated with these Quotas
        */
        fetch: function(options){

          var fetchOptions = {
            url: this.url(options)
          }

          fetchOptions = Object.assign(fetchOptions, MetacatUI.appUserModel.createAjaxSettings());

          //Call Backbone.Collection.fetch to retrieve the info
          return Backbone.Collection.prototype.fetch.call(this, fetchOptions);

        },

        /**
        * Parses the fetch() of this collection. Bookkeeper returns JSON already, so there
        * isn't much parsing to do.
        * @returns {JSON} The collection data in JSON form
        */
        parse: function(response){

          return response.quotas;
        }

      });

      return Quotas;
    });