'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: BI Cloud (C) Copyright IBM Corp. 2014, 2017
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */
define(['../../lib/@waca/dashboard-common/dist/core/Collection', '../../lib/@waca/core-client/js/core-client/errors/BaseError'], function (Collection, BaseError) {

	/**
  * A collection which is created from the server. For example, if we had a server collection
  * called ThingsCollection and it specified a URL of /things then if we did:
  *
  * new ThingsCollection().fetch();
  *
  * Then that collection would make a call to:
  *
  * GET /things
  *
  * And materialize the collection from the results of that call.
  *
  * Overriders of this class should define a url property, e.g:
  *
  * ThingsCollection = ServerCollection.extend({
  *
  * 	url: '/things',
  *	init: function() {
  *		...
  *	},
  *
  *	...
  * });
  *
  */
	var ServerCollection = Collection.extend({

		init: function init(models, options) {
			ServerCollection.inherited('init', this, arguments);
			this._ajaxSvc = options.ajaxSvc;
		},

		/**
   * Get all the models in the collection from the server. Returns a promise which
   * is resolved when the collection has been reset with the result from the server.
   */
		fetch: function fetch() {
			var _this = this;

			return new Promise(function (resolve, reject) {
				_this._ajaxSvc.ajax({
					url: _this.url,
					type: 'GET',
					cache: false,
					headers: {
						Accept: 'application/json'
					}
				}).then(function (models) {
					_this.reset(models);
					resolve(models);
				}).catch(function (error) {
					reject(new BaseError(error));
				});
			});
		},

		/**
   * Fetch a model with the given ID and add it to the collection
   */
		fetchModel: function fetchModel(id) {
			var _this2 = this;

			return new Promise(function (resolve, reject) {
				_this2._ajaxSvc.ajax({
					url: _this2.url + '/' + id,
					type: 'GET',
					headers: { Accept: 'application/json' }
				}).then(function (model) {
					if (model) {
						_this2.add(model);
					}
					resolve(_this2.get(model));
				}).catch(function (error) {
					reject(new BaseError(error));
				});
			});
		},

		/**
   * Adds a new model to the collection by POSTing it to the collection.
   *
   */
		addModel: function addModel(model) {
			var _this3 = this;

			return new Promise(function (resolve, reject) {
				_this3._ajaxSvc.ajax({
					url: _this3.url,
					type: 'POST',
					contentType: 'application/json',
					processData: false,
					dataType: 'json',
					data: JSON.stringify(model),
					headers: { Accept: 'application/json' }
				}).then(function (serverModel) {
					if (serverModel) {
						_this3.add(serverModel);
					}
					resolve(_this3.get(serverModel));
				}).catch(function (error) {
					reject(new BaseError(error));
				});
			});
		}

	});

	return ServerCollection;
});
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