/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

(function() {
	'use strict';

	var serviceModule = angular.module('eagle.service');

	serviceModule.service('Application', function($q, $wrapState, Entity) {
		var Application = {};
		var reloadListenerList = [];

		Application.list = [];

		Application.find = function (type, site) {
			return $.grep(Application.list, function (app) {
				return app.descriptor.type === type && (site ? app.site.siteId === site : true);
			});
		};

		// Load applications
		Application.reload = function () {
			Application.list = Entity.query('apps');
			Application.list._then(function () {
				$.each(reloadListenerList, function (i, listener) {
					listener(Application);
				});
			});
			return Application;
		};

		Application.onReload = function (func) {
			reloadListenerList.push(func);
		};

		// Load providers
		Application.providers = {};
		Application.providerList = Entity.query('apps/providers');
		Application.providerList._promise.then(function () {
			$.each(Application.providerList, function (i, oriApp) {
				Application.providers[oriApp.type] = oriApp;
			});
		});

		Application.findProvider = function (type) {
			var provider = common.array.find(type, Application.providerList, ["type"]);
			if(provider) return provider;

			var app = common.array.find(type, Application.list, ["appId"]);
			if(!app || !app.descriptor) return null;

			return common.array.find(app.descriptor.type, Application.providerList, ["type"]);
		};

		Application.getPromise = function () {
			return Application.list._promise.then(function() {
				return Application;
			});
		};

		// Initialization
		Application.reload();

		return Application;
	});
}());