/*
 *  Copyright 2015 Anyware Services
 *
 *  Licensed 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.
 */

/**
 * This factory creates Ametys.message.MessageTarget for a page.
 * 
 * See #createTargets to know more.
 * @private
 */
Ext.define("Ametys.plugins.web.page.PageMessageTargetFactory",
	{
		extend: "Ametys.message.factory.DefaultMessageTargetFactory",

		/**
		 * Create the targets for a message
		 * @param {Object} parameters The parameters needed by the factory to create the message. Can not be null. Handled elements are
		 * @param {String[]} parameters.ids The page's identifiers. Must be present if pages is empty
         * @param {Object} [parameters.errorMessage] The error message to display
		 * @param {Ametys.web.page.Page[]} parameters.pages The pages themselves. Must be present if ids is empty
		 * @param {Function} callback The callback function called when the targets are created. Parameters are
		 * @param {Ametys.message.MessageTarget[]} callback.targets The targets created. Cannot be null.
         * @param {String} targetId The id of target specified. Useful for gerneric MessageTargetFactories.
         * @param {String} cancelCode The cancel code to transmit to the ServerComm. Can be null. Usefull to avoid request that will be discarded such as SelectionChanged events.
		 */
		createTargets: function(parameters, callback, targetId, cancelCode)
		{
			if (parameters.ids)
			{
				Ametys.web.page.PageDAO.getPages (parameters.ids, 
                                                Ext.bind(this._createTargets, this, [callback, parameters], true), 
                                                null, // Workspace name
                                                parameters.errorMessage, 
                                                parameters['zone-name'], 
                                                parameters['zoneitem-id'], 
                                                cancelCode
                );
			}
			else if (parameters.pages)
			{
				this._createTargets (parameters.pages, callback, parameters);
			}
		},

		/**
		 * Create the page targets
		 * @param {Ametys.web.page.Page[]} pages The pages
		 * @param {Function} callback The callback function called when the targets are created. Parameters are
		 * @param {Ametys.message.MessageTarget[]} callback.targets The targets created. Cannot be null.
		 * @param {Object} parameters The initial parameters of the #createTargets method
		 * @private
		 */
		_createTargets: function (pages, callback, parameters)
		{
			delete parameters['ids'];
			delete parameters['pages'];
			
			var targets = [];
			
			for (var i=0; i < pages.length; i++)
			{
				var subtargets = [];
				
				var page = pages[i];
				
				if (page.getType() == 'CONTAINER')
				{
					subtargets = this._createZoneTargets(page, parameters['zone-name'], parameters['zoneitem-id'], parameters['content-id'], parameters['zone-width']);
				}
				
				targets.push(Ext.create("Ametys.message.MessageTarget", {
					id: Ametys.message.MessageTarget.PAGE,
					parameters: Ext.merge(pages[i].getProperties(parameters), {page: pages[i]}),
					subtargets: subtargets
				}));	
			}
				
			callback(targets);
		},
		
		/**
		 * @private
		 * Create the zone subtarget
		 * @param {Ametys.web.page.Page} page The parent page
		 * @param {String} zoneName The zone name of subtarget to restrict to. Can be null be to create a subtarget for all zones.
		 * @param {String} zoneItemId The id of zone item to restrict to. Can be null be to create a subtarget for all zone items.
		 * @param {String} contentId The content id to restrict to. Can be null be to create a subtarget for all contents.
		 * @param {Number} zoneWidth The width of parent zone.
		 */
		_createZoneTargets: function (page, zoneName, zoneItemId, contentId, zoneWidth)
		{
			var targets = [];
			var zones = page.getZones();
			for (var z=0; z < zones.length; z++)
			{
				function passesCondition (zone, zoneName, zoneItemId)
				{
					if (zoneItemId == null)
					{
						// Only look for zone to check condition
						return zoneName == null || zone.name == zoneName;
					}
					
					var zoneitems = zone.zoneitems;
					for (var i=0; i < zoneitems.length; i++)
					{
						if (zoneitems[i].id == zoneItemId)
						{
							return true;
						}
					}
					return false;
				}
				
				if (passesCondition(zones[z], zoneName, zoneItemId))
				{
					var subtargets = this._createZoneItemTargets(zones[z], zoneItemId, contentId, zoneWidth);
					targets.push(Ext.create("Ametys.message.MessageTarget", {
						id: Ametys.message.MessageTarget.ZONE,
						parameters: {
							name: zones[z].name,
							isModifiable: zones[z].isModifiable
						},
						subtargets: subtargets
					}));
				}
			}
			
			return targets;
		},
		
		/**
		 * @private
		 * Create the zone item subtarget
		 * @param {Object} zone The parent zone
		 * @param {String} zoneItemId The id of zone item to restrict to. Can be null be to create a subtarget for all zone items.
		 * @param {String} contentId The content id to restrict to. Can be null be to create a subtarget for all contents.
		 * @param {Number} zoneWidth The width of parent zone.
		 */
		_createZoneItemTargets: function (zone, zoneItemId, contentId, zoneWidth)
		{
			var targets = [];
			var zoneitems = zone.zoneitems;
			for (var z=0; z < zoneitems.length; z++)
			{
				if (zoneItemId == null || zoneitems[z].id == zoneItemId)
				{
					var subtargets = [];
					if (zoneitems[z].content)
					{
						if (contentId == null || zoneitems[z].content.id == contentId)
						{
							var content = Ext.create ('Ametys.cms.content.Content', Ext.apply(zoneitems[z].content, {'contentWidth': zoneWidth}));
							subtargets.push(Ametys.plugins.cms.content.ContentMessageTargetFactory.createTarget(Ametys.message.MessageTarget.CONTENT, content));
							
						}

						delete zoneitems[z].content;
					}
					
					targets.push(Ext.create("Ametys.message.MessageTarget", {
						id: Ametys.message.MessageTarget.ZONE_ITEM,
						parameters: zoneitems[z],
						subtargets: subtargets
					}));
				}
			}
			
			return targets;
		}
	}
);

Ext.define("Ametys.message.PageMessageTarget",
	{
		override: "Ametys.message.MessageTarget",
		
		statics: 
		{
			/**
			 * @member Ametys.message.MessageTarget
			 * @readonly
			 * @property {String} PAGE The target type is a page. See Ametys.plugins.web.page.PageMessageTargetFactory parameters to know more of the associated parameters. 
			 */
			PAGE: "page",
			
			/**
			 * @member Ametys.message.MessageTarget
			 * @readonly
			 * @property {String} ZONE The target type is a zone. See Ametys.plugins.web.page.PageMessageTargetFactory parameters to know more of the associated parameters. 
			 */
			ZONE: "zone",
				
			/**
			 * @member Ametys.message.MessageTarget
			 * @readonly
			 * @property {String} ZONE_ITEM The target type is a zone item. See Ametys.plugins.web.page.PageMessageTargetFactory parameters to know more of the associated parameters. 
			 */
			ZONE_ITEM: "zoneitem"
		}
	}
);