/**

 * Copyright (c) 2009-2010 Symbian Foundation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Contributors:

 */

/**

 * Landmarks.js

 * 

 * Web Runtime Service API emulation 

 * WRT v1.1

 * 

 */

(function(){

	var provider = 'Service.Landmarks',

		Interface = 'IDataSource';

	/**

	 * Landmark service

	 */

	var LandmarkService = function(){

		this.New 		= __New;

		this.GetList 	= __GetList;

		this.Add		= __Add;

		this.Delete		= __Delete;		

		this.Import 	= __Import;

		this.Export		= __Export;

		this.Organise	= __Organise;

		this.Cancel		= __Cancel;				

	}

	device.implementation.extend(provider, Interface, new LandmarkService() );

	/******************************************************/	

	/******************************************************/	

	/******************************************************/	

	var	context = device.implementation.context,

		_t = context._t,

		method = '',

		result = false,

		DBase = null;

	/**

	 * Landmarks: New

	 * @param {Object} criteria

	 */

	function __New(criteria){

		if ((result = validator.apply('New', arguments)) !== false)

			return result; 

		if (typeof criteria.Type == 'undefined') 

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingType);

		if (!/^(Landmark|Category)$/i.test(criteria.Type)) 

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.badType);		

		var returnValue;

		if(criteria.Type == 'Landmark')

		{

			returnValue = {

				'LandmarkName'		: '',

				'id' 				: '',

				'CategoryInfo'		: '',

				'LandmarkDesc'		: '',

				'LandmarkPosition'	: {

										'Latitude'	: '',

										'Longitude' : '',

										'Altitude' 	: '',

										'HAccuracy' : '',

										'VAccuracy' : '',

										'VAccuracy' : ''

									  },

				'CoverageRadius'	: '',

				'IconFile'			: '',

				'IconIndex'			: '',

				'IconMaskIndex'		: '',

				'LandmarkFields'	: {

										'Street'		: '',

										'BuildingName'	: '',

										'District'		: '',

										'City'			: '',

										'AreaCode'		: '',

										'Telephone'		: '',

										'Country'		: ''

									  }

			};

		}

		else //Category

		{

			returnValue = {

				'CategoryName'	: '',

				'id' 			: '',

				'GlobalId'		: '',

				'IconFile'		: '',

				'IconIndex'		: '',

				'IconMaskIndex'	: ''

			};

		}

		return context.Result(returnValue);

	}

	/**

	 * Landmarks: GetList

	 * @param {Object} criteria

	 * @param {Function} [callback] function for async call (optional)

	 */

	function __GetList(criteria, callback){

		if ((result = validator.apply('GetList', arguments)) !== false)

			return result; 

		if (typeof criteria.Type == 'undefined') 

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingType);

		if (!/^(Landmark|Category|Database)$/i.test(criteria.Type)) 

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.badType);

		if (criteria.Filter)

			context.notify(_t('%s:: GetList : filter not implemented in preview').arg(provider));

 		if(criteria.Sort)

			context.notify(_t('%s:: GetList : Sort is not implemented in preview').arg(provider));

		if (typeof callback == 'function') {

			return context.callAsync(this, arguments.callee, criteria, callback);

		}

		var returnValue = [], 

			match = null,

			filter = criteria.Filter || null;

		DBase = context.getData(provider);

		if (/Database/i.test(criteria.Type)) {				// Type = Database

			returnValue = context.Iterator( DBase.Database || [] );

		} else if (/Landmark/i.test(criteria.Type)){ 		// Type = Landmark

			returnValue = context.Iterator( DBase[criteria.Type] || [] );

		} else {											// Type = Category

			// @todo: apply filter criteria

			returnValue = context.Iterator( DBase[criteria.Type] || [] );

		}

		return context.Result(returnValue);

	}

	/**

	 * Landmarks: Add

	 * @param {Object} criteria

	 */

	function __Add(criteria){

		if ((result = validator.apply('Add', arguments)) !== false)

			return result; 

		if (!/^(Landmark|Category)$/i.test(criteria.Type))

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.badType);

		var Data = criteria.Data || false; 

		if(!Data){

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingData);

		}

		DBase = context.getData(provider);

		// unsupported!			

		if (Data.DatabaseURI) {

			context.notify(_t('%s:: Add : Data.DatabaseURI not implemented in preview').arg(provider));

		}

		var item;

		// Type = Landmark

		if (/Landmark/i.test(criteria.Type)){

			 if (!Data.LandmarkName)

				Data.LandmarkName="";

			var landmarkPos = Data.LandmarkPosition;

			if (typeof landmarkPos != 'undefined') {

				if ((typeof landmarkPos.Latitude == 'undefined' || typeof landmarkPos.Latitude != 'number') &&

					(typeof landmarkPos.Longitude == 'undefined' || typeof landmarkPos.Longitude != 'number') &&

					(typeof landmarkPos.Altitude == 'undefined' || typeof landmarkPos.Altitude != 'number') &&

					(typeof landmarkPos.HAccuracy == 'undefined' || typeof landmarkPos.HAccuracy != 'number') &&

					(typeof landmarkPos.VAccuracy == 'undefined' || typeof landmarkPos.VAccuracy != 'number')) {

						return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.badType);

				}

			}

			// update

			if (typeof Data.id != 'undefined') {

				if(typeof Data.id != 'string')

						return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.invalidId);

				var retIndex = findById(DBase.Landmark, Data.id); 

				if (retIndex == -1)

					return error(device.implementation.ERR_NOT_FOUND);

				DBase.Landmark[retIndex] = Data;

				item = Data;

			}

			// new

			else {

				item = context.extend({}, Data); 

				item.id = String(context.getUniqueID());

				DBase.Landmark.push(item);

			}

		} else { // Type = Category

//			alert(typeof Data.CategoryName);

			//alert("Data.id : "+Data.id);

			// update

			if (typeof Data.id != 'undefined') {

				if(typeof Data.id != 'string')

						return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.invalidId);

				var retIndex = findById(DBase.Category, Data.id); 

				if (retIndex == -1)

					return error(device.implementation.ERR_NOT_FOUND);

				DBase.Category[retIndex] = Data;					

				item = Data;

			}

			// new

			else {

				if (typeof Data.CategoryName == 'undefined')

					return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingCategoryName);	

				if(typeof Data.CategoryName != 'string' || Data.CategoryName.length <= 0)

					return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.badType);

				var retIndex = findByName(DBase.Category, Data.CategoryName); 

				if (retIndex !=  -1)

					return error(device.implementation.ERR_ENTRY_EXISTS);

				item = context.extend({}, Data); 

				item.id = String(context.getUniqueID());

				DBase.Category.push(item);

			}

		} 

		// return success

		return context.Result(item.id, device.implementation.ERR_SUCCESS);

	}

	/**

	 * Landmarks: Delete

	 * @param {Object} criteria

	 */

	function __Delete(criteria){

		if ((result = validator.apply('Delete', arguments)) !== false)

			return result; 

		if (!/^(Landmark|Category)$/i.test(criteria.Type))

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.badType);

		var Data = criteria.Data || false; 

		if(!Data){

			return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.missingData);

		}

		if (typeof Data.id == 'undefined') {

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingId);

			}

		if (typeof Data.id != 'undefined' && typeof Data.id != 'string') {

			return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.invalidId);

		}

		if(Data.id.length <= 0 )

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.invalidId);

		DBase = context.getData(provider);

		var type = criteria.Type;

		// unsupported!			

		if (Data.DBUri) {

			context.notify(_t('%s:: Delete : Data.DBUri not implemented in preview').arg(provider));

		}

		// for both Landmark & Category:

		var i,item;

		for (i in DBase[type]) {

			item = DBase[type][i];

			if (Data.id == item.id) {

				DBase[type].splice(i, 1);

			}

		}

		// return success

		return error(device.implementation.ERR_SUCCESS);				

	}

	/**

	 * Landmarks: Import

	 * @param {Object} criteria

	 */

	function __Import(criteria){

		if ((result = validator.apply('Import', arguments)) !== false)

			return result; 

		if (!/^(Landmark)$/i.test(criteria.Type))

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.badType);

		context.notify(_t('%s:: Import : not implemented in preview.').arg(provider));

		var Data = criteria.Data || false; 

		if(!Data)

			return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.missingData);

		if (!Data.SourceFile)

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingSourceFile);

		if (!Data.MimeType)

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingMimeType);

		if (!/^(application\/vnd.nokia.landmarkcollection\+xml|application\/vnd.nokia.landmark\+wbxml)$/i.test(Data.MimeType))

			return error(device.implementation.ERR_SERVICE_NOT_SUPPORTED, msg.invalidMime);

		return error(device.implementation.ERR_SUCCESS);		

	}

	/**

	 * Landmarks: Export

	 * @param {Object} criteria

	 */

	function __Export(criteria){

		if ((result = validator.apply('Export', arguments)) !== false)

			return result; 

		context.notify(_t('%s:: Export : not implemented in preview.').arg(provider));

		if (!/^(Landmark)$/i.test(criteria.Type))

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.badType);

		var Data = criteria.Data || false; 

		if(!Data){

			return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.missingData);

		}

		if (!Data.DestinationFile)

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingDestFile);

		if (!Data.MimeType)

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingMimeType);

		if (!Data.IdList)

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingIdList);

		return error(device.implementation.ERR_SUCCESS);		

	}

	/**

	 * Landmarks: Organise

	 * @param {Object} criteria

	 */

	function __Organise(criteria){

		if ((result = validator.apply('Organise', arguments)) !== false)

			return result; 

		if (!/^(Landmark)$/i.test(criteria.Type))

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.badType);

		var Data = criteria.Data || false; 

		if(!Data){

			return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.missingData);

		}

		if (!Data.id || Data.id == "")

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.invalidId);

		DBase = context.getData(provider);

		var categories = DBase['Category'];

		var landmarks  = DBase['Landmark'];

		var found = false;

		for(var i=0;i<categories.length;i++)

		{

			var category = categories[i];

			if (category.id == Data.id) {

				found = true;

				break;

			}

		}

		if(!found)

			return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.invalidId);

		try{

			if(!Data.IdList || Data.IdList.length <=0)

			{

				return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.invalidId);

			}

		}catch(e){

			return error(device.implementation.ERR_BAD_ARGUMENT_TYPE, msg.invalidId);

		}

		if (!/^(Associate|Disassociate)$/i.test(criteria.OperationType))

			return error(device.implementation.ERR_INVALID_SERVICE_ARGUMENT, msg.invalidOpType);

		context.notify(_t('%s:: Organise : not implemented in preview.').arg(provider));

		if(/^Associate$/i.test(criteria.OperationType))

		{

			for(var i=0;i<landmarks.length;i++)

			{

				for(var j=0;j<Data.IdList.length;j++)

				{

					if(landmarks[i] == Data.IdList[j])

					{

						if(!landmarks[i].CategoryInfo)

						{

							landmarks[i].CategoryInfo = new Array();

							landmarks[i].CategoryInfo.push(Data.id);					

						}

						else{

							var landmark = landmarks[i];

							var found = false;

							for(var k=0;k<landmark.CategoryInfo.length;k++)

							{

								if(landmark.CategoryInfo[k] == Data.id)

									found = true;

							}

							if(!found)

								landmark.CategoryInfo.push(Data.id);

						}

					}

				}

			}

		}

		else

		{

			for(var i=0;i<landmarks.length;i++)

			{

				for(var j=0;j<Data.IdList.length;j++)

				{

					if(landmarks[i] == Data.IdList[j] && landmarks[i].CategoryInfo != undefined)

					{

						var landmark = landmarks[i];

						for(var k=0;k<landmark.CategoryInfo.length;k++)

						{

							if(landmark.CategoryInfo[k] == Data.id)

								landmark.CategoryInfo.splice(k,1);

						}

					}

				}

			}

		}

		return error(device.implementation.ERR_SUCCESS);		

	}

	/**

	 * Landmarks: Cancel

	 * @param {Object} criteria

	 */

	function __Cancel(criteria){

		method = 'Cancel';

		if ((result = validator.apply('Cancel', arguments)) !== false)

			return result;		

		if (!criteria.TransactionID)

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingTID);

		clearTimeout(criteria.TransactionID);

		return context.ErrorResult(device.implementation.ERR_SUCCESS);

	}

	/*******************************

	 * helper functions

	 *******************************/

	function error(code, msg /*, args...*/){

		var args = ['Landmarks',method].concat([].slice.call(arguments,2));

		msg = msg ? _t().arg.apply(msg,args) : undefined;

		return context.ErrorResult(code, msg);

	}

	/**

	 * validate common input arguments

	 * 'this' is string (object) name of calling function

	 * 

	 * @param {arguments} arguments of calling function

	 * @return {Result} Result object if error, false if no error.

	 */

	function validator() {

		method = ''+this;

		var	failed = false,

			criteria = arguments[0] || false;

		if (!criteria || typeof criteria != 'object')

			return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingType);

		return failed;

	}