/**

 * 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:

 * Nokia Corporation - initial contribution.

 * 

 * Contributors:

 * 

 * Description:

 * 

 */

/**

 * Logging.js

 * 

 * Web Runtime Service API emulation 

 * WRT v1.1

 * 

 */

(function(){

	var provider = 'Service.Logging',

		Interface = 'IDataSource';

	/**

	 * Landmark service

	 */

	var LoggingService = function(){

		this.Add 					= __Add;

		this.GetList 				= __GetList;

		this.Delete					= __Delete;

		this.RequestNotification	= __RequestNotification;		

		this.Cancel					= __Cancel;		

	}

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

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

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

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

	var	context = device.implementation.context,

		_t = context._t,

		method = '',

		result = false,

		DBase = null;

	var transactionIds = new Array();

	var tTransactionId = -1;

	var isTraceInProgress = false;

	var criteriaReq;

	var callbackReq;

	/**

	 * Logging: Add

	 * @param {Object} criteria

	 * @param (function) callback

	 */

	function __Add(criteria, callback, flag){

		method = "Add";

		//	Async call

		flag = flag || false;

		if (!flag) {

			var result = ValidateAdd(criteria, callback);

			if (result.ErrorCode != 0) 

				return result;

		}			

		if(typeof callback == 'function')

		{

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

		}

		DBase = context.getData(provider);

		var returnValue = DBase[criteria.Type];

		criteria.Item.id = 	GenerateRandomNumber()+'';

		criteria.Item["EventTime"] = GetCurrDate();

		returnValue.push(criteria.Item);

		return context.Result(criteria.Item.id,0);

	}

	/**

	 * Logging: GetList

	 * @param {Object} criteria

	 * @param (function) callback

	 */

	function __GetList(criteria, callback, flag){	

		method = "GetList";

		//	Async call

		flag = flag || false;

		if (!flag) {

			var result = ValidateGetList(criteria, callback);

			if (result.ErrorCode != 0) 

				return result;

		}			

		if(typeof callback == 'function')

		{

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

		}

		if(criteria.Filter){

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

		}

		DBase = context.getData(provider);

		var returnValue;

		// @todo: apply filter criteria

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

		return context.Result(returnValue,0);

	}

	/**

	 * Logging: Delete

	 * @param {Object} criteria

	 * @param (function) callback

	 */

	function __Delete(criteria, callback, flag){

		method = "Delete";

		//	Async call

		flag = flag || false;		

		if (!flag) {

			if (!criteria || !criteria.Type) 

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

			if (typeof criteria.Type != 'string') 

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

			if (criteria.Type != 'Log') 

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

			if (!criteria.Data) 

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

			if(typeof criteria.Data != 'object')

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

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

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

			if (typeof criteria.Data.id != "string") 

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

			if(criteria.Data.id == '')

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

		}

		DBase = context.getData(provider);

		var returnValue,found = false;

		returnValue = DBase[criteria.Type];

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

			if(returnValue[i].id == criteria.Data.id)

			{

				found = true;

				returnValue.splice(i,1);

			}			

		}

		if(!found)

			return error(device.implementation.ERR_NOT_FOUND, msg.msgidInvalid);

		return context.Result(undefined,0);

	}

	/**

	 * Logging: RequestNotification

	 * @param {Object} criteria

	 * @param (function) callback

	 */

	function __RequestNotification(criteria, callback, flag){

		method = "RequestNotification";

		//	Async call

		flag = flag || false;		

		if (!flag) {

			if (!criteria || !criteria.Type) 

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

			if (typeof criteria.Type != 'string') 

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

			if (criteria.Type != 'Log') 

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

			if (!criteria.Filter)

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

			if(typeof criteria.Filter != 'object') 

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

			if(typeof criteria.Filter.DelayTime == 'undefined') 

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

			if(typeof criteria.Filter.DelayTime != 'number')

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

			if(criteria.Filter.DelayTime <= 0)

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

			if(criteria.Filter.DelayTime < 1000000 )

			{

				criteria.Filter.DelayTime = 1000000;

				context.notify(_t('%s:: RequestNotification : Using DelayTime = 1000000').arg(provider));

			}

		}

		if(typeof callback != 'function')

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

		criteriaReq = criteria;

		callbackReq = callback;

		isTraceInProgress = true;

		return notificationCall(criteria,callback);

	}

	/**

	 * Logging: Cancel

	 * @param {Object} criteria

	 * @param (function) callback

	 */

	function __Cancel(criteria){

			method = "Cancel";

			if (!criteria || typeof criteria.TransactionID == 'undefined') 

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

			if (typeof criteria.TransactionID != 'number') 

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

			clearTimeout(criteria.TransactionID);

			if (criteria.TransactionID == tTransactionId) {

				isTraceInProgress = false;

				tTransactionId = -1;

			}

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

	}

	/**

	 * Location: error

	 * @param {number,string} ErrorCode and ErrorString

	 * Replaces Error String with method name

	 */

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

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

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

		return context.ErrorResult(code, msg);

	}

	/**

	 * Logging: notificationCall

	 * @param {} 

	 * This function Calls callback function after given delay

	 */

	function notificationCall(){

		var tid = setTimeout(function(){

		if(!isTraceInProgress)

			return;

		DBase = context.getData(provider);

		var returnValue;

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

		var result,

			eventCode = {completed:2, error:4, progress:9},

		code = eventCode.completed;

		callbackReq(tTransactionId,code,context.Result(returnValue,0));

		//notificationCall();

		}, criteriaReq.Filter.DelayTime/1000);

		if(tTransactionId == -1)

			tTransactionId = tid;

		return context.AsyncResult(tTransactionId);

	}

	/**

	 * Helper functions

	 */

	/**

	 * GenerateRandomNumber

	 * @param {}array of log data for getting unique ID 

	 * 

	 */

	function GenerateRandomNumber(arr)

	{

		var randomnumber = Math.floor(Math.random() * 10001);

		randomnumber +=200;

		return randomnumber;

	}

	/**

	 * GetCurrDate

	 * @param {}Gets date in internet format

	 * 

	 */

	function GetCurrDate()

	{

		var d_names = new Array("Sunday", "Monday", "Tuesday",

		"Wednesday", "Thursday", "Friday", "Saturday");

		var m_names = new Array("January", "February", "March", 

		"April", "May", "June", "July", "August", "September", 

		"October", "November", "December");

		var ampm = "am";

		var d = new Date();

		var curr_day = d.getDay();

		var curr_date = d.getDate();

		if(curr_date <10)

			curr_date = "0"+curr_date;

		var curr_month = d.getMonth();

		var curr_year = d.getFullYear();

		var curr_hour = d.getHours();

		if(curr_hour > 11)

		{

			ampm = "pm";

		}

		else if(curr_hour <10)

		{

			curr_hour = "0"+curr_hour;

		}	

		var curr_min = d.getMinutes();

		if(curr_min <10)

			curr_min = "0"+curr_min;

		var curr_sec = d.getSeconds();

		if(curr_sec <10)

			curr_sec = "0"+curr_sec;

		var strDate = d_names[curr_day]+', '+curr_date+' '+m_names[curr_month]+', '+curr_year+' '+curr_hour+':'+curr_min+':'+curr_sec+' '+ampm;

		return strDate;

	}	

	/**

	 * ValidateAdd

	 * @param {object,function}

	 * Validates ADD arguments

	 */	

	function ValidateAdd(criteria,callback)

	{

		var type;

		if(!criteria || !criteria.Type)

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

		if (typeof criteria.Type != 'string') 

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

		if(criteria.Type != 'Log')

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

		if (!criteria.Item)

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

		if(typeof criteria.Item != 'object') 

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

		if(typeof criteria.Item.EventType == "undefined")

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

		if(typeof criteria.Item.EventType != "number" )

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

		if(typeof criteria.Item.EventType == "number" && !(criteria.Item.EventType >=0 && criteria.Item.EventType <=4))

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

		type = typeof criteria.Item.RemoteParty;

		if(type != 'undefined' &&  type != "string")

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

		type = typeof criteria.Item.Direction;

		if (type != 'undefined') {

			if (type != "number") 

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

			if (type == "number" && (criteria.Item.Direction < 0 || criteria.Item.Direction > 6)) 

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

		}

		type = typeof criteria.Item.EventDuration;

		if(type != 'undefined' &&  type != "number")

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

		type = typeof criteria.Item.DeliveryStatus;

		if (type != 'undefined') {

			if (type != "number") 

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

			if (type == "number" && (criteria.Item.DeliveryStatus < 0 || criteria.Item.DeliveryStatus > 6)) 

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

		}

		type = typeof criteria.Item.Subject;

		if(type != 'undefined' &&  type != "string")

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

		type = typeof criteria.Item.PhoneNumber;

		if(type != 'undefined' &&  type != "string")

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

		type = typeof criteria.Item.Link;

		if(type != 'undefined' &&  type != "number")

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

		type = typeof criteria.Item.LogFlags;

		if(type != 'undefined' && (type != "number" || (criteria.Item.LogFlags != 1 && criteria.Item.LogFlags != 0)))

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

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

	}	

	/**

	 * ValidateGetList

	 * @param {object,function}

	 * Validates GetList function

	 */	

	function ValidateGetList(criteria,callback)

	{

		var type;

		if(!criteria || !criteria.Type)

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

		if (typeof criteria.Type != 'string') 

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

		if(criteria.Type != 'Log')

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

		type = typeof criteria.Filter;

		if(type != 'undefined' &&  type != "object")

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

		if(type == 'undefined')

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

		type = typeof criteria.Filter.id;

		if(type != 'undefined' &&  type != "string")

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

		if(type != 'undefined')

			return context.ErrorResult(device.implementation.ERR_SUCCESS, "");  // if id is given all other filters will be ignored

		type = typeof criteria.Filter.EventType;

		if (type != 'undefined') {

			if (type != "number") 

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

			if (type != "number" || !(criteria.Filter.EventType >= 0 && criteria.Filter.EventType <= 4)) 

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

		}		

		type = typeof criteria.Filter.RecentList;

		if (type != 'undefined') {

			if (type != "number") 

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

			if (type == "number" && (criteria.Filter.RecentList < -1 || criteria.Filter.RecentList > 3)) 

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

		}

		type = typeof criteria.Filter.RemoteParty;

		if(type != 'undefined' &&  type != "string")

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

		type = typeof criteria.Filter.Direction;

		if (type != 'undefined') {

			if (type != "number") 

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

			if (type == "number" && (criteria.Filter.Direction < 0 || criteria.Filter.Direction > 6)) 

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

		}

		type = typeof criteria.Filter.DeliveryStatus;

		if (type != 'undefined') {

			if (type != "number") 

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

			if (type == "number" && (criteria.Filter.DeliveryStatus < 0 || criteria.Filter.DeliveryStatus > 6)) 

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

		}

		type = typeof criteria.Filter.EndTime;

		if(type != 'undefined' && (type != "object" ||  typeof criteria.Filter.EndTime.getTime != "function"))

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

		type = typeof criteria.Filter.PhoneNumber;

		if(type != 'undefined' &&  type != "string")

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

		type = typeof criteria.Filter.LogFlags;

		if (type != 'undefined') {

			if (type != "number") 

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

			if (type == "number" && (criteria.Filter.LogFlags != 1 && criteria.Filter.LogFlags != 0)) 

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

		}

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

	}	

	/** 

	 * error messages

	 * order of %s args: Service name, method name, parameter name 

	 */

	var msg = {

		msgTypeInvalid 				: '%s:%s:TypeInvalid',

		msgTypeMissing				: '%s:%s:Type Missing',

		msgFilterInvalid			: '%s:%s:FilterInvalid',

		msgidInvalid				: '%s:%s:idInvalid',

		msgRecentListInvalid		: '%s:%s:RecentListInvalid',

		msgPhoneNumberInvalid		: '%s:%s:PhoneNumberInvalid',

		msgDirectionInvalid			: '%s:%s:DirectionInvalid',

		msgDeliveryStatusInvalid	: '%s:%s:DeliveryStatusInvalid',

		msgLogFlagsInvalid			: '%s:%s:LogFlagsInvalid',

		msgEndTimeInvalid			: '%s:%s:EndTimeInvalid',

		msgRemotePartyInvalid		: '%s:%s:RemotePartyInvalid',

		msgEventTypeInvalid			: '%s:%s:EventTypeInvalid',