/*

* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:

* Definition file for the TimeZoneClient class.

*

*/

// System includes

#include <QList>

#include <QStandardItemModel>

#include <QtAlgorithms>

#include <tzlocalizationdatatypes.h>

#include <tzlocalizer.h>

#include <tz.h>

#include <vtzrules.h>

// User includes

#include "timezoneclient.h"

#include "clockcommon.h"

#include "clockserverclt.h"

const int KDaysInWeek(7);

const int KZerothRule(0);

const int KOneHour(1);

const int KNoDifference(0);

/*!

	\class TimezoneClient

	This class is the QObject based client interface for services offered by

	tzserver and timezonelocalization.

 */

/*!

 */

{

	TCallBack callback(environmentCallback, this);

	mNotifier = CEnvironmentChangeNotifier::NewL(

			CActive::EPriorityStandard, callback);

	mNotifier->Start();

	mTzLocalizer = CTzLocalizer::NewL();

}

/*!

	Destructor.

 */

TimezoneClient::~TimezoneClient()

{

	if (mNotifier) {

		mNotifier->Cancel();

		delete mNotifier;

		mNotifier = 0;

	}

	if (mWorldClockModel) {

		mWorldClockModel->clear();

	}

	if (mTzLocalizer) {

		delete mTzLocalizer;

		mTzLocalizer = NULL;

	}

	if (mTimeZoneIds.count()) {

		mTimeZoneIds.clear();

	}

}

/*!

	This functions returns a QList of location info which represent all the

	cities preset in the device returned by the tz server.

	\return QList<LocationInfo> A list of location info objects which contain a

			valid cityName, countryName, tz id and city group id. None of the other

			data is filled.

 */

{

	// Get the cities, in alphabetical-ascending sorted order.

	CTzLocalizedCityArray* cityArray =

	ASSERT(cityArray);

	CleanupStack::PushL(cityArray);

	int cityCount = cityArray->Count();

	CTzLocalizedCityGroup* country = 0;

	int prevGroupId = -1;

	TPtrC countryName;

	// Now get the country\city-group of each of the city.

	// Print the timezone id and city group id as well.

	for (int iter = 0; iter < cityCount; iter++) {

		CTzLocalizedCity* localizedCity = &(cityArray->At(iter));

		TPtrC cityName(localizedCity->Name());

		int tzId(localizedCity->TimeZoneId());

		if(-1==mTimeZoneIds.indexOf(tzId)) {

			mTimeZoneIds.append(tzId);

		}

		int cityGroupId(localizedCity->GroupId());

		if (cityGroupId != prevGroupId) {

			prevGroupId = cityGroupId;

			if (country) {

				delete country;

			}

			countryName.Set(country->Name());

		}

		// Now insert that data into the info list.

		LocationInfo cityInfo;

		cityInfo.cityGroupId = cityGroupId;

		cityInfo.timezoneId = tzId;

		cityInfo.cityName = QString::fromUtf16(

				cityName.Ptr(), cityName.Length());

		cityInfo.countryName = QString::fromUtf16(

				countryName.Ptr(), countryName.Length());

	}

	// Cleanup.

	CleanupStack::PopAndDestroy(cityArray);

}

bool TimezoneClient::getUtcDstOffsetL(int& dstOffset, const CTzId& timezoneId)

{

	RTz tzHandle;

	User::LeaveIfError(tzHandle.Connect());

	CleanupClosePushL(tzHandle);

	// Local time.

	TTime homeTime;

	homeTime.HomeTime();

	TDateTime dateTime;

	dateTime = homeTime.DateTime();

	// Get the CTzRules for the current year and for the given time zone id.

	CTzRules* timezoneRules = tzHandle.GetTimeZoneRulesL(

			timezoneId, dateTime.Year(), dateTime.Year(), ETzWallTimeReference);

	CleanupStack::PushL(timezoneRules);

	// Get the Actualised rules for the same year.

	// These are the DST rules from which we get the iNewOffset.

	CVTzActualisedRules *actualizedRules =

			CVTzActualisedRules::NewL(

					homeTime.DateTime().Year(), homeTime.DateTime().Year());

	CleanupStack::PushL(actualizedRules);

	timezoneRules->GetActualisedRulesL(*actualizedRules);

	// This way of fetching initial offset is being used rather than

	// tzRules->InitialStdTimeOffset() because in some cases,

	// the offset returned is incorrect. (For ex: Argentina and Canada/Iqaluit)

	RArray<TInt> timeZones;

	RArray<TInt> zoneOffsets;

	// Append the current timezone ID and request for the standard offset

	timeZones.Append(timezoneId.TimeZoneNumericID());

	tzHandle.GetOffsetsForTimeZoneIdsL(timeZones, zoneOffsets);

	// The initial offset or the standard offset (w/o DST)

	int initialTimeZoneOffset = zoneOffsets[ 0 ];

	// Close the resource handles

	timeZones.Close();

	zoneOffsets.Close();

	// The number of actualised rules

	int ruleCount = actualizedRules->Count();

	for (int ruleIndex(0); ruleIndex < ruleCount; ruleIndex++) {

		const TVTzActualisedRule& tVTzactRule = (*actualizedRules)[ruleIndex];

		// If the standard offset and the new offset do not match then we have

		// a dst offset. Technically if a timezone has DST then it can have a

		// max of two offsets. One is the standard which doesn't show the DST

		// usage, and the other is the DST offset which is

		// standard offset + the amount of DST.

		if (initialTimeZoneOffset != tVTzactRule.iNewOffset) {

			dstOffset = tVTzactRule.iNewOffset;

			CleanupStack::PopAndDestroy(actualizedRules);

			CleanupStack::PopAndDestroy(timezoneRules);

			CleanupStack::PopAndDestroy(&tzHandle);

			return true;

		} else {

			dstOffset = initialTimeZoneOffset;

		}

	}

	CleanupStack::PopAndDestroy(actualizedRules);

	CleanupStack::PopAndDestroy(timezoneRules);

	CleanupStack::PopAndDestroy(&tzHandle);

	return false;

}

LocationInfo TimezoneClient::getCurrentZoneInfoL()

{

	// Current zone info.

	LocationInfo currentLocation;

	int timezoneId(0);

	int utcOffset(0);

	// Connect to the timezone server.

	RTz tzHandle;

	User::LeaveIfError(tzHandle.Connect());

	CleanupClosePushL(tzHandle);

	// Get the current timezone ID.

	CTzId* tzId;

	tzId = tzHandle.GetTimeZoneIdL();

	CleanupStack::PushL(tzId);

	// TODO: Get the standard offset for current timezone.

	// This way of fetching initial offset is being used rather than

	// tzRules->InitialStdTimeOffset()because in some cases, the offset returned

	// is incorrect. (For ex: Argentina and Canada/Iqaluit)

	RArray<TInt> timeZones;

	RArray<TInt> zoneOffsets;

	// Append the current timezone ID and request for the standard offset

	timeZones.Append(tzId->TimeZoneNumericID());

	tzHandle.GetOffsetsForTimeZoneIdsL(timeZones, zoneOffsets);

	// The initial offset or the standard offset (w/o DST)

	int initialTimeZoneOffset = zoneOffsets[0];

	// Close the resource handles

	timeZones.Close();

	zoneOffsets.Close();

	// Get all the localized timezones for the current timezone ID.

	CTzLocalizedTimeZone* localizedTimeZone(NULL);

			}

			}

		}

		// Cleanup.

	}

	// Cleanup.

	CleanupStack::PopAndDestroy( tzId );

	CleanupStack::PopAndDestroy( &tzHandle );

	return currentLocation;

}

void TimezoneClient::setAsCurrentLocationL(LocationInfo &location)

{

			"In time zone client setAsCurrentLocationL " + location.cityName +

			" " +

			location.countryName +

			" " +

	TPtrC ptrCityName(

			reinterpret_cast<const TText*>(location.cityName.constData()));

	CTzLocalizedCity* localizedCity =

	CleanupStack::PushL( localizedCity );

			*localizedCity, CTzLocalizedTimeZone::ECurrentZone);

	// Cleanup.

	CleanupStack::PopAndDestroy( localizedCity );

}

bool TimezoneClient::isDSTOnL(int timezoneId)

{

	bool returnVal( false );

	CTzId* tzId = CTzId::NewL( timezoneId );

	CleanupStack::PushL( tzId );

	RTz tzHandle;

	User::LeaveIfError( tzHandle.Connect() );

	CleanupClosePushL( tzHandle );

	returnVal = tzHandle.IsDaylightSavingOnL( *tzId );

	tzHandle.Close();

	CleanupStack::PopAndDestroy( &tzHandle );

	CleanupStack::PopAndDestroy( tzId );

	return returnVal;

}

int TimezoneClient::getStandardOffset(int timezoneId)

{

	RTz tzHandle;

	User::LeaveIfError(tzHandle.Connect());

	CleanupClosePushL(tzHandle);

	RArray<int> idArray;

	RArray<int> offsetArray;

	idArray.Append(timezoneId);

	tzHandle.GetOffsetsForTimeZoneIdsL(idArray, offsetArray);

	int stdOffset = offsetArray[0];

	offsetArray.Close();

	idArray.Close();

	// Cleanup.

	CleanupStack::PopAndDestroy(&tzHandle);

	return stdOffset;

}

void TimezoneClient::getDstRulesL(

		QDateTime &startTime, QDateTime &endTime, int timezoneId)

{

	RTz tzHandle;

	User::LeaveIfError(tzHandle.Connect());

	CleanupClosePushL(tzHandle);

	// Local time.

	TTime homeTime;

	homeTime.HomeTime();

	TDateTime dateTime;

	dateTime = homeTime.DateTime();

	CTzId *tzId = CTzId::NewL(timezoneId);

	CleanupStack::PushL(tzId);

	// Get the CTzRules for the current year and for the given time zone id.

	CTzRules* timezoneRules = tzHandle.GetTimeZoneRulesL(

			*tzId, dateTime.Year(), dateTime.Year(), ETzWallTimeReference);

	CleanupStack::PushL(timezoneRules);

	// Get the Actualised rules for the same year.

	// These are the DST rules from which we get the iNewOffset.

	CVTzActualisedRules *actualizedRules = CVTzActualisedRules::NewL(

			homeTime.DateTime().Year(), homeTime.DateTime().Year() );

	CleanupStack::PushL(actualizedRules);

	timezoneRules->GetActualisedRulesL(*actualizedRules);

	// This way of fetching initial offset is being used rather than

	// tzRules->InitialStdTimeOffset() because in some cases,

	// the offset returned is incorrect. (For ex: Argentina and Canada/Iqaluit)

	RArray<TInt> timeZones;

	RArray<TInt> zoneOffsets;

	// Append the current timezone ID and request for the standard offset