/*

* Copyright (c) 2009 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 class ClockAlarmListModel.

*

*/

// System includes

#include <QTimer>

#include <QStandardItemModel>

#include <QStandardItem>

#include <HbIcon>

// User includes

#include "clockalarmlistmodel.h"

#include "alarmclient.h"

#include "timezoneclient.h"

#include "clockalarmlistitemprototype.h"

#include "clockappcontrollerif.h"

#include "settingsutility.h"

// Constants

const int KOneHourInMinute(60);

const int KOneMinuteInSecons(60);

const int KSecondsInOneDay(24 * 60 * 60);

/*!

	\class ClockAlarmListModel

	This is the source model class for the clock main view. This owns

	a QStandardItemModel which is a model for the data containing alarms.

 */

/*!

	Constructor.

	\param parent Parent of type QObject.

 */

ClockAlarmListModel::ClockAlarmListModel(

		ClockAppControllerIf &controllerIf, QObject *parent)

:QObject(parent),

 mSourceModel(0),

 mAppControllerIf(controllerIf)

{

	// Construct the source model.

	mSourceModel = new QStandardItemModel(0, 1, this);

	// Register to listen to the alarm state changes.

	mAppControllerIf.alarmClient()->startListener();

	connect(

			mAppControllerIf.alarmClient(), SIGNAL(alarmStateChanged(int)),

			this, SLOT(updateSourceModel(int)));

	connect(

			mAppControllerIf.timezoneClient(), SIGNAL(timechanged()),

			this, SLOT(updateRemainingTime()));

	// Start a timer. For updating the remaining alarm time.

	mTickTimer = new QTimer(this);

	connect(

			mTickTimer, SIGNAL(timeout()),

			this, SLOT(updateRemainingTime()));

}

/*!

	Destructor.

 */

ClockAlarmListModel::~ClockAlarmListModel()

{

	if (mSourceModel) {

		delete mSourceModel;

		mSourceModel = 0;

	}

}

/*!

	Populates the source model & starts the timer for 1 minute.

 */

void ClockAlarmListModel::populateModel()

{

	// Populate the model in a different thread.

	QTimer::singleShot(1, this, SLOT(populateSourceModel()));

}

/*!

	Returns the source model to be used with clock main view.

	\return QAbstractItemModel

	\sa QAbstractItemModel, HbListView.

 */

QAbstractItemModel *ClockAlarmListModel::sourceModel()

{

	return mSourceModel;

}

/*!

	Populates the source model.

 */

void ClockAlarmListModel::populateSourceModel()

{

	// Clear the model if it has any data already.

	mSourceModel->clear();

	mSourceModel->setColumnCount(1);

	QList<AlarmInfo> alarmInfoList;

	// Get the list of pending clock alarms.

	mAppControllerIf.alarmClient()->getAlarmList(alarmInfoList);

	// First create a list of alarms with the order of active & inactive alarms.

	AlarmInfo alarminfo;

	for (int index = 0; index < alarmInfoList.count(); index++) {

		alarminfo = alarmInfoList[index];

		if (Enabled == alarminfo.alarmStatus) {

			// Append alarm into the source model.

			appendAlarmToModel(alarminfo);

		}

	}

	for (int index = 0; index < alarmInfoList.count(); index++) {

		alarminfo = alarmInfoList[index];

		if (Disabled == alarminfo.alarmStatus) {

			// Append alarm into the source model.

			appendAlarmToModel(alarminfo);

		}

	}

	if (0 < getActiveAlarmCount() && !mTickTimer->isActive()) {

		// Start the Timer for 1 minute.

		mTickTimer->start(60000 - 1000 * QTime::currentTime().second());

	}

}

/*!

	Calculates the remaining time for the given alarm.

	\param alarmInfo AlarmInfo containing the active alarm.

 */

QString ClockAlarmListModel::calculateRemainingTime(AlarmInfo alarmInfo)

{

	QDateTime currentDateTime = QDateTime::currentDateTime();

	QDateTime alarmTime = QDateTime(

			alarmInfo.alarmDateTime, alarmInfo.nextDueTime);

	QString timeNote;

	// TODO: method getRemainingSeconds is used since secsTo API is

	// not returning the proper value.

	// int remianSecs = currentDateTime.secsTo(alarmTime);

	int remainSecs = getRemainingSeconds(alarmTime);

	QDateTime timeLeft(QDate(2009,1,1), QTime(0,0)); //do -1 for day always.

	QDateTime temp = timeLeft.addSecs(remainSecs);

	int hourleft = temp.time().hour();

	int minleft = temp.time().minute();

	int secleft = temp.time().second();

	int dayleft = temp.date().day() - 1;

	if (dayleft >= 1) {

		hourleft += (dayleft * 24);

	}

	QString formatTimeNote;

	if (hourleft <= 48) {

		switch (hourleft) {

			case 1: {

				if (1 == minleft) {

					formatTimeNote =

						hbTrId("txt_clock_main_view_setlabel_in_1hr_2min");

				} else {

					formatTimeNote =

						hbTrId("txt_clock_main_view_setlabel_in_1hr_2mins");

				}

			}

			break;

			default: {

				if (1 == minleft) {

					formatTimeNote =

						hbTrId("txt_clock_main_view_setlabel_in_1hrs_2min");

				} else {

					formatTimeNote =

						hbTrId("txt_clock_main_view_setlabel_in_1hrs_2mins");

				}

			}

		}

		timeNote = formatTimeNote.arg(

				QString::number(hourleft), QString::number(minleft));

	} else {

		formatTimeNote = hbTrId("txt_clock_main_view_setlabel_in_1days");

		timeNote = formatTimeNote.arg(QString::number(dayleft));

	}

	return timeNote;

}

/*!

	Gets remaining seconds to the alarm time from current date time.

	\param alarmDateTime reference to the alarm date time.

	\return int returns the remaining seconds calculated.

 */

int ClockAlarmListModel::getRemainingSeconds(QDateTime &alarmDateTime)

{

	int remainingSeconds;

	QDateTime currentDateTime = QDateTime::currentDateTime();

	int currentTimeInSec =

			(currentDateTime.time().hour()

					* KOneHourInMinute * KOneMinuteInSecons)

			+ (currentDateTime.time().minute() * KOneMinuteInSecons)

			+ currentDateTime.time().second();

	int alarmTimeInSec =

			alarmDateTime.time().hour() * KOneHourInMinute * KOneMinuteInSecons

			+ alarmDateTime.time().minute() * KOneMinuteInSecons

			+ alarmDateTime.time().second();

	int dayInterval =

			alarmDateTime.date().day() - currentDateTime.date().day();

	if (dayInterval) {

		alarmTimeInSec += (dayInterval*KSecondsInOneDay);

	}

	remainingSeconds = alarmTimeInSec - currentTimeInSec;

	return remainingSeconds;

}

/*!

	Slot which Updates the source model with the given alarm `id'.

	The alarm could be newly added or deleted or have undergone a status change

	or have just been modified.

	\param id of alarm, identifies the alarm which was changed.

 */

void ClockAlarmListModel::updateSourceModel(int alarmId)

{

	Q_UNUSED(alarmId)

	int alarmInfoCount;

	int modelCount;

	bool newAlarm = false;

	bool alarmDeleted = false;

	// Get the list of pending clock alarms from server.

	QList<AlarmInfo> alarmInfoList;

	mAppControllerIf.alarmClient()->getAlarmList(alarmInfoList);

	modelCount = mSourceModel->rowCount();

	// First create a list of alarms with the order of active & inactive alarms.

	QList<AlarmInfo> alarmDisplayList;

	AlarmInfo alarminfo;

	for (int index = 0; index < alarmInfoList.count(); index++) {

		alarminfo = alarmInfoList[index];

		if (Enabled == alarminfo.alarmStatus

				&& Notified != alarminfo.alarmState) {

			// Append only active alarms to the alarmDisplayList.

			alarmDisplayList.append(alarminfo);

		}

	}

	for (int index = 0; index < alarmInfoList.count(); index++) {

		alarminfo = alarmInfoList[index];

		if (Disabled == alarminfo.alarmStatus) {

			// Append only active alarms to the alarmDisplayList.

			alarmDisplayList.append(alarminfo);

		}

	}

	alarmInfoCount = alarmDisplayList.count();

	AlarmInfo alarmInfo;

	int index = 0;

	if (alarmInfoCount > modelCount) {

		// If alarm count from server is more than in model then, a new alarm

		// has been queued into server.

		newAlarm = true;

	} else if (alarmInfoCount < modelCount) {

		// If alarm count from server is less than in model then, an alarm

		// has been deleted from server.

		alarmDeleted = true;

	}

	if (0 < modelCount) {

		int maxCount = 0;

		if (newAlarm) {

			maxCount = modelCount;

		} else if (alarmDeleted) {

			maxCount = alarmInfoCount;

		} else {

			maxCount = alarmInfoCount;

		}

		// Update the alarm details.

		for (; index < maxCount; index++) {

			alarmInfo = alarmDisplayList[index];

			QModelIndex modelIndex = mSourceModel->index(index,0);

			if (modelIndex.isValid()) {

				updateAlarmDetails(modelIndex, alarmInfo);

			}

		}

	}

	if (newAlarm) {

		emit changeAlarmListDisplay();

		alarmInfo = alarmDisplayList[index];

		appendAlarmToModel(alarmInfo);

	}

	if (alarmDeleted) {

		QModelIndex modelIndex = mSourceModel->index(index, 0);

		if (modelIndex.isValid()) {

			mSourceModel->removeRow(modelIndex.row());

		}

		// If alarm count is "0" then hide the alarmlist in the view.

		if (0 == mSourceModel->rowCount()) {

			emit changeAlarmListDisplay();

		}

	}

	if (0 < getActiveAlarmCount()) {

		if (!mTickTimer->isActive()) {

			// Start the Timer for 1 minute.

			mTickTimer->start(60000 - 1000 * QTime::currentTime().second());

		}

	} else {

		if (mTickTimer->isActive()) {

			// Stop the timer if no more active alarms are present.

			mTickTimer->stop();

		}

	}

}

/*!

	Slot which Updates the remaining time field in the alarms list for all the

	alarms.

 */

void ClockAlarmListModel::updateRemainingTime()

{

	// Get the list of pending clock alarms from server.

	AlarmInfo alarmInfo;

	for (int row = 0; row < mSourceModel->rowCount(); row++) {

		// Get the data for the alarm.

		QList<QVariant> alarmData =

				mSourceModel->index(row, 0).data(AlarmDetails).toList();

		int alarmId = alarmData.at(0).value<int>();

		int error = mAppControllerIf.alarmClient()->getAlarmInfo(

				alarmId, alarmInfo);

		if (-1 != error) {

			if (Enabled == alarmInfo.alarmStatus) {

				// Get the model index.

				QModelIndex mdlIndex = mSourceModel->index(row, 0);

				if (Notified != alarmInfo.alarmState) {

					QStringList displayStringList =

							getDisplayStringListforAlarmItem(alarmInfo);

					mSourceModel->setData(

							mdlIndex, displayStringList, Qt::DisplayRole);

				}

			}

		}

	}

	// Start the Timer for 1 minute.

	mTickTimer->start(60000);

}

/*!

	Returns the stringList to be set for "displayRole" for the alarm item.

	\param alarmInfo AlarmInfo containing the alarm.

	\return QStringList contains the stringList to be set.

 */

QStringList ClockAlarmListModel::getDisplayStringListforAlarmItem(

		AlarmInfo alarmInfo)

{

	QStringList displayStringList;

	QString timeString;

	if (Snoozed == alarmInfo.alarmState) {

		timeString = alarmInfo.nextDueTime.toString(

				mAppControllerIf.settingsUtility()->timeFormatString());

	} else {

		timeString = alarmInfo.origAlarmTime.toString(

				mAppControllerIf.settingsUtility()->timeFormatString());

	}

	QStringList stringList = timeString.split(" ");

	QString time;

	time.append(stringList[0]);

	if (stringList.count() > 1) {

		time.append("\n");

		time.append(stringList[1]);

	}

	displayStringList.append(time);

	if (Enabled == alarmInfo.alarmStatus) {

		QString remainingTime = calculateRemainingTime(alarmInfo);

		displayStringList.append(remainingTime);

	} else {

	}

	QString alarmDescription = alarmInfo.alarmDesc;

	displayStringList.append(alarmDescription);

	QString repeatTypeString;

	// The repeat type string.

	if (Daily == alarmInfo.repeatType) {

		repeatTypeString.append(hbTrId("txt_clock_main_view_dblist_daily"));

	} else if (Workday == alarmInfo.repeatType) {

		repeatTypeString.append(

		    hbTrId("txt_clock_main_view_dblist_daily_val_workdays"));

	} else if (Weekly == alarmInfo.repeatType) {

		repeatTypeString.append(hbTrId("txt_clock_main_view_setlabel_every_1"));

		repeatTypeString =

			repeatTypeString.arg(alarmInfo.alarmDateTime.toString("dddd"));

	} else {

		if (QDate::currentDate() == alarmInfo.alarmDateTime) {

			repeatTypeString.append(

			    hbTrId("txt_clock_main_view_dblist_daily_val_today"));

		} else {

			repeatTypeString.append(

					alarmInfo.alarmDateTime.toString("dddd"));

		}

	}

	displayStringList.append(repeatTypeString);

	return displayStringList;

}

/*!

	Appends an alarm to the source model.

	\param alarmInfo AlarmInfo containing the alarm.

 */

void ClockAlarmListModel::appendAlarmToModel(AlarmInfo alarmInfo)

{

	// Append only pending alarms to the model.

	if (Notified != alarmInfo.alarmState) {

		QStandardItem *item = new QStandardItem();

		QStringList displayStringList =

				getDisplayStringListforAlarmItem(alarmInfo);

		item->setData(displayStringList, Qt::DisplayRole);

		// The repeat icon.

		QList<QVariant> displayiconList;

		if (Weekly == alarmInfo.repeatType ||

				Daily == alarmInfo.repeatType ||

				Workday == alarmInfo.repeatType) {

			displayiconList.append(HbIcon("qtg_mono_repeat"));

		} else {

			displayiconList.append(QVariant());

		}

		item->setData(displayiconList, Qt::DecorationRole);

		// Set the icon for active/in-active/snoozed alarm.

		if (Disabled == alarmInfo.alarmStatus) {

			item->setData(QString("qtg_mono_alarm_inactive"), AlarmIcon);

		} else if (Snoozed == alarmInfo.alarmState) {

			// Change the alarm icon also to alarm snooze icon

			item->setData(QString("qtg_mono_alarm_snooze"), AlarmIcon);

		} else {

			item->setData(QString("qtg_mono_alarm"), AlarmIcon);

		}

		// The model for the list item will have:

		// 1. Id of the alarm that the list item represents.

		// 2. The repeat type of the alarm (Recurrence type).

		// 3. TAlarmStatus value.

		QList<QVariant> alarmData;

		alarmData.append(alarmInfo.alarmId);

		alarmData.append(alarmInfo.repeatType);

		alarmData.append(alarmInfo.alarmStatus);

		item->setData(alarmData, AlarmDetails);

		mSourceModel->appendRow(item);

	}

}

/*!

	Updates the alarm details in the source model with updated 

	details from server.

	\param item Contains the alarm to be updated.

	\param alarmInfo AlarmInfo containing the alarm.

 */

void ClockAlarmListModel::updateAlarmDetails(

		QModelIndex modelIndex, AlarmInfo alarmInfo)

{