/*

* Copyright (c) 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 of CalenEditorReminderField class.

*

*/

// System Includes

#include <QDate>

#include <hbdataformmodelitem.h>

#include <hbdataformmodel.h>

#include <hbdataform.h>

#include <hbdatetimepicker.h>

#include <hbextendedlocale.h>

#include <hbi18ndef.h>

#include <hbdialog.h>

#include <hblabel.h>

#include <hbaction.h>

// User Includes

#include "calenagendautils.h"

#include "caleneditorreminderfield.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "caleneditorreminderfieldTraces.h"

#endif

#define numberOfMinutesInADay 1440

/*!

	\class CalenEditorReminderField

 */

/*!

	Constructor.

	\param parent QObject pointer

 */

CalenEditorReminderField::CalenEditorReminderField(

										CalenEditorPrivate* calenEditor,

										HbDataForm* form, 

										HbDataFormModel* model,

										QObject *parent)

	:QObject(parent),

	 mCalenEditor(calenEditor), 

	 mEditorForm(form), 

	 mCalenEditorModel(model),

	 mCustomReminderTimeItem(0),

	 mReminderTimeAdded(false)

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_CALENEDITORREMINDERFIELD_ENTRY );

	mReminderItem = new HbDataFormModelItem();

	mReminderItem->setType(HbDataFormModelItem::ComboBoxItem);

	mReminderItem->setData(HbDataFormModelItem::LabelRole,

						   hbTrId("txt_calendar_setlabel_reminder"));	

	// Add it to the model

	mCalenEditorModel->appendDataFormItem(mReminderItem,

										mCalenEditorModel->invisibleRootItem());

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_CALENEDITORREMINDERFIELD_EXIT );

}

/*!

	 Destructor

 */

CalenEditorReminderField::~CalenEditorReminderField()

{

	OstTraceFunctionEntry0( DUP1_CALENEDITORREMINDERFIELD_CALENEDITORREMINDERFIELD_ENTRY );

	if(mReminderHash.count()) {

		mReminderHash.clear();

	}

	OstTraceFunctionExit0( DUP1_CALENEDITORREMINDERFIELD_CALENEDITORREMINDERFIELD_EXIT );

}

/*!

	 Set the reminder choices.

 */

void CalenEditorReminderField::setReminderChoices()

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_SETREMINDERCHOICES_ENTRY );

	// Disconnect the slot and connect it back again at end to avoid unnecessary

	// calls to handleReminderIndexChanged slot. Or else the slot gets called 

	// when we add all of items to the repeat combobox.

	mEditorForm->removeConnection(mReminderItem,

							SIGNAL(currentIndexChanged(int)), this,

							SLOT(handleReminderIndexChanged(int)));

	// Create the reminder choices

	QStringList reminderChoices;

	reminderChoices << hbTrId("txt_calendar_setlabel_reminder_val_off")

				<< hbTrId("txt_calendar_setlabel_reminder_val_at_the_start")

				<< hbTrId("txt_calendar_setlabel_reminder_val_15_minutes_befo")

				<< hbTrId("txt_calendar_setlabel_reminder_val_30_minutes_befo")

				<< hbTrId("txt_calendar_setlabel_reminder_val_1_hour_before");

	mReminderItem->setContentWidgetData("items", reminderChoices);

	mReminderItem->setEnabled(true);

	mEditorForm->addConnection(mReminderItem,

							SIGNAL(currentIndexChanged(int)), this,

							SLOT(handleReminderIndexChanged(int)));

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_SETREMINDERCHOICES_EXIT );

}

/*!

	 Adds reminder item to the model

 */

void CalenEditorReminderField::addItemToModel()

{	

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_ADDITEMTOMODEL_ENTRY );

	// Add reminder to the model

	mCalenEditorModel->appendDataFormItem( mReminderItem,

				   mCalenEditorModel->invisibleRootItem());

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_ADDITEMTOMODEL_EXIT );

}

/*!

	 Removes reminder item from the model

 */

void CalenEditorReminderField::removeItemFromModel()

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_REMOVEITEMFROMMODEL_ENTRY );

	mCalenEditorModel->removeItem(modelIndex());

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_REMOVEITEMFROMMODEL_EXIT );

}

/*!

	 Set the current reminder index with the value which was saved 

	 before, if it is valid or else default the value to 15MinsBefore

	 or AtTheStart whichever is appropriate

 */

void CalenEditorReminderField::setSavedMeetingReminderIndex()

{

	// Get the reminder offset value.

	int reminderOffset =

	mCalenEditor->editedEntry()->alarm().timeOffset();

	// Get the index value for the reminder combo box from the hash 

	// table. 2nd argument is defaultKey if the hash contains no item mapped to value

	//TODO: Need to confirm the default reminder to set if none of the choices are met like in case of synch from outlook.

	int index = mReminderHash.key(reminderOffset, Reminder15MinsBefore); 

	if (index < reminderItemsCount())

		setCurrentIndex(index);

	else if (reminderItemsCount() == (ReminderAtStart + 1)) //+1 because enum starts from 0.

		setCurrentIndex(ReminderAtStart); 

	else

		setCurrentIndex(Reminder15MinsBefore);

}

/*!

	 Populates reminder item with available choices to the user

	 \param newEntry bool value to indicate if its a new entry

 */

void CalenEditorReminderField::populateReminderItem(bool newEntry)

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_POPULATEREMINDERITEM_ENTRY );

	AgendaAlarm reminder;

	bool pastEvent =  false;

	bool repeatingEntry = false;

	bool sameDay = false;

	mReminderItem->setContentWidgetData("objectName", "remainderItem");

	// Build the hash map for the reminder.

	mReminderHash[ReminderOff] = -1; // OFF.

	mReminderHash[ReminderAtStart] = 0;

	mReminderHash[Reminder15MinsBefore] = 15;

	mReminderHash[Reminder30MinsBefore] = 30;

	mReminderHash[Reminder1HourBefore] = 60;

	// Set reference date to start date or repeat until date accordingly to 

	// decide whether its a past event or not.

	QDate referenceDate;

	if (!mCalenEditor->editedEntry()->isRepeating() || 

					(mCalenEditor->isEditRangeThisOnly())) {

		referenceDate = mCalenEditor->editedEntry()->startTime().date();

	} else {

		referenceDate = mCalenEditor->editedEntry()->repeatRule().until().date();

		repeatingEntry = true;

	}

	if ((referenceDate < QDate::currentDate()) || 

					(referenceDate == QDate::currentDate()

					&& (mCalenEditor->editedEntry()->startTime().time() < 

					QTime::currentTime()))) {

		pastEvent = true;

	}

	if (mCalenEditor->isAllDayEvent()) {

		updateReminderChoicesForAllDay(referenceDate);

	} else {

		if((referenceDate == QDate::currentDate())

					&& !pastEvent) {

			UpdateReminderChoicesForSameDay(mCalenEditor->editedEntry()->startTime().time());

			sameDay = true;

		}

		else {

		setReminderChoices();

		}

	}

	// Set the default reminder value to 15 minutes 

	if (newEntry) {

		if (!pastEvent) {

			int defaultIndex = Reminder15MinsBefore;

			if (reminderItemsCount() == (ReminderAtStart + 1))  //If 15MinsBefore option is not available

				defaultIndex = ReminderAtStart;

			setCurrentIndex(defaultIndex);

			// Save the reminder alarm for the entry

			reminder.setTimeOffset(mReminderHash.value(defaultIndex));

			reminder.setAlarmSoundName(QString(" "));

			// Set the reminder to the entry as well as original entry.

			mCalenEditor->editedEntry()->setAlarm(reminder);

			mCalenEditor->originalEntry()->setAlarm(reminder);

		} else {

			setReminderOff();

		}

	} else {

        int offsetInMins = mCalenEditor->editedEntry()->alarm().timeOffset();

		// If the alarm is not null,

		// Check if all day event or not and then set the choices accordingly.

		if (mCalenEditor->editedEntry()->alarm().isNull()) {

			// Alarm is set off

			setCurrentIndex(ReminderOff);

			if(mReminderTimeAdded) {

				removeReminderTimeField();

			}

		} else if (!mCalenEditor->isAllDayEvent()) {

			QTime currentTime = QTime::currentTime();

			//TODO: Still need confirmation for proper behaviour when entry is edited after alarm has expired.

			if (!repeatingEntry && sameDay && (currentTime.addSecs(offsetInMins * 60) >= mCalenEditor->editedEntry()->startTime().time())) {

				setCurrentIndex(ReminderOff); //Alarm has expired already, so making it off.

				//The slot for index 0 is not called, since after UpdateReminderChoicesForSameDay()

				//index is 0 itself and there is no change. So explicitly calling it here.

				handleReminderIndexChanged(0); 

			}

			else {

				setSavedMeetingReminderIndex();

			}

		} else {

			// Insert reminder time field and display entry's reminder time.

			// If past then disable the field.

			if (!mReminderTimeAdded) {

				insertReminderTimeField();

			}

			if (pastEvent && mReminderTimeAdded) {

				mCustomReminderTimeItem->setEnabled(false);

			}

			// Get the appropriate reminder index depending on the value of time offset.

			int index = getReminderIndexBasedOnEntryAlarm();

			mReminderItem->setContentWidgetData("currentIndex", index);

			setDisplayTime();

		}

		if (pastEvent) {

			mReminderItem->setEnabled(false);

		}

	}

	mEditorForm->addConnection(mReminderItem,

							SIGNAL(currentIndexChanged(int)), this,

							SLOT(handleReminderIndexChanged(int)));

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_POPULATEREMINDERITEM_EXIT );

}

/*!

	Triggered from tapping on reminder item.

	Handles the reminder time change and updates the same in the event.

	\param index The new index chosen in the reminder list.

 */

void CalenEditorReminderField::handleReminderIndexChanged(int index)

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_HANDLEREMINDERINDEXCHANGED_ENTRY );

	AgendaAlarm reminder;

	if (!mCalenEditor->editedEntry()->alarm().isNull()) {

		reminder = mCalenEditor->editedEntry()->alarm();

	}

	// Check whether all day event or not and store appropriately.

	if (!mCalenEditor->isAllDayEvent()) {

		// If value for the index in hash table is -1 i.e reminder is "OFF",

		// then set the default constructed reminder to

		// the entry which is Null.

		if (mReminderHash.value(index) < 0) {

			// Construct the default alarm which is NULL

			reminder = AgendaAlarm();

		} else {

			// If not zero then set the reminder offset

			// value to the entry.

			reminder.setTimeOffset(mReminderHash.value(index));

			reminder.setAlarmSoundName(QString(" "));

		}

	} else {

		QDateTime reminderDateTimeForAllDay;

		QDateTime

		        startDateTimeForAllDay(

		                               mCalenEditor->editedEntry()->startTime().date(),

		                               QTime(0, 0, 0));

		if (mReminderItem->contentWidgetData("currentIndex") == ReminderOff) {

			reminder = AgendaAlarm();

			removeReminderTimeField();

		} else {

			int offset = 0;

			if (mReminderItem->contentWidgetData("currentIndex") == ReminderOneDayBefore) {

				offset = 1;

			} else if (mReminderItem->contentWidgetData("currentIndex") == ReminderTwoDaysBefore) {

				offset = 2;

			}

			if(!mReminderTimeAdded) {

				insertReminderTimeField();

			}

			// If on same day as that of the event then check if time has been 

			// changed , if changed retain that else set default time.

			if (offset == 0) {

				if(mReminderTimeForAllDay == QTime(18, 0, 0, 0)) {

					mReminderTimeForAllDay.setHMS(8, 0, 0);

				}

			}else {

				// For the reminder options other than ReminderOnEventDay

				// reset the default values since the time set for one option 

				// may not be valid for the other option

				mReminderTimeForAllDay.setHMS(18, 0, 0, 0);

			}

			setDisplayTime();

			reminderDateTimeForAllDay.setDate(

					mCalenEditor->editedEntry()->startTime().date().addDays(

																	-offset));

			reminderDateTimeForAllDay.setTime(mReminderTimeForAllDay);

			int seconds =

					reminderDateTimeForAllDay.secsTo(startDateTimeForAllDay);

			int timeOffset = seconds / 60;

			mCustomReminderTimeItem->setEnabled(true);

			reminder.setTimeOffset(timeOffset);

			reminder.setAlarmSoundName(QString(" "));

		}

	}

	// Set the reminder to the entry.

	mCalenEditor->editedEntry()->setAlarm(reminder);

	if(!mCalenEditor->isNewEntry()) {

	mCalenEditor->addDiscardAction();

	}

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_HANDLEREMINDERINDEXCHANGED_EXIT );

}

/*!

	 Returns the mode index of the reminder item

	 \return Mode index of the reminder item

 */

QModelIndex CalenEditorReminderField::modelIndex()

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_MODELINDEX_ENTRY );

	return mCalenEditorModel->indexFromItem(mReminderItem);

}

/*!

	 Set reminder off.

 */

void CalenEditorReminderField::setReminderOff()

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_SETREMINDEROFF_ENTRY );

	// Create the remindar choices

	QStringList reminderChoices;

	reminderChoices << hbTrId("txt_calendar_setlabel_reminder_val_off");

	mReminderItem->setContentWidgetData(QString("items"), reminderChoices);

	mReminderItem->setEnabled(false); 

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_SETREMINDEROFF_EXIT );

}

/*!

	 Set the default alarm for a new all day event.

 */

void CalenEditorReminderField::setDefaultAlarmForAllDay()

{	

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_SETDEFAULTALARMFORALLDAY_ENTRY );

	// Set default alarm if its a new entry.

	if (mCalenEditor->isNewEntry()) {

		AgendaAlarm reminder;

		QDate defaultDate

				(mCalenEditor->editedEntry()->startTime().date().addDays(-1));

		// Set default time as 6pm of the previous day.

		mReminderTimeForAllDay.setHMS(18, 0, 0, 0);

		setDisplayTime();

		QDateTime startDateTimeForAllDay(

				mCalenEditor->editedEntry()->startTime().date(), QTime(0, 0));

		QDateTime defaultReminderDateTimeForAllDay

				(defaultDate, mReminderTimeForAllDay);

		int offsetInSecs = 

				defaultReminderDateTimeForAllDay.secsTo(startDateTimeForAllDay);

		int offsetInMins = offsetInSecs/60;

		reminder.setTimeOffset(offsetInMins);

		reminder.setAlarmSoundName(QString(" "));

		// Set the reminder to the entry as well as original entry.

		mCalenEditor->editedEntry()->setAlarm(reminder);

		mCalenEditor->originalEntry()->setAlarm(reminder);

	}

	OstTraceFunctionExit0( CALENEDITORREMINDERFIELD_SETDEFAULTALARMFORALLDAY_EXIT );

}

/*!

	 Update the reminder choices when the meeting is on same day, 

	 based on the time available from current time to start time of the event.

 */

void CalenEditorReminderField::UpdateReminderChoicesForSameDay(QTime startTime)

{

	QTime currentTime = QTime::currentTime();

	int offset = currentTime.secsTo(startTime);

	// Disconnect the slot and connect it back again at end to avoid unnecessary

	// calls to handleReminderIndexChanged slot. Or else the slot gets called 

	// when we add all of items to the repeat combobox.

	mEditorForm->removeConnection(mReminderItem,

							SIGNAL(currentIndexChanged(int)), this,

							SLOT(handleReminderIndexChanged(int)));

	//The event start time is within 15mins from current time of today,

	//then we cannot have alarms "15 mins before", "30mins before" and "1 hour before"

	if (offset <= SecsIn15Mins)

	{

		QStringList reminderChoices;

		//First to clear all items, we just set items with empty list.

		mReminderItem->setContentWidgetData("items", reminderChoices); 

		reminderChoices << hbTrId("txt_calendar_setlabel_reminder_val_off")

				<< hbTrId("txt_calendar_setlabel_reminder_val_at_the_start");

		mReminderItem->setContentWidgetData("items", reminderChoices);

	}

	//The event start time is within half and hour from current time of today

	//then we cannot have alarms "30mins before" and "1 hour before"

	else if (offset <= SecsIn30Mins)

	{

		QStringList reminderChoices;

		//First to clear all items, we just set items with empty list.

		mReminderItem->setContentWidgetData("items", reminderChoices);

		reminderChoices << hbTrId("txt_calendar_setlabel_reminder_val_off")

				<< hbTrId("txt_calendar_setlabel_reminder_val_at_the_start")

				<< hbTrId("txt_calendar_setlabel_reminder_val_15_minutes_befo");

		mReminderItem->setContentWidgetData("items", reminderChoices);

	}

	//The event start time is within an hour of the current time of today,

	//then cannot have alarm "1 hour before".

	else if (offset <= SecsInOneHour)

	{

		QStringList reminderChoices;

		//First to clear all items, we just set items with empty list.

		mReminderItem->setContentWidgetData("items", reminderChoices);

		reminderChoices << hbTrId("txt_calendar_setlabel_reminder_val_off")

				<< hbTrId("txt_calendar_setlabel_reminder_val_at_the_start")

				<< hbTrId("txt_calendar_setlabel_reminder_val_15_minutes_befo")

				<< hbTrId("txt_calendar_setlabel_reminder_val_30_minutes_befo");

		mReminderItem->setContentWidgetData("items", reminderChoices);

	}

	// The event start time is more than one hour from current time 

	// then we can have all choices for alarm.

	else

	{

		QStringList reminderChoices;

		//First to clear all items, we just set items with empty list.

		mReminderItem->setContentWidgetData("items", reminderChoices);

		reminderChoices << hbTrId("txt_calendar_setlabel_reminder_val_off")

				<< hbTrId("txt_calendar_setlabel_reminder_val_at_the_start")

				<< hbTrId("txt_calendar_setlabel_reminder_val_15_minutes_befo")

				<< hbTrId("txt_calendar_setlabel_reminder_val_30_minutes_befo")

				<< hbTrId("txt_calendar_setlabel_reminder_val_1_hour_before");

		mReminderItem->setContentWidgetData("items", reminderChoices);

	}

	mReminderItem->setEnabled(true);

	mEditorForm->addConnection(mReminderItem,

							SIGNAL(currentIndexChanged(int)), this,

							SLOT(handleReminderIndexChanged(int)));

}

/*!

	 Updates the reminder choices for an all day event.

	 \param referenceDate to indicate past or not.

 */

void CalenEditorReminderField::updateReminderChoicesForAllDay(QDate referenceDate)

{

	OstTraceFunctionEntry0( CALENEDITORREMINDERFIELD_UPDATEREMINDERCHOICESFORALLDAY_ENTRY );

	if (!mReminderTimeAdded){

		insertReminderTimeField();

	}

	// This functions rearranges the reminder options based on the date and time