/*

 * 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: 

 *   WPS Wizard Page: Step 3 Number enter mode.

 *

 */

// System includes

#include <HbDocumentLoader>

#include <HbWidget>

#include <HbRadiobuttonList>

#include <HbLineEdit>

#include <HbLabel>

#include <QTextStream>

#include <QTime>

#include <HbMainWindow>

#include <HbParameterLengthLimiter>

// User includes

#include "wpswizardstepthreenumber.h"

#include "wpswizard_p.h"

// Trace includes

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "wpswizardstepthreenumberTraces.h"

#endif

// External function prototypes

// Local constants

const static int KMaxPINLength = 8;

/*!

   \class WpsPageStepThreeNumber

   \brief Implementation of wps wizard page for step three PIN Entry mode. 

 */

// ======== LOCAL FUNCTIONS ========

// ======== MEMBER FUNCTIONS ========

/*!

   Constructor for WPS page three number entry mode

   @param [in] parent Pointer to the WPS wizard private implementation 

 */

WpsPageStepThreeNumber::WpsPageStepThreeNumber(WpsWizardPrivate* parent) :

    WpsWizardPage(parent), 

    mWidget(NULL), 

    mHeading(NULL),

    mLoader(NULL)

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_ENTRY, this); 

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_EXIT, this);

}

/*!

   Destructor

 */

WpsPageStepThreeNumber::~WpsPageStepThreeNumber()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_DESTRUCTOR_ENTRY, this);

    delete mLoader;

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_DESTRUCTOR_EXIT, this);

}

/*!

   Loads the page with all the widgets

   @return HbWidget* Returns the view widget

 */

HbWidget* WpsPageStepThreeNumber::initializePage()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_INITIALIZEPAGE_ENTRY, this);

    if (!mWidget) {

        bool ok;

        mLoader = new HbDocumentLoader(mWizard->mainWindow());

        mLoader->load(":/docml/occ_wps_02_03.docml", &ok);

        Q_ASSERT(ok);

        mWidget = qobject_cast<HbWidget*> (mLoader->findWidget("occ_wps_P2"));

        Q_ASSERT(mWidget);

        mHeading= qobject_cast<HbLabel*> (mLoader->findWidget("label_heading"));

        Q_ASSERT(mHeading);

    } 

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_INITIALIZEPAGE_EXIT, this);

    return mWidget;

}

/*!

   Funtion to determine the next page to be displayed in the wizard process

   @param [out] removeFromStack bool indicating whether the current page should be 

   removed from the stack

   @return int Page Id of the next page to be displayed.

 */

int WpsPageStepThreeNumber::nextId(bool &removeFromStack) const

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_NEXTID_ENTRY, this);

    removeFromStack = false;

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_NEXTID_EXIT, this);

    return WpsWizardPage::PageWpsWizardStep4;

}

/*!

   Determines the Number of steps to move backwards when 'Prev' Button

   is clicked

   @return int Number of pages to move backwards

 */

int WpsPageStepThreeNumber::previousTriggered()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_PREVIOUSTRIGGERED_ENTRY, this);

    mWizard->setPin(0);

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_PREVIOUSTRIGGERED_EXIT, this);

    return (PageWpsWizardStep3_Number - PageWpsWizardStep2) - 1;

}

/*!

   CallBack when the cancel button is clicked

 */

void WpsPageStepThreeNumber::cancelTriggered()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_CANCELTRIGGERED_ENTRY, this);

    mWizard->setPin(0);    

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_CANCELTRIGGERED_EXIT, this);

}

/*!

   Determines whether the Next action button should be enabled or not

   @return bool Indicating whether next button is enabled or not.

 */

bool WpsPageStepThreeNumber::showPage()

{

    int randomNumber = computeRandNumber();

    mHeading->setPlainText(

        HbParameterLengthLimiter(

            "txt_occ_dialog_enter_1_on_the_wireless_station_t").arg(

                QString::number(randomNumber)));

    mWizard->setPin(randomNumber);

    return true;

}

/*!

   Computes the Random number based on current system time

   @return int Returns the generated random number

 */

int WpsPageStepThreeNumber::computeRandNumber()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_COMPUTERANDNUMBER_ENTRY, this);

    int pin = 0;

    QTime time(0, 0);

    int seed = time.secsTo(QTime::currentTime());

    do {

        qsrand(seed);

        pin = qrand();

    } while (pin < (10 ^ (KMaxPINLength - 2)) || (((pin / 1000000) % 10)) == 0);

    //last digit is checksum, so we need 7 digits

    //and the first shouldn't be 0

    pin = pin % 10000000;

    int checkSum = computeCheckSum(pin);

    pin *= 10;

    pin += checkSum;

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_COMPUTERANDNUMBER_EXIT, this);

    return pin;

}

/*!

   Computes the checksum for a given pin

   @return Returns the generated checksum

 */

int WpsPageStepThreeNumber::computeCheckSum(int aPin)

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_COMPUTECHECKSUM_ENTRY, this);

    int accum = 0;

    aPin *= 10;

    accum += 3 * ((aPin / 10000000) % 10);

    accum += 1 * ((aPin / 1000000) % 10);

    accum += 3 * ((aPin / 100000) % 10);

    accum += 1 * ((aPin / 10000) % 10);

    accum += 3 * ((aPin / 1000) % 10);

    accum += 1 * ((aPin / 100) % 10);

    accum += 3 * ((aPin / 10) % 10);

    int digit = (accum % 10);

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_COMPUTECHECKSUM_EXIT, this);

    return (10 - digit) % 10;

}