/*

 * 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 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: 

 *   WPS Wizard Page: Step 3 Number enter mode.

 *

 */

// System includes

#include <hbdocumentloader.h>

#include <hbwidget.h>

#include <hbradiobuttonlist.h>

#include <hblineedit.h>

#include <hblabel.h>

#include <QTextStream>

#include <QTime>

// User includes

#include "wpswizardstepthreenumber.h"

#include "wpswizard_p.h"

// Trace includes

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "wpspagestepthreenumberTraces.h"

#endif

// Local constants

#define KMaxPINLength 8

/*!

 * Constructor for WPS page three number entry mode

 * 

 * \param WpsWizardPrivate* Pointer to the WPS wizard private implementation 

 */

WpsPageStepThreeNumber::WpsPageStepThreeNumber(WpsWizardPrivate* parent) :

    WpsWizardPage(parent), mWidget(NULL), mRadio(NULL), mValid(true)

{

OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_ENTRY, this)

OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_EXIT, this)

}

/*!

 * Destructor

 */

WpsPageStepThreeNumber::~WpsPageStepThreeNumber()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_ENTRY, this)

    delete mWidget;

OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_WPSPAGESTEPTHREENUMBER_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;

        HbDocumentLoader loader;

        loader.load(":/docml/occ_wps_P3.docml", &ok);

        Q_ASSERT_X(ok, "WPS Wizard", "Invalid docml file");

        mWidget = qobject_cast<HbWidget*> (loader.findWidget("occ_wps_P3"));

        Q_ASSERT_X(mWidget != 0, "WPS Wizard", "View not found");

        mHeading = qobject_cast<HbLabel*> (loader.findWidget("label_heading"));

        Q_ASSERT_X(mHeading != 0, "WPS wizard", "Header not found");

        int randomNumber = computeRandNumber();

        mHeading->setPlainText(hbTrId("txt_occ_dialog_enter_1_on_the_wireless_station_t").arg(

            randomNumber));

        mWizard->setPin(randomNumber);

        mWizard->enableNextButton(true);

    }

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_INITIALIZEPAGE_EXIT, this)

    return mWidget;

}

/*!

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

  * 

  * \param bool& RemoveFromStack 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)

    int id = WlanWizardPage::PageNone;

    removeFromStack = false;

    id = WpsWizardPage::PageWpsWizardStep4;

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_NEXTID_EXIT, this)

    return id;

}

/*!

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

 * is clicked

 * 

 * \return int Number of pages to move backwards

*/

int WpsPageStepThreeNumber::stepsBackwards()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_STEPSBACKWARDS_ENTRY, this)

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_STEPBACKWARDS_EXIT, this)

    return (PageWpsWizardStep3_Number - PageWpsWizardStep2) - 1;

}

/*!

  * Callback when the previous button is clicked

 */

void WpsPageStepThreeNumber::previousTriggered()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_PREVIOUSTRIGGERED_ENTRY, this)

    mWizard->setPin(0);

OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_PREVIOUSTRIGGERED_EXIT, this)

}

/*!

 * CallBack when the cancel button is clicked

*/

void WpsPageStepThreeNumber::cancelTriggered()

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_CANCELTRIGGERED_ENTRY, this)

    mWizard->setPin(0);

OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_CANCELTRIGGERED_EXIT, this)

}

/*!

 * Validates the content of the pages

 * 

 * \return bool Indicating the result of the operation

*/

bool WpsPageStepThreeNumber::validate() const

{

    OstTraceFunctionEntry1(WPSPAGESTEPTHREENUMBER_VALIDATE_ENTRY, this)

    OstTraceFunctionExit1(WPSPAGESTEPTHREENUMBER_VALIDATE_EXIT, this)

    return mValid;

}

/*!

 * 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;

    TInt 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;

}