/*

* 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:  

*

*/

// System includes

#include <internetconnectivitycrkeys.h>

#include <cmmanager.h>

// User includes

#include "wlansettings.h"

#include "wlansettings_s60_p.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "wlansettings_s60Traces.h"

#endif

/*!

    \class CWlanSettingsPrivate

    \brief CWlanSettingsPrivate is the actual implementation for 

    reading/writing WLAN Settings from/to database.

*/

// External function prototypes

// Local constants

/**  Seconds per minute. */

static const TInt KWlanSettingsSecondsInMinute = 60;

/**  Default "Scan Networks" setting. */

static const TUint KWlanSettingsDefaultScanNetwork =

    WlanSettings::ScanNetworkAuto;

/**  Default "Power saving" setting. */

static const TBool KWlanSettingsDefaultPowerSaving = ETrue;

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

/*!

    Static NewL function for creating CWlanSettingsPrivate object.

    \return Pointer to CWlanSettingsPrivate object.

*/

CWlanSettingsPrivate* CWlanSettingsPrivate::NewL(WlanSettings *q_ptr)

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_NEWL_ENTRY);

    CWlanSettingsPrivate* impl = new ( ELeave ) CWlanSettingsPrivate(q_ptr);

    CleanupStack::PushL( impl );

    impl->ConstructL();

    CleanupStack::Pop( impl ); 

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_NEWL_EXIT);

    return impl;

}

/*!

    Second phase Constructor.

*/

void CWlanSettingsPrivate::ConstructL()

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_CONSTRUCTL_ENTRY);

    mSession = CMDBSession::NewL( KCDLatestVersion );

#ifndef __WINS__

    mWlanMgmtClient = CWlanMgmtClient::NewL();

#endif

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_CONSTRUCTL_EXIT);

}

/*!

    Constructor.

*/

CWlanSettingsPrivate::CWlanSettingsPrivate(WlanSettings *q_ptr) :

    q_ptr(q_ptr),

    mPowerSaving(KWlanSettingsDefaultPowerSaving),

    mScanInterval(KWlanSettingsDefaultScanNetwork)

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_ENTRY);

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_EXIT);

}

/*!

    Destructor.

*/

CWlanSettingsPrivate::~CWlanSettingsPrivate()

{

    OstTraceFunctionEntry0(DUP1_CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_ENTRY);

    delete mSession;

#ifndef __WINS__

    delete mWlanMgmtClient;

#endif

    OstTraceFunctionExit0(DUP1_CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_EXIT);

}

/*!

    Function to load the WLAN Settings from CommsDB.

*/

void CWlanSettingsPrivate::LoadDBSettingsL()

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_LOADDBSETTINGSL_ENTRY);

    TBool ownTransaction( EFalse );

    if ( !mSession->IsInTransaction() ) {

        ownTransaction = ETrue;

        mSession->OpenTransactionL();

    }

    TMDBElementId tableId = 0;

    tableId = CCDWlanDeviceSettingsRecord::TableIdL( *mSession );

    CCDWlanDeviceSettingsRecord* record = new( ELeave )

            CCDWlanDeviceSettingsRecord( tableId );         

    CleanupStack::PushL( record );

    record->iWlanDeviceSettingsType = KWlanUserSettings; 

    if ( record->FindL( *mSession ) ) {

        record->LoadL( *mSession );

    }

    // Read scan interval

    OstTrace1(

        TRACE_NORMAL,

        CWLANSETTINGSPRIVATE_LOADDBSETTINGSL_SCANINTERVAL,

        "CWlanSettingsPrivate::LoadDBSettingsL ScanInterval;iBgScanInterval=%u",

        record->iBgScanInterval );

    OstTrace1(

        TRACE_NORMAL,

        CWLANSETTINGSPRIVATE_LOADDBSETTINGSL_SAVEDSCANINTERVAL,

        "CWlanSettingsPrivate::LoadDBSettingsL SavedScanInterval;iSavedBgScanInterval=%u",

        record->iSavedBgScanInterval );

    mScanInterval = record->iSavedBgScanInterval;

    //Safe check for scan interval, control should not come here.

    if (mScanInterval > (WlanSettings::ScanNetworkMax

            * KWlanSettingsSecondsInMinute)) {

        mScanInterval = WlanSettings::ScanNetworkAuto;

    }

    // Read power saving mode

    mPowerSaving = record->iWlanPowerMode;

    OstTraceExt1(

        TRACE_NORMAL,

        CWLANSETTINGSPRIVATE_LOADDBSETTINGSL_POWERSAVE,

        "CWlanSettingsPrivate::LoadDBSettingsL PowerSave;mPowerSaving=%hhu",

        mPowerSaving );

    CleanupStack::PopAndDestroy( record ); 

    if ( ownTransaction ) {

        mSession->CommitTransactionL();

          // Rollback operation.

    }

    //To Load CM Settings.

    LoadJoinWlanSettingL();

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_LOADDBSETTINGSL_EXIT);

}

/*!

    Function to load the Join WLAN networks Setting from CMManager.

*/

void CWlanSettingsPrivate::LoadJoinWlanSettingL()

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_LOADJOINWLANSETTINGL_ENTRY);

    RCmManager CmManager;

    CmManager.CreateTablesAndOpenL();

    CleanupClosePushL(CmManager); 

    CmManager.ReadGenConnSettingsL( mCmSettings );

    CleanupStack::PopAndDestroy( 1 );     //CmManager

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_LOADJOINWLANSETTINGL_EXIT);

}

/*!

    Function to write the Join WLAN networks Setting using CMManager.

*/

void CWlanSettingsPrivate::SaveJoinWlanSettingL(TInt mode)

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_SAVEJOINWLANSETTINGL_ENTRY);

    switch ( mode ) {        

        case EJoinWlanKnown:

            mCmSettings.iUsageOfWlan = ECmUsageOfWlanKnown;

            break;

        case EJoinWlanManual:

            mCmSettings.iUsageOfWlan = ECmUsageOfWlanManual;

            break;

        default:

            break;

    }

    RCmManager CmManager;

    CmManager.CreateTablesAndOpenL();

    CleanupClosePushL(CmManager); 

    CmManager.WriteGenConnSettingsL( mCmSettings );

    CleanupStack::PopAndDestroy( 1 );

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_SAVEJOINWLANSETTINGL_EXIT);

}

/*!

    Function to get the Join WLAN network setting.

    \return 0 for Known, 1 for Manual.

*/

TInt CWlanSettingsPrivate::JoinWlanMode()

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_JOINWLANMODE_ENTRY);

    TInt mode = 0;

    switch ( mCmSettings.iUsageOfWlan ) {

        case ECmUsageOfWlanKnown: 

            mode = EJoinWlanKnown;

            break;

        case ECmUsageOfWlanManual:

            mode = EJoinWlanManual;

            break;

        default:

            break;

    }

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_JOINWLANMODE_EXIT);

    return mode;

}

/*!

    Function to write the WLAN Settings to CommsDb.

*/

void CWlanSettingsPrivate::SaveDBSettingsL(TInt option)

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_SAVEDBSETTINGSL_ENTRY);

    TBool ownTransaction( EFalse );

    if ( !mSession->IsInTransaction() ) {

        ownTransaction = ETrue;

        mSession->OpenTransactionL();

    }

    TMDBElementId tableId = 0;

    tableId = CCDWlanDeviceSettingsRecord::TableIdL( *mSession );

    CCDWlanDeviceSettingsRecord* record = new( ELeave )

            CCDWlanDeviceSettingsRecord( tableId );         

    CleanupStack::PushL( record );

    record->iWlanDeviceSettingsType = KWlanUserSettings; 

    if ( record->FindL( *mSession ) ) {

        record->LoadL( *mSession );

    }

    switch (option) {

        case EWlanScanInterval:

            record->iBgScanInterval = mScanInterval;

            if (!q_ptr->isDevicePowerSavingEnabled()) {

                record->iSavedBgScanInterval = mScanInterval;

            }

            OstTrace1(

                TRACE_NORMAL,

                CWLANSETTINGSPRIVATE_SAVEDBSETTINGSL_SCANINTERVAL,

                "CWlanSettingsPrivate::SaveDBSettingsL ScanInterval;iBgScanInterval=%u",

                record->iBgScanInterval );

            OstTrace1(

                TRACE_NORMAL,

                CWLANSETTINGSPRIVATE_SAVEDBSETTINGSL_SAVEDSCANINTERVAL,

                "CWlanSettingsPrivate::SaveDBSettingsL SavedScanInterval;iSavedBgScanInterval=%u",

                record->iSavedBgScanInterval );

            break;

        case EWlanPowerSaving:

            OstTraceExt1(

                TRACE_NORMAL,

                CWLANSETTINGSPRIVATE_SAVEDBSETTINGSL_POWERSAVING,

                "CWlanSettingsPrivate::SaveDBSettingsL PowerSaving;mPowerSaving=%hhu",

                mPowerSaving );

            record->iWlanPowerMode = mPowerSaving;

            break;

        default:

            break;

    }

    // Whenever settings are modified, iUseDefaultSettings must be set to false.

    record->iUseDefaultSettings = EFalse;

    record->ModifyL( *mSession );

    CleanupStack::PopAndDestroy( record );        

    if ( ownTransaction ) {

        mSession->CommitTransactionL();

    }

#ifndef __WINS__

    // Notifying WLAN Engine about changes in settings

    mWlanMgmtClient->NotifyChangedSettings();

#endif

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_SAVEDBSETTINGSL_EXIT);

}

/*!

    Function to get the scan interval.

    \return Scan interval  in minutes.

*/

TUint CWlanSettingsPrivate::ScanInterval()

{

    TUint retVal;

    if ( mScanInterval == WlanSettings::ScanNetworkAuto ) {

        retVal = mScanInterval;   

    } else {

        // Return scan time in minutes

        retVal = mScanInterval / KWlanSettingsSecondsInMinute;

    }

    OstTrace1(

        TRACE_NORMAL,

        CWLANSETTINGSPRIVATE_SCANINTERVAL,

        "CWlanSettingsPrivate::ScanInterval;retVal=%u",

        retVal );

    return retVal;

}

/*!

    Function to get Power Saving Option.

    \return True if Power Saving option is enabled, otherwise False.

*/

TBool CWlanSettingsPrivate::PowerSaving()

{

    OstTraceExt1(

        TRACE_NORMAL,

        CWLANSETTINGSPRIVATE_POWERSAVING,

        "CWlanSettingsPrivate::PowerSaving;mPowerSaving=%hhx",

        mPowerSaving );

    return mPowerSaving;

}

/*!

    Function to set Scan interval.

    \param interval Scan interval in minutes. 

*/

void CWlanSettingsPrivate::SetScanInterval(TUint interval)

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_SETSCANINTERVAL_ENTRY);

    if ( interval == WlanSettings::ScanNetworkAuto ) {

        mScanInterval = interval;

    }

    else {

        // Scan time stored in seconds

        mScanInterval = interval * KWlanSettingsSecondsInMinute;

    }

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_SETSCANINTERVAL_EXIT);

}

/*!

    Function to set Power Saving Option.

    \param powerSavingOption True to enable or false to disable power saving option. 

*/

void CWlanSettingsPrivate::SetPowerSaving(TBool powerSavingOption)

{

    OstTraceFunctionEntry0(CWLANSETINGPRIVATE_SETPOWERSAVING_ENTRY);

    mPowerSaving = powerSavingOption;

    OstTraceFunctionExit0(CWLANSETINGPRIVATE_SETPOWERSAVING_EXIT);

}