/*

* 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 <psmtypes.h>

#include <cmmanager.h>

// User includes

#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. */

const TInt KWlanSettingsSecondsInMinute = 60;

/**  Maximum value for scan interval in minutes. */

const TInt KWlanSettingsScanNetworkMax = 30;

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

/*!

    Static NewL function for creating CWlanSettingsPrivate object.

    \return Pointer to CWlanSettingsPrivate object.

*/

CWlanSettingsPrivate* CWlanSettingsPrivate::NewL(int psmKeyValue)

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_NEWL_ENTRY, this);

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

    CleanupStack::PushL( impl );

    impl->ConstructL();

    CleanupStack::Pop( impl ); 

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_NEWL_EXIT, this);

    return impl;    

}

/*!

    Second phase Constructor.

*/

void CWlanSettingsPrivate::ConstructL()

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_CONSTRUCTL_ENTRY, this);

    mSession = CMDBSession::NewL( KCDLatestVersion );

#ifndef __WINS__

    mWlanMgmtClient = CWlanMgmtClient::NewL();

#endif

    CheckPsmModeL();

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_CONSTRUCTL_EXIT, this);

}

/*!

    Constructor.

*/

CWlanSettingsPrivate::CWlanSettingsPrivate(int psmKeyValue) :

    mPsmMode( EFalse ),

    mPowerSaving(KWlanSettingsDefaultPowerSaving),

    mScanInterval(KWlanSettingsDefaultScanNetwork),

    mPsmKeyMode(psmKeyValue)

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_ENTRY, this);

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_EXIT, this);

}

/*!

    Destructor.

*/

CWlanSettingsPrivate::~CWlanSettingsPrivate()

{

    OstTraceFunctionEntry1(DUP1_CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_ENTRY, this);

    delete mSession;

#ifndef __WINS__

    delete mWlanMgmtClient;

#endif

    OstTraceFunctionExit1(DUP1_CWLANSETINGPRIVATE_CWLANSETINGPRIVATE_EXIT, this);

}

/*!

    Function to get the Power Saving mode of the device.

*/

void CWlanSettingsPrivate::CheckPsmModeL()

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_CHECKPSMMODEL_ENTRY, this);

    TPsmsrvMode mode( EPsmsrvModeNormal );

    mode = static_cast<TPsmsrvMode>( mPsmKeyMode );

    if ( mode == EPsmsrvModePowerSave || mode == EPsmsrvPartialMode ) {

        mPsmMode = ETrue;

    }

    else {

        mPsmMode = EFalse;

    }

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_CHECKPSMMODEL_EXIT, this);

}

/*!

    Function to load the WLAN Settings from CommsDB.

*/

void CWlanSettingsPrivate::LoadDBSettingsL()

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_LOADDBSETTINGSL_ENTRY, this);

    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

    mScanInterval = record->iBgScanInterval;

    //In Case of PSM mode Scan Interval should be set to Auto

    if (mPsmMode) {

        mScanInterval = KWlanSettingsScanNetworkAuto;

    }

    else {

        mScanInterval = record->iSavedBgScanInterval;

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

        if (mScanInterval > (KWlanSettingsScanNetworkMax

                * KWlanSettingsSecondsInMinute)) {

            mScanInterval = KWlanSettingsScanNetworkAuto;

        }

    }

    mPowerSaving = record->iWlanPowerMode;

    CleanupStack::PopAndDestroy( record ); 

    if ( ownTransaction ) {

        mSession->CommitTransactionL();

          // Rollback operation.

    }

    //To Load CM Settings.

    LoadJoinWlanSettingL();

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_LOADDBSETTINGSL_EXIT, this);

}

/*!

    Function to load the Join WLAN networks Setting from CMManager.

*/

void CWlanSettingsPrivate::LoadJoinWlanSettingL()

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_LOADJOINWLANSETTINGL_ENTRY, this);

    RCmManager CmManager;

    CmManager.CreateTablesAndOpenL();

    CleanupClosePushL(CmManager); 

    CmManager.ReadGenConnSettingsL( mCmSettings );

    CleanupStack::PopAndDestroy( 1 );     //CmManager

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_LOADJOINWLANSETTINGL_EXIT, this);

}

/*!

    Function to write the Join WLAN networks Setting using CMManager.

*/

void CWlanSettingsPrivate::SaveJoinWlanSettingL(TInt mode)

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_SAVEJOINWLANSETTINGL_ENTRY, this);

    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 );

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_SAVEJOINWLANSETTINGL_EXIT, this);

}

/*!

    Function to get the Join WLAN network setting.

    \return 0 for Known, 1 for Manual.

*/

TInt CWlanSettingsPrivate::JoinWlanMode()

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_JOINWLANMODE_ENTRY, this);

    TInt mode = 0;

    switch ( mCmSettings.iUsageOfWlan ) {

        case ECmUsageOfWlanKnown: 

            mode = EJoinWlanKnown;

            break;

        case ECmUsageOfWlanManual:

            mode = EJoinWlanManual;

            break;

        default:

            break;

    }

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_JOINWLANMODE_EXIT, this);

    return mode;

}

/*!

    Function to write the WLAN Settings to CommsDb.

*/

void CWlanSettingsPrivate::SaveDBSettingsL(TInt option)

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_SAVEDBSETTINGSL_ENTRY, this);

    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 ( !mPsmMode ) {

                record->iSavedBgScanInterval = mScanInterval;

            }

            break;

        case EWlanPowerSaving:

            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

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_SAVEDBSETTINGSL_EXIT, this);

}

/*!

    Function to get the scan interval.

    \return Scan interval  in minutes.

*/

TUint CWlanSettingsPrivate::ScanInterval()

{

    if ( mScanInterval == KWlanSettingsScanNetworkAuto ) {

        return mScanInterval;   

    }

    else {

        // Return scan time in minutes

        return ( mScanInterval / KWlanSettingsSecondsInMinute );

    }

}

/*!

    Function to get Power Saving Option.

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

*/

TBool CWlanSettingsPrivate::PowerSaving()

{

    return mPowerSaving;

}

/*!

    Function to set Scan interval.

    \param interval Scan interval in minutes. 

*/

void CWlanSettingsPrivate::SetScanInterval(TUint interval)

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_SETSCANINTERVAL_ENTRY, this);

    if ( interval == KWlanSettingsScanNetworkAuto ) {

        mScanInterval = interval;

    }

    else {

        // Scan time stored in seconds

        mScanInterval = interval * KWlanSettingsSecondsInMinute;

    }

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_SETSCANINTERVAL_EXIT, this);

}

/*!

    Function to set Power Saving Option.

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

*/

void CWlanSettingsPrivate::SetPowerSaving(TBool powerSavingOption)

{

    OstTraceFunctionEntry1(CWLANSETINGPRIVATE_SETPOWERSAVING_ENTRY, this);

    mPowerSaving = powerSavingOption;

    OstTraceFunctionExit1(CWLANSETINGPRIVATE_SETPOWERSAVING_EXIT, this);

}

/*!

    Function to get Power Saving status of the device.

    \return True if Power Saving is enabled.

*/

TBool CWlanSettingsPrivate::IsPsmEnabled()

{

    return mPsmMode;

}