/*

* 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:  Battery state utility component providing percentual information

*                about battery capacity.

*

*/

// INCLUDE FILES

#include <e32svr.h>

#include <centralrepository.h>

#include <e32property.h>

#include <hwrmpowerstatesdkpskeys.h>

#include "bsutilprivatecrkeys.h"

#include "bsutil.h"

#include "trace.h"

// CONSTANTS

const TUint8 KMinBatteryCapacity = 0;       // 0 %

const TUint8 KMaxBatteryCapacity = 100;     // 100 %

const TUint8 KInitialBatteryCapacity = 100; // 100 %

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

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

// -----------------------------------------------------------------------------

// CBSUtil::CBSUtil

// C++ constructor

// -----------------------------------------------------------------------------

//

CBSUtil::CBSUtil() : 

    iBatteryCapacity( KInitialBatteryCapacity )

    {

    FUNC_LOG

    }

// ---------------------------------------------------------

// Destructor

// ---------------------------------------------------------

//

CBSUtil::~CBSUtil()

    {

    FUNC_LOG

    }

// -----------------------------------------------------------------------------

// CHWRMVibra::NewL

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

EXPORT_C CBSUtil* CBSUtil::NewL()

    {

    FUNC_LOG

    CBSUtil* self = NewLC();

    CleanupStack::Pop( self );

    return self;

    }

// -----------------------------------------------------------------------------

// CBSUtil::NewLC

// Two-phased constructor. Leaves instance to CleanupStack.

// -----------------------------------------------------------------------------

//

EXPORT_C CBSUtil* CBSUtil::NewLC()

    {

    FUNC_LOG

    CBSUtil* self = new( ELeave ) CBSUtil();

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// -----------------------------------------------------------------------------

// CBSUtil::ConstructL

// Symbian 2nd phase constructor can leave.

// -----------------------------------------------------------------------------

//

void CBSUtil::ConstructL()

    {

    FUNC_LOG

    TInt err( KErrNone );

    // If reading of battery levels fails, use default levels.

    TRAP( err, ReadBatteryLevelsL() );

    if( err != KErrNone )

        {

        INFO_1( "CBSUtil::ConstructL - Reading battery levels err %d", err )

        const TUint8 defaultLevels[KBatteryLevelCount] =

            {

            };

        for( TInt i = 0; i < KBatteryLevelCount; i++ )

            {

            iBattelyLevels[i] = defaultLevels[i];

            }

        }

    // Update current battery level and capacity data

    UpdateCapacity();

    }

// -----------------------------------------------------------------------------

// CBSUtil::ReadBatteryLevelsL

// -----------------------------------------------------------------------------

//

void CBSUtil::ReadBatteryLevelsL()

    {

    FUNC_LOG

    CRepository* repository;

    repository = CRepository::NewLC( KCRUidBSUtilConf );

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel0, 

        iBattelyLevels[EBatteryLevelLevel0]));

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel1,

        iBattelyLevels[EBatteryLevelLevel1]));

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel2, 

        iBattelyLevels[EBatteryLevelLevel2]));

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel3, 

        iBattelyLevels[EBatteryLevelLevel3]));

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel4, 

        iBattelyLevels[EBatteryLevelLevel4]));

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel5, 

        iBattelyLevels[EBatteryLevelLevel5]));

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel6, 

        iBattelyLevels[EBatteryLevelLevel6]));

    User::LeaveIfError(repository->Get(KBSUtilBatteryLevel7, 

        iBattelyLevels[EBatteryLevelLevel7]));

    // Let's validate battery levels' configuration. I.e. check 

    // that in valid  range and in increasing percentual order.

    for( TInt i(0); i < KBatteryLevelCount; i++ )

        {

        if( ( i < (KBatteryLevelCount - 1) ) &&

          ( iBattelyLevels[i] < KMinBatteryCapacity || 

            iBattelyLevels[i] > KMaxBatteryCapacity || 

            iBattelyLevels[i] > iBattelyLevels[i+1] ) )

            {

            User::Leave( KErrArgument );

            }

        else if( ( i > 0 ) &&

            ( iBattelyLevels[i] < KMinBatteryCapacity || 

              iBattelyLevels[i] > KMaxBatteryCapacity || 

              iBattelyLevels[i-1] > iBattelyLevels[i] ) )

            {

            User::Leave( KErrArgument );

            }

        }

    CleanupStack::PopAndDestroy( repository );

    }

// -----------------------------------------------------------------------------

// CBSUtil::UpdateCapacity

//

// -----------------------------------------------------------------------------

// 

TUint8 CBSUtil::UpdateCapacity()

    {

    FUNC_LOG

    TInt value( 0 );

    TInt err( RProperty::Get( KPSUidHWRMPowerState, KHWRMBatteryLevel, value ) );

    INFO_2( "CBSUtil::UpdateCapacity - KHWRMBatteryLevel %d, err %d", value, err )

    if( err == KErrNone )

        {

        // Update battery level and capacity information

        if( value >= EBatteryLevelLevel0 &&

            value <= EBatteryLevelLevel7 )

            {

            iBatteryCapacity = iBattelyLevels[value];

            }

        }

    return iBatteryCapacity;

    }

// ========================== OTHER EXPORTED FUNCTIONS =========================

EXPORT_C TUint8 CBSUtil::GetBatteryCapacity()

    {

    FUNC_LOG

    return UpdateCapacity();

    }

//  End of File