/*

* Copyright (c) 2006-2009 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:  Active Object which actually performs the re-harvesting of the files*

*/

#include "reharvesterao.h"

#include "harvesterlog.h"

#include "mdeobject.h"

#include "mdsutils.h"

const TInt KResumeTime = 3000000;  //microseconds

const TInt KTimeIncrease = 1000000; //microseconds

const TInt KTimeLimit = 30000000;    //microseconds

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

// NewLC

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

//

CReHarvesterAO* CReHarvesterAO::NewLC()

	{

    WRITELOG( "CReHarvesterAO::NewLC() - begin" );

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

	CleanupStack::PushL( self );

	self->ConstructL();

	return self;

	}

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

// NewL

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

//

CReHarvesterAO* CReHarvesterAO::NewL()

	{  

    WRITELOG( "CReHarvesterAO::NewL() - begin" );

	CReHarvesterAO* self = CReHarvesterAO::NewLC();

	CleanupStack::Pop( self );

	return self;

	}

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

// CReHarvesterAO

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

//

CReHarvesterAO::CReHarvesterAO() : CActive( CActive::EPriorityStandard ),

    iQueue( NULL ), iDelay( KResumeTime )

 	{

    WRITELOG( "CReHarvesterAO::CReHarvesterAO()" );

 	}

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

// ~CReHarvesterAO

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

//

CReHarvesterAO::~CReHarvesterAO()

	{

	WRITELOG( "CReHarvesterAO::~CReHarvesterAO()" );

	Cancel();

	iItems.ResetAndDestroy();

	iItems.Close();

	iTimer.Close();

	}

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

// ConstructL

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

//

void CReHarvesterAO::ConstructL()

	{

	WRITELOG( "CReHarvesterAO::ConstructL()" );

	CActiveScheduler::Add( this );

	iTimer.CreateLocal();

	}

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

// RunL

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

//

void CReHarvesterAO::RunL()

	{

	WRITELOG( "ATTENTION!!! CReHarvesterAO::RunL" );

	User::LeaveIfError( iStatus.Int() );

	if ( iItems.Count() > 0 )

	    {

	    while( iItems.Count() > 0 )

    	    {

    	    CHarvesterData* item = iItems[0];

    	    iQueue->MonitorEvent( item );

    	    iItems.Remove( 0 );

    	    }

	    iItems.Compress();

	    iDelay += KTimeIncrease;

	    if( iDelay > KTimeLimit )

	        {

	        iDelay = KResumeTime;

	        }

	    const TTimeIntervalMicroSeconds32 delay = TTimeIntervalMicroSeconds32( iDelay );

    	iTimer.After( iStatus, delay );

	    SetActive();

	    }

	}

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

// DoCancel

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

//

void CReHarvesterAO::DoCancel()

	{

	WRITELOG( "CReHarvesterAO::DoCancel()" );

	}

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

// RunError

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

//

TInt CReHarvesterAO::RunError( TInt aError )

	{

	if (aError != KErrNone)

		{	

		WRITELOG1( "CReHarvesterAO::RunError - error: %d", aError );

		}

	return KErrNone;

	}

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

// SetHarvesterQueue

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

//

void CReHarvesterAO::SetHarvesterQueue( CHarvesterQueue* aQueue )

    {

    WRITELOG( "CReHarvesterAO::SetHarvesterQueue()" );

    iQueue = aQueue;

    }

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

// AddItem

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

//

void CReHarvesterAO::AddItem( CHarvesterData* aItem )

    {

    WRITELOG( "CReHarvesterAO::AddItem()" );

    aItem->SetErrorCode( KErrNone );

    // check if already exists

    for( TInt i = iItems.Count(); --i >= 0; )

        {

        if ( MdsUtils::Compare( iItems[i]->Uri(), aItem->Uri() ) == 0 )

            {

#ifdef _DEBUG

            WRITELOG1("CReHarvesterAO::AddItem() - %S already exists in re-harvester queue", &aItem->Uri() );

#endif

            delete aItem;

            aItem = NULL;

            return;

            }

        }

    if(iItems.Append( aItem ) != KErrNone )

        {

        delete aItem;

        aItem = NULL;

        }

    iDelay = KResumeTime;

    const TTimeIntervalMicroSeconds32 delay = TTimeIntervalMicroSeconds32( iDelay );

    if ( !IsActive() )

        {

        iTimer.After( iStatus, delay );

        SetActive();

        }

    }

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

// CheckItem

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

//

void CReHarvesterAO::CheckItem( CHarvesterData& aItem )

    {

    WRITELOG( "CReHarvesterAO::CheckItem()" );

    for( TInt i = iItems.Count(); --i >= 0; )

        {

        CHarvesterData* item = iItems[i];

        if ( aItem.Uri().CompareF( item->Uri() ) != 0 )

            {

            continue;

            }

        // found matching item

	    iItems.Remove( i );

	    delete item;

	    item = NULL;

        }

    if ( iItems.Count() == 0 )

        {

        WRITELOG( "CReHarvesterAO::CheckItem() - item count 0" );

        iItems.Compress();

        Cancel();

        iTimer.Cancel();

        }

    }

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

// ItemsInQueue

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

//

TInt CReHarvesterAO::ItemsInQueue()

	{

	return iItems.Count();

	}