/*

* 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:  Harvester server harvesting queue*

*/

#include "harvesterqueue.h"

#include "harvesterao.h"

#include "harvesterlog.h"

#include "harvesterblacklist.h"

#include "mdsutils.h"

#include "harvestercommon.h"

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

// NewL

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

//

CHarvesterQueue* CHarvesterQueue::NewL( CHarvesterAO* aHarvesterAO,

		CHarvesterBlacklist* aBlacklist )

    {

    WRITELOG( "CHarvesterQueue::NewL()" );

    CHarvesterQueue* self = CHarvesterQueue::NewLC( aHarvesterAO, aBlacklist );

    CleanupStack::Pop( self );

    return self;	

    }

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

// NewLC

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

//

CHarvesterQueue* CHarvesterQueue::NewLC( CHarvesterAO* aHarvesterAO,

		CHarvesterBlacklist* aBlacklist )

    {

    WRITELOG( "CHarvesterQueue::NewLC()" );

    CHarvesterQueue* self = new ( ELeave ) CHarvesterQueue(

    		aHarvesterAO, aBlacklist );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CHarvesterQueue

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

//            

CHarvesterQueue::CHarvesterQueue( CHarvesterAO* aHarvesterAO,

		CHarvesterBlacklist* aBlacklist ) : iMediaIdUtil( NULL )

    {

    WRITELOG( "CHarvesterQueue::CHarvesterQueue()" );

    iHarvesterAO = aHarvesterAO;

    iBlacklist = aBlacklist;

    }

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

// ~CHarvesterQueue

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

//            

CHarvesterQueue::~CHarvesterQueue()

    {

    WRITELOG( "CHarvesterQueue::CHarvesterQueue()" );

    iItemQueue.ResetAndDestroy();

    iItemQueue.Close();

    iFs.Close();

    RMediaIdUtil::ReleaseInstance();

    if (iHEM)

        {

        iHEM->ReleaseInstance();

        }

    }

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

// ConstructL

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

//

void CHarvesterQueue::ConstructL()

    {

    WRITELOG( "CHarvesterQueue::ConstructL()" );

    User::LeaveIfError( iFs.Connect() );

	iMediaIdUtil = &RMediaIdUtil::GetInstanceL();

    iHEM = CHarvesterEventManager::GetInstanceL();

    }

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

// ItemsInQueue

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

// 

TInt CHarvesterQueue::ItemsInQueue()

    {

    WRITELOG( "CHarvesterQueue::ItemsInQueue()" );

    return iItemQueue.Count();

    }

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

// GetNextItem

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

//

CHarvesterData* CHarvesterQueue::GetNextItem()

	{

    WRITELOG( "CHarvesterQueue::GetNextItem()" );

    CHarvesterData* item = NULL;

   	if ( iItemQueue.Count() > 0 )

        {

#ifdef _DEBUG

        WRITELOG1( "Harvester queue items = %d", iItemQueue.Count() );

#endif

        item = iItemQueue[0];

        iItemQueue.Remove( 0 );	

        }

   	if( iItemQueue.Count() == 0 )

        {

        WRITELOG( "Harvester queue items zero!" );

        iItemQueue.Compress();

        }

   	WRITELOG( "CHarvesterQueue::GetNextItem, end" );

   	return item;

	}    

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

// Append

// Files are checked against blacklist and blacklisted files

// will not be appended.

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

//

void CHarvesterQueue::Append( CHarvesterData* aItem )

	{

    WRITELOG( "CHarvesterQueue::Append()" );

    TInt err( KErrNone );

        {

        TUint32 mediaId( 0 );

		err = iMediaIdUtil->GetMediaId( aItem->Uri(), mediaId );

        TTime time( 0 );

        if ( err == KErrNone && iBlacklist->IsBlacklisted(

        		aItem->Uri(), mediaId, time ) )

            {

            WRITELOG( "CHarvesterQueue::Append() - found a blacklisted file" );

            if( aItem->ObjectType() == EPlaceholder )

                {

                TRAP_IGNORE( iHEM->DecreaseItemCountL( EHEObserverTypePlaceholder ) );

                }

            TRAP_IGNORE( iHEM->DecreaseItemCountL( EHEObserverTypeMMC ) );

            if( aItem->EventType() == EHarvesterEdit )

                {

                // Remove possible placeholder items from DB if file was blacklisted during harvesting

                iHarvesterAO->RemoveBlacklistedFile( aItem );

                }

            delete aItem;

            aItem = NULL;

            return;

            }

        }

	// check if fast harvest file and add to start of queue

    if ( aItem->ObjectType() == EFastHarvest || aItem->Origin() == MdeConstants::Object::ECamera )

    	{

    	err = iItemQueue.Insert( aItem, 0 );

    	if( !iHarvesterAO->IsActive() )

    	    {

            iHarvesterAO->SetPriority( KHarvesterPriorityMonitorPlugin );

    	    }

    	}

    else

    	{

    	err = iItemQueue.Append( aItem );

    	}

    if( err != KErrNone )

		{

		delete aItem;

		aItem = NULL;

        }

    }

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

// RemoveItems

// Remove items from the queue based on them mediaid.

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

//

TUint CHarvesterQueue::RemoveItems( TUint32 aMediaId )

    {

#ifdef _DEBUG

    WRITELOG1( "CHarvesterQueue::RemoveItems( %d )", aMediaId);

    WRITELOG1( "CHarvesterQueue::RemoveItems() iItemQueue.Count() == %d", iItemQueue.Count());

#endif

    TUint removedCount(0);

    TInt err(KErrNone);

    TUint32 mediaId( 0 );

    CHarvesterData* hd = NULL;

    for( TInt i = iItemQueue.Count() - 1; i >=0; i-- )

        {

        hd = iItemQueue[i];

        err = iMediaIdUtil->GetMediaId( hd->Uri(), mediaId );

        if( err == KErrNone)

            {

            if( mediaId == aMediaId)

                {

                delete hd;

                hd = NULL;

                iItemQueue.Remove( i );

                removedCount++;

                }

            else

                {

                WRITELOG2( "CHarvesterQueue::RemoveItems( ) %d != %d", mediaId, aMediaId);

                }

            }

        else

            {

            WRITELOG1( "CHarvesterQueue::RemoveItems( ) GetMediaId err == %d", err);

            }

        }

    if( removedCount > 0 )

        {

        iItemQueue.Compress();

        }

#ifdef _DEBUG

    WRITELOG2( "CHarvesterQueue::RemoveItems() iItemQueue.Count() = %d, removedCount = %d", iItemQueue.Count(), removedCount);

#endif

    return removedCount;

    }

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

// MonitorEvent

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

//  

void CHarvesterQueue::MonitorEvent( CHarvesterData* aHarvesterData )

    {

   	Append( aHarvesterData );

    // signal to start harvest if harvester idles

    if ( !iHarvesterAO->IsServerPaused() && iHarvesterAO->GetHarvesterAORunState() == CHarvesterAO::ERequestIdle )

        {

        iHarvesterAO->SetNextRequest( CHarvesterAO::ERequestHarvest );

        }

    }

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

// MonitorEvent

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

//  

void CHarvesterQueue::MonitorEvent(

        RPointerArray<CHarvesterData>& aHarvesterDataArray )

    {

    const TInt count( aHarvesterDataArray.Count() );

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

    	{

    	MonitorEvent( aHarvesterDataArray[i] );

    	}

    }