/** @file

* Copyright (c) 2005-2008 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:  Detects remove disk event.

*

*/

// INCLUDE FILES

#include "upnpdiskremovedetector.h"

#include "upnpmediaserver.h"

#include "upnpcontentdirectoryglobals.h"

#include <f32file.h>

#ifdef _DEBUG

#define KLogFile _L("UPnPMediaServer.txt")

#endif

#include "upnpcustomlog.h"

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

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

// CUpnpDiskRemoveDetector::CUpnpDiskRemoveDetector

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CUpnpDiskRemoveDetector::CUpnpDiskRemoveDetector( CUpnpMediaServer* aObserver ) :

    CActive( CActive::EPriorityStandard ), iObserver( aObserver )

    {

    }

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

// CUpnpDiskRemoveDetector::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CUpnpDiskRemoveDetector::ConstructL()

    {

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

    CActiveScheduler::Add( this );

    }

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

// CUpnpDiskRemoveDetector::NewLC

// Two-phased constructor.

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

//

CUpnpDiskRemoveDetector* CUpnpDiskRemoveDetector::NewLC(

    CUpnpMediaServer* aObserver )

    {

    CUpnpDiskRemoveDetector* self =

    	new (ELeave) CUpnpDiskRemoveDetector( aObserver );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CUpnpDiskRemoveDetector::NewL

// Two-phased constructor.

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

//

CUpnpDiskRemoveDetector* CUpnpDiskRemoveDetector::NewL(

    CUpnpMediaServer* aObserver )

    {

    CUpnpDiskRemoveDetector* self =

            CUpnpDiskRemoveDetector::NewLC( aObserver );

    CleanupStack::Pop( self );

    return self;

    }

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

// CUpnpDiskRemoveDetector::~CUpnpDiskRemoveDetector

// Destructor

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

//

CUpnpDiskRemoveDetector::~CUpnpDiskRemoveDetector()

    {

    Cancel();

    iFs.Close();

    }

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

// CUpnpDiskRemoveDetector::Start

// Enable object to watch for incoming events.

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

//

void CUpnpDiskRemoveDetector::StartL()

    {

    if ( !IsActive() )

        {

        // we want to check the validity of upload directory on MS startup

        CheckUploadDirectoryL();

        SubscribeForDiskEvent();

        }

    }

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

// CUpnpDiskRemoveDetector::CheckUploadDirectoryL

// Check if the upload direcotory is valid.

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

//

void CUpnpDiskRemoveDetector::CheckUploadDirectoryL()

    {

    // Getting current upload directory from cenrep

    CUpnpMediaServerSettings* settings = CUpnpMediaServerSettings::NewL();

    CleanupStack::PushL( settings );

    HBufC8* uploadtmp = settings->GetL( UpnpMediaServerSettings::EUploadDirectory );

    CleanupStack::PushL( uploadtmp );

    HBufC* uploaddir = HBufC::NewLC( uploadtmp->Length() );

    uploaddir->Des().Copy( *uploadtmp );

    // retrieving drive info

    TParse path;

    path.Set( uploaddir->Des(), NULL, NULL );

    TDriveUnit driveUnit( path.Drive() );

    TVolumeInfo volumeInfo;

    volumeInfo.iDrive.iType = EMediaNotPresent;

    TInt err = iFs.Volume( volumeInfo, static_cast<TInt>( driveUnit ) );

    if ( err != KErrNone )

        {

        TChar systemDriveLetter;

        TInt error = RFs::DriveToChar( RFs::GetSystemDrive(), systemDriveLetter );

        RBuf tmpUploadDir;

        tmpUploadDir.CleanupClosePushL();

        tmpUploadDir.CreateL( KCharLen

                            + KCol().Length()

                            + KDiskPathElSep().Length()

                            + KDefaultUploadDir().Length() );

        tmpUploadDir.Append( systemDriveLetter );

        tmpUploadDir.Append( KCol() );

        tmpUploadDir.Append( KDiskPathElSep() );

        tmpUploadDir.Append( KDefaultUploadDir() );

        iObserver->SetUploadDirL( tmpUploadDir );

        CleanupStack::PopAndDestroy( &tmpUploadDir );

        }

    else

        {

        LOGS( "CUpnpDiskRemoveDetector - some disk was dismounted, but it's not interesting in that context" );

        }

    CleanupStack::PopAndDestroy( uploaddir );

    CleanupStack::PopAndDestroy( uploadtmp );

    CleanupStack::PopAndDestroy( settings );

    }

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

// CUpnpDiskRemoveDetector::SubscribeForDiskEvent

// Subscribe this object for file system disk event

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

//

void CUpnpDiskRemoveDetector::SubscribeForDiskEvent()

    {

    // wait for FileSystem disk event (like MMC card removal)

    if ( !IsActive() )

        {

        iFs.NotifyChange( ENotifyDisk, iStatus );

        SetActive();

        }

    }

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

// CUpnpDiskRemoveDetector::RunL

// Called after event occurs or on media server startup

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

//

void CUpnpDiskRemoveDetector::RunL()

    {

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

    CheckUploadDirectoryL();

    SubscribeForDiskEvent();

    }

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

// CUpnpDiskRemoveDetector::RunError

// RunError is called when RunL leaves.

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

//

TInt CUpnpDiskRemoveDetector::RunError( TInt aError )

    {

    LOGS1( "CUpnpDiskRemoveDetector::RunError(%d)", aError );

    SubscribeForDiskEvent();

    return KErrNone;

    }

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

// CUpnpDiskRemoveDetector::DoCancel

// Cancel watching for incoming events.

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

//

void CUpnpDiskRemoveDetector::DoCancel()

    {

    iFs.NotifyChangeCancel();

    }

// End of File