/*

* 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 the License "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: 

*

*/

// INCLUDE FILES

#include "CIptvDriveMonitor.h"

#include "MIptvDriveMonitorObserver.h"

#include "TIptvDriveMonitorEvent.h"

#include <bldvariant.hrh>

#ifdef RD_MULTIPLE_DRIVE_ENABLERS

#include <driveinfo.h>

#endif

#include <centralrepository.h>

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES  

// CONSTANTS

#if IPTV_LOGGING_METHOD != 0

_LIT( KIptvMediaNotPresentDes, "EMediaNotPresent");

_LIT( KIptvMediaUnknownDes, "EMediaUnknown");

_LIT( KIptvMediaFloppyDes, "EMediaFloppy");

_LIT( KIptvMediaHardDiskDes, "EMediaHardDisk");

_LIT( KIptvMediaCdRomDes, "EMediaCdRom");

_LIT( KIptvMediaRamDes, "EMediaRam");

_LIT( KIptvMediaFlashDes, "EMediaFlash");

_LIT( KIptvMediaRomDes, "EMediaRom");

_LIT( KIptvMediaRemoteDes, "EMediaRemote");

_LIT( KIptvMediaNANDFlashDes, "EMediaNANDFlash");

#endif

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

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

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

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

// CIptvDriveMonitor::CIptvDriveMonitor

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

// might leave.

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

//

CIptvDriveMonitor::CIptvDriveMonitor()

: CActive( EPriorityStandard )

    {

    IPTVLOGSTRING_HIGH_LEVEL("CIptvDriveMonitor::CIptvDriveMonitor() start");

    IPTVLOGSTRING_HIGH_LEVEL("CIptvDriveMonitor::CIptvDriveMonitor() exit");

    }

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

// CIptvEvents::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CIptvDriveMonitor::ConstructL( const RFs& aFileSession )

    {

    iFs                  = aFileSession;

    iIfsIsProvidedByUser = ETrue;

    ConstructL();    

    }

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

// CIptvEvents::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CIptvDriveMonitor::ConstructL()

    {

    iObservers.Reset();

    iAvailableDrives.Reset();

    iPreviousAvailableDrives.Reset();

    if ( !iIfsIsProvidedByUser )

        {

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

        }

    iSystemDrive = iFs.GetSystemDrive();

    TInt err = DriveInfo::GetDefaultDrive( DriveInfo::EDefaultMassStorage, iDefaultMassStorageDrive );

    if ( err != KErrNone )

        {

        iDefaultMassStorageDrive = KErrNotFound;        

        }

    err = DriveInfo::GetDefaultDrive( DriveInfo::EDefaultRemovableMassStorage, iDefaultMemoryCardDrive );

    if ( err != KErrNone )

        {

        iDefaultMassStorageDrive = KErrNotFound;        

        }

    CActiveScheduler::Add( this );

    RefreshAvailableDrivesL();

    IPTVLOGSTRING2_HIGH_LEVEL("CIptvDriveMonitor:: PhoneMemoryDrive() returns %d",

        PhoneMemoryDrive());

    IPTVLOGSTRING2_HIGH_LEVEL("CIptvDriveMonitor:: MemoryCardDrive() returns %d",

        MemoryCardDrive());

    IPTVLOGSTRING2_HIGH_LEVEL("CIptvDriveMonitor:: MassStorageDrive() returns %d",

        MassStorageDrive());

    IPTVLOGSTRING2_HIGH_LEVEL("CIptvDriveMonitor:: FixedDrive(c-drive excluded) returns %d",

        FixedDrive( ETrue ));

#if IPTV_LOGGING_METHOD != 0

    PrintAvailableDrives();

#endif

    }

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

// CIptvDriveMonitor::NewL

// Two-phased constructor.

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

//

CIptvDriveMonitor* CIptvDriveMonitor::NewL()

    {

    IPTVLOGSTRING_HIGH_LEVEL("CIptvDriveMonitor::NewL() start");

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

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop(self);

    IPTVLOGSTRING_HIGH_LEVEL("CIptvDriveMonitor::NewL() exit");

    return self;

    }

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

// CIptvDriveMonitor::NewL

// Two-phased constructor.

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

//

CIptvDriveMonitor* CIptvDriveMonitor::NewL( const RFs& aFileSession )

    {

    IPTVLOGSTRING_HIGH_LEVEL("CIptvDriveMonitor::NewL(RFs&) start");

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

    CleanupStack::PushL( self );

    self->ConstructL( aFileSession );

    CleanupStack::Pop(self);

    IPTVLOGSTRING_HIGH_LEVEL("CIptvDriveMonitor::NewL(RFs&) exit");

    return self;

    }

// Destructor

CIptvDriveMonitor::~CIptvDriveMonitor()

    {

    iObservers.Close();

    iAvailableDrives.Close();

    iPreviousAvailableDrives.Close();

    Cancel();

    if ( !iIfsIsProvidedByUser )

        {

        iFs.Close();

        }

    }

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

// CIptvDriveMonitor::RegisterObserverL

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

//

void CIptvDriveMonitor::RegisterObserverL( MIptvDriveMonitorObserver* aObserver )

    {

    iObservers.AppendL( aObserver );

    if ( !IsActive() )

        {

        iFs.NotifyChange( ENotifyDisk, iStatus );

        SetActive();

        }

    }

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

// CIptvDriveMonitor::RemoveObserverL

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

//

void CIptvDriveMonitor::RemoveObserverL( MIptvDriveMonitorObserver* aObserver )

    {

    TInt i;

    for ( i = 0; i < iObservers.Count(); i++ )

        {

        if ( aObserver == iObservers[i] )

            {

            iObservers.Remove( i );

            iObservers.Compress();

            break;

            }

        }

    if ( iObservers.Count() == 0 )

        {

        iFs.NotifyChangeCancel();

        }    

    }

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

// CIptvDriveMonitor::RefreshAvailableDrivesL

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

//

void CIptvDriveMonitor::RefreshAvailableDrivesL()

    {

    IPTVLOGSTRING_LOW_LEVEL("CIptvDriveMonitor::RefreshAvailableDrivesL() start");

    TDriveList driveList;

    User::LeaveIfError( iFs.DriveList( driveList ) );

    iPreviousAvailableDrives.Reset();

    TInt i;

    for ( i = 0; i < iAvailableDrives.Count(); i++ )

        {

        iPreviousAvailableDrives.Append( iAvailableDrives[i] );

        }

    iAvailableDrives.Reset();

    for ( i = 0; i < driveList.Length(); i++ )

        {

        if ( driveList[i] != 0 )

            {

            TDriveInfo driveInfo;

            User::LeaveIfError( iFs.Drive( driveInfo, i ) );

            IPTVLOGSTRING3_LOW_LEVEL("CIptvDriveMonitor:: drive[%d]: type = %S",

                                     i,

                                     &DriveTypeDes( driveInfo.iType ));

            IPTVLOGSTRING3_LOW_LEVEL(

                "CIptvDriveMonitor::           MediaAtt flags = %x DriveAtt flags = %x",

                    driveInfo.iMediaAtt,

                    driveInfo.iDriveAtt );

#ifdef __WINSCW__

            // (2) c-drive is EMediaRam

            // (3) d-drive is EMediaHardDisk

            // (4) e-drive is EMediaHardDisk or EMediaNotPresent

            // (25) z-drive is EMediaRom

            if ( (driveInfo.iType == EMediaRam) ||                                     // c

                 ((driveInfo.iType == EMediaHardDisk) && i != EDriveD /* skip d */) || // e

                 (driveInfo.iType == EMediaNANDFlash) ||                               // nothing

                 (driveInfo.iType == EMediaNotPresent) )                               // e

#else

            // (2) c-drive is EMediaNANDFlash

            // (3) d-drive is EMediaRam

            // (4) e-drive is EMediaHardDisk or EMediaNotPresent

            // (5) f-drive is EMediaHardDisk or EMediaNotPresent

            // (25) z-drive is EMediaRom

            if ( (driveInfo.iType == EMediaHardDisk) ||  // e,f

                 (driveInfo.iType == EMediaNANDFlash) || // c

                 (driveInfo.iType == EMediaNotPresent) ) // e,f

#endif // __WINSCW__

                {                

                if ( !(driveInfo.iMediaAtt & KMediaAttWriteProtected) &&

                      (driveInfo.iDriveAtt & KDriveAttLocal) )

                    {

                    TIptvDriveInfo iptvDriveInfo;

                    TVolumeInfo volumeInfo;

                    TChar ch;

                    iFs.DriveToChar( i, ch );

                    iptvDriveInfo.iDrive     = i;

                    iptvDriveInfo.iDriveChar = ch;

                    iptvDriveInfo.iType      = driveInfo.iType;

                    TUint driveStatus;

                    TInt err = DriveInfo::GetDriveStatus( iFs, i, driveStatus );

                    if ( err == KErrNone )

                        {

                        if ( driveStatus & DriveInfo::EDriveRemovable )

                            {

                            iptvDriveInfo.iFlags |= TIptvDriveInfo::ERemovable;

                            }

                        }

                    TInt massStorageDrive;

                    err = DriveInfo::GetDefaultDrive( DriveInfo::EDefaultMassStorage,

                                                      massStorageDrive );

                    if ( err == KErrNone )

                        {

                        if ( i == massStorageDrive )

                            {

                            iptvDriveInfo.iFlags |= TIptvDriveInfo::EMassStorage;

                            }                        

                        }

                    if ( driveInfo.iMediaAtt & KMediaAttLocked )

                        {

                        iptvDriveInfo.iFlags |= TIptvDriveInfo::ELocked;

                        }

                    if ( driveInfo.iType == EMediaNotPresent )

                        {

                        iptvDriveInfo.iFlags |= TIptvDriveInfo::EMediaNotPresent;

                        }

                    // When mass storage mode is activated while application is running,

                    // the only hint about that is the TVolumeInfo not being available. 

                    // Therefore we mark drive as EMediaNotPresent if that structure

                    // is not available.

                    if ( iFs.Volume( volumeInfo, i ) != KErrNone )

                        {

                        iptvDriveInfo.iFlags |= TIptvDriveInfo::EMediaNotPresent;

                        iptvDriveInfo.iVolumeName.Zero();

                        }

                    else

                        {

                        iptvDriveInfo.iVolumeName = volumeInfo.iName;

                        }

                    if ( iptvDriveInfo.iFlags & TIptvDriveInfo::EMediaNotPresent )

                        {

                        iptvDriveInfo.iFlags |= TIptvDriveInfo::ERemovable;

                        }

                    iAvailableDrives.AppendL( iptvDriveInfo );

                    }

                }

            }

        } // for

    // if e and f-drives are available, then c-drive is removed from the available drives list

    if ( ArrayPos( EDriveE ) != KErrNotFound &&

         ArrayPos( EDriveF ) != KErrNotFound )

        {

        TInt cDrivePos = ArrayPos( EDriveC );

        if ( cDrivePos != KErrNotFound )

            {

            IPTVLOGSTRING_LOW_LEVEL(

                "CIptvDriveMonitor:: e & f-drives available -> removing c from available drives");

            iAvailableDrives.Remove( cDrivePos );

            iAvailableDrives.Compress();

            }

        }

    IPTVLOGSTRING_LOW_LEVEL("CIptvDriveMonitor::RefreshAvailableDrivesL() exit");

    }

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

// CIptvDriveMonitor::ArrayPos

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

//

TInt CIptvDriveMonitor::ArrayPos( TInt aDrive )

    {

    TInt i;

    for (i = 0; i < iAvailableDrives.Count(); i++ )

        {

        if ( iAvailableDrives[i].iDrive == aDrive )

            {

            return i;

            }

        }

    return KErrNotFound;

    }

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

// CIptvDriveMonitor::ArrayPosL

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

//

TInt CIptvDriveMonitor::ArrayPosL( TInt aDrive )

    {

    TInt pos;

    User::LeaveIfError( pos = ArrayPos( aDrive ) );

    return pos;

    }

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

// CIptvDriveMonitor::MemoryCardDriveL

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

//

TInt CIptvDriveMonitor::MemoryCardDriveL()

    {

    TInt drive;

    User::LeaveIfError( drive = MemoryCardDrive() );

    return drive;

    }

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

// CIptvDriveMonitor::MemoryCardDrive

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

//

TInt CIptvDriveMonitor::MemoryCardDrive()

    {

    TInt i;

    for ( i = 0; i < iAvailableDrives.Count(); i++ )

        {

        if ( iAvailableDrives[i].iDrive == iDefaultMemoryCardDrive )

            {

            return iAvailableDrives[i].iDrive;

            }

        }

    return KErrNotFound;

    }

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

// CIptvDriveMonitor::MassStorageDriveL

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

//

TInt CIptvDriveMonitor::MassStorageDriveL()

    {

    TInt drive;

    User::LeaveIfError( drive = MassStorageDrive() );

    return drive;

    }

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

// CIptvDriveMonitor::MassStorageDrive

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

//

TInt CIptvDriveMonitor::MassStorageDrive()

    {

    TInt i;

    for ( i = 0; i < iAvailableDrives.Count(); i++ )

        {

        if ( iAvailableDrives[i].iDrive == iDefaultMassStorageDrive )

            {

            return iAvailableDrives[i].iDrive;

            }

        }

    return KErrNotFound;

    }

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

// CIptvDriveMonitor::PhoneMemoryDriveL

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

//

TInt CIptvDriveMonitor::PhoneMemoryDriveL()

    {

    TInt drive;

    User::LeaveIfError( drive = PhoneMemoryDrive() );

    return drive;

    }

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

// CIptvDriveMonitor::PhoneMemoryDrive

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

//

TInt CIptvDriveMonitor::PhoneMemoryDrive()

    {

    TInt i;

    for ( i = 0; i < iAvailableDrives.Count(); i++ )

        {

        if ( iAvailableDrives[i].iDrive == iSystemDrive )

            {

            return iAvailableDrives[i].iDrive;

            }

        }

    return KErrNotFound;

    }

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

// CIptvDriveMonitor::FixedDriveL

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

//

TInt CIptvDriveMonitor::FixedDriveL( TBool aExcludeCDrive )

    {

    TInt drive;

    User::LeaveIfError( drive = FixedDrive( aExcludeCDrive ) );

    return drive;

    }

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

// CIptvDriveMonitor::FixedDrive

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

//

TInt CIptvDriveMonitor::FixedDrive( TBool aExcludeCDrive )

    {

    TInt i;

    for ( i = 0; i < iAvailableDrives.Count(); i++ )

        {

        IPTVLOGSTRING2_LOW_LEVEL("CIptvDriveMonitor:: iAvailableDrives[%d]", i);

        if ( !(iAvailableDrives[i].iFlags & TIptvDriveInfo::ERemovable) )

            {

            if ( iAvailableDrives[i].iDrive != EDriveC )

                {

                IPTVLOGSTRING2_LOW_LEVEL("CIptvDriveMonitor:: FixedDrive() returning drive %d", iAvailableDrives[i].iDrive);

                return iAvailableDrives[i].iDrive;

                }

            else

                {

                if ( !aExcludeCDrive )

                    {

                    IPTVLOGSTRING2_LOW_LEVEL("CIptvDriveMonitor:: FixedDrive() returning drive %d", iAvailableDrives[i].iDrive);

                    return iAvailableDrives[i].iDrive;

                    }   

                }

            }

        }

    IPTVLOGSTRING_LOW_LEVEL("CIptvDriveMonitor:: FixedDrive() fixed drive not found");

    return KErrNotFound;

    }

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

// CIptvDriveMonitor::IsMassStorageDriveL

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

//