/*

* 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:  Monitors MMC insertions and removals.*

*/

#include "mmcmonitorplugin.h"

#include "harvesterlog.h"

#include "mdsfileserverpluginclient.h"

#include "fsutil.h"

#include "harvestercenreputil.h"

#include <driveinfo.h>

#ifdef __WINSCW__

#include <pathinfo.h>

#endif

#include <e32cmn.h>

_LIT( KColon, ":" );

// construct/destruct

CMMCMonitorPlugin* CMMCMonitorPlugin::NewL()

    {

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

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

void CMMCMonitorPlugin::ConstructL() // second-phase constructor

    {

    WRITELOG( "CMMCMonitorPlugin::ConstructL" );

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

    iMMCMonitor = CMMCMonitorAO::NewL();

    iMountTask = CMMCMountTaskAO::NewL();

    iUsbMonitor = CMMCUsbAO::NewL();

    iMdEClient = NULL;

    }

CMMCMonitorPlugin::~CMMCMonitorPlugin() // destruct

    {

    WRITELOG( "CMMCMonitorPlugin::~CMMCMonitorPlugin" );

    if (iMMCMonitor)

    	{

    	iMMCMonitor->StopMonitoring();

    	delete iMMCMonitor;

    	}

	if (iUsbMonitor)

    	{

    	iUsbMonitor->StopMonitoring();

    	delete iUsbMonitor;

    	}

	if (iMountTask)

    	{

    	delete iMountTask;

    	}

	delete iMmcScanner;

	delete iHddScanner;

	iFs.Close();

    }

TBool CMMCMonitorPlugin::StartMonitoring( MMonitorPluginObserver& aObserver,

    CMdESession* aMdEClient, CContextEngine* /*aCtxEngine*/, 

    CHarvesterPluginFactory* aHarvesterPluginFactory )

    {

    WRITELOG( "CMMCMonitorPlugin::StartMonitoring" );

    iObserver = &aObserver;

    TRAPD( err, iMdEClient = CMdEHarvesterSession::NewL( *aMdEClient ) );

    if( err != KErrNone )

    	{

    	return EFalse;

    	}

    iMountTask->SetMonitorObserver( aObserver );

    iMountTask->SetMdeSession( iMdEClient );

    iMountTask->SetHarvesterPluginFactory( aHarvesterPluginFactory );

    // get present media IDs before last shutdown

    RArray<TMdEMediaInfo> medias;

    TRAP_IGNORE( iMdEClient->GetPresentMediasL( medias ) );

    // update db present status 

    TRAP( err, StartMonitoringAllMMCsL( medias ) );

    if ( err != KErrNone )

        {

        return EFalse;

        }

    TChar driveLetter( 0 );

	TBool presentState( EFalse );

	TUint32 hdMediaId( 0 );

    hdMediaId = iMountTask->GetInternalDriveMediaId();

    TBool alreadyWaited( EFalse );

    const TInt count( medias.Count() );

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

    	{

    	TRAP_IGNORE( iMdEClient->GetMediaL( medias[i].iMediaId, driveLetter, presentState ) );

    	if ( presentState && medias[i].iMediaId != hdMediaId )

    		{

    		// scan MMC if card was in phone

    		TRAP_IGNORE( iMmcScanner = CMmcScannerAO::NewL( medias[i].iMediaId, iMdEClient, iObserver,

    		    				aHarvesterPluginFactory, CActive::EPriorityHigh, alreadyWaited ) );

    		alreadyWaited = ETrue;

    		}

    	}

    if( hdMediaId == 0 )

        {

        // Try to fetch internall mass storage media id again if it was not mounted

        hdMediaId = iMountTask->GetInternalDriveMediaId();

        }

    // scan mass storage to catch all chances even if battery dies during operation that should  be catched

    if( hdMediaId )

		{

		TBool exists( EFalse );

		TRAP_IGNORE( exists= iMdEClient->GetMediaL( hdMediaId, driveLetter, presentState ) );

		if ( exists )

			{

			WRITELOG("CMMCMonitorPlugin::StartMonitoring - start mass storage scan");

			TMdEMediaInfo hdInfo;

			hdInfo.iMediaId = hdMediaId;

			hdInfo.iDrive = driveLetter;

			medias.Append( hdInfo );

			TRAP_IGNORE( iHddScanner = CMmcScannerAO::NewL( hdMediaId, iMdEClient, iObserver,

			    				aHarvesterPluginFactory, KHarvesterCustomImportantPriority, alreadyWaited ));

			}

		}

    iMMCMonitor->StartMonitoring( *this, medias );

    medias.Close();

   	return iUsbMonitor->StartMonitoring( *this );

    }

TBool CMMCMonitorPlugin::StopMonitoring()

    {

    WRITELOG( "CMMCMonitorPlugin::StopMonitoring" );

    iMMCMonitor->StopMonitoring();

    return iUsbMonitor->StopMonitoring();

    }

TBool CMMCMonitorPlugin::ResumeMonitoring( MMonitorPluginObserver& /*aObserver*/,

    CMdESession* /*aMdEClient*/, CContextEngine* /*aCtxEngine*/,

    CHarvesterPluginFactory* /*aHarvesterPluginFactory*/ )

    {

    WRITELOG( "CMMCMonitorPlugin::ResumeMonitoring" );

    iMountTask->SetCachingStatus( EFalse );

    return ETrue;

    }

TBool CMMCMonitorPlugin::PauseMonitoring()

    {

    WRITELOG( "CMMCMonitorPlugin::PauseMonitoring" ); // DEBUG INFO

    iMountTask->SetCachingStatus( ETrue );

    return ETrue;

    }

// constructor support

// don't export these, because used only by functions in this DLL, eg our NewLC()

CMMCMonitorPlugin::CMMCMonitorPlugin() // first-phase C++ constructor

    {

    // No implementation required

    }

void CMMCMonitorPlugin::AddNotificationPathL( TChar aDrive )

    {

    WRITELOG( "CMMCMonitorPlugin::AddNotificationPath" );

    // 1 in length is for aDrive

    HBufC* path = HBufC::NewLC( 1 + KColon.iTypeLength );

    TPtr pathPtr = path->Des();

    pathPtr.Append( aDrive );

    pathPtr.Append( KColon );    

	CHarvesterCenRepUtil* cenRepoUtil = CHarvesterCenRepUtil::NewLC();

	cenRepoUtil->AddIgnorePathsToFspL( pathPtr );

	cenRepoUtil->FspEngine().AddNotificationPath( pathPtr );

	CleanupStack::PopAndDestroy( cenRepoUtil );    

    CleanupStack::PopAndDestroy( path );

    }

void CMMCMonitorPlugin::MountEvent( TChar aDriveChar, TUint32 aMediaID, TMMCEventType aEventType )

    {

    WRITELOG( "CMMCMonitorPlugin::MountEvent" );

    TMountData* mountData = NULL;

    mountData = new TMountData;

    if ( !mountData )

        {

        return;

        }

    if( aMediaID != 0 && aEventType == EMounted)

    	{

	    TUint status;

	    TInt drive;

	    iFs.CharToDrive( aDriveChar, drive );

		if( DriveInfo::GetDriveStatus( iFs, drive, status ) == KErrNone )

			{

			//The "Out of disk space" mde query uses the MdE_Preferences table

			if( !(status & DriveInfo::EDriveInternal) )

				{

				iMdEClient->AddMemoryCard( aMediaID );

				}

			}

    	}

    mountData->iDrivePath.Append( aDriveChar );

    mountData->iDrivePath.Append( KColon );

    mountData->iMediaID = aMediaID;

    switch ( aEventType )

        {

        case EMounted:

            {

            WRITELOG( "CMMCMonitorPlugin::MountEvent with parameter EMounted" );

            mountData->iMountType = TMountData::EMount;

            if( !iMountTask->IsActive() )

                {

                iMountTask->SetPriority( KHarvesterPriorityMonitorPlugin );

                }

            iMountTask->StartMount( *mountData );

            }

        break;

        case EDismounted:

            {

            if( aMediaID == 0 )

            	{

            	TRAP_IGNORE( mountData->iMediaID = FSUtil::GetPreviousMediaIDL( iMdEClient, aDriveChar ) );

            	}

            if( mountData->iMediaID )

            	{

	            WRITELOG( "CMMCMonitorPlugin::MountEvent with parameter EDismounted" );

	            mountData->iMountType = TMountData::EUnmount;

	            if( !iMountTask->IsActive() )

	                {

	                iMountTask->SetPriority( KHarvesterPriorityMonitorPlugin );

	                }

	            iMountTask->StartUnmount( *mountData );

            	}

            }

        break;

        case EFormatted:

            {

            WRITELOG( "CMMCMonitorPlugin::MountEvent with parameter EFormatted" );

            mountData->iMountType = TMountData::EFormat;

            if( !iMountTask->IsActive() )

                {

                iMountTask->SetPriority( KHarvesterPriorityMonitorPlugin );

                }

            iMountTask->StartUnmount( *mountData );

            }

        break;

        default:

            {

            _LIT( KLogPanic, "unknown state" );

            User::Panic( KLogPanic, KErrArgument );

            }

        break;

        }

    }

void CMMCMonitorPlugin::StartMonitoringAllMMCsL( RArray<TMdEMediaInfo>& aMedias )

    {

    WRITELOG( "CMMCMonitorPlugin::StartMonitoringAllMMCs" );

    TDriveInfo driveInfo;

    TDriveList driveList;

    TInt numOfElements( 0 );

    DriveInfo::GetUserVisibleDrives( iFs, 

                                                        driveList, 

                                                        numOfElements, 

                                                        KDriveAttExclude | KDriveAttRemote | KDriveAttRom );

#ifdef __WINSCW__

    TFileName systemPath = PathInfo::GetPath( PathInfo::EPhoneMemoryRootPath );

    TInt systemDriveNum( -1 );

    iFs.CharToDrive( systemPath[0], systemDriveNum );

#endif

    TInt i( 0 );

    TChar drive;

    const TInt acount = driveList.Length();

    const TInt mediaCount = aMedias.Count();

    TInt count( 0 );

    // set removed medias to not present

    for ( i = 0; i < mediaCount; i++ )

    	{

    	TInt driveNum(0);

    	iFs.CharToDrive( aMedias[i].iDrive, driveNum );

    	TUint32 mediaId = FSUtil::MediaID( iFs, driveNum );

    	if ( mediaId != aMedias[i].iMediaId ) 

    		{

    		iMdEClient->SetMediaL( aMedias[i].iMediaId, aMedias[i].iDrive, EFalse );

    		}

    	}

    for ( i = 0; i < acount; i++ )

        {

#ifdef __WINSCW__

        if ( i == systemDriveNum )

            {

            continue;

            }

#endif

        if ( driveList[i] > 0 )

            {

            TUint driveStatus( 0 );

            DriveInfo::GetDriveStatus( iFs, i, driveStatus ); 

            if ( driveStatus & DriveInfo::EDriveUsbMemory )

                {

                driveList[i] = 0;

                continue;

                }

            iFs.Drive( driveInfo, i );

            if ( ((driveInfo.iDriveAtt & KDriveAttRemovable) || (driveInfo.iDriveAtt & KDriveAttLogicallyRemovable) ||

                   (driveInfo.iType == EMediaHardDisk && driveStatus & DriveInfo::EDriveInternal) ) &&

                   (driveInfo.iType != EMediaNotPresent) )

                {

                count++; // DEBUG INFO

                iFs.DriveToChar( i, drive );

                // set media id to MdE

                TUint32 mediaId = FSUtil::MediaID( iFs, i );

                if ( mediaId != 0 )

                    {

                    iMdEClient->SetMediaL( mediaId, drive, ETrue );

                    AddNotificationPathL( drive );

                    }

                }

            }

        }

    WRITELOG1( "CMMCMonitorPlugin::StartMonitoringAllMMCs found %d MMCs", count );

    }