/*

* 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:

*

*/

#include <driveinfo.h>

#ifdef __WINSCW__

#include <pathinfo.h>

#endif

#include "harvesterlog.h"

#include "harvestercommon.h"

#include "mmcmonitorao.h"

#include "mmcmonitorplugin.h"

#include "fsutil.h"

CMMCMonitorAO* CMMCMonitorAO::NewL()

	{

	WRITELOG( "CMMCMonitorAO::NewL" ); // DEBUG INFO

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

	CleanupStack::PushL( self );

	self->ConstructL();

	CleanupStack::Pop( self );

	return self;

	}

void CMMCMonitorAO::ConstructL()

	{

	WRITELOG( "CMMCMonitorAO::ConstructL" ); // DEBUG INFO

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

	CActiveScheduler::Add( this );

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

	    {

	    iMediaIdList[i] = 0;

	    }

	}

CMMCMonitorAO::~CMMCMonitorAO()

	{

	WRITELOG( "CMMCMonitorAO::~CMMCMonitorAO" ); // DEBUG INFO

	StopMonitoring();

    iFs.Close();

	}

TBool CMMCMonitorAO::StartMonitoring( MMMCMonitorObserver& aObserver, RArray<TMdEMediaInfo>& aMedias )

	{

	WRITELOG( "CMMCMonitorAO::StartMonitoring" ); // DEBUG INFO

	iObserver = &aObserver;

    BuildDriveList();

    	{

    	TInt drive(0);

    	if ( err == KErrNone )

    		{

    		WRITELOG2( "CMMCMonitorAO::StartMonitoring - set drive %d mediaid to %d ", drive, aMedias[i].iMediaId );

    		iDriveList[drive] = 1; // fake value for startup (not KDriveAbsent)

        	iMediaIdList[drive] = aMedias[i].iMediaId;

    		}

    	}

	iPreviousDriveList.Zero();

	iPreviousDriveList.Copy( iDriveList );

#ifdef _DEBUG

	PrintAllLists();

#endif

	CompareDriveLists();

	StartNotify();

	return ETrue;

	}

void CMMCMonitorAO::StartNotify()

	{

	WRITELOG( "CMMCMonitorAO::StartNotify with ENotifyEntry" ); // DEBUG INFO

	if( !IsActive() )

		{

		iFs.NotifyChange( ENotifyEntry, iStatus ); 

		SetActive();                               

		}

	}

TBool CMMCMonitorAO::StopMonitoring()

	{

	WRITELOG( "CMMCMonitorAO::StopNotify" ); // DEBUG INFO

	Cancel();

	return ETrue;

	}

TBool CMMCMonitorAO::Resume()

	{

	WRITELOG( "CMMCMonitorAO::Resume" ); // DEBUG INFO

	iPreviousDriveList.Zero();

	iPreviousDriveList.Copy( iDriveList );

	BuildDriveList();

	CompareDriveLists();

	StartNotify();

	return ETrue;

	}

TBool CMMCMonitorAO::Pause()

	{

	WRITELOG( "CMMCMonitorAO::Pause" ); // DEBUG INFO

	return StopMonitoring();

	}

void CMMCMonitorAO::RunL()

	{

#ifdef _DEBUG

	WRITELOG1( "CMMCMonitorAO::RunL iStatus: %d", iStatus.Int() ); // DEBUG INFO

#endif

	if ( iStatus.Int() != KErrNone )

		{

		StartNotify();

		return;

		}

	iPreviousDriveList.Zero();

	iPreviousDriveList.Copy( iDriveList );

	BuildDriveList();

#ifdef _DEBUG

	PrintAllLists();

#endif

	CompareDriveLists();

#ifdef _DEBUG

	PrintAllLists();

#endif

	StartNotify();

	}

#ifdef _DEBUG

TInt CMMCMonitorAO::RunError( TInt aError )

#else

TInt CMMCMonitorAO::RunError( TInt )

#endif

	{

	WRITELOG1( "CMMCMonitorAO::RunError with error code: %d", aError ); // DEBUG INFO

	StartNotify();

	return KErrNone;

	}

void CMMCMonitorAO::DoCancel()

	{

	WRITELOG( "CMMCMonitorAO::DoCancel" ); // DEBUG INFO

	iFs.NotifyChangeCancel( iStatus );

	}

CMMCMonitorAO::CMMCMonitorAO() : CActive( KHarvesterPriorityMonitorPlugin ),

    iObserver( NULL )

	{

	}

void CMMCMonitorAO::BuildDriveList()

	{

	WRITELOG( "CMMCMonitorAO::BuildDriveList" ); // DEBUG INFO

	iDriveList.Zero();

    TInt numOfElements( 0 );

    TInt err = DriveInfo::GetUserVisibleDrives( 

    		iFs, iDriveList, numOfElements, 

			KDriveAttExclude | KDriveAttRemote | KDriveAttRom );

#ifdef __WINSCW__

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

    TInt systemDriveNum( -1 );

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

#endif

	if ( err != KErrNone )

		{

		WRITELOG1( "CMMCMonitorAO::BuildDriveList with error code: %d", err ); // DEBUG INFO

		return;

		}

	TDriveInfo driveInfo;

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

		{

#ifdef __WINSCW__

        if ( i == systemDriveNum )

            {

            iDriveList[i] = 0;

            continue;

            }

#endif

		if ( iDriveList[i] == KDriveAbsent )

			{

			continue;

			}

		err = iFs.Drive( driveInfo, i );

		if ( err != KErrNone )

			{

			WRITELOG1( "CMMCMonitorAO::BuildDriveList with error code: %d", err ); // DEBUG INFO

			}

		TUint driveStatus;

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

		if ( err != KErrNone )

			{

			WRITELOG1( "CMMCMonitorAO::BuildDriveList with error code2: %d", err ); // DEBUG INFO

			}

#ifdef _DEBUG

		if ( driveStatus & DriveInfo::EDriveInternal )

			{

			WRITELOG1("Drive %d is internal",i);

			}		

		WRITELOG2("Drive %d type %d",i,driveInfo.iType);

#endif

		if ( !( driveStatus & DriveInfo::EDriveRemovable ) )

			{

			WRITELOG1("Drive %d is not removable",i);

			// check if driver is internal hard disk

			if ( driveInfo.iType != EMediaHardDisk )

				{

				iDriveList[i] = 0;

				continue;

				}

			else

				{

				WRITELOG1("Drive %d is hard disk",i);

				}

			}

		if( driveStatus & DriveInfo::EDriveUsbMemory )

		    {

            iDriveList[i] = 0;

            continue;

		    }

		if ( driveInfo.iType == EMediaNotPresent )

			{

			WRITELOG1("Drive %d is not present",i);

			iDriveList[i] = KDriveAbsent;

			continue;

			}

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

		if ( mediaId == 0 )

			{

			WRITELOG1("Drive %d: MediaId is 0",i);

			iDriveList[i] = KDriveAbsent;

			}

		}

	}

void CMMCMonitorAO::CompareDriveLists()

	{

	WRITELOG( "CMMCMonitorAO::CompareDriveLists" ); // DEBUG INFO

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

		{

		if ( iDriveList[i] == KDriveAbsent && iPreviousDriveList[i] == KDriveAbsent )

			{	

			continue;

			}

		TChar chr;

		iFs.DriveToChar( i, chr );

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

		if ( iDriveList[i] > KDriveAbsent && iPreviousDriveList[i] > KDriveAbsent )

			{

			if ( iMediaIdList[i] != mediaId )

				{

				WRITELOG3( "CMMCMonitorAO::CompareDriveLists media changed %d, old=%d, new=%d", i, iMediaIdList[i], mediaId ); // DEBUG INFO

				// skip mount events if mediaId is 0

				if ( iMediaIdList[i] != 0 )

					{

					iObserver->MountEvent( chr, iMediaIdList[i], EDismounted );

					}

				if ( mediaId != 0 )

					{

					iObserver->MountEvent( chr, mediaId, EMounted );

					}

				iMediaIdList[i] = mediaId;

				}

			continue;

			}

		if ( iDriveList[i] == KDriveAbsent )

			{

			WRITELOG1( "CMMCMonitorAO::CompareDriveLists Dismounted %d", i ); // DEBUG INFO

			if ( mediaId )

				{

				iObserver->MountEvent( chr, mediaId, EDismounted );

				}

			else if ( iMediaIdList[i] )

				{

				iObserver->MountEvent( chr, iMediaIdList[i], EDismounted );

				}

			iMediaIdList[i] = 0;

			}

		if ( iPreviousDriveList[i] == KDriveAbsent )

			{

			WRITELOG1( "CMMCMonitorAO::CompareDriveLists Mounted %d", i ); // DEBUG INFO

			iObserver->MountEvent( chr, mediaId, EMounted );

			iMediaIdList[i] = mediaId;

			}

		}

	}

#ifdef _DEBUG

void CMMCMonitorAO::PrintAllLists()

	{

    WRITELOG( "CMMCMonitorAO::PrintAllLists()" );

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

		{

		if ( !(iPreviousDriveList[i] == 0 && iDriveList[i] == 0 && iMediaIdList[i] == 0) )

			{

		    TInt32 drive;

			drive = iPreviousDriveList[i];

		    WRITELOG1( "CMMCMonitorAO::PrintAllLists() - Previous drive element: %d", drive );

			drive = iDriveList[i];

		    WRITELOG1( "CMMCMonitorAO::PrintAllLists() - Current drive element : %d", drive );

			drive = iMediaIdList[i];

		    WRITELOG1( "CMMCMonitorAO::PrintAllLists() - Current MediaId       : %d", drive );

			}

		}

	}

#endif