// Copyright (c) 2008-2009 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:

//

#ifndef __CMESSAGECONVERTERMANAGER_H__

#define __CMESSAGECONVERTERMANAGER_H__

//  Header files

#include <e32base.h>// CBase

#include <e32std.h>	// TBuf

#include "f32file.h"

#include "msvdbadapter.h"

#include "msvmessagedbadapter.h"

// fwd declarations

class CMsvVersion0Version1Converter;

class CMsvVersion1Version2Converter;

class CMsvDBAdapter;

//constants

const TUid KUidMsvSmsMtm 			= { 0x1000102c };

const TUid KUidMsgTypePOP3			= {0x10001029};	// 268439593

const TUid KUidMsgTypeIMAP4			= {0x1000102A};	// 268439594

const TUid KUidMsgTypeSMTP			= {0x10001028};	// 268439592

//Literals

_LIT(KIndexFilePath,"\\Private\\1000484b\\Mail2\\Index");

/**

TConversionResumeStatus

A structure having fields as member variables that are required to mainatin and communicate

caonversion status information

@internalAll 

@released

*/

struct TConversionResumeStatus

	{

	TMsvId lastId;

	TMsvId serviceId;

	TInt sourceVersion;

	TInt targetVersion;

	TUid mtmId;

	TInt remainingCount;

	};

/**

MMsvMessageStoreConverter

A pure virtual class that acts a base class for different version message store conversion

classes. Any class that converts messages from one verion to another must inherit from this.

@internalAll 

@released

*/

class MMsvMessageStoreConverter

	{

public:

	virtual void ConvertMessageStoreL() = 0;

	virtual ~MMsvMessageStoreConverter()

		{

		};

	};

/**

CMessageConverterManager

This class manages the conversion of message store from one version to another.

Starts a new conversion or resumes a conversion from the last point.

Owns and initiates conversion of version 0 and version 1 message store.

@internalAll 

@released

*/

NONSHARABLE_CLASS (CMessageConverterManager) : public CBase 

	{

	public:

		static CMessageConverterManager* NewL(TDriveNumber aDriveNumber);

		static TInt StartConversion(TAny* aDrive);

		~CMessageConverterManager();

		void DoConversionL() ;

	private: 

		CMessageConverterManager(TDriveNumber aDriveNumber);

		void ConstructL();

		TBool ResumeConversionL();	

		void InitialiseMessageStoreConversionL();

		void RemoveIndexFileL(TDriveNumber aDrive);

		void RollBackVersion0Version1ConversionL();

		void RollBackVersion1Version2ConversionL();		

	private: 

		 RFs ifsSession;

		 CMsvDBAdapter* iDbAdapter;

		 CMsvMessageDBAdapter* iMessageDbAdapter;

		 CMsvVersion0Version1Converter* iIndexFileConverter;

		 CMsvVersion1Version2Converter* iMessageConverter;

		 TDriveNumber iDrive;

		 TInt iConversionVersion;

		 TConversionResumeStatus iResumeStatus;

		 TBool iConversionResume;

		 TBool iConversionTablePresent;

		 TBuf<64> iFilePath;

		 TFileName iDBFileName;

		 TInt iInitialVersion;

		 TInt iDeleteDatabase;

#if (defined SYMBIAN_MESSAGESTORE_UNIT_TESTCODE)	

	friend class CTestMessageConverterManager;

#endif

	};

#endif  // __CMESSAGECONVERTERMANAGER_H__