// 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:

// mw/remoteconn/mtpfws/mtpfw/dataproviders/dputility/src/cmtpknowledgehandler.cpp

#include <bautils.h> 

#include <centralrepository.h>

#include <mtp/cmtptypestring.h>

#include <mtp/cmtpobjectmetadata.h>

#include <mtp/cmtptypeobjectinfo.h>

#include <mtp/cmtptypeobjectproplist.h>

#include <mtp/mmtpdataproviderframework.h>

#include <mtp/mmtpobjectmgr.h>

#include <mtp/cmtptypefile.h>

#include <mtp/mtpdatatypeconstants.h>

#include "cmtpknowledgehandler.h"

// Class constants.

__FLOG_STMT(_LIT8(KComponent,"KwgObjHdler");)

const TInt KDateTimeMaxLength = 22;

const TInt KNameMaxLength = 255;

_LIT16(KEmptyContent16, "");

_LIT(KMTPKnowledgeObjDriveLocation, "c:");

_LIT(KMTPNoBackupFolder, "nobackup\\");	

_LIT(KMTPSlash, "\\");

_LIT(KMTPKnowledgeObjFileName, "mtp_knowledgeobj.dat");

_LIT(KMTPKnowledgeObjSwpFileName, "mtp_knowledgeobj.swp");

CKnowledgeObject* CKnowledgeObject::NewL(CRepository& aRepository)

	{

	CKnowledgeObject *self = new (ELeave) CKnowledgeObject(aRepository);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

CKnowledgeObject::CKnowledgeObject(CRepository& aRepository) : iRepository(aRepository)

	{

	}

CKnowledgeObject::~CKnowledgeObject()

	{

	__FLOG(_L8("~CKnowledgeObject - Entry")); 

	iDateModified.Close();

	iName.Close();

	__FLOG(_L8("~CKnowledgeObject - Exit")); 

	__FLOG_CLOSE;

	}

void CKnowledgeObject::ConstructL()

	{

	__FLOG_OPEN(KMTPSubsystem, KComponent);

	__FLOG(_L8("CKnowledgeObject Construct - Entry"));

	iKnowledgeObjectSize = KObjectSizeNotAvaiable;

	iDateModified.CreateL(KDateTimeMaxLength);

	iName.CreateL(KNameMaxLength);

	iLastAuthorProxyID.Set(KMTPUnInitialized64, KMTPUnInitialized64);

	iDirty = EBitFlagAll;

	__FLOG(_L8("CKnowledgeObject Construct - Exit"));

	}

void CKnowledgeObject::LoadL()

	{

	__FLOG(_L8("CKnowledgeObject LoadL - Entry"));

	// Load ObjectSize

	TInt objSize;

	User::LeaveIfError(iRepository.Get(ESize, objSize));

	iKnowledgeObjectSize = objSize;

	// Load DateModify

	iDateModified.Zero();

	User::LeaveIfError(iRepository.Get(EDateModified, iDateModified));

	// Load Name

	iName.Zero();

	User::LeaveIfError(iRepository.Get(EName, iName));

	// Load LastAuthorProxyID:

	TPtr8 writeBuf(NULL, 0); //walkaroud for the TMTPTypeUint128

	iLastAuthorProxyID.FirstWriteChunk(writeBuf);

	User::LeaveIfError(iRepository.Get(ELastAuthorProxyID, writeBuf));

	iDirty = EBitFlagNone;

	__FLOG(_L8("CKnowledgeObject LoadL - Exit"));

	return;

	}

void CKnowledgeObject::Clear()

	{

	__FLOG(_L8("CKnowledgeObject Clear - Entry"));

	iKnowledgeObjectSize = KObjectSizeNotAvaiable;

	iDateModified.Zero();

	iName.Zero();

	iLastAuthorProxyID.Set(KMTPUnInitialized64, KMTPUnInitialized64);

	iDirty = EBitFlagAll;

	__FLOG(_L8("CKnowledgeObject Clear - Exit"));

	}

void CKnowledgeObject::SetSize(TUint64 aSize)

	{

	iKnowledgeObjectSize = aSize;

	iDirty |= EBitFlagSize;

	}

void CKnowledgeObject::SetDateModified(const TDesC& /*aDateModified*/)

	{

	/**

	 * DateModifed will be auto updated when commit. If PC set this prop, it will be ignored.

	 * If someday PC want to force the DateModifed be saved, the following code piece should 

	 * be opened, and add check in commit when save DateModified.

	 *iDateModified.Copy(aDateModified);

	 *iDirty |= EBitFlagDateModified;

	**/

	}

void CKnowledgeObject::SetName(const TDesC& aName)

	{

	iName.Copy(aName);

	iDirty |= EBitFlagName;

	}

void CKnowledgeObject::SetLastAuthorProxyID(TUint64 aHigh, TUint64 aLow) 

	{

	iLastAuthorProxyID.Set(aHigh, aLow);

	iDirty |= EBitFlagLastAuthorProxyID;

	}

void CKnowledgeObject::CommitL()

	{

	__FLOG(_L8("CKnowledgeObject CommitL - Entry"));

	if (EBitFlagSize == (iDirty & EBitFlagSize))

		{

		// TUint64 -> TInt, some capability is lost, 

		// anyway, it's enough for knowledge object.   

		User::LeaveIfError(iRepository.Set(ESize, (TInt)iKnowledgeObjectSize));

		}

	if (EBitFlagName == (iDirty & EBitFlagName))

		{

		User::LeaveIfError(iRepository.Set(EName, iName));

		}

	if (EBitFlagLastAuthorProxyID == (iDirty & EBitFlagLastAuthorProxyID))

		{

		if (EMTPRespCodeOK != SetColumnType128Value(ELastAuthorProxyID, iLastAuthorProxyID))

			{

			User::Leave(KErrGeneral);

			}

		}

	// update DateModified to be the time of Commit

	RefreshDateModifed();

	User::LeaveIfError(iRepository.Set(EDateModified, iDateModified));

	iDirty = EBitFlagNone;

	__FLOG(_L8("CKnowledgeObject KnowledgeObject CommitL - Exit"));

	return;

	}

TMTPResponseCode CKnowledgeObject::SetColumnType128Value(TMTPKnowledgeStoreKeyNum aColumnNum, TMTPTypeUint128& aNewData)

	{

	__FLOG(_L8("CKnowledgeObject SetColumnType128ValueL - Entry"));

	TInt ret;

	TMTPResponseCode responseCode = EMTPRespCodeOK;

	TBuf8<KMTPTypeINT128Size>  data;

	data.FillZ(data.MaxLength());

	TUint64 upperValue = aNewData.UpperValue();

	TUint64 lowerValue = aNewData.LowerValue();

	/**

	Least significant 64-bit buffer offset.

	*/

	const TInt           KMTPTypeUint128OffsetLS = 0;

	/**

	Most significant 64-bit buffer offset.

	*/

	const TInt           KMTPTypeUint128OffsetMS = 8;

	memcpy(&data[KMTPTypeUint128OffsetMS], &upperValue, sizeof(upperValue));

	memcpy(&data[KMTPTypeUint128OffsetLS], &lowerValue, sizeof(lowerValue));

	ret = iRepository.Set(aColumnNum, data);

	if (KErrNone != ret)

		{

		responseCode = EMTPRespCodeGeneralError;

		}

	__FLOG_VA((_L8("CKnowledgeObject SetColumnType128ValueL - Exit with responseCode = 0x%04X"), responseCode));

	return responseCode;

	}

void CKnowledgeObject::RefreshDateModifed()

	{

	__FLOG(_L8("CKnowledgeObject RefreshDateModifed - Entry"));

	//get current time

	TTime now;	

	now.UniversalTime();

	_LIT(KFormat,"%F%Y%M%DT%H%T%SZ");

	iDateModified.Zero();

	now.FormatL(iDateModified, KFormat);

	__FLOG(_L8("CKnowledgeObject RefreshDateModifed - Exit"));

	return;

	}

EXPORT_C CMTPKnowledgeHandler* CMTPKnowledgeHandler::NewL(MMTPDataProviderFramework& aFramework, TUint16 aFormatCode, 

												CRepository& aReposotry, const TDesC& aKwgSuid)

	{

	CMTPKnowledgeHandler *self = new (ELeave) CMTPKnowledgeHandler(aFramework, aFormatCode, aReposotry, aKwgSuid);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C CMTPKnowledgeHandler::~CMTPKnowledgeHandler()

	{

	__FLOG(_L8("~CMTPKnowledgeHandler - Entry")); 

	delete iKnowledgeObj;

	delete iKnowledgeSwpBuffer;

	delete iCachedKnowledgeObject;

	__FLOG(_L8("~CMTPKnowledgeHandler - Exit"));

	__FLOG_CLOSE;

	}

CMTPKnowledgeHandler::CMTPKnowledgeHandler(MMTPDataProviderFramework& aFramework, TUint16 aFormatCode, 

										CRepository& aReposotry, const TDesC& aKwgSuid) :

	iFramework(aFramework), iRepository(aReposotry), iKnowledgeFormatCode(aFormatCode), iSuid(aKwgSuid)

	{

	}

void CMTPKnowledgeHandler::ConstructL()

	{

	__FLOG_OPEN(KMTPSubsystem, KComponent);

	__FLOG(_L8("Construct - Entry"));

	iFramework.Fs().PrivatePath(iKnowObjFileName);

	iKnowObjFileName.Insert(0, KMTPKnowledgeObjDriveLocation);

	iKnowObjFileName.Append(KMTPNoBackupFolder);

	iKnowObjFileName.Append(iSuid);

	iKnowObjFileName.Append(KMTPSlash);

	iKnowObjSwpFileName.Append(iKnowObjFileName);

	iKnowObjSwpFileName.Append(KMTPKnowledgeObjSwpFileName);

	iKnowObjFileName.Append(KMTPKnowledgeObjFileName);

	// Create knowledge object file directory if not exist.

	BaflUtils::EnsurePathExistsL(iFramework.Fs(), iKnowObjFileName);

	// Recover for previous failed transaction

	if(BaflUtils::FileExists(iFramework.Fs(), iKnowObjSwpFileName))

		{

		// In case DP received some object content

		User::LeaveIfError(iFramework.Fs().Delete(iKnowObjSwpFileName));

		}

	// create and load knowledge object properties

	iCachedKnowledgeObject = CKnowledgeObject::NewL(iRepository);

	iCachedKnowledgeObject->LoadL();

	__FLOG(_L8("ConstructL - Exit"));

	}

EXPORT_C void CMTPKnowledgeHandler::SetStorageId(TUint32 aStorageId)

	{

	iStorageID = aStorageId;

	}

void CMTPKnowledgeHandler::CommitL()

	{

	__FLOG(_L8("CommitL - Entry"));

	User::LeaveIfError(iRepository.StartTransaction(CRepository::EReadWriteTransaction));

	iRepository.CleanupCancelTransactionPushL();

	iCachedKnowledgeObject->CommitL();

	// Close all knowledge file and reset pointer.

	if (iKnowledgeObj)

		{

		delete iKnowledgeObj;

		iKnowledgeObj = NULL;

		}

	if (iKnowledgeSwpBuffer)

		{

		delete iKnowledgeSwpBuffer;

		iKnowledgeSwpBuffer = NULL;

		}

	if(BaflUtils::FileExists(iFramework.Fs(), iKnowObjSwpFileName))

		{

		// In case DP received some object content

		User::LeaveIfError(iFramework.Fs().Replace(iKnowObjSwpFileName, iKnowObjFileName));

		}

	// If swp file isn't exsited, that means 0 sized object received, need do nothing.

	TUint32 keyInfo;

	User::LeaveIfError(iRepository.CommitTransaction(keyInfo));

	CleanupStack::Pop(&iRepository);

	__FLOG(_L8("CommitL - Exit"));

	}

void CMTPKnowledgeHandler::CommitForNewObjectL(TDes& aSuid)

	{

	aSuid = iSuid;

	CommitL();

	}

void CMTPKnowledgeHandler::RollBack()

	{

	__FLOG(_L8("Rollback - Entry"));

	iCachedKnowledgeObject->Clear();

	TRAP_IGNORE(iCachedKnowledgeObject->LoadL());

	__FLOG(_L8("Rollback - Exit"));

	}

EXPORT_C void CMTPKnowledgeHandler::GetObjectSuidL(TDes& aSuid) const

	{

	__FLOG(_L8("GetObjectSuidL - Entry"));

	if(iCachedKnowledgeObject->Size() != KObjectSizeNotAvaiable)

		{

		aSuid.Append(iSuid);

		}

	__FLOG(_L8("GetObjectSuidL - Exit"));

	}

TMTPResponseCode CMTPKnowledgeHandler::SendObjectInfoL(const CMTPTypeObjectInfo& aObjectInfo, TUint32& aParentHandle, TDes& aSuid)

	{

	__FLOG(_L("SendObjectInfoL - Entry"));

	TMTPResponseCode responseCode = EMTPRespCodeOK;

	if (aParentHandle != KMTPHandleNone && aParentHandle != KMTPHandleNoParent)

		{

		responseCode = EMTPRespCodeInvalidParentObject;

		}

	else

		{

		//if there's a read error reread

		if(iCachedKnowledgeObject->IsDirty())

			{

			__FLOG(_L8("Warning: The cached knowledge is dirty"));

			iCachedKnowledgeObject->Clear();

			iCachedKnowledgeObject->LoadL();

			}

		//already has a knowledge object

		if(iCachedKnowledgeObject->Size() != KObjectSizeNotAvaiable)

			{

			responseCode = EMTPRespCodeAccessDenied;

			}

		else

			{

			iCachedKnowledgeObject->Clear();

			iCachedKnowledgeObject->SetSize(aObjectInfo.Uint32L(CMTPTypeObjectInfo::EObjectCompressedSize));

			// DateModified will be updated when commit.

			aSuid = iSuid;

			}

		}

	__FLOG(_L("SendObjectInfoL - Exit"));

	return responseCode;

	}

TMTPResponseCode CMTPKnowledgeHandler::SendObjectPropListL(TUint64 aObjectSize, const CMTPTypeObjectPropList& /*aObjectPropList*/, 

															TUint32& aParentHandle, TDes& aSuid)

	{

	__FLOG(_L8("SendObjectPropListL - Entry"));

	TMTPResponseCode responseCode = EMTPRespCodeOK;

	if (aParentHandle != KMTPHandleNone && aParentHandle != KMTPHandleNoParent)

		{

		responseCode = EMTPRespCodeInvalidParentObject;

		}

	else

		{

		//if there's a read error reread

		aParentHandle = KMTPHandleNoParent;

		if(iCachedKnowledgeObject->IsDirty())

			{

			__FLOG(_L8("Warning: The cached knowledge is dirty"));

			iCachedKnowledgeObject->Clear();

			iCachedKnowledgeObject->LoadL();

			}

		//already has a knowledge object

		if(iCachedKnowledgeObject->Size() != KObjectSizeNotAvaiable)

			{

			responseCode = EMTPRespCodeAccessDenied;

			}

		else

			{

			iCachedKnowledgeObject->Clear();

			iCachedKnowledgeObject->SetSize(aObjectSize);

			aSuid = iSuid;

			}

		}

	__FLOG(_L8("SendObjectPropListL - Exit"));

	return responseCode;

	}

TMTPResponseCode CMTPKnowledgeHandler::GetObjectPropertyL(const CMTPObjectMetaData& aObjectMetaData, 

																TUint16 aPropertyCode, CMTPTypeObjectPropList& aPropList)

	{

	__FLOG(_L8("GetObjectPropertyL - Entry"));

	TMTPResponseCode responseCode = EMTPRespCodeOK;

	CMTPTypeObjectPropListElement* propertyElement = NULL;

	TUint32 aHandle = aObjectMetaData.Uint(CMTPObjectMetaData::EHandle);

	if(iCachedKnowledgeObject->IsDirty())

		{

		__FLOG(_L8("Warning: The cached knowledge is dirty"));

		iCachedKnowledgeObject->LoadL();

		}

	switch (aPropertyCode)

		{

		case EMTPGenObjPropCodeParentID:

			{

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			propertyElement->SetUint32L(CMTPTypeObjectPropListElement::EValue, 0x0000);

			break;

			}

		case EMTPGenObjPropCodeName:

			{

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			if (iCachedKnowledgeObject->Name().Length() > 0)

				{

				propertyElement->SetStringL(CMTPTypeObjectPropListElement::EValue, iCachedKnowledgeObject->Name());

				}

			else

				{

				_LIT(KDefaultKwgObjName, "GenericObject01");

				propertyElement->SetStringL(CMTPTypeObjectPropListElement::EValue, KDefaultKwgObjName());	

				}

			break;

			}

		case EMTPGenObjPropCodePersistentUniqueObjectIdentifier:

			{

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			propertyElement->SetUint128L(CMTPTypeObjectPropListElement::EValue,

								iFramework.ObjectMgr().PuidL(aHandle).UpperValue(),

								iFramework.ObjectMgr().PuidL(aHandle).LowerValue());

			break;

			}

		case EMTPGenObjPropCodeObjectFormat:

			{

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			propertyElement->SetUint16L(CMTPTypeObjectPropListElement::EValue, iKnowledgeFormatCode);

			break;

			}

		case EMTPGenObjPropCodeObjectSize:

			{

			if (iCachedKnowledgeObject->Size() != KObjectSizeNotAvaiable)

				{

				propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

				propertyElement->SetUint64L(CMTPTypeObjectPropListElement::EValue, iCachedKnowledgeObject->Size());

				}

			break;

			}

		case EMTPGenObjPropCodeStorageID:

			{

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			propertyElement->SetUint32L(CMTPTypeObjectPropListElement::EValue, iStorageID);

			break;

			}

		case EMTPGenObjPropCodeObjectHidden:

			{

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			propertyElement->SetUint16L(CMTPTypeObjectPropListElement::EValue, 0x0001);

			break;

			}

		case EMTPGenObjPropCodeNonConsumable:

			{

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			propertyElement->SetUint8L(CMTPTypeObjectPropListElement::EValue, 0x01);

			break;

			}

		case EMTPGenObjPropCodeDateModified:

			{

			if(iCachedKnowledgeObject->DateModified().Length() == 0)

				{

				iCachedKnowledgeObject->RefreshDateModifed();

				}

			propertyElement = &(aPropList.ReservePropElemL(aHandle, aPropertyCode));

			propertyElement->SetStringL(CMTPTypeObjectPropListElement::EValue, iCachedKnowledgeObject->DateModified());

			break;

			}

		case EMTPSvcObjPropCodeLastAuthorProxyID:

			{

			if ((iCachedKnowledgeObject->LastAuthorProxyID().UpperValue() != KMTPUnInitialized64)

				 && (iCachedKnowledgeObject->LastAuthorProxyID().LowerValue() !=KMTPUnInitialized64))

				{