// Copyright (c) 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:

//

/**

 @file

 @internalTechnology

*/

#include <f32file.h>

#include <bautils.h>

#include <pathinfo.h> // PathInfo

#include <sysutil.h>

#include <mtp/mmtpdataproviderframework.h>

#include <mtp/mmtpobjectmgr.h>

#include <mtp/mmtpstoragemgr.h>

#include <mtp/cmtpobjectmetadata.h>

#include <mtp/cmtptypearray.h>

#include <mtp/cmtptypestring.h>

#include "cmtpimagedpmoveobject.h"

#include "mtpimagedppanic.h"

#include "cmtpimagedpobjectpropertymgr.h"

#include "mtpimagedputilits.h"

#include "cmtpimagedpthumbnailcreator.h"

#include "cmtpimagedp.h"

/**

Verification data for the MoveObject request

*/    

const TMTPRequestElementInfo KMTPMoveObjectPolicy[] = 

    {

        {TMTPTypeRequest::ERequestParameter2, EMTPElementTypeStorageId, EMTPElementAttrWrite, 0, 0, 0},

        {TMTPTypeRequest::ERequestParameter3, EMTPElementTypeObjectHandle, EMTPElementAttrDir, 1, 0, 0}

    };

/**

Two-phase construction method

@param aPlugin	The data provider plugin

@param aFramework	The data provider framework

@param aConnection	The connection from which the request comes

@return a pointer to the created request processor object

*/     

MMTPRequestProcessor* CMTPImageDpMoveObject::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider)

    {

    CMTPImageDpMoveObject* self = new (ELeave) CMTPImageDpMoveObject(aFramework, aConnection,aDataProvider);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

/**

Destructor

*/	

CMTPImageDpMoveObject::~CMTPImageDpMoveObject()

    {

    delete iDest;

    delete iFileMan;

    delete iObjectInfo;

    }

/**

Standard c++ constructor

*/	

CMTPImageDpMoveObject::CMTPImageDpMoveObject(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider) :

    CMTPRequestProcessor(aFramework, aConnection, sizeof(KMTPMoveObjectPolicy)/sizeof(TMTPRequestElementInfo), KMTPMoveObjectPolicy),

    iDataProvider(aDataProvider)

    {

    }

/**

 Second phase constructor

*/

void CMTPImageDpMoveObject::ConstructL()

    {

    iFileMan = CFileMan::NewL(iFramework.Fs());

    iObjectInfo = CMTPObjectMetaData::NewL();

    }

TMTPResponseCode CMTPImageDpMoveObject::CheckRequestL()

    {

    TMTPResponseCode responseCode = CMTPRequestProcessor::CheckRequestL();

    if (EMTPRespCodeOK == responseCode)

        {

        TUint32 objectHandle = Request().Uint32(TMTPTypeRequest::ERequestParameter1);

        // Check whether object handle is valid

        responseCode = MTPImageDpUtilits::VerifyObjectHandleL(iFramework, objectHandle, *iObjectInfo);

        }

    else if(EMTPRespCodeInvalidObjectHandle == responseCode) //we only check the parent handle

        {

        responseCode = EMTPRespCodeInvalidParentObject;

        }

    return responseCode;

    }

/**

MoveObject request handler

*/		

void CMTPImageDpMoveObject::ServiceL()

    {

    TMTPResponseCode ret = MoveObjectL();

    SendResponseL(ret);

    }

/**

A helper function of MoveObjectL.

@param aNewFileName the new file name after the object is moved.

*/

TMTPResponseCode CMTPImageDpMoveObject::MoveFileL(const TDesC& aOldFileName, const TDesC& aNewFileName)	

    {

    TMTPResponseCode responseCode = EMTPRespCodeOK;    

    /**

     * File system process the move operation has two different ways:

     * 1. move object between the same storage.

     *    under this situation, move operatoin will triggers the EFsRename event by file system.

     *    then harvester of MdS will directly update the uri of mde object.      

     *    

     * 2. move object tetween the different storage.

     *    uder this situation, move operation will triggers four events by file system:

     *    a. EFsFileReplace event for old uri object.

     *    b. EFsFileReplace event for new uri object.

     *    c. EFsFileSetModified event for DateModified property of object.

     *    d. EFsDelete event for old uri object.

     *    

     *    then harvester of MdS will generate four actions for the above events:

     *    a. EMdsFileReplaced action for old uri object, this action is a null operation, because no object associates with old uri.

     *    b. EMdsFileReplaced action for new uri object, this action will add a new mde object into database and 

     *       put this action into queue of image plugin to wait for execution.

     *    c. EmdsFileModified action for new object, this action will update the DateModified property of mde object and

     *       put this action into queue of image plugin to wait for execution.

     *    d. EmdsFileDeleted action for old object, this action will directly delete old mde object from database.

     */

    /**

     * image dp should update object properties in database to avoid race condition with MdS,

     * if move faile, it should rollback.

     */

    TUint oldStoradId = iObjectInfo->Uint(CMTPObjectMetaData::EStorageId);

    TUint oldParentHandle = iObjectInfo->Uint(CMTPObjectMetaData::EParentHandle);    

    iObjectInfo->SetDesCL(CMTPObjectMetaData::ESuid, aNewFileName);

    iObjectInfo->SetUint(CMTPObjectMetaData::EStorageId, iStorageId);

    iObjectInfo->SetUint(CMTPObjectMetaData::EParentHandle, iNewParentHandle);

    iFramework.ObjectMgr().ModifyObjectL(*iObjectInfo);

    TInt ret = MoveImageFile(aOldFileName, *iDest);

    if (ret != KErrNone)

        {

        //rollback

        iObjectInfo->SetDesCL(CMTPObjectMetaData::ESuid, aOldFileName);

        iObjectInfo->SetUint(CMTPObjectMetaData::EStorageId, oldStoradId);

        iObjectInfo->SetUint(CMTPObjectMetaData::EParentHandle, oldParentHandle);

        iFramework.ObjectMgr().ModifyObjectL(*iObjectInfo);       

        responseCode = EMTPRespCodeGeneralError;        

        }

    return responseCode;

    }

/**

move object operations

@return A valid MTP response code.

*/

TMTPResponseCode CMTPImageDpMoveObject::MoveObjectL()

    {

    TMTPResponseCode responseCode = EMTPRespCodeOK;

    GetParametersL();

    RBuf newObjectName;

    newObjectName.CreateL(KMaxFileName);

    newObjectName.CleanupClosePushL();

    newObjectName = *iDest;

    TFileName oldFileName = iObjectInfo->DesC(CMTPObjectMetaData::ESuid);

    TParsePtrC fileNameParser(oldFileName);

    if((newObjectName.Length() + fileNameParser.NameAndExt().Length()) <= newObjectName.MaxLength())

        {

        newObjectName.Append(fileNameParser.NameAndExt());

        responseCode = CanMoveObjectL(oldFileName, newObjectName);

        }

    else

        {

        responseCode = EMTPRespCodeGeneralError;

        }

    if(responseCode == EMTPRespCodeOK)

        {

        responseCode = MoveFileL(oldFileName, newObjectName);

        }

    CleanupStack::PopAndDestroy(); // newObjectName.

    return responseCode;

    }

/**

Retrieve the parameters of the request

*/	

void CMTPImageDpMoveObject::GetParametersL()

    {

    __ASSERT_DEBUG(iRequestChecker, Panic(EMTPImageDpRequestCheckNull));

    TUint32 objectHandle  = Request().Uint32(TMTPTypeRequest::ERequestParameter1);

    iStorageId = Request().Uint32(TMTPTypeRequest::ERequestParameter2);

    iNewParentHandle  = Request().Uint32(TMTPTypeRequest::ERequestParameter3);

    if(iNewParentHandle == 0)

        {

        SetDefaultParentObjectL();

        }

    else	

        {

        CMTPObjectMetaData* parentObjectInfo = iRequestChecker->GetObjectInfo(iNewParentHandle);

        __ASSERT_DEBUG(parentObjectInfo, Panic(EMTPImageDpObjectNull));

        delete iDest;

        iDest = NULL;

        iDest = parentObjectInfo->DesC(CMTPObjectMetaData::ESuid).AllocL();

        }

    }

/**

Get a default parent object, ff the request does not specify a parent object, 

*/

void CMTPImageDpMoveObject::SetDefaultParentObjectL()

    {

    const CMTPStorageMetaData& storage = iFramework.StorageMgr().StorageL(iStorageId);

    delete iDest;

    iDest = NULL;

    iDest = storage.DesC(CMTPStorageMetaData::EStorageSuid).AllocL();

    iNewParentHandle = KMTPHandleNoParent;

    }

/**

Check if we can move the file to the new location

*/

TMTPResponseCode CMTPImageDpMoveObject::CanMoveObjectL(const TDesC& aOldName, const TDesC& aNewName) const

    {

    TMTPResponseCode result = EMTPRespCodeOK;

    TEntry fileEntry;

    TDriveNumber drive(static_cast<TDriveNumber>(iFramework.StorageMgr().DriveNumber(iStorageId)));

    TVolumeInfo volumeInfo;

    if(volumeInfo.iFree < fileEntry.FileSize())

        {

        result = EMTPRespCodeStoreFull;

        }

    else if (BaflUtils::FileExists(iFramework.Fs(), aNewName))			

        {

        result = EMTPRespCodeInvalidParentObject;

        }

    return result;	

    }

TInt CMTPImageDpMoveObject::MoveImageFile(const TDesC& aOldImageName, const TDesC& aNewImageName)

    {

    return iFileMan->Move(aOldImageName, aNewImageName);

    }

// End of file