/*

* 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: Implementation of fotaserver component

* 	This is part of fotaapplication.

*

*/

#ifndef __FOTADISKSTORAGE_H_

#define __FOTADISKSTORAGE_H_

#include <s32file.h>

#include "fotastorage.h"

// CONSTANTTS

// const TInt KDummyFileSize(2000000);   // total of 2MB should be reserved for fota pkgs

#ifndef _FOTA_UNIT_TESTER

_LIT( KDummyFilePath, "c:\\private\\102072C4\\" );

#else

_LIT( KDummyFilePath, "c:\\private\\10009cf4\\" );

#endif 

_LIT( KDummyFileName, "reserved");  // dummy file name 

const TInt KFileReservationDefaultSize ( 5000000);

const TInt KFileChunkDefaultSize ( 120000 );

/*

* Implementation of fotastorage. This implementation

* directly stores the update package to user disk. 

* Private directory of the calling process will be used

* for storage.

*/

class CFotaDiskStorage : public CFotaStorage

{

    public:

    /**

     * NewL

     * @since   S60   v3.1

     * @param   none

     * @return  New instance

     */

      static CFotaDiskStorage* NewL();

    /**

     * Two phase Constructor

     * @since   S60   v3.1

     * @param   none

     * @return  none

     */

		void ConstructL();

    // From base classes

    /**

     * Two phase Constructor

     * @since   S60   v3.1

     * @param   none

     * @return  none

     */

		TInt AdjustDummyStorageL();

    /**

     * Opens stream to package file

     * @since   S60   v3.1

     * @param   pkgid	Package id

     * @param   aPkgStore	Stream to the file

     * @return  err

     */

    TInt OpenUpdatePackageStoreL(const TInt aPkgId,TInt aNewDummySize

                                  , RWriteStream*& aPkgStore);

    /**

     * Gets the update package size

     * @since   S60   v3.2

     * @param   aPkgid	Package id

     * @param   aSize	Size in bytes

     * @return  None

     */

     void GetDownloadedUpdatePackageSizeL(const TInt aPkgid, TInt& aSize);

    /**

     * Closes stream to package file

     * @since   S60   v3.1

     * @param   pkgid	Package id

     * @return  none

     */

		void UpdatePackageDownloadCompleteL(const TInt aPkgId);

    /**

     * Gets path to package

     * @since   S60   v3.1

     * @param   pkgid	Package id

     * @param   aPath	path to file

     * @return  none

     */

		void GetUpdatePackageLocationL(const TInt aPkgId, TDes8& aPath );

    /**

     * Gets present packages

     * @since   S60   v3.1

     * @param   aPackageIdList	List of package ids

     * @return  none

     */

		void GetUpdatePackageIdsL(TDes16& aPackageIdList);

    /**

     * Checks if there is space for pkg. If not (doesnt fit to filesystem)

     * returns needed space in aSize.

     * @since   S60   v3.1

     * @param   aSize		Space of pkg. On return, needed space.

     * @return  Whether there's free space

     */

		TFreeSpace IsPackageStoreSizeAvailableL(TInt& aSize);

    /**

     * Deletes update package

     * returns needed space in aSize.

     * @since   S60   v3.1

     * @param   apPkgid Package id

     * @return  none

     */

		void  DeleteUpdatePackageL (const TInt aPkgId);

    /**

     * Destructor

     * @since   S60   v3.1

     * @param   none

     * @return  none

     */

		virtual ~CFotaDiskStorage ();

public:

    /**

     * Stream to pkg file

     */

		RFileWriteStream    iFileWriteStream;

    /**

     * File server session

     */

		RFs                 iFs;

    /**

     * Size of reservation file. Configured via cenrep.

     */

		TInt                iDummySize;

    /**

     * Size of chunk used to separate update package file content from

     * reservation file.

     */

		TInt                iChunkSize;

private: // new functions

    /**

     * Constructor

     * @since   S60   v3.1

     * @param   none

     * @return  none

     */

    CFotaDiskStorage ();

    /**

     * Deletes the update package so that total space reservation file

     * stays the same (ie 5MB). 

     * @since   S60   v3.1

     * @param 	dummy Handle to reservation file

     * @param   aPkgId package file to be deleted

     * @param   aAlreadyAllocated Already allocated bytes by other pkg files

     * @return  none

     */

    void DoDeleteUpdatePackageL ( RFile& dummy, TInt aPkgId

                                      , TInt aAlreadyAllocated=0);

    /**

     * Checks how much space is allocated by package files

     * @since   S60   v3.1

     * @param 	aSwupdSize Size allocated by package files

     * @param   aDummySize Size allocated by reservation file

     * @return  none

     */

     void SpaceAllocatedBySWUPDFilesL( TInt& aSwupdSize, TInt& aDummySize);

};

#endif //__FOTADISKSTORAGE_H_