// ============================================================================
//  Copyright (C) 2001-2010 by Jozef Starosczyk
//  ixen@copyhandler.com
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Library General Public License
//  (version 2) as published by the Free Software Foundation;
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU Library General Public
//  License along with this program; if not, write to the
//  Free Software Foundation, Inc.,
//  59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
// ============================================================================
/// @file  TLocalFilesystem.h
/// @date  2011/03/24
/// @brief Contains class responsible for accessing local filesystem.
// ============================================================================
#ifndef __TLOCALFILESYSTEM_H__
#define __TLOCALFILESYSTEM_H__

#include "libchcore.h"
#include "TPath.h"
#include "TBasePathData.h"
#include "TFileInfoFwd.h"
#include "IFilesystem.h"

BEGIN_CHCORE_NAMESPACE

class TAutoFileHandle;
class TLocalFilesystemFind;
class TLocalFilesystemFile;
class TSimpleDataBuffer;
class TFileTime;
class TOverlappedDataBuffer;

class LIBCHCORE_API TLocalFilesystem : public IFilesystem
{
public:
	TLocalFilesystem();
	virtual ~TLocalFilesystem();

	virtual bool PathExist(const TSmartPath& strPath) override;	// check for file or folder existence

	virtual bool SetFileDirectoryTime(const TSmartPath& pathFileDir, const TFileTime& ftCreationTime, const TFileTime& ftLastAccessTime, const TFileTime& ftLastWriteTime) override;
	virtual bool SetAttributes(const TSmartPath& pathFileDir, DWORD dwAttributes) override;

	virtual bool CreateDirectory(const TSmartPath& pathDirectory, bool bCreateFullPath) override;
	virtual bool RemoveDirectory(const TSmartPath& pathFile) override;
	virtual bool DeleteFile(const TSmartPath& pathFile) override;

	virtual bool GetFileInfo(const TSmartPath& pathFile, TFileInfoPtr& rFileInfo, const TBasePathDataPtr& spBasePathData = TBasePathDataPtr()) override;
	virtual bool FastMove(const TSmartPath& pathSource, const TSmartPath& pathDestination) override;

	virtual IFilesystemFindPtr CreateFinderObject(const TSmartPath& pathDir, const TSmartPath& pathMask) override;
	virtual IFilesystemFilePtr CreateFileObject() override;

	virtual EPathsRelation GetPathsRelation(const TSmartPath& pathFirst, const TSmartPath& pathSecond) override;

	virtual bool GetDynamicFreeSpace(const TSmartPath& path, unsigned long long& rullFree) override;

private:
	static TSmartPath PrependPathExtensionIfNeeded(const TSmartPath& pathInput);
	static UINT GetDriveData(const TSmartPath& spPath);
	DWORD  GetPhysicalDiskNumber(wchar_t wchDrive);

private:
#pragma warning(push)
#pragma warning(disable: 4251)
	std::map<wchar_t, DWORD> m_mapDriveLetterToPhysicalDisk;	// caches drive letter -> physical disk number
	boost::shared_mutex m_lockDriveLetterToPhysicalDisk;
#pragma warning(pop)

	friend class TLocalFilesystemFind;
	friend class TLocalFilesystemFile;
};

END_CHCORE_NAMESPACE

#endif