#ifndef FILESYSTEM_H
#define FILESYSTEM_H
#include "tier0/platform.h"
#include "tier1/utlbuffer.h"
#include "tier1/utlstring.h"
#include "interface.h"

enum EFileOptions
{
	IFILE_READ,
	IFILE_WRITE,
	IFILE_APPEND
};

typedef struct FileHandle_s
{
	FILE *file;
	FILE *parent;
	EFileOptions options;
	size_t nSize;
	size_t nOffset;
	size_t nPtr;
} *FileHandle_t;

interface IFileSystem: public IInterface
{
public:
	virtual void InitFilesystem( void ) = 0;
	virtual void AddGameDirectory( const char *psz ) = 0;
	virtual bool LoadPackFile( const char *szFilename ) = 0;
	virtual void CreatePath( const char *szPath ) = 0;
	virtual FileHandle_t Open( const char *szFilename, EFileOptions options ) = 0;
	virtual void Close( FileHandle_t file ) = 0;
	virtual size_t Size( FileHandle_t file ) = 0;
	virtual size_t Read( FileHandle_t file, void *pOutput, size_t nSize) = 0;
	virtual size_t ReadLine( FileHandle_t file, void *pOutput, size_t nSize) = 0;
	virtual size_t Write( FileHandle_t file, void *pInput, size_t nSize) = 0;
	virtual size_t Seek( FileHandle_t file, size_t nSize) = 0;
	virtual size_t Tell( FileHandle_t file, size_t nSize) = 0;
	virtual size_t fprintf( FileHandle_t file, const char *szFormat, ...) = 0;
};

IFileSystem *FileSystem();

#endif