#ifndef _REVOLUTION_FS_H_
#define _REVOLUTION_FS_H_

#include <revolution/types.h>
#include <revolution/private/iostypes.h>
#include <revolution/private/iosrestypes.h>

#ifdef __cplusplus
extern "C" {
#endif

#define ISFS_ERROR_OK               0
#define ISFS_ERROR_INVALID          -101
#define ISFS_ERROR_ACCESS           -102
#define ISFS_ERROR_CORRUPT          -103
#define ISFS_ERROR_NOTREADY         -104
#define ISFS_ERROR_EXISTS           -105
#define ISFS_ERROR_NOEXISTS         -106
#define ISFS_ERROR_MAXFILES         -107
#define ISFS_ERROR_MAXBLOCKS        -108
#define ISFS_ERROR_MAXFD            -109
#define ISFS_ERROR_MAXDEPTH         -110
#define ISFS_ERROR_OPENFD           -111
#define ISFS_ERROR_BADBLOCK         -112
#define ISFS_ERROR_ECC              -113
#define ISFS_ERROR_ECC_CRIT         -114
#define ISFS_ERROR_NOTEMPTY         -115
#define ISFS_ERROR_HMAC             -116
#define ISFS_ERROR_UNKNOWN          -117
#define ISFS_ERROR_BUSY             -118
#define ISFS_ERROR_SHUTDOWN         -119

#define ISFS_INODE_NAMELEN 12

typedef s32 ISFSError;
typedef void (*ISFSCallback) (ISFSError, void *ctxt);

typedef struct {
    u32 blockSize;
    u32 freeBlocks;
    u32 occupiedBlcocks;
    u32 badBlocks;
    u32 reservedBlocks;
    u32 freeInodes;
    u32 occupedInodes;
} ISFSStats;

typedef struct {
    u32 size;
    u32 offset;
} ISFSFileStats;

typedef struct {
    IOSUid ownerId;
    IOSGid groupId;
    u8 path[64];
    u8 ownerAccess;
    u8 groupAccess;
    u8 othersAccess;
    u8 attr;
} ISFSPathAttrArgs;

typedef struct {
    u8 path1[64];
    u8 path2[64];
} ISFSPathsArgs;

ISFSError ISFS_OpenLib(void);
s32 ISFS_CreateDir(const u8* dname, u32 dirAttr, u32 ownerAcc, u32 groupAcc, u32 othersAcc);
s32 ISFS_CreateDirAsync(const u8* dname, u32 dirAttr, u32 ownerAcc, u32 groupAcc, u32 othersAcc, ISFSCallback cb, void* fsCtxt);
s32 ISFS_ReadDir(const u8* dname, u8* nameList, u32* num);
s32 ISFS_ReadDirAsync(const u8* dname, u8* nameList, u32* num, ISFSCallback cb, void* fsCtxt);
s32 ISFS_GetAttr(const u8* name, IOSUid* ownerId, IOSGid* groupId, u32* attr, u32* ownerAcc, u32* groupAcc, u32* othersAcc);
s32 ISFS_GetAttrAsync(const u8* name, IOSUid* ownerId, IOSGid* groupId, u32* attr, u32* ownerAcc, u32* groupAcc, u32* othersAcc, ISFSCallback cb, void* fsCtxt);
s32 ISFS_Delete(const u8* name);
s32 ISFS_DeleteAsync(const u8* name, ISFSCallback cb, void* fsCtxt);
s32 ISFS_Rename(const u8* oldName, const u8* newName);
s32 ISFS_RenameAsync(const u8* oldName, const u8* newName, ISFSCallback cb, void* fsCtxt);
s32 ISFS_GetUsage(const u8* dname, u32* nblocks, u32* ninodes);
s32 ISFS_CreateFile(const u8* fname, u32 fileAttr, u32 ownerAcc, u32 groupAcc, u32 othersAcc);
s32 ISFS_CreateFileAsync(const u8* fname, u32 fileAttr, u32 ownerAcc, u32 groupAcc, u32 othersAcc, ISFSCallback cb, void* fsCtxt);
IOSFd ISFS_Open(const u8* fname, u32 access);
IOSFd ISFS_OpenAsync(const u8* fname, u32 access, ISFSCallback cb, void* fsCtxt);
s32 ISFS_GetFileStats(IOSFd fd, ISFSFileStats* stats);
s32 ISFS_GetFileStatsAsync(IOSFd fd, ISFSFileStats* stats, ISFSCallback cb, void* fsCtxt);
s32 ISFS_Seek(IOSFd fd, s32 offset, u32 whence);
s32 ISFS_SeekAsync(IOSFd fd, s32 offset, u32 whence, ISFSCallback cb, void* fsCtxt);
s32 ISFS_Read(s32 fd, u8* pBuffer, u32 bufSize);
s32 ISFS_ReadAsync(IOSFd fd, u8* buf, u32 size, ISFSCallback cb, void* fsCtxt);
s32 ISFS_Write(IOSFd fd, const u8* buf, u32 size);
s32 ISFS_WriteAsync(IOSFd fd, const u8* buf, u32 size, ISFSCallback cb, void* fsCtxt);
s32 ISFS_Close(IOSFd fd);
s32 ISFS_CloseAsync(IOSFd fd, ISFSCallback cb, void* fsCtxt);
s32 ISFS_ShutdownAsync(ISFSCallback cb, void* fsCtxt);

#ifdef __cplusplus
}
#endif

#endif // _REVOLUTION_FS_H_