#ifndef NITRO_FS_ARCHIVE_H_
#define NITRO_FS_ARCHIVE_H_

#include "nitro.h"

#include "OS_thread.h"

struct FSFile;
struct FSArchive;

#define FS_ARCHIVE_NAME_LEN_MAX 3

#define	FS_ARCHIVE_FLAG_REGISTER	0x00000001
#define	FS_ARCHIVE_FLAG_LOADED		0x00000002
#define	FS_ARCHIVE_FLAG_TABLE_LOAD	0x00000004
#define	FS_ARCHIVE_FLAG_SUSPEND		0x00000008
#define	FS_ARCHIVE_FLAG_RUNNING		0x00000010
#define	FS_ARCHIVE_FLAG_CANCELING	0x00000020
#define	FS_ARCHIVE_FLAG_SUSPENDING	0x00000040
#define	FS_ARCHIVE_FLAG_UNLOADING	0x00000080
#define	FS_ARCHIVE_FLAG_IS_ASYNC	0x00000100
#define	FS_ARCHIVE_FLAG_IS_SYNC		0x00000200

typedef enum {
    FS_COMMAND_ASYNC_BEGIN = 0,
    FS_COMMAND_READFILE = FS_COMMAND_ASYNC_BEGIN,
    FS_COMMAND_WRITEFILE,
    FS_COMMAND_ASYNC_END,

    FS_COMMAND_SYNC_BEGIN = FS_COMMAND_ASYNC_END,
    FS_COMMAND_SEEKDIR = FS_COMMAND_SYNC_BEGIN,
    FS_COMMAND_READDIR,
    FS_COMMAND_FINDPATH,
    FS_COMMAND_GETPATH,
    FS_COMMAND_OPENFILEFAST,
    FS_COMMAND_OPENFILEDIRECT,
    FS_COMMAND_CLOSEFILE,
    FS_COMMAND_SYNC_END,

    FS_COMMAND_STATUS_BEGIN = FS_COMMAND_SYNC_END,
    FS_COMMAND_ACTIVATE = FS_COMMAND_STATUS_BEGIN,
    FS_COMMAND_IDLE,
    FS_COMMAND_SUSPEND,
    FS_COMMAND_RESUME,
    FS_COMMAND_STATUS_END,

    FS_COMMAND_INVALID
} FSCommandType;

typedef enum {
    FS_RESULT_SUCCESS = 0,
    FS_RESULT_FAILURE,
    FS_RESULT_BUSY,
    FS_RESULT_CANCELED,
    FS_RESULT_CANCELLED = FS_RESULT_CANCELED, // SDK alias
    FS_RESULT_UNSUPPORTED,
    FS_RESULT_ERROR,
    FS_RESULT_PROC_ASYNC,
    FS_RESULT_PROC_DEFAULT,
    FS_RESULT_PROC_UNKNOWN
}
FSResult;

typedef FSResult (*FS_ARCHIVE_READ_FUNC) (struct FSArchive *p, void *dst, u32 pos, u32 size);
typedef FSResult (*FS_ARCHIVE_WRITE_FUNC) (struct FSArchive *p, const void *src, u32 pos, u32 size);
typedef FSResult (*FS_ARCHIVE_PROC_FUNC) (struct FSFile *, FSCommandType);

typedef struct
{
    struct FSFile * prev;
    struct FSFile * next;
}
FSFileLink;

typedef struct FSArchive
{
    union
    {
        char ptr[4];
        u32 pack;
    } name;
    struct FSArchive * prev;
    struct FSArchive * next;
    OSThreadQueue sync_q;
    OSThreadQueue stat_q;
    u32 flag;
    FSFileLink list;
    u32 base;
    u32 fat;
    u32 fat_size;
    u32 fnt;
    u32 fnt_size;
    u32 fat_bak;
    u32 fnt_bak;
    void * load_mem;
    FS_ARCHIVE_READ_FUNC read_func;
    FS_ARCHIVE_WRITE_FUNC write_func;
    FS_ARCHIVE_READ_FUNC table_func;
    FS_ARCHIVE_PROC_FUNC proc;
    u32 proc_flag;
} FSArchive;

FSArchive * const FS_FindArchive(const char * path, int offset);

static inline BOOL FS_IsArchiveLoaded(volatile const FSArchive * p_arc)
{
    return (p_arc->flag & FS_ARCHIVE_FLAG_LOADED) ? TRUE : FALSE;
}

BOOL FSi_SendCommand(struct FSFile * file, FSCommandType command);
BOOL FSi_ExecuteSyncCommand(struct FSFile * file);

#endif //NITRO_FS_ARCHIVE_H_