#ifndef _KERNEL_FS_VFS_H
#define _KERNEL_FS_VFS_H

#include <libk/hash.h>
#include <libk/list.h>
#include <libk/std.h>
#include <m/fs_desc_buffer.h>
#include <sync/spin_lock.h>

#define VFS_OK        0
#define VFS_EXISTS    1
#define VFS_NOT_FOUND 2
#define VFS_BAD_PATH  3
#define VFS_OOB_ERROR 4

#define VFS_RAMDISKFS 0

struct vfs_mountpoint {
  char key[0x100];
  struct hash_node_link mount_table_link;
  int fs_type;
  spin_lock_t lock;
  struct {
    bool (*mount) (struct vfs_mountpoint* mountpoint);
    int (*describe) (struct vfs_mountpoint* mountpoint, const char* path,
                     struct fs_desc_buffer* desc);
    int (*read) (struct vfs_mountpoint* mountpoint, const char* path, uint8_t* buffer, size_t off,
                 size_t size);
  } driver_ops;
};

struct vfs_mount_table {
  struct hash_node_link* mountpoint_buckets[1024];
  spin_lock_t lock;
};

struct vfs_mountpoint* vfs_create_mountpoint (const char* key, int fs_type);
int vfs_describe (const char* mountpoint, const char* path, struct fs_desc_buffer* desc);
int vfs_read (const char* mountpoint, const char* path, uint8_t* buffer, size_t off, size_t size);
void vfs_init (void);

#endif // _KERNEL_FS_VFS_H