#include <stdlib.h>
#include <string.h>
#include <tty.h>

#include <fs/vfs.h>

/* we use something similar to the Linux kernel in terms of a VFS system */

#define MAX_FDS 64

struct inode {
  size_t size;
  int permissions;
  void *fs_data; /* FS-specific */
};

struct file_ops {
  int (*read)(struct file*, char*, size_t);
  int (*write)(struct file*, const char*, size_t);
};

struct file {
  struct inode* f_inode;
  size_t f_offset;
  size_t f_refcount;
  const struct file_ops f_ops;
};



struct fdtable {
  struct file* fds[MAX_FDS];
};



int vfs_handle_stdout(struct file* __f, const char* __s, size_t __l)
{
  (void) __f;
  terminal_write(__s, __l);

  return 0;
}

struct fdtable* vfs_init_kernel_fdtable(void)
{
#if 0
  struct fdtable* ft = malloc(sizeof(struct fdtable));
  struct file* _stdout = malloc(sizeof(struct file));
  struct file* _stdin = malloc(sizeof(struct file));
  
  if (!ft || !_stdin || !_stdout)
  {
    return NULL;
  }
  
  _stdout->f_inode = NULL;
  _stdout->f_offset = 0;
  _stdout->f_refcount = 1;
  _stdout->f_ops = { .read = NULL, .write = vfs_handle_stdout };
#endif
  return NULL;
}

int init_vfs(int argc, char** argv)
{
  (void) argc;
  (void) argv;
  
  return 0;
}



/*
  This is being written as a test.
  This has no affect on aaand my CPU is at 87 degrees Celsius and /usr/bin/gnome-shell is at 115% CPU utilization.
  Just by writing that.
  wow.
  and now my CPU fan is going nuts.
  
  --update: now it works. I had to go back to nouveau instead of the proprietary nVidia®©™ drivers..

  --update: I wrote what months ago. now is 3/12/2026, I don't even remember what was going on well. wow.
*/