// SPDX-License-Identifier: MIT
// Author:  Giovanni Santini
// Mail:    giovanni.santini@proton.me
// Github:  @San7o

#include <stdio.h>
#include <fts.h>

int handle_file(char* filename)
{
  printf("Handling file %s\n", filename);
  return 0;
}

// Traverse [dir] recursively two levels deep and call handle_file on each file
int traverse_dir(char *dir)
{
  int err = 0;
  char *path_argv[] = { dir, NULL };
  FTSENT *file_entry = NULL;
  FTS *files = fts_open(path_argv, FTS_PHYSICAL | FTS_NOCHDIR, NULL);
  if (!files) return -1;

  while ((file_entry = fts_read(files)))
  {
    switch (file_entry->fts_info)
    {
    case FTS_D: // Directory
      if (file_entry->fts_level == 0)
      {
        //Top-level directory itself, continue
        continue;
      } else {
        // Skip descending into subdirectories
        //fts_set(files, file_entry, FTS_SKIP);
      }
      break;
    case FTS_F:  // Regular file
    case FTS_SL: // Symbolic link
    case FTS_DEFAULT:
      if (file_entry->fts_level <= 2) // Go only two levels deep
      {
        err = handle_file(file_entry->fts_path);
        if (err != 0)
        {
          goto exit;
        }
      }
      break;
    default:
      break;
    }
  }

 exit:
  if (fts_close(files) < 0 && err == 0)
    return -2;
  return err;
}