#include <pland/syscall.h>
#include <knob/format.h>
#include <knob/file.h>
#include <knob/user.h>

#define MAX_DIR_ENTRIES 20

void main(const char *arg) {
  uint8_t dn;
  const char *path = remove_prefix(arg, &dn);

  tell_user_sz("Directory info for ");
  tell_user_sz(*arg ? arg : "drive root");
  tell_user_sz("\n");

  _dir_info_entry infos[MAX_DIR_ENTRIES];
  uint8_t count = _enumerate_dir(dn, path, infos, MAX_DIR_ENTRIES);
  tell_user_sz(
    count == MAX_DIR_ENTRIES
    ? "Truncated to 20 entries.\n\n"
    : "\n"
  );

  uint32_t total_size = 0;

  if (!count)
    tell_user_sz("(none)\n");

  for (uint8_t i = 0; i < count; ++i) {
    tell_user_sz(infos[i].name);
    tell_user_sz(": ");
    if (infos[i].is_dir)
      tell_user_sz("dir");
    else {
      char nbuf[11];
      itosz(infos[i].size, nbuf);
      tell_user_sz(nbuf);
      tell_user_sz(" bytes");
      total_size += infos[i].size;
    }
    tell_user_sz("\n");
  }

  tell_user_sz("\nTotal size without subdirectories: ");
  char nbuf[11];
  itosz(total_size, nbuf);
  tell_user_sz(nbuf);
  tell_user_sz(" bytes\n");
}