/* ── Format bytes to human-readable size ── */
export function formatBytes(bytes: number): string {
  if (bytes === 0) return '0 B';
  const units = ['B', 'KB', 'MB', 'GB', 'TB'];
  const i = Math.min(Math.floor(Math.log(bytes) / Math.log(1024)), units.length - 1);
  const val = bytes / Math.pow(1024, i);
  return val < 10 ? val.toFixed(1) + ' ' + units[i] : Math.round(val) + ' ' + units[i];
}

/* ── Gateway link for CID ── */
export function gatewayLink(cid: string): string {
  return `https://ipfs.maos.dedyn.io/${cid}`;
}

/* ── Truncate CID for display ── */
export function truncateCid(cid: string, chars: number = 12): string {
  if (cid.length <= chars) return cid;
  return `${cid.slice(0, chars)}...`;
}