export function getErrorMessage(error: unknown): string {
  if (error instanceof Error) {
    return error.message;
  }
  if (typeof error === "string") {
    return error;
  }
  return String(error);
}

/** Returns age string like "3d", "12h", "5m" */
export function getAge(timestamp: Date | string | undefined): string {
  if (!timestamp) return "unknown";

  const now = new Date();
  const created = new Date(timestamp);
  const diff = now.getTime() - created.getTime();

  const seconds = Math.floor(diff / 1000);
  const minutes = Math.floor(seconds / 60);
  const hours = Math.floor(minutes / 60);
  const days = Math.floor(hours / 24);

  if (days > 0) return `${days}d`;
  if (hours > 0) return `${hours}h`;
  if (minutes > 0) return `${minutes}m`;
  return `${seconds}s`;
}