/** Visible note that a value is a suggestion and not something the user entered. */
export function PrefillNote({ id, source }: { id: string; source: string | undefined }) {
  if (!source) return null;
  return (
    <p id={`${id}-prefill`} className="text-xs font-medium text-muted-foreground">
      aus letzter Behandlung mit {source}
    </p>
  );
}

/** The control's aria-describedby, extended by the prefill note when one is shown. */
export function describedByWith(
  id: string,
  describedBy: string | undefined,
  source: string | undefined,
): string | undefined {
  return [describedBy, source ? `${id}-prefill` : undefined].filter(Boolean).join(" ") || undefined;
}