import { quoteHarassWithdraw, type HarassWithdrawPreview } from '@/game/harass-withdraw';

export function harassWithdrawControlState(
  preview: HarassWithdrawPreview | null | undefined,
  selected: boolean,
  dial: number,
  support: number,
) {
  if (!selected) return { blocked: null, returned: null };
  if (!preview) return { blocked: 'Harass & Withdraw is not available in this battle.', returned: null };
  try {
    return { blocked: null, returned: quoteHarassWithdraw(preview, dial, support).returned };
  } catch (error) {
    return { blocked: error instanceof Error ? error.message : 'Choose a supported force commitment.', returned: null };
  }
}

export function HarassWithdrawGuide({
  preview, state,
}: {
  preview: HarassWithdrawPreview | null | undefined;
  state: ReturnType<typeof harassWithdrawControlState>;
}) {
  if (!preview) return null;
  return <section aria-label="Harass and Withdraw battle guidance" className="notice space-y-2">
    <h4>Harass &amp; Withdraw</h4>
    {preview.blocked || state.blocked
      ? <output className="block">{preview.blocked ?? state.blocked}</output>
      : state.returned
        ? <p>Return {state.returned.normal} ordinary and {state.returned.elite} elite undialed forces to reserves when plans resolve.</p>
        : <p>Select this card in either battle-card slot. Your undialed forces return to reserves.</p>}
    <p>Your leader can still die. An opponent’s successful traitor call cancels the withdrawal. Discard this card after use.</p>
  </section>;
}