'use client';

import { useId } from 'react';
import type { Action, GameView } from '@/game/engine';
import { richeseCardDefinition } from '@/game/richese-cards';
import { Button } from './ui/button';
import { CardInspector } from './card-inspector';

/** Reasons use public timing only; exact card reservation checks stay on the server. */
function unavailableReason(game: GameView) {
  if (game.status !== 'playing')
    return 'Order changes are available during play.';
  if (game.truthtrance || game.response || game.phaseOpening ||
    (game.decision && !(game.phase === 8 && game.decision.kind === 'moritaniExtortion')))
    return 'Finish the current interaction before changing turn order.';
  if (game.phase === 8 && game.extortion?.pending)
    return 'Only an unanswered non-Moritani player can change their Extortion choice position. Earlier declines stay finished. Already-held first/last positions and committed cards are unavailable; you may still decline payment when your choice arrives.';
  if (game.phase === 3) {
    if (game.richeseAuction?.method === 'silent')
      return 'Silent bids are simultaneous. These controls do not change their tie order.';
    if (game.auction || game.richeseAuction?.method === 'normal')
      return 'No cyclic order change is available for your pending bid. A passed player waits for a new raise; the current high bidder has no pending bid. Already-held positions and committed cards are unavailable.';
    return 'No order change is available for you in this lot. You must not have bid or passed; discarding this card can open a hand slot, but a completed opportunity cannot be repeated. A card already committed elsewhere cannot be used.';
  }
  if (game.phase === 5)
    return 'Movement order can change only before the current combined shipment and movement turn begins. First requires all remaining turns to be unstarted. The Advanced Guild retains its next timing choice; an already granted current Guild turn cannot be displaced. A Karama-locked privilege stays locked. Completed turns, already-held positions and committed cards remain unavailable.';
  if (game.phase === 6)
    return game.battle
      ? game.battle.saphoTimingVersion === 1
        ? 'Become aggressor at a clean boundary before both players finish final battle actions. Already-held priority, a committed card, pending decisions and closed final opportunities are unavailable. Finish the current battle and its aftermath before changing remaining battle-choice order.'
        : 'This older battle retains its pre-plan opportunity, before declaring ready or committing a plan. Already-held priority and committed cards are unavailable. Finish the current battle and its aftermath before changing remaining battle-choice order.'
      : 'You need an unresolved battle and an available first or last position. Completed battles stay resolved, and a card committed elsewhere cannot be used.';
  return 'These controls support Once Around and cyclic bidding, movement order, remaining battle-choice order and aggressor priority. Other phase modes remain unfinished.';
}

export function JuiceOfSapho({
  game,
  act,
  busy,
}: {
  game: GameView;
  act: (action: Action) => void;
  busy: boolean;
}) {
  const id = useId();
  const me = game.players.find((p) => p.id === game.me);
  const card = me?.hand?.find(
    (c) => richeseCardDefinition(c)?.card.effect === 'juiceOfSapho',
  );
  if (!card) return null;
  const options = game.saphoOptions ?? [];
  return (
    <details className="my-4 min-w-0">
      <summary className="min-h-11 cursor-pointer py-3">
        Juice of Sapho: change order or become aggressor
      </summary>
      <div className="flex min-w-0 flex-col gap-4 py-3">
        <p>
          Choose one available order change, then discard Juice of Sapho. This
          does not grant an extra bid, shipment, movement or battle.
        </p>
        <CardInspector card={card} />
        {options.length ? (
          options.map((option) => {
            const once = option.scope === 'onceAround';
            const cyclic = option.scope === 'cyclicAuction';
            const battle = option.scope === 'battleOrder';
            const aggressor = option.scope === 'battleAggressor';
            const extortion = option.scope === 'extortion';
            return (
              <div
                key={`${option.scope}-${option.event}-${option.mode}`}
                className="flex min-w-0 flex-col gap-2"
              >
                <p>
                  {aggressor
                    ? 'Become this battle’s aggressor. You win ordinary ties; a Habbanya Stronghold advantage still takes precedence. The participants, committed plans and later battle choices stay unchanged.'
                    : extortion
                    ? `Take your Extortion choice ${option.mode} among unanswered players. Earlier declines and Moritani’s five-spice bank collection remain. You may decline instead of paying; the first actual three-spice payment ends all offers.`
                    : cyclic
                    ? `Bid ${option.mode} in the current cyclic lot. Provisional duration: this lot only. Existing bids, funding and passes stay committed. Later circuits use the changed cycle; the next lot returns to its normal opener.`
                    : once
                    ? `Bid ${option.mode} in the current Once Around lot. Each eligible player still has only one bidding opportunity.`
                    : battle
                      ? `Choose your remaining battles ${option.mode}. Completed battles stay resolved. This changes who chooses next, not the aggressor or tie advantage of a battle. Other players may still choose battles against you before your turn.`
                    : `Take the ${option.mode} remaining combined shipment and movement turn. Completed turns stay completed${option.mode === 'last' ? ', and the Guild cannot move behind you' : game.advanced && game.players.some(player => player.faction === 'guild' && player.id !== game.me) ? '. Provisional first priority: the Guild retains its next legal timing choice and may take its turn before yours; a Karama-locked privilege stays locked' : ''}.`}
                </p>
                <Button
                  className="min-h-11 whitespace-normal motion-reduce:transition-none"
                  disabled={busy}
                  onClick={() => {
                    if (!busy) act({ type: 'card', card: card.id, ...option });
                  }}
                >
                  {aggressor ? 'Become aggressor and discard Juice of Sapho' :
                    `${once || cyclic ? 'Bid' : battle ? 'Choose battles' : extortion ? 'Take your Extortion choice' : 'Take your movement turn'} ${option.mode} and discard Juice of Sapho`}
                </Button>
              </div>
            );
          })
        ) : (
          <p className="notice" id={`${id}-reason`}>
            {unavailableReason(game)}
          </p>
        )}
        <p className="text-sm">
          Late aggressor timing in new battles uses a provisional shared final opportunity. Older battles retain their pre-plan timing. Other phase modes are still unfinished.
        </p>
      </div>
    </details>
  );
}