import assert from 'node:assert/strict';
import test from 'node:test';
import { applyAction, viewGame, type Game } from '../game/engine';
import { actChoamCharityFunding, advanceChoamCharityFunding, createChoamCharityFundingFixture,
  nextChoamCharityFundingStep } from './fixture-choam-charity-funding';

let fixture: ReturnType<typeof createChoamCharityFundingFixture> | undefined;
const source = () => fixture ??= createChoamCharityFundingFixture();
const owner = 'choam', observer = 'atreides';
const seat = (g: Game, id: string) => {
  const player = g.players.find(p => p.id === id); assert.ok(player); return player;
};
const step = (g: Game) => {
  const next = nextChoamCharityFundingStep(g); assert.ok(next);
  return actChoamCharityFunding(g, next.actor, next.action);
};
const rejected = (g: Game, id: string, action: {type:string; [key:string]:unknown}) => {
  const before = structuredClone(g);
  assert.throws(() => applyAction(g, id, action));
  assert.deepEqual(g, before);
};

/** Public Basic CHOAM/Atreides/Guild game, with the fixture's original deal
 * and genuine setup and Storm actions; stop at the actual first closing market. */
function firstMarket() {
  const g = advanceChoamCharityFunding(structuredClone(source().afterSetup), state =>
    state.turn === 1 && state.phase === 0 && state.decision?.kind === 'choamMarket');
  assert.deepEqual(g.expansions, ['choam']);
  assert.equal(g.advanced, false);
  assert.equal(g.choamMarket?.owner, owner);
  assert.equal(g.choamMarket.resume, 'storm');
  return g;
}
function optIn(g: Game) {
  return actChoamCharityFunding(g, owner, {type:'decision', done:true, skipMarketsThisTurn:true});
}

void test('a human CHOAM can waive remaining markets this turn and the native Storm continuation proceeds', () => {
  const before = firstMarket();
  assert.equal(viewGame(before, owner).choamMarketSkipAvailable, true);
  assert.equal(viewGame(before, owner).choamMarketSkipActive, false);
  assert.equal(viewGame(before, observer).choamMarketSkipAvailable, false);
  assert.equal(viewGame(before, observer).choamMarketSkipActive, false);
  const game = optIn(before);
  assert.equal(game.turn, 1);
  assert.equal(game.phase, 1);
  assert.equal(game.choamMarket, null);
  assert.equal(viewGame(game, owner).choamMarketSkipActive, true);
  assert.equal(viewGame(game, observer).choamMarketSkipActive, false);
  let next = JSON.parse(JSON.stringify(game)) as Game;
  for (let count = 0; next.turn === 1 && next.phase < 7 && count < 800; count++) {
    assert.notEqual(next.decision?.kind, 'choamMarket', `Unexpected market in phase ${next.phase}`);
    next = step(next);
  }
  assert.equal(next.turn, 1);
  assert.equal(next.phase, 7);
  assert.equal(viewGame(next, owner).choamMarketSkipActive, true);
  assert.notEqual(next.decision?.kind, 'choamMarket');
});

void test('waiver continuation does not inspect or depend on CHOAM’s hidden card faces', () => {
  const original = optIn(firstMarket());
  const changed = structuredClone(original);
  const choam = seat(changed, owner), guild = seat(changed, 'guild');
  assert.ok(choam.hand.length && guild.hand.length);
  // Swap two actual held cards, preserving all public counts and custody.
  [choam.hand[0], guild.hand[0]] = [guild.hand[0], choam.hand[0]];
  assert.deepEqual(viewGame(original, observer), viewGame(changed, observer));
  for (let game of [original, changed]) {
    for (let count = 0; game.phase === 1 && count < 100; count++) {
      assert.notEqual(game.decision?.kind, 'choamMarket');
      game = step(game);
    }
    assert.equal(game.phase, 2);
    assert.notEqual(game.decision?.kind, 'choamMarket');
  }
});

void test('only CHOAM can opt in or revoke, and revocation restores the next real market', () => {
  const market = firstMarket();
  rejected(market, observer, {type:'decision', done:true, skipMarketsThisTurn:true});
  rejected(market, owner, {type:'cancelChoamMarketSkip'});
  let game = optIn(market);
  rejected(game, observer, {type:'cancelChoamMarketSkip'});
  game = actChoamCharityFunding(game, owner, {type:'cancelChoamMarketSkip'});
  assert.equal(viewGame(game, owner).choamMarketSkipActive, false);
  rejected(game, owner, {type:'cancelChoamMarketSkip'});
  game = advanceChoamCharityFunding(game, state => state.phase === 1 && state.decision?.kind === 'choamMarket');
  assert.equal(game.choamMarket?.owner, owner);
  assert.equal(viewGame(game, owner).choamMarketSkipAvailable, true);
  game = actChoamCharityFunding(game, owner, {type:'decision', done:true});
  assert.equal(viewGame(game, owner).choamMarketSkipActive, false);
});

for (const mode of ['bot','autopilot'] as const) void test(
  `the standing waiver does not skip a market when CHOAM is under ${mode} control`, () => {
    let game = optIn(firstMarket());
    // A labelled staged controller handover; all game actions before it were native.
    seat(game, owner)[mode] = 'Easy';
    game = advanceChoamCharityFunding(game, state => state.phase === 1 && state.decision?.kind === 'choamMarket');
    assert.equal(game.choamMarket?.owner, owner);
  },
);

void test('the waiver expires at the next turn and preserves CHOAM’s final Mentat decision', () => {
  let game = optIn(firstMarket());
  game = advanceChoamCharityFunding(game, state => state.turn === 1 && state.decision?.kind === 'choamMentat');
  assert.equal(game.phase, 8);
  assert.equal(game.decision?.player, owner);
  game = advanceChoamCharityFunding(game, state => state.turn === 2 && state.phase === 0 && state.decision?.kind === 'choamMarket');
  assert.equal(viewGame(game, owner).choamMarketSkipActive, false);
  assert.equal(viewGame(game, owner).choamMarketSkipAvailable, true);
});