import assert from 'node:assert/strict';
import test from 'node:test';
import { botActions } from '../game/bots';
import { DIFFICULTIES } from '../game/bot-profiles';
import { coalitionOf } from '../game/coalition-alliance';
import { applyAction, createGame, joinGame, newPlayer, viewGame, type Action, type Game } from '../game/engine';
import { advanceShortAlliance, type ShortAllianceStep } from './fixture-short-alliance-victory';

const apply = (game: Game, actor: string, action: Action) => applyAction(game, actor, action);
function lobby(): Game {
  const game = createGame('ADVGROUPPREVIEW',newPlayer('at','Atreides','atreides'));
  joinGame(game,newPlayer('em','Emperor','emperor'));
  joinGame(game,newPlayer('ha','Harkonnen','harkonnen'));
  return game;
}
function prepare(variant: 'three' | 'three-short' | 'unlimited'): Game {
  let game = apply(lobby(),'at',{type:'rules',advanced:true});
  game = apply(game,'at',{type:'coalitionPreview',variant});
  for (const seat of game.players) game = apply(game,seat.id,{type:'ready'});
  assert.throws(() => apply(game,'at',{type:'start'}), /advanced|preview/i);
  return apply(game,'at',{type:'start',advancedPreview:true});
}
function accept(game: Game, actor: string): Game {
  const offer = game.coalitionState?.proposal; assert.ok(offer);
  return apply(game,actor,{type:'coalitionAnswer',event:offer.event,nexus:offer.nexus,
    turn:offer.turn,accept:true,expectedRevision:game.coalitionState!.revision});
}

void test('fresh Advanced classic group variants require explicit preview and retain their selected target', () => {
  for (const variant of ['three','three-short','unlimited'] as const) {
    const game = prepare(variant);
    assert.equal(game.status,'setup');
    assert.equal(game.advanced,true);
    assert.equal(game.advancedPreview,true);
    assert.equal(viewGame(game,'em').coalitionPreview,variant);
    assert.ok(game.coalitionState);
    assert.equal(game.coalitionState.variant,variant === 'three' ? undefined : variant);
    assert.deepEqual(game.coalitionState.groups,[]);
    assert.equal(game.coalitionState.proposal,null);
  }
});

/** Actual Advanced setup and first turn. Only unopened original Spice cards
 * are reordered to select a normal worm at the next Spice Blow. */
function pairAtNexus(): Game {
  let game = prepare('three-short');
  const actions: ShortAllianceStep[] = [];
  game = advanceShortAlliance(game, state => state.status === 'playing' && state.turn === 2 && state.phase === 0, actions);
  const worm = game.spiceDeck.findIndex(card => 'worm' in card && !card.greatMaker && !card.suppressed && !card.thumper);
  assert.ok(worm >= 0);
  const inventory = game.spiceDeck.map(card => JSON.stringify(card)).sort();
  game.spiceDeck.unshift(game.spiceDeck.splice(worm,1)[0]);
  assert.deepEqual(game.spiceDeck.map(card => JSON.stringify(card)).sort(),inventory);
  game = advanceShortAlliance(game, state => state.nexus && !state.spiceWindow && !state.spiceResolution &&
    !state.response && !state.decision && !state.truthtrance && !state.phaseOpening, actions);
  game = apply(game,'at',{type:'alliance',target:'em'});
  return apply(game,'em',{type:'alliance',target:'at'});
}

void test('a genuine Advanced preview reaches group formation, legal bots, and the next turn', () => {
  const original = pairAtNexus();
  const pair = coalitionOf(original.players,original.coalitionState,'at'); assert.ok(pair);
  assert.deepEqual(new Set(pair.members),new Set(['at','em']));
  let formed: Game | undefined;
  for (const difficulty of DIFFICULTIES) {
    const view = viewGame(original,'ha'); view.players.find(player => player.id === 'ha')!.bot = difficulty;
    const proposal = botActions(view).find(action => action.type === 'coalitionPropose'); assert.ok(proposal,difficulty);
    let game = apply(original,'ha',proposal);
    game = accept(game,'at'); game = accept(game,'em');
    assert.deepEqual(new Set(coalitionOf(game.players,game.coalitionState,'at')!.members),new Set(['at','em','ha']));
    assert.equal(game.coalitionState!.proposal,null);
    const progress = viewGame(game,'at').victoryProgress.find(row => row.player === 'at'); assert.ok(progress);
    assert.equal(progress.target,3);
    formed = game;
  }
  assert.ok(formed);
  for (const seat of formed.players)
    if (formed.nexus && !formed.ready.includes(seat.id)) formed = apply(formed,seat.id,{type:'ready'});
  const continued = advanceShortAlliance(formed,
    state => state.status === 'playing' && state.turn === 3 && state.phase === 0, []);
  assert.deepEqual(new Set(coalitionOf(continued.players,continued.coalitionState,'at')!.members),new Set(['at','em','ha']));
});