import assert from 'node:assert/strict';
import test from 'node:test';
import { createElement } from 'react';
import { renderToStaticMarkup } from 'react-dom/server';
import { FremenRevivalGrant } from '../components/fremen-revival-grant';
import { baseDeck } from '../game/cards';
import { coalitionOf, emptyCoalitionState } from '../game/coalition-alliance';
import { botActions } from '../game/bots';
import { applyAction, createGame, newPlayer, viewGame, type Action, type Game } from '../game/engine';

const send = (game: Game, id: string, action: Action) => applyAction(game, id, action);
const player = (game: Game, id: string) => game.players.find(seat => seat.id === id)!;

/** The game is staged at an actual Nexus because three-player alliances are
 * not yet selectable in the lobby. Pair formation and admission use the real
 * actions; tanks are then moved from reserves without creating forces. */
function fixture(group = true) {
  let game = createGame('GROUPFREMEN', newPlayer('f', 'Fremen', 'fremen'), false);
  game.players.push(newPlayer('a', 'Atreides', 'atreides'),
    newPlayer('h', 'Harkonnen', 'harkonnen'), newPlayer('g', 'Guild', 'guild'));
  Object.assign(game, {status:'playing', phase:1, turn:2, nexus:true, order:['f','a','h','g'],
    ready:[], storm:18, deck:baseDeck(), response:null, decision:null, phaseOpening:null});
  game.coalitionState = emptyCoalitionState();
  game = send(game, 'f', {type:'alliance', target:'a'});
  game = send(game, 'a', {type:'alliance', target:'f'});
  if (group) {
    const pair = coalitionOf(game.players, game.coalitionState, 'f'); assert.ok(pair);
    game = send(game, 'f', {type:'coalitionPropose', groupId:pair.id, entrant:'h',
      expectedRevision:game.coalitionState!.revision});
    for (const id of ['a','h']) {
      const proposal = game.coalitionState!.proposal!;
      game = send(game, id, {type:'coalitionAnswer', event:proposal.event, nexus:proposal.nexus,
        turn:proposal.turn, accept:true, expectedRevision:game.coalitionState!.revision});
    }
    assert.deepEqual(coalitionOf(game.players, game.coalitionState, 'f')!.members, ['a','f','h']);
  }
  Object.assign(game, {phase:4, nexus:false, ready:[], response:null, decision:null});
  for (const seat of game.players) {
    seat.forces = {}; seat.reserves = 20; seat.tanks = 0; seat.spice = 10;
    seat.hand = []; seat.traitors = []; seat.traitorChoices = [];
  }
  for (const id of ['a','h']) {
    player(game, id).reserves = 16;
    player(game, id).tanks = 4;
  }
  const index = game.deck.findIndex(card => card.effect === 'karama'); assert.ok(index >= 0);
  const [karama] = game.deck.splice(index, 1);
  player(game, 'g').hand.push(karama);
  return {game, karama};
}
function passResponses(game: Game): Game {
  for (let count = 0; game.response && count < 24; count++) {
    const next = game.players.find(seat => !game.response!.passed.includes(seat.id));
    assert.ok(next, 'Each response has a remaining eligible player.');
    game = send(game, next.id, {type:'passResponse'});
  }
  assert.equal(game.response ?? null, null);
  return game;
}
function reject(game: Game, id: string, action: Action) {
  const before = structuredClone(game);
  assert.throws(() => send(game, id, action));
  assert.deepEqual(game, before);
}

void test('Fremen grants each selected group ally three free force revivals', () => {
  let {game} = fixture();
  for (const ally of ['a','h']) {
    const originalSpice = player(game, ally).spice;
    const pending = send(game, 'f', {type:'grantRevival', target:ally});
    assert.equal(pending.response?.kind, 'fremenRevivalGrant');
    assert.equal(pending.response?.recipient, ally);
    assert.deepEqual(pending.response?.fremenGrant, {turn:2, owner:'f', recipient:ally});
    assert.equal(pending.freeRevival.includes(ally), false);
    game = passResponses(pending);
    assert.equal(game.freeRevival.filter(id => id === ally).length, 1);
    assert.equal(viewGame(game, ally).revival.freeRemaining, 3);
    game = passResponses(send(game, ally, {type:'revive', amount:3, elite:0}));
    assert.equal(player(game, ally).spice, originalSpice);
    assert.equal(player(game, ally).tanks, 1);
    assert.equal(player(game, ally).reserves, 19);
    assert.equal(player(game, ally).freeForcesRevived, 3);
    reject(game, 'f', {type:'grantRevival', target:ally});
  }
});

void test('group grant rejects missing, non-allied and self targets as well as wrong actors and phases', () => {
  const {game} = fixture();
  reject(game, 'f', {type:'grantRevival'});
  for (const target of ['f','g','missing']) reject(game, 'f', {type:'grantRevival', target});
  reject(game, 'a', {type:'grantRevival', target:'h'});
  game.phase = 3;
  reject(game, 'f', {type:'grantRevival', target:'a'});
});

void test('group grant rejects unsupported Advanced play and cannot retarget a pending source', () => {
  const {game} = fixture();
  const advanced = structuredClone(game);
  advanced.advanced = true;
  assert.equal(viewGame(advanced, 'f').fremenGroupRevivalGrant, null);
  reject(advanced, 'f', {type:'grantRevival', target:'a'});
  const pending = send(game, 'f', {type:'grantRevival', target:'a'});
  pending.response!.recipient = 'h';
  reject(pending, 'g', {type:'passResponse'});
});

void test('Karama prevents only the selected group grant and leaves the other ally eligible', () => {
  const initial = fixture();
  let {game} = initial;
  const {karama} = initial;
  game = send(game, 'f', {type:'grantRevival', target:'a'});
  game = passResponses(send(game, 'g', {type:'card', mode:'cancel', card:karama.id}));
  assert.equal(game.freeRevival.includes('a'), false);
  assert.deepEqual(game.revivalRules?.fremenGrantBlocked, ['a']);
  assert.equal(game.discard.filter(card => card.id === karama.id).length, 1);
  reject(game, 'f', {type:'grantRevival', target:'a'});
  game = passResponses(send(game, 'f', {type:'grantRevival', target:'h'}));
  assert.equal(game.freeRevival.includes('h'), true);
  assert.equal(game.freeRevival.includes('a'), false);
  assert.equal(viewGame(game, 'a').revival.freeRemaining, 2);
  assert.equal(viewGame(game, 'h').revival.freeRemaining, 3);
});

void test('pair Fremen grant retains its implicit target and native Karama response', () => {
  let {game} = fixture(false);
  const pending = send(game, 'f', {type:'grantRevival'});
  assert.equal(pending.response?.recipient, 'a');
  game = passResponses(pending);
  assert.equal(game.freeRevival.includes('a'), true);
  assert.equal(viewGame(game, 'a').revival.freeRemaining, 3);
  reject(game, 'f', {type:'grantRevival'});
});

void test('a Medium Fremen bot offers a legal targeted group grant', () => {
  const {game} = fixture();
  const view = viewGame(game, 'f');
  view.players.find(seat => seat.id === 'f')!.bot = 'Medium';
  const grant = botActions(view).find(action => action.type === 'grantRevival');
  assert.ok(grant);
  assert.ok(grant.target === 'a' || grant.target === 'h');
  const pending = send(game, 'f', grant);
  assert.equal(pending.response?.recipient, grant.target);
  assert.equal(passResponses(pending).freeRevival.includes(grant.target as string), true);
});

void test('the actual group view renders both named grant controls only to Fremen', () => {
  const {game} = fixture();
  const own = viewGame(game, 'f');
  assert.deepEqual(own.fremenGroupRevivalGrant?.map(entry => entry.recipient).sort(), ['a','h']);
  const ownMarkup = renderToStaticMarkup(createElement(FremenRevivalGrant, {
    game:own, busy:false, act() {},
  }));
  assert.match(ownMarkup, /Grant Atreides free revival/);
  assert.match(ownMarkup, /Grant Harkonnen free revival/);
  assert.doesNotMatch(ownMarkup, /disabled=""/);
  const observer = viewGame(game, 'g');
  assert.equal(observer.fremenGroupRevivalGrant, null);
  assert.equal(renderToStaticMarkup(createElement(FremenRevivalGrant, {
    game:observer, busy:false, act() {},
  })), '');
});