import { describe, expect, it } from 'vitest';
import { resultBadge, seatMedal } from './result';
import type { GameView, Seat } from './model';

const seat = (s: number, accountId: string, score: number, isWinner = false, resigned = false): Seat => ({
  seat: s,
  accountId,
  displayName: accountId,
  score,
  hintsUsed: 0,
  isWinner,
  resigned,
});

function game(seats: Seat[], status = 'finished', toMove = 0): GameView {
  return {
    id: 'g',
    variant: 'scrabble_en',
    dictVersion: 'v1',
    vsAi: false,
    unreadChat: false,
    unreadMessages: false,
    status,
    players: seats.length,
    toMove,
    turnTimeoutSecs: 0,
    multipleWordsPerTurn: true,
    moveCount: 0,
    endReason: '',
    lastActivityUnix: 0,
    seats,
  };
}

describe('resultBadge', () => {
  it('active: your move vs opponent', () => {
    const g = game([seat(0, 'me', 5), seat(1, 'a', 3)], 'active', 0);
    expect(resultBadge(g, 'me')).toEqual({ key: 'result.yourMove', emoji: '🟢' });
    expect(resultBadge({ ...g, toMove: 1 }, 'me').key).toBe('result.oppMove');
  });

  it('open (awaiting an opponent) reads as in-progress, not a finished result', () => {
    const g = game([seat(0, 'me', 0), seat(1, '', 0)], 'open', 0);
    expect(resultBadge(g, 'me')).toEqual({ key: 'result.yourMove', emoji: '🟢' });
    expect(resultBadge({ ...g, toMove: 1 }, 'me').key).toBe('result.oppMove');
  });

  it('finished two-player: victory / defeat / draw', () => {
    expect(resultBadge(game([seat(0, 'me', 300, true), seat(1, 'a', 200)]), 'me')).toEqual({
      key: 'result.victory',
      emoji: '🏆',
    });
    expect(resultBadge(game([seat(0, 'me', 200), seat(1, 'a', 300, true)]), 'me')).toEqual({
      key: 'result.defeat',
      emoji: '🥈',
    });
    expect(resultBadge(game([seat(0, 'me', 200), seat(1, 'a', 200)]), 'me')).toEqual({
      key: 'result.draw',
      emoji: '🏅',
    });
  });

  it('finished two-player: a 0-0 resignation is a defeat, not a score-tied win', () => {
    // The opponent won by resignation (isWinner) although neither side scored — the lobby
    // must read this as a loss, matching the game-detail screen (regression).
    expect(resultBadge(game([seat(0, 'me', 0), seat(1, 'a', 0, true)]), 'me')).toEqual({
      key: 'result.defeat',
      emoji: '🥈',
    });
  });

  it('finished four-player: places by score', () => {
    const last = game([seat(0, 'me', 100), seat(1, 'a', 400, true), seat(2, 'b', 300), seat(3, 'c', 200)]);
    expect(resultBadge(last, 'me')).toEqual({ key: 'result.place4', emoji: '🏅' });
    const second = game([seat(0, 'me', 300), seat(1, 'a', 400, true), seat(2, 'b', 200), seat(3, 'c', 100)]);
    expect(resultBadge(second, 'me')).toEqual({ key: 'result.place2', emoji: '🥈' });
  });

  it('tie for the lead (3-4p): a shared victory for the leaders, a placed finish for those below', () => {
    // The reported case, viewer-side: two seats tie for the lead (-8), one is last (-14) — no single
    // winner(), so this must NOT read as a full draw for everyone.
    expect(resultBadge(game([seat(0, 'me', -8), seat(1, 'a', -14), seat(2, 'b', -8)]), 'me')).toEqual({ key: 'result.victory', emoji: '🏆' });
    expect(resultBadge(game([seat(0, 'x', -8), seat(1, 'me', -14), seat(2, 'b', -8)]), 'me')).toEqual({ key: 'result.place3', emoji: '🥉' });
  });

  it('an aborted game reads as a draw for everyone, whatever the scores', () => {
    const g = { ...game([seat(0, 'me', 50), seat(1, 'a', 30)]), endReason: 'aborted' };
    expect(resultBadge(g, 'me')).toEqual({ key: 'result.draw', emoji: '🏅' });
  });
});

describe('seatMedal', () => {
  it('is empty for a game still in progress', () => {
    expect(seatMedal(game([seat(0, 'a', 5), seat(1, 'b', 3)], 'active'), 0)).toBe('');
  });

  it('finished: places each seat by final score', () => {
    const g = game([seat(0, 'a', 100), seat(1, 'b', 400, true), seat(2, 'c', 300), seat(3, 'd', 200)]);
    expect(seatMedal(g, 1)).toBe('🏆'); // 400 → 1st
    expect(seatMedal(g, 2)).toBe('🥈'); // 300 → 2nd
    expect(seatMedal(g, 3)).toBe('🥉'); // 200 → 3rd
    expect(seatMedal(g, 0)).toBe('🏅'); // 100 → 4th
  });

  it('a tie for the lead shares first place; the rest place below (competition ranking)', () => {
    // The owner's case: a scoreless end deducted racks to -8 / -14 / -8, tying seats 0 and 2 for the
    // lead — they must SHARE the trophy, not all show the last-place medal (the reported bug).
    const g = game([seat(0, 'a', -8), seat(1, 'b', -14), seat(2, 'c', -8)]);
    expect(seatMedal(g, 0)).toBe('🏆');
    expect(seatMedal(g, 2)).toBe('🏆');
    expect(seatMedal(g, 1)).toBe('🥉'); // two seats rank above it → 3rd
  });

  it('an excluded / resigned seat gets no medal and does not push the others down', () => {
    const g = game([seat(0, 'a', 50), seat(1, 'b', 900, false, true), seat(2, 'c', 30)]);
    expect(seatMedal(g, 1)).toBe(''); // resigned: no medal, though its frozen score is the highest
    expect(seatMedal(g, 0)).toBe('🏆'); // ranked among the rest: highest → 1st
    expect(seatMedal(g, 2)).toBe('🥈');
  });
});