import { describe, expect, it } from 'vitest';
import { gamePhase, groupGames, isMyTurn, shouldBlink } from './lobbysort';
import type { GameView, Seat } from './model';

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

function game(id: string, status: GameView['status'], toMove: number, lastActivityUnix: number): GameView {
  return {
    id,
    variant: 'scrabble_en',
    dictVersion: 'v1',
    vsAi: false,
    unreadChat: false,
    status,
    players: 2,
    toMove,
    turnTimeoutSecs: 0,
    multipleWordsPerTurn: true,
    moveCount: 0,
    endReason: '',
    lastActivityUnix,
    seats: [seat(0, ME), seat(1, 'opp')],
  };
}

describe('groupGames', () => {
  it('partitions into your-turn, their-turn and finished', () => {
    const g = groupGames(
      [
        game('a', 'active', 0, 100), // toMove 0 == my seat -> my turn
        game('b', 'active', 1, 100), // their turn
        game('c', 'finished', 0, 100),
      ],
      ME,
    );
    expect(g.yourTurn.map((x) => x.id)).toEqual(['a']);
    expect(g.theirTurn.map((x) => x.id)).toEqual(['b']);
    expect(g.finished.map((x) => x.id)).toEqual(['c']);
  });

  it('orders your-turn oldest-first, the other two newest-first', () => {
    const g = groupGames(
      [
        game('y_new', 'active', 0, 200),
        game('y_old', 'active', 0, 100),
        game('t_new', 'active', 1, 200),
        game('t_old', 'active', 1, 100),
        game('f_new', 'finished', 0, 200),
        game('f_old', 'finished', 0, 100),
      ],
      ME,
    );
    expect(g.yourTurn.map((x) => x.id)).toEqual(['y_old', 'y_new']);
    expect(g.theirTurn.map((x) => x.id)).toEqual(['t_new', 't_old']);
    expect(g.finished.map((x) => x.id)).toEqual(['f_new', 'f_old']);
  });

  it('isMyTurn is false for a finished game even at my seat', () => {
    expect(isMyTurn(game('x', 'finished', 0, 0), ME)).toBe(false);
    expect(isMyTurn(game('x', 'active', 0, 0), ME)).toBe(true);
    expect(isMyTurn(game('x', 'active', 1, 0), ME)).toBe(false);
  });

  it('treats an open game (awaiting an opponent) as in progress, not finished', () => {
    const g = groupGames(
      [
        game('open_mine', 'open', 0, 100), // my turn while waiting
        game('open_wait', 'open', 1, 100), // the empty seat's turn
      ],
      ME,
    );
    expect(g.yourTurn.map((x) => x.id)).toEqual(['open_mine']);
    expect(g.theirTurn.map((x) => x.id)).toEqual(['open_wait']);
    expect(g.finished).toEqual([]);
    expect(isMyTurn(game('x', 'open', 0, 0), ME)).toBe(true);
  });
});

describe('gamePhase', () => {
  it('maps each game to its lobby bucket (open folds into mine/theirs like active)', () => {
    expect(gamePhase(game('x', 'active', 0, 0), ME)).toBe('mine');
    expect(gamePhase(game('x', 'active', 1, 0), ME)).toBe('theirs');
    expect(gamePhase(game('x', 'open', 0, 0), ME)).toBe('mine');
    expect(gamePhase(game('x', 'open', 1, 0), ME)).toBe('theirs');
    expect(gamePhase(game('x', 'finished', 0, 0), ME)).toBe('finished');
  });
});

describe('shouldBlink', () => {
  it('blinks on a transition into mine or finished', () => {
    expect(shouldBlink('theirs', 'mine')).toBe(true);
    expect(shouldBlink('mine', 'finished')).toBe(true);
    expect(shouldBlink('theirs', 'finished')).toBe(true);
  });

  it('stays quiet on a transition into theirs, a no-op, or a first sighting', () => {
    expect(shouldBlink('mine', 'theirs')).toBe(false);
    expect(shouldBlink('mine', 'mine')).toBe(false);
    expect(shouldBlink(undefined, 'mine')).toBe(false);
    expect(shouldBlink(undefined, 'finished')).toBe(false);
  });
});