import { afterEach, describe, expect, it, vi } from 'vitest';

import { HostShellComponent } from './host-shell.component';

type FetchMock = ReturnType<typeof vi.fn>;

function jsonResponse(status: number, body: unknown) {
  return {
    ok: status >= 200 && status < 300,
    status,
    json: vi.fn().mockResolvedValue(body),
  } as unknown as Response;
}

function sessionDetailPayload(status: string, options?: { roundQuestionId?: number | null }) {
  const roundQuestionId = options?.roundQuestionId ?? 41;

  return {
    session: {
      code: 'ABCD12',
      status,
      host_id: 1,
      current_round: status === 'lobby' ? 2 : 1,
      players_count: 2,
    },
    round_question:
      roundQuestionId === null
        ? null
        : {
            id: roundQuestionId,
            round_number: 1,
            prompt: 'Q?',
            shown_at: '2026-01-01T00:00:00Z',
            answers: [],
          },
    players: [
      { id: 1, nickname: 'Host', score: 0, is_connected: true },
      { id: 2, nickname: 'Mads', score: 120, is_connected: true },
    ],
    phase_view_model: {
      status,
      round_number: 1,
      players_count: 2,
      constraints: {
        min_players_to_start: 2,
        max_players_mvp: 8,
        min_players_reached: true,
        max_players_allowed: true,
      },
      host: {
        can_start_round: status === 'lobby',
        can_show_question: status === 'lie',
        can_mix_answers: status === 'lie',
        can_calculate_scores: status === 'guess',
        can_reveal_scoreboard: status === 'reveal',
        can_start_next_round: status === 'scoreboard',
        can_finish_game: status === 'scoreboard',
      },
      player: {
        can_join: status === 'lobby',
        can_submit_lie: status === 'lie',
        can_submit_guess: status === 'guess',
        can_view_final_result: status === 'finished',
      },
    },
  };
}

describe('HostShellComponent gameplay wiring', () => {
  afterEach(() => {
    vi.restoreAllMocks();
  });

  it('runs startRound transition and refreshes session details', async () => {
    const fetchMock: FetchMock = vi
      .fn()
      .mockResolvedValueOnce(
        jsonResponse(201, {
          session: { code: 'ABCD12', status: 'lie', current_round: 1 },
          round: { number: 1, category: { slug: 'history', name: 'History' } },
        })
      )
      .mockResolvedValueOnce(jsonResponse(200, sessionDetailPayload('lie')));

    vi.stubGlobal('fetch', fetchMock);

    const component = new HostShellComponent();
    component.sessionCode = ' abcd12 ';
    component.categorySlug = ' history ';

    await component.startRound();

    expect(fetchMock).toHaveBeenNthCalledWith(
      1,
      '/lobby/sessions/ABCD12/rounds/start',
      expect.objectContaining({ method: 'POST', body: JSON.stringify({ category_slug: 'history' }) })
    );
    expect(fetchMock).toHaveBeenNthCalledWith(2, '/lobby/sessions/ABCD12', expect.objectContaining({ method: 'GET' }));
    expect(component.session?.session.status).toBe('lie');
    expect(component.roundQuestionId).toBe('41');
    expect(component.loading).toBe(false);
  });

  it('captures scoreboard error for retry path', async () => {
    const fetchMock: FetchMock = vi.fn().mockResolvedValue(jsonResponse(500, { error: 'Scoreboard unavailable' }));

    vi.stubGlobal('fetch', fetchMock);

    const component = new HostShellComponent();
    component.sessionCode = 'ABCD12';

    await component.loadScoreboard();

    expect(fetchMock).toHaveBeenCalledWith('/lobby/sessions/ABCD12/scoreboard', expect.objectContaining({ method: 'GET' }));
    expect(component.scoreboardError).toContain('Scoreboard failed: Scoreboard unavailable');
    expect(component.loading).toBe(false);
  });

  it('wires showQuestion, mixAnswers and calculateScores with expected request payloads', async () => {
    const fetchMock: FetchMock = vi
      .fn()
      .mockResolvedValueOnce(
        jsonResponse(200, {
          round_question: {
            id: 77,
            round_number: 1,
            prompt: 'Q?',
            shown_at: '2026-01-01T00:00:00Z',
            lie_deadline_at: '2026-01-01T00:00:45Z',
          },
          config: { lie_seconds: 45 },
        })
      )
      .mockResolvedValueOnce(jsonResponse(200, sessionDetailPayload('lie', { roundQuestionId: 77 })))
      .mockResolvedValueOnce(
        jsonResponse(200, {
          session: { code: 'ABCD12', status: 'guess', current_round: 1 },
          round_question: { id: 77, round_number: 1 },
          answers: [{ text: 'A' }],
        })
      )
      .mockResolvedValueOnce(jsonResponse(200, sessionDetailPayload('guess', { roundQuestionId: 77 })))
      .mockResolvedValueOnce(
        jsonResponse(200, {
          session: { code: 'ABCD12', status: 'reveal', current_round: 1 },
          round_question: { id: 77, round_number: 1 },
          events_created: 2,
          leaderboard: [{ id: 1, nickname: 'Luna', score: 320 }],
        })
      )
      .mockResolvedValueOnce(jsonResponse(200, sessionDetailPayload('reveal', { roundQuestionId: 77 })));

    vi.stubGlobal('fetch', fetchMock);

    const component = new HostShellComponent();
    component.sessionCode = ' abcd12 ';
    component.roundQuestionId = ' 77 ';

    await component.showQuestion();
    await component.mixAnswers();
    await component.calculateScores();

    expect(component.error).toBe('');
    expect(component.loading).toBe(false);
  });

  it('runs next-round transition without reload and clears scoreboard payload', async () => {
    const fetchMock: FetchMock = vi
      .fn()
      .mockResolvedValueOnce(jsonResponse(200, { session: { code: 'ABCD12', status: 'lobby', current_round: 2 } }))
      .mockResolvedValueOnce(jsonResponse(200, sessionDetailPayload('lobby', { roundQuestionId: null })));

    vi.stubGlobal('fetch', fetchMock);

    const component = new HostShellComponent();
    component.sessionCode = ' abcd12 ';
    component.scoreboardPayload = '{"leaderboard":[]}';
    component.finalLeaderboardPayload = '{"leaderboard":[{"nickname":"Old","score":1}]}' ;
    component.finalLeaderboard = [{ id: 9, nickname: 'Old', score: 1 }];

    await component.startNextRound();

    expect(fetchMock).toHaveBeenNthCalledWith(
      1,
      '/lobby/sessions/ABCD12/rounds/next',
      expect.objectContaining({ method: 'POST', body: JSON.stringify({}) })
    );
    expect(fetchMock).toHaveBeenNthCalledWith(2, '/lobby/sessions/ABCD12', expect.objectContaining({ method: 'GET' }));
    expect(component.session?.session.status).toBe('lobby');
    expect(component.scoreboardPayload).toBe('');
    expect(component.finalLeaderboardPayload).toBe('');
    expect(component.finalLeaderboard).toEqual([]);
    expect(component.nextRoundError).toBe('');
  });

  it('captures finish-game failure for retry and stores final leaderboard on success', async () => {
    const fetchMock: FetchMock = vi
      .fn()
      .mockResolvedValueOnce(jsonResponse(503, { error: 'Final leaderboard timeout' }))
      .mockResolvedValueOnce(
        jsonResponse(200, {
          session: { code: 'ABCD12', status: 'finished', current_round: 2 },
          winner: { id: 1, nickname: 'Luna', score: 320 },
          leaderboard: [
            { id: 2, nickname: 'Mads', score: 120 },
            { id: 1, nickname: 'Luna', score: 320 },
          ],
        })
      )
      .mockResolvedValueOnce(jsonResponse(200, sessionDetailPayload('finished', { roundQuestionId: null })));

    vi.stubGlobal('fetch', fetchMock);

    const component = new HostShellComponent();
    component.sessionCode = 'ABCD12';

    await component.finishGame();
    expect(component.finishError).toContain('Finish game failed: Final leaderboard timeout');

    await component.finishGame();

    expect(fetchMock).toHaveBeenNthCalledWith(
      2,
      '/lobby/sessions/ABCD12/finish',
      expect.objectContaining({ method: 'POST', body: JSON.stringify({}) })
    );
    expect(component.finishError).toBe('');
    expect(component.finalLeaderboardPayload).toContain('"status": "finished"');
    expect(component.finalWinner?.nickname).toBe('Luna');
    expect(component.finalLeaderboard.map((entry) => entry.nickname)).toEqual(['Luna', 'Mads']);
  });

  it('guards next-round and finish actions when session code is missing', async () => {
    const fetchMock: FetchMock = vi.fn();
    vi.stubGlobal('fetch', fetchMock);

    const component = new HostShellComponent();
    component.sessionCode = '   ';

    await component.startNextRound();
    await component.finishGame();

    expect(fetchMock).not.toHaveBeenCalled();
    expect(component.nextRoundError).toContain('Session code is required');
    expect(component.finishError).toContain('Session code is required');
  });

  it('syncs host hash-route with latest phase after refresh without page reload', async () => {
    const fetchMock: FetchMock = vi.fn().mockResolvedValue(jsonResponse(200, sessionDetailPayload('guess', { roundQuestionId: 77 })));
    vi.stubGlobal('fetch', fetchMock);

    const replaceState = vi.fn();
    vi.stubGlobal('window', {
      location: { hash: '#/host/lobby/ABCD12' },
      history: { state: null, replaceState },
      sessionStorage: { getItem: vi.fn().mockReturnValue(null), setItem: vi.fn() },
    });

    const component = new HostShellComponent();
    component.sessionCode = 'ABCD12';

    await component.refreshSession();

    expect(replaceState).toHaveBeenCalledWith(null, '', '#/host/guess/ABCD12');
  });
});