import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { act, fireEvent, render, screen } from '@testing-library/react';
import { REACTION_SUCCESS_THRESHOLD_MS, ReactionGame } from '../../src/components/minigames/ReactionGame';

describe('ReactionGame', () => {
  beforeEach(() => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-03-18T12:00:00Z'));
    vi.spyOn(Math, 'random').mockReturnValue(0);
  });

  afterEach(() => {
    vi.useRealTimers();
    vi.restoreAllMocks();
  });

  it('fails on an early click before GO appears', () => {
    const onFail = vi.fn();
    render(<ReactionGame onSuccess={vi.fn()} onFail={onFail} />);

    fireEvent.click(screen.getByRole('button', { name: /Wait for GO!/i }));
    act(() => {
      vi.advanceTimersByTime(1000);
    });

    expect(onFail).toHaveBeenCalledTimes(1);
  });

  it('shows the cue after the randomized delay', () => {
    render(<ReactionGame onSuccess={vi.fn()} onFail={vi.fn()} />);

    act(() => {
      vi.advanceTimersByTime(1000);
    });
    expect(screen.getByText('GO!')).toBeTruthy();
  });

  it('succeeds when reaction time is 500ms or faster', () => {
    const onSuccess = vi.fn();
    render(<ReactionGame onSuccess={onSuccess} onFail={vi.fn()} />);

    act(() => {
      vi.advanceTimersByTime(1000);
    });
    vi.setSystemTime(new Date('2026-03-18T12:00:01.350Z'));
    fireEvent.click(screen.getByRole('button', { name: /CLICK!/i }));
    act(() => {
      vi.advanceTimersByTime(1000);
    });

    expect(screen.getByText(/350/)).toBeTruthy();
    expect(onSuccess).toHaveBeenCalledTimes(1);
  });

  it('fails when reaction time is slower than the threshold', () => {
    const onFail = vi.fn();
    render(<ReactionGame onSuccess={vi.fn()} onFail={onFail} />);

    act(() => {
      vi.advanceTimersByTime(1000);
    });
    vi.setSystemTime(new Date(`2026-03-18T12:00:01.${REACTION_SUCCESS_THRESHOLD_MS + 150}Z`));
    fireEvent.click(screen.getByRole('button', { name: /CLICK!/i }));
    act(() => {
      vi.advanceTimersByTime(1000);
    });

    expect(onFail).toHaveBeenCalledTimes(1);
  });
});