import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { onTapCode } from '../src/lib/tap-code.js';

const tap = (node) => node.dispatchEvent(new Event('click'));

beforeEach(() => vi.useFakeTimers());
afterEach(() => vi.useRealTimers());

describe('onTapCode', () => {
  it('fires after `count` taps inside the window', () => {
    const node = new EventTarget();
    const fn = vi.fn();
    onTapCode(node, fn, { count: 7, windowMs: 1500 });
    for (let i = 0; i < 6; i++) tap(node);
    expect(fn).not.toHaveBeenCalled();
    tap(node);
    expect(fn).toHaveBeenCalledTimes(1);
  });

  it('resets when taps are too far apart', () => {
    const node = new EventTarget();
    const fn = vi.fn();
    onTapCode(node, fn, { count: 3, windowMs: 500 });
    tap(node);
    tap(node);
    vi.advanceTimersByTime(600); // window elapsed -> counter clears
    tap(node);
    tap(node);
    expect(fn).not.toHaveBeenCalled();
    tap(node);
    expect(fn).toHaveBeenCalledTimes(1);
  });

  it('unbind stops it', () => {
    const node = new EventTarget();
    const fn = vi.fn();
    const off = onTapCode(node, fn, { count: 2 });
    off();
    tap(node);
    tap(node);
    expect(fn).not.toHaveBeenCalled();
  });
});