import { describe, it, expect } from 'vitest';
import { konamiHandler, KONAMI_SEQUENCE } from '../src/lib/konami.js';

describe('konamiHandler', () => {
  it('fires once the full sequence is entered', () => {
    let hits = 0;
    const step = konamiHandler(() => hits++);
    KONAMI_SEQUENCE.forEach((k) => step(k));
    expect(hits).toBe(1);
  });

  it('is case-insensitive and fires again on a repeat', () => {
    let hits = 0;
    const step = konamiHandler(() => hits++);
    const upper = [
      'ArrowUp',
      'ArrowUp',
      'ArrowDown',
      'ArrowDown',
      'ArrowLeft',
      'ArrowRight',
      'ArrowLeft',
      'ArrowRight',
      'B',
      'A',
    ];
    upper.forEach((k) => step(k));
    upper.forEach((k) => step(k));
    expect(hits).toBe(2);
  });

  it('a wrong key rewinds, but a stray ↑ starts a fresh attempt', () => {
    let hits = 0;
    const step = konamiHandler(() => hits++);
    step('arrowup');
    step('arrowdown'); // wrong (expected another arrowup) -> reset
    step('x'); // noise
    KONAMI_SEQUENCE.forEach((k) => step(k)); // clean run
    expect(hits).toBe(1);
  });

  it('does not fire on a partial sequence', () => {
    let hits = 0;
    const step = konamiHandler(() => hits++);
    KONAMI_SEQUENCE.slice(0, -1).forEach((k) => step(k));
    expect(hits).toBe(0);
  });
});