import { describe, expect, it, beforeAll } from 'vitest';

import { setCryptoBackend } from './backend';
import { makeWasmTestBackend } from './testBackend';
import { generateRecoveryCode, normalizeRecoveryCode, RECOVERY_CODE_LEN } from './recoveryCode';

beforeAll(async () => { setCryptoBackend(await makeWasmTestBackend()); });

describe('recoveryCode', () => {
  it('generates a 24-char alphabet-restricted code grouped 4×6 with dashes', async () => {
    const code = await generateRecoveryCode();
    expect(code).toHaveLength(27);
    const groups = code.split('-');
    expect(groups).toHaveLength(4);
    for (const g of groups) expect(g).toMatch(/^[ABCDEFGHJKLMNPQRSTUVWXYZ23456789]{6}$/);
  });

  it('normalizeRecoveryCode strips dashes/spaces and uppercases', () => {
    expect(normalizeRecoveryCode(' abcdef-ghjklm-npqrst-uvwxyz ')).toBe('ABCDEFGHJKLMNPQRSTUVWXYZ');
  });

  it('normalizeRecoveryCode drops characters outside the alphabet', () => {
    expect(normalizeRecoveryCode('AB1OD-EF0H1J')).toBe('ABDEFHJ');
  });

  it('RECOVERY_CODE_LEN matches alphabet length', () => {
    expect(RECOVERY_CODE_LEN).toBe(24);
  });
});