import { LoginBackoffService } from '../../backend/src/common/services/login-backoff.service';

describe('LoginBackoffService', () => {
  it('starts unblocked', () => {
    const s = new LoginBackoffService();
    expect(s.isBlocked('1.1.1.1', 'alice', 1000)).toBe(0);
  });

  it('blocks after repeated failures and resets on success', () => {
    const s = new LoginBackoffService();
    const now = 1000;
    for (let i = 0; i < 5; i++) s.recordFailure('1.1.1.1', 'alice', now);
    expect(s.isBlocked('1.1.1.1', 'alice', now + 100)).toBeGreaterThan(0);
    s.reset('1.1.1.1', 'alice');
    expect(s.isBlocked('1.1.1.1', 'alice', now + 100)).toBe(0);
  });

  it('is per (ip, username)', () => {
    const s = new LoginBackoffService();
    for (let i = 0; i < 6; i++) s.recordFailure('1.1.1.1', 'alice', 1000 + i);
    expect(s.isBlocked('1.1.1.1', 'alice', 1100)).toBeGreaterThan(0);
    expect(s.isBlocked('1.1.1.1', 'bob', 1100)).toBe(0);
  });
});