import { describe, expect, test } from 'bun:test';
import { pickNewestArtifact } from './backup-pull';

describe('pickNewestArtifact', () => {
  const keys = [
    '2026-06-02/celilo-mgmt-2026-06-02T10-00-00-000Z.backup',
    '2026-06-04/celilo-mgmt-2026-06-04T21-05-21-637Z.backup',
    '2026-06-03/celilo-mgmt-2026-06-03T08-30-00-000Z.backup',
    '2026-06-04/system-2026-06-04T22-00-00-000Z.backup',
    '2026-06-01/celilo-2026-06-01T00-00-00-000Z.backup',
  ];

  test('picks the chronologically newest module artifact', () => {
    expect(pickNewestArtifact(keys, 'celilo-mgmt')).toBe(
      '2026-06-04/celilo-mgmt-2026-06-04T21-05-21-637Z.backup',
    );
  });

  test('does not treat a shorter module id as a prefix of a longer one', () => {
    // 'celilo' must NOT match 'celilo-mgmt-...' artifacts — only the literal
    // celilo-<year> artifact.
    expect(pickNewestArtifact(keys, 'celilo')).toBe(
      '2026-06-01/celilo-2026-06-01T00-00-00-000Z.backup',
    );
  });

  test('matches system-state artifacts via the system prefix', () => {
    expect(pickNewestArtifact(keys, 'system')).toBe(
      '2026-06-04/system-2026-06-04T22-00-00-000Z.backup',
    );
  });

  test('returns null when nothing matches', () => {
    expect(pickNewestArtifact(keys, 'homebridge')).toBeNull();
    expect(pickNewestArtifact([], 'celilo-mgmt')).toBeNull();
  });

  test('ignores non-.backup objects and verify probes', () => {
    const noisy = [
      'celilo-mgmt/.celilo-verify-test',
      '2026-06-04/celilo-mgmt-2026-06-04T21-05-21-637Z.backup',
      '2026-06-04/celilo-mgmt-notes.txt',
    ];
    expect(pickNewestArtifact(noisy, 'celilo-mgmt')).toBe(
      '2026-06-04/celilo-mgmt-2026-06-04T21-05-21-637Z.backup',
    );
  });
});