import { describe, expect, it } from 'vitest';
import { compareVersions, newestBuild, parseAdvertisedRefs, parseManifest, rawFileUrl, sameElectronMajor } from '../src/main/updates';

const sha = (c: string): string => c.repeat(40);

describe('self-update helpers', () => {
  it('compares versions numerically', () => {
    expect(compareVersions('0.10.0', '0.9.9')).toBeGreaterThan(0);
    expect(compareVersions('1.2.3', '1.2.3')).toBe(0);
    expect(compareVersions('1.2.3', '1.3.0')).toBeLessThan(0);
    expect(() => compareVersions('v1.2.3', '1.0.0')).toThrow();
  });

  it('parses the refs advertised by git smart HTTP', () => {
    const body =
      '001e# service=git-upload-pack\n0000' +
      `00fa${sha('a')} refs/heads/main\0multi_ack thin-pack agent=git/2.47.3\n` +
      `003f${sha('b')} refs/builds/v0.2.0\n` +
      `003f${sha('c')} refs/tags/v0.2.0\n0000`;
    const refs = parseAdvertisedRefs(body);
    expect(refs.get('refs/heads/main')).toBe(sha('a'));
    expect(refs.get('refs/builds/v0.2.0')).toBe(sha('b'));
    expect(refs.get('refs/tags/v0.2.0')).toBe(sha('c'));
  });

  it('picks the newest build above the running version', () => {
    const refs = new Map([
      ['refs/builds/v0.2.0', sha('a')],
      ['refs/builds/v0.10.0', sha('b')],
      ['refs/builds/vbroken', sha('c')],
      ['refs/tags/v9.0.0', sha('d')],
    ]);
    expect(newestBuild(refs, '0.1.0')).toEqual({ version: '0.10.0', sha: sha('b') });
    expect(newestBuild(refs, '0.10.0')).toBeNull();
  });

  it('rejects unsafe or incomplete manifests', () => {
    const file = { path: 'app.asar', size: 3, sha256: 'f'.repeat(64) };
    const ok = { version: '0.2.0', electron: '38.8.6', files: [file] };
    expect(parseManifest(ok, '0.2.0').files).toHaveLength(1);
    expect(() => parseManifest(ok, '0.3.0')).toThrow(/expected 0.3.0/);
    expect(() => parseManifest({ ...ok, files: [file, { ...file, path: '../evil.exe' }] }, '0.2.0')).toThrow(/unsafe/);
    expect(() => parseManifest({ ...ok, files: [file, { ...file, path: 'C:/evil.exe' }] }, '0.2.0')).toThrow(/unsafe/);
    expect(() => parseManifest({ ...ok, files: [{ ...file, path: 'assets/a.png' }] }, '0.2.0')).toThrow(/app.asar/);
  });

  it('builds raw URLs and compares Electron runtimes', () => {
    expect(rawFileUrl('https://git.example/u/r', 'abc', 'app.asar.unpacked/node_modules/@scope/x.node')).toBe(
      'https://git.example/u/r/raw/abc/app.asar.unpacked/node_modules/%40scope/x.node',
    );
    expect(sameElectronMajor('38.8.6', '38.1.0')).toBe(true);
    expect(sameElectronMajor('39.0.0', '38.8.6')).toBe(false);
  });
});