import { describe, expect, it } from 'vitest';
import { mkdtempSync, utimesSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import { installChanged, readInstallStamp } from '../src/main/upgrade-watch';

describe('upgrade-watch', () => {
  it('lit une empreinte de fichier, et rien pour un chemin absent', () => {
    const file = join(mkdtempSync(join(tmpdir(), 'arb-stamp-')), 'bin');
    writeFileSync(file, 'v1', 'utf8');
    const stamp = readInstallStamp(file);
    expect(stamp?.size).toBe(2);
    expect(readInstallStamp(join(file, 'nulle-part'))).toBeNull();
  });

  it('détecte le remplacement du binaire (mtime/taille)', () => {
    const file = join(mkdtempSync(join(tmpdir(), 'arb-stamp-')), 'bin');
    writeFileSync(file, 'v1', 'utf8');
    const boot = readInstallStamp(file);
    expect(installChanged(boot, readInstallStamp(file))).toBe(false);

    writeFileSync(file, 'version deux', 'utf8');
    utimesSync(file, new Date(), new Date(Date.now() + 5_000)); // dpkg pose un mtime plus récent
    expect(installChanged(boot, readInstallStamp(file))).toBe(true);
  });

  it('une empreinte illisible ne conclut jamais à une mise à jour', () => {
    const stamp = { ino: 1, mtimeMs: 2, size: 3 };
    expect(installChanged(null, stamp)).toBe(false);
    expect(installChanged(stamp, null)).toBe(false);
    expect(installChanged(null, null)).toBe(false);
  });
});