const fs = require('fs');
const os = require('os');
const path = require('path');
const initInputWS = require('../server/InputWS');

// Bug 4: logs/ directory must be ensured so the first appendFileSync() call
// cannot crash on a fresh container/checkout.
describe('InputWS.ensureLogDir', () => {
  function tmpPath() {
    return path.join(os.tmpdir(), `inputws-logtest-${Date.now()}-${Math.random().toString(36).slice(2)}`);
  }

  test('creates a missing log directory', () => {
    const dir = tmpPath();
    expect(fs.existsSync(dir)).toBe(false);

    initInputWS.ensureLogDir(dir);

    expect(fs.existsSync(dir)).toBe(true);
    fs.rmSync(dir, { recursive: true, force: true });
  });

  test('creates nested directories recursively', () => {
    const base = tmpPath();
    const nested = path.join(base, 'a', 'b', 'logs');

    initInputWS.ensureLogDir(nested);

    expect(fs.existsSync(nested)).toBe(true);
    fs.rmSync(base, { recursive: true, force: true });
  });

  test('is idempotent when the directory already exists', () => {
    const dir = tmpPath();
    fs.mkdirSync(dir, { recursive: true });

    expect(() => initInputWS.ensureLogDir(dir)).not.toThrow();
    expect(fs.existsSync(dir)).toBe(true);
    fs.rmSync(dir, { recursive: true, force: true });
  });
});