const api = {
  async request(method, path, body) {
    const res = await fetch(path, {
      method,
      credentials: 'include',
      headers: body !== undefined ? { 'Content-Type': 'application/json' } : undefined,
      body: body !== undefined ? JSON.stringify(body) : undefined,
    });

    if (res.status === 204) return null;

    let data = null;
    const text = await res.text();
    if (text) {
      try { data = JSON.parse(text); } catch { data = null; }
    }

    if (!res.ok) {
      const err = new Error((data && data.error) || `Request failed (${res.status})`);
      err.status = res.status;
      throw err;
    }
    return data;
  },
  get(path) { return this.request('GET', path); },
  post(path, body) { return this.request('POST', path, body === undefined ? {} : body); },
  patch(path, body) { return this.request('PATCH', path, body === undefined ? {} : body); },
  del(path, body) { return this.request('DELETE', path, body); },
};