export async function api(path, options = {}) {
  const binaryBody = options.body instanceof ArrayBuffer || options.body instanceof Blob || options.body instanceof FormData;
  const response = await fetch(path, {
    credentials: 'same-origin',
    headers: { ...(options.body && !binaryBody ? { 'Content-Type': 'application/json' } : {}), ...options.headers },
    ...options,
    body: options.body && typeof options.body !== 'string' && !binaryBody ? JSON.stringify(options.body) : options.body
  });
  const type = response.headers.get('content-type') || '';
  const data = type.includes('application/json') ? await response.json() : await response.text();
  if (!response.ok) throw new Error(data?.message || '操作未完成，请稍后重试');
  return data;
}