將區塊連線至AEM Edge函式

// blocks/estimated-delivery/estimated-delivery.js
const API_PATH = '/api/frescopa/estimated-delivery';
const LOCAL_EDGE_FUNCTION_ORIGIN = 'http://127.0.0.1:7676';

let cachedApiUrl;

function isLocalDev() {
  const { hostname } = window.location;
  return hostname === 'localhost' || hostname === '127.0.0.1';
}

function getEstimatedDeliveryApiUrl() {
  if (cachedApiUrl) return cachedApiUrl;

  // Local: site (aem up) on :3000, Edge Function on :7676 — call it directly.
  // Production: relative path, routed to Edge Function via CDN origin selector.
  cachedApiUrl = isLocalDev()
    ? `${LOCAL_EDGE_FUNCTION_ORIGIN}${API_PATH}`
    : API_PATH;

  return cachedApiUrl;
}

// blocks/estimated-delivery/estimated-delivery.js
async function fetchEstimatedDelivery(sku, postcode, signal) {
  const params = new URLSearchParams({ sku, postcode });
  const response = await fetch(`${getEstimatedDeliveryApiUrl()}?${params.toString()}`, {
    signal,
    cache: 'no-store',
  });

  const body = await response.json().catch(() => ({}));

  if (!response.ok) {
    const apiMessage = body.message || body.error;
    const err = new Error(apiMessage || 'Unable to check estimated delivery right now.');
    err.code = body.code;
    throw err;
  }

  return body;
}

// blocks/estimated-delivery/estimated-delivery.js
form.addEventListener('submit', async (event) => {
  event.preventDefault();
  // ...extract and validate sku/postcode from the form, omitted here...

  activeRequest?.abort();
  const controller = new AbortController();
  activeRequest = controller;

  setState({ loading: true });

  try {
    const data = await fetchEstimatedDelivery(sku, postcode, controller.signal);
    setState({ data });
  } catch (err) {
    if (err.name === 'AbortError') return;
    setState({ error: formatError(err) });
  }
});