Shopify Plus Data Layer Contract, Custom Checkout Extensibility & Multi-Pixel CAPI for Royal Nomad Jewelry

                  // Shopify Admin > Customer Events > Custom Pixel: Web Pixels API Subscriber
analytics.subscribe('checkout_completed', (event) => {
  const checkout = event.data.checkout;
  const customEventId = 'ord_' + (checkout.order?.id || checkout.token || Date.now());

  const payload = {
    event_name: 'purchase',
    event_id: customEventId,
    ecommerce: {
      transaction_id: String(checkout.order?.id || checkout.token),
      value: parseFloat(checkout.totalPrice?.amount || 0),
      tax: parseFloat(checkout.totalTax?.amount || 0),
      shipping: parseFloat(checkout.shippingLine?.price?.amount || 0),
      currency: checkout.currencyCode || 'USD',
      items: (checkout.lineItems || []).map((item, idx) => ({
        item_id: item.variant?.sku || String(item.variant?.id),
        item_name: item.title || 'Fine Jewelry',
        item_variant: item.variant?.title || '',
        price: parseFloat(item.variant?.price?.amount || 0),
        quantity: item.quantity || 1,
        index: idx + 1
      }))
    },
    user_data: {
      email: checkout.email || '',
      phone: checkout.phone || '',
      first_name: checkout.shippingAddress?.firstName || '',
      last_name: checkout.shippingAddress?.lastName || '',
      city: checkout.shippingAddress?.city || '',
      postal_code: checkout.shippingAddress?.zip || '',
      country: checkout.shippingAddress?.countryCode || 'US'
    }
  };

  // Dispatch to Server-Side GTM Endpoint
  fetch('https://path.dlayer.tech/shopify-customer-events', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(payload),
    mode: 'no-cors'
  });
});
                

                  // Server-Side GTM Transformation: Hash PII & Format Meta CAPI Payload
const sha256 = require('sha256');
const eventData = getEventData();
const userData = eventData.user_data || {};

const metaPayload = {
  event_name: 'Purchase',
  event_time: Math.floor(getTimestampMillis() / 1000),
  event_id: eventData.event_id,
  event_source_url: eventData.page_location || 'https://royalnomadjewelry.com',
  action_source: 'website',
  user_data: {
    em: userData.email ? [sha256(userData.email.trim().toLowerCase())] : [],
    ph: userData.phone ? [sha256(userData.phone.replace(/[^0-9]/g, ''))] : [],
    fn: userData.first_name ? [sha256(userData.first_name.trim().toLowerCase())] : [],
    ln: userData.last_name ? [sha256(userData.last_name.trim().toLowerCase())] : [],
    ct: userData.city ? [sha256(userData.city.trim().toLowerCase())] : [],
    zp: userData.postal_code ? [sha256(userData.postal_code.trim().toLowerCase())] : [],
    country: userData.country ? [sha256(userData.country.trim().toLowerCase())] : ['us'],
    fbp: getCookieValues('_fbp')[0] || undefined,
    fbc: getCookieValues('_fbc')[0] || undefined
  },
  custom_data: {
    currency: eventData.ecommerce.currency || 'USD',
    value: eventData.ecommerce.value,
    content_type: 'product',
    contents: (eventData.ecommerce.items || []).map(i => ({
      id: i.item_id,
      quantity: i.quantity,
      item_price: i.price
    }))
  }
};

return metaPayload;