Shopify Web Pixel

analytics.subscribe("checkout_completed", (event) => {
  fetch("https://dashfast.cz/api/v1/track", {
    method: "POST",
    keepalive: true,
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({
      apiKey: "VASE_API_KEY",
      events: [{
        type: "sale",
        name: "Shopify Order",
        properties: {
          orderId: event.data.checkout.order.id,
          revenue: event.data.checkout.totalPrice.amount,
          currency: event.data.checkout.totalPrice.currencyCode
        }
      }],
      utm_source: event.context.document.location.searchParams.get("utm_source"),
      referrer: event.context.document.referrer
    })
  });
});