Add tracker to Post-purchase page

<script name="sliderule-tracking" data-ot-ignore>
  var upsellCount = 0;

  // UTILS -----------------------------------------------------------------
  // Function called after original order is placed, pre upsell.
  function onCheckout(initialOrder, shopifyObject) {
    var postPurchaseEvent = shopifyObject.wasPostPurchasePageSeen
      ? "refresh_post_purchase"
      : "purchase";
    pushSlideruleData(
      initialOrder,
      initialOrder.lineItems,
      false,
      null,
      shopifyObject,
      postPurchaseEvent
    );
  }

  // Function called when upsell is taken. Seperate the new/upsell
  // items from the items in the initial order and then send a purchase event
  // for just the new items.
  function onCheckoutAmended(upsellOrder, initialOrder, shopifyObject) {
    // identify which items were added to the initial order, if any.
    upsellCount++;
    // The line item id is unique for order items, even if the items contained are the same.
    // We can use this to seperate out items from the initial order from the upsell.
    var initialItemIds = initialOrder.lineItems.map(function (line) {
      return line.id;
    });
    var addedItems = upsellOrder.lineItems.filter(function (line) {
      return initialItemIds.indexOf(line.id) < 0;
    });
    // if no new items were added skip tracking
    var postPurchaseEvent =
      addedItems.length === 0 ? "refresh_post_purchase" : "purchase";

    pushSlideruleData(
      upsellOrder,
      addedItems,
      true,
      initialOrder,
      shopifyObject,
      postPurchaseEvent
    );
  }

  function pushSlideruleData(
    order,
    addedItems,
    isUpsell,
    initialOrder,
    shopifyObject,
    postPurchaseEvent
  ) {
    window.slideruleData.postPurchaseEvent = postPurchaseEvent;
    var userProperties = getUserProperties(order);
    var orderData = getOrderData(
      order,
      isUpsell,
      initialOrder,
      addedItems,
      shopifyObject
    );

    if (isUpsell) {
      window.dataLayer.push({
        event: "purchase",
        ecommerce: {
          is_upsell: isUpsell,
          ecommerce_event: true,
          fired_from: "SlideRule Analytics",
          upsell_count: upsellCount,
          transaction_id: orderData.id,
          order_number: orderData.number,
          customer_id: userProperties.customer_id,
          currency: order.currency,
          shipping: orderData.shipping,
          value: orderData.revenue,
          tax: orderData.tax,
          items: getLineItems(addedItems),
        },
      });
      console.log("SlideRule Analytics: track:", {
        event: "purchase",
        ecommerce: {
          is_upsell: isUpsell,
          ecommerce_event: true,
          fired_from: "SlideRule Analytics",
          upsell_count: upsellCount,
          transaction_id: orderData.id,
          order_number: orderData.number,
          customer_id: userProperties.customer_id,
          currency: order.currency,
          shipping: orderData.shipping,
          value: orderData.revenue,
          tax: orderData.tax,
          items: getLineItems(addedItems),
        },
      });
    } else {
      window.slideruleData.orderInformation = {
        is_upsell: isUpsell,
        upsell_count: upsellCount,
        transaction_id: orderData.id,
        order_number: orderData.number,
        customer_id: userProperties.customer_id,
        currency: order.currency,
        shipping: orderData.shipping,
        value: orderData.revenue,
        tax: orderData.tax,
        items: getLineItems(addedItems),
      };

      window.slideruleData.customer = {
        id: userProperties.customer_id,
        email: userProperties.customer_email,
        firstName: userProperties.customer_first_name,
        lastName: userProperties.customer_last_name,
      };
    }
  }
  // Returns a user properties object
  function getUserProperties(data) {
    return {
      customer_id: data.customer.id.toString(),
      customer_email: data.customer.email,
      customer_first_name: data.customer.firstName,
      customer_last_name: data.customer.lastName,
    };
  }

  // Gets line items in purchase
  function getLineItems(lineItems) {
    return lineItems.map(function (item) {
      return {
        item_id: item.variant.id.toString(),
        item_name: item.title.replace(/&amp;/g, "&"),
        price: item.price,
        quantity: item.quantity,
      };
    });
  }

  function getOrderData(
    order,
    isUpsell,
    initialOrder,
    addedItems,
    shopifyObject
  ) {
    var revenue = isUpsell
      ? getAdditionalRevenue(order, initialOrder)
      : order.totalPrice;
    var subtotal = isUpsell
      ? getAdditionalSubtotal(order, initialOrder)
      : order.subtotalPrice;
    try {
      affiliation = new URL(shopifyObject.pageUrl).hostname;
    } catch (e) {
      affiliation = "";
    }
    return {
      affiliation: affiliation,
      // This is the longer order id that shows in the url on an order page
      id: getOrderId(order.id, isUpsell).toString(),
      // This should be the #1240 that shows in order page.
      number: order.number.toString(),
      // This is total discount. Dollar value, not percentage
      // On the first order we can look at the discounts object. On upsells, we can't.
      // This needs to be a string.
      discount_amount: getDiscountAmount(order, isUpsell, addedItems),
      // We can't determine shipping & tax. For the time being put the difference between subtotal and rev in tax
      shipping: 0,
      tax: (parseFloat(revenue) - parseFloat(subtotal)).toString(),
      revenue: revenue,
      sub_total: subtotal,
    };
  }

  function getDiscountAmount(shopifyOrder, isUpsell, addedItems) {
    if (
      shopifyOrder.discounts === null ||
      typeof shopifyOrder.discounts === "undefined"
    )
      return "0";
    if (shopifyOrder.discounts.length === 0) return "0";
    // If this isn't an upsell we can look at the discounts object.
    if (!isUpsell) {
      // Collect all the discounts on the first order.
      return shopifyOrder.discounts
        .reduce(function (acc, discount) {
          return (acc += parseFloat(discount.amount));
        }, 0)
        .toFixed(2)
        .toString();
      // If this an upsell we have to look at the line item discounts
      // The discount block provided doesn't only applies to the first order.
    } else {
      return addedItems
        .reduce(function (acc, addedItem) {
          return (acc += parseFloat(addedItem.lineLevelTotalDiscount));
        }, 0)
        .toFixed(2)
        .toString();
    }
  }

  function getOrderId(orderId, isUpsell) {
    return isUpsell
      ? orderId.toString() + "-US" + upsellCount.toString()
      : orderId;
  }

  function getAdditionalRevenue(newOrder, initialOrder) {
    return (
      parseFloat(newOrder.totalPrice) - parseFloat(initialOrder.totalPrice)
    ).toFixed(2);
  }

  function getAdditionalSubtotal(newOrder, initialOrder) {
    return (
      parseFloat(newOrder.subtotalPrice) -
      parseFloat(initialOrder.subtotalPrice)
    ).toFixed(2);
  }

  function test() {
    onCheckoutAmended(newOrder, initialOrder);
  }

  // END UTILS -----------------------------------------------------------------

  // Start main
  (function () {
    window.slideruleData = {
      version: "v0.0.1",
      referralExclusion:
        "/(paypal|visa|MasterCard|clicksafe|arcot\\.com|geschuetzteinkaufen|checkout\\.shopify\\.com|checkout\\.rechargeapps\\.com|portal\\.afterpay\\.com|payfort)/",
      googleSignals: true,
      anonymizeIp: true,
      productClicks: true,
      persistentUserId: true,
      hideBranding: false,
      ecommerce: {
        currencyCode: window.Shopify.shop.currency,
        impressions: [],
      },
      pageType: "post-purchase",
      destinations: {
        google_tag_manager: {
          containerIds: ["GTM-XXXXX"],
        },
      },
      cookieUpdate: true,
    };
    // EVENT HOOKS -----------------------------------------------------------

    onCheckout(window.Shopify.order, window.Shopify);

    Shopify.on("CheckoutAmended", function (newOrder, initialOrder) {
      onCheckoutAmended(newOrder, initialOrder, window.Shopify);
    });
    // END EVENT HOOKS -------------------------------------------------------

    try {
      module.exports = exports = {
        onCheckoutAmended: onCheckoutAmended,
        onCheckout: onCheckout,
        resetUpsellCount: function () {
          upsellCount = 0;
        },
      };
    } catch (e) {}
  })();
</script>
<script
  async
  type="text/javascript"
  src="https://grow.slideruleanalytics.com/eluredils-g.js"
></script>