Standard Google Tag Manager Transaction Event tracking with BigCommerce

standard_google_tag_manager_transaction_event_tracking_with_bigcommerce.txt

<script>
  window.dataLayer = window.dataLayer || [];

  var transaction = {};
  transaction.transactionProducts = [];

  function addTrans(orderID, store, total, tax, shipping, city, state, country) {
      transaction.transactionId = orderID;
      transaction.transactionAffiliation = store;
      transaction.transactionTotal = parseFloat(total);
      transaction.transactionTax = parseFloat(tax);
      transaction.transactionShipping = parseFloat(shipping);
  }

  function addItems(orderID, sku, product, variation, price, quantity) {
      transaction.transactionProducts.push({
          'id': orderID,
          'sku': sku,
          'name': product,
          'category': variation,
          'price': parseFloat(price),
          'quantity': quantity
      });
  }

  function trackTrans() {
      transaction.event = 'bcTransactionComplete';
      dataLayer.push(transaction);
  }

  function trackGTMEcommerce() {
      this._addTrans = addTrans;
      this._addItem = addItems;
      this._trackTrans = trackTrans;
  }

  var pageTracker = new trackGTMEcommerce();
</script>