/**
 * This function is called when the customer completes the checkout process.
 * It takes the order ID as an argument and uses it to get the order total.
 * It then uses the order total to send a conversion tracking event to Google Analytics
 *
 * @param order_id The order ID.
 *
 * @return The order total.
 */
add_action('woocommerce_thankyou', 'conversion_tracking_thank_you_page', 95, 1);
function conversion_tracking_thank_you_page($order_id)
{
      $order = wc_get_order($order_id);

      if (!$order_id)
            return;

      foreach ($order->get_items() as $item_id => $item) {
            $total = $item->get_subtotal_tax();
      }

      $product_gtag = '
        <script>
            gtag("event", "page_view", {
                "send_to": "AW-10852304507/GCDUCITa7aMDEPuM5LYo",
                "value": "' .  $total . '",
                "currency": "PLN",
                "transaction_id": ""
            });
        </script>';
      echo $product_gtag;
}