/**
 * Injects Google Ads conversion events via gtag.js for:
 * - Add to Cart (on single product pages)
 * - Begin Checkout (on the /checkout page)
 * - Purchase (on the /order-received/ thank-you page)
 * 
 * These events are sent using gtag('event', ...) and include optional callbacks for debugging.
 * Make sure your Google Ads account has matching conversion actions for each event name.
 */

add_action('wp_footer', 'inject_google_ads_conversion_events');
function inject_google_ads_conversion_events() {
    ?>
    <script>
    document.addEventListener("DOMContentLoaded", function() {
      // ADD TO CART
      var addToCartButtons = document.querySelectorAll(".single_add_to_cart_button");
      addToCartButtons.forEach(function(button) {
        button.addEventListener("click", function() {
          if (typeof gtag !== 'undefined') {
            gtag('event', 'conversion_event_add_to_cart', {
              'event_callback': function() {
                console.log("Google Ads - Add to Cart Event Fired!");
              },
              'event_timeout': 2000
            });