Enhanced Google Analytics 4 Integration and Ecommerce Tracking Improvements

app/code/core/Mage/GoogleAnalytics/Helper/Data.php

@@ -28,6 +28,8 @@ class Mage_GoogleAnalytics_Helper_Data extends Mage_Core_Helper_Abstract
     public const XML_PATH_TYPE          = 'google/analytics/type';
     public const XML_PATH_ACCOUNT       = 'google/analytics/account';
     public const XML_PATH_ANONYMIZATION = 'google/analytics/anonymization';
+    public const XML_PATH_DEBUG         = 'google/analytics/debug';
+    public const XML_PATH_USERID        = 'google/analytics/user_id';
 
     /**
      * @var string google analytics 4
@@ -104,4 +106,37 @@ public function isUseAnalytics4($store = null)
     {
         return Mage::getStoreConfig(self::XML_PATH_TYPE, $store) == self::TYPE_ANALYTICS4;
     }
+
+    /**
+     * Whether GA Debug Mode is enabled (only for development IP)
+     *
+     * @param null $store
+     * @return bool
+     */
+    public function isDebugModeEnabled($store = null)
+    {
+        return Mage::getStoreConfigFlag(self::XML_PATH_DEBUG, $store) && Mage::helper('core')->isDevAllowed();
+    }
+
+    /**
+     * Log debug message
+     *
+     * @param string $message
+     */
+    public function log($message = null)
+    {
+        $filename = sprintf('google%s.log', Mage::getStoreConfig(self::XML_PATH_TYPE));
+        Mage::log($message, Zend_Log::DEBUG, $filename, true);
+    }
+
+    /**
+     * Whether GA IP Anonymization is enabled
+     *
+     * @param null $store
+     * @return bool
+     */
+    public function isUserIdEnabled($store = null)
+    {
+        return Mage::getStoreConfigFlag(self::XML_PATH_USERID, $store);
+    }
 }

app/code/core/Mage/GoogleAnalytics/Model/Observer.php

@@ -59,7 +59,10 @@ public function removeItemFromCartGoogleAnalytics(Varien_Event_Observer $observe
     {
         $productRemoved = $observer->getEvent()->getQuoteItem()->getProduct();
         if ($productRemoved) {
-            Mage::getSingleton('core/session')->setRemovedProductCart($productRemoved->getId());
+            $_removedProducts = Mage::getSingleton('core/session')->getRemovedProductsCart() ?: [];
+            $_removedProducts[] = $productRemoved->getId();
+            $_removedProducts = array_unique($_removedProducts);
+            Mage::getSingleton('core/session')->setRemovedProductsCart($_removedProducts);
         }
     }
 
@@ -72,7 +75,14 @@ public function addItemToCartGoogleAnalytics(Varien_Event_Observer $observer)
     {
         $productAdded = $observer->getEvent()->getQuoteItem()->getProduct();
         if ($productAdded) {
-            Mage::getSingleton('core/session')->setAddedProductCart($productAdded->getId());
+            // Fix double add to cart for configurable products, skip child product
+            if ($productAdded->getParentProductId()) {
+                return;
+            }
+            $_addedProducts = Mage::getSingleton('core/session')->getAddedProductsCart() ?: [];
+            $_addedProducts[] = $productAdded->getParentItem() ? $productAdded->getParentItem()->getId() : $productAdded->getId();
+            $_addedProducts = array_unique($_addedProducts);
+            Mage::getSingleton('core/session')->setAddedProductsCart($_addedProducts);
         }
     }
 }

app/code/core/Mage/GoogleAnalytics/etc/system.xml

@@ -57,6 +57,32 @@
                             <show_in_website>1</show_in_website>
                             <show_in_store>1</show_in_store>
                         </account>
+                        <user_id translate="label comment">
+                            <label>User ID tracking</label>
+                            <frontend_type>select</frontend_type>
+                            <source_model>adminhtml/system_config_source_yesno</source_model>
+                            <sort_order>21</sort_order>
+                            <show_in_default>1</show_in_default>
+                            <show_in_website>1</show_in_website>
+                            <show_in_store>1</show_in_store>
+                            <comment>Enable GA4 User_id tracking for logged in customers.</comment>
+                            <depends>
+                              <type>analytics4</type>
+                            </depends>
+                        </user_id>
+                        <debug translate="label comment">
+                            <label>Debug</label>
+                            <frontend_type>select</frontend_type>
+                            <source_model>adminhtml/system_config_source_yesno</source_model>
+                            <sort_order>22</sort_order>
+                            <show_in_default>1</show_in_default>
+                            <show_in_website>1</show_in_website>
+                            <show_in_store>1</show_in_store>
+                            <comment>Enable GA4 Debug Real Time view for Development IP.</comment>
+                            <depends>
+                              <type>analytics4</type>
+                            </depends>
+                        </debug>
                         <anonymization translate="label">
                             <label>Enable IP anonymization</label>
                             <frontend_type>select</frontend_type>
@@ -65,6 +91,9 @@
                             <show_in_default>1</show_in_default>
                             <show_in_website>1</show_in_website>
                             <show_in_store>1</show_in_store>
+                            <depends>
+                                <type>universal</type>
+                            </depends>
                         </anonymization>
                     </fields>
                 </analytics>

app/design/frontend/base/default/template/googleanalytics/ga.phtml

@@ -25,8 +25,7 @@ $_accountId = $_helper->getAccountId();
         <script>
             window.dataLayer = window.dataLayer || [];
             function gtag(){dataLayer.push(arguments);}
-            gtag('js', new Date());
-            gtag('config', '<?= $_accountId ?>');
+            <?php echo $this->_getPageTrackingCode($_accountId) ?>
             <?php echo $this->_getOrdersTrackingCodeAnalytics4() ?>
         </script>
         <!-- END GOOGLE ANALYTICS 4 CODE -->

app/locale/en_US/Mage_GoogleAnalytics.csv

@@ -6,3 +6,5 @@
 "Type","Type"
 "Universal Analytics","Universal Analytics"
 "Google Analytics 4","Google Analytics 4"
+"Enable GA4 User_id tracking for logged in customers.","Enable GA4 User_id tracking for logged in customers."
+"Enable GA4 Debug Real Time view for Development IP.","Enable GA4 Debug Real Time view for Development IP."