woocommerce · message-dimke · Dec 27, 2023 · Nov 2, 2023 · Nov 29, 2023 · Dec 8, 2023
diff --git a/changelog.txt b/changelog.txt
@@ -1,135 +1,141 @@
 *** Facebook for WooCommerce Changelog ***
 
-= 3.1.5 - 2023-11-29 =
-* Fix - Remove mentions of shops.
-
-= 3.1.3 - 2023-11-07 =
-* Fix - Doc - Use new Woo.com domain.
-* Tweak - WC 8.3 compatibility.
-* Tweak - WP 6.4 compatibility.
-
-= 3.1.2 - 2023-10-19 =
-* Dev - Add phpcs on changed files only.
-
-= 3.1.1 - 2023-10-12 =
-* Update - Revert "Advandtage+ Shoppings Ads support in Advertise tab".
-
-= 3.0.34 - 2023-10-05 =
-* Add - Filter the size of the Facebook product image.
-* Fix - AddToCart duplication when other plugins clone cart.
-* Tweak - WC 8.2 compatibility.
-
-= 3.0.33 - 2023-09-05 =
-* Dev - Updates PHP unit tests matrix in git workflow and versions of dev dependencies in composer.
-* Fix - Issues with Facebook Sync status display while product filtering in admin.
-* Tweak - WC 8.1 compatibility.
-
-= 3.0.32 - 2023-08-18 =
-* Fix - Changes property access of product id from private to public.
-* Fix - Eliminates dynamic property creation deprecation warnings.
-* Fix - Update WPML compatibility to prevent fatal errors on PHP 8+.
-* Tweak - Bump Marketing API version to v17.0.
-* Tweak - Displays warnings on accessing private/protected properties incorrectly.
-
-= 3.0.31 - 2023-08-09 =
-* Dev - Filters Business Manager ID.
-* Fix - Fatal error when facebook_config option is empty.
-* Fix - WC_Facebookcommerce_Pixel::get_options() throwing a fatal error if facebook_config is invalid.
-* Tweak - Adds backward arrow to Facebook Product Sets backlink.
-* Tweak - Update product data options icon.
-* Tweak - WC 8.0 compatibility.
-* Tweak - WP 6.3 compatibility.
-
-= 3.0.30 - 2023-08-01 =
-* Dev - Add release preparation GH workflow.
-* Fix - Facebook sync for newly published product without Google product category.
-* Fix - Syncs products with All Caps title to Facebook and displays a warning in Facebook meta box.
-
-= 3.0.29 - 2023-07-18 =
-* Fix - Corrects backlink to 'Go to Facebook Product Sets' in success notice on Edit Facebook Product Sets page.
-* Tweak - Removes duplicate code.
-
-= 3.0.28 - 2023-07-13 =
-* Add - Priority to enhanced catalog attributes and display as per priority.
-* Fix - Woo category synced as Google Product category.
-
-= 3.0.27 - 2023-07-05 =
-* Fix - Products are deleted from facebook once changed to draft.
-
-= 3.0.26 - 2023-06-28 =
-* Tweak - WC 7.9 compatibility.
-
-= 3.0.25 - 2023-06-13 =
-* Fix - Fatal error when Facebook.net returns an empty response.
-* Fix - PHP Warning caused by array_filter() call.
-* Fix - Remove assigned Google product category at individual product level.
-* Tweak - WC 7.8 compatibility.
-
-= 3.0.24 - 2023-06-06 =
-* Fix - Product variants weren't deleted correctly from the Facebook catalog in some instances.
-
-= 3.0.23 - 2023-05-09 =
-* Fix - Delete product in the Facebook catalog when products are deleted via WC Rest API.
-
-= 3.0.22 - 2023-05-03 =
-* Fix - Pixel code not activated on checkout.
-
-= 3.0.21 - 2023-05-02 =
-* Fix - Issue in admin product search.
-
-= 3.0.20 - 2023-05-02 =
-* Fix - Adds escaping to outputs and sanitizing to inputs.
-* Tweak - WC 7.7 compatibility.
-
-= 3.0.19 - 2023-04-18 =
-* Tweak - Bump Marketing API version from v16.0.
-
-= 3.0.18 - 2023-04-11 =
-* Fix - Fatal error when facebook_config option is empty.
-* Fix - Selected categories not showing on Product Sets edit page.
-
-= 3.0.17 - 2023-04-05 =
-* Tweak - WC 7.6 compatibility.
-
-= 3.0.16 - 2023-03-21 =
-* Fix - Deprecation notices thrown by nonce_user_logged_out.
-* Fix - Display the Facebook tab and sync settings for external products.
-* Fix - viewContent events triggering PHP server notices on elementor sites.
-
-= 3.0.15 - 2023-03-14 =
-* Tweak - WC 7.5 compatibility.
-* Tweak - WP 6.2 compatibility.
-
-= 3.0.14 - 2023-03-02 =
-* Fix - Fatal error due to the latest WC Blocks changes.
-* Fix custom attribute name with special characters breaks sync.
-
-= 3.0.13 - 2023-02-28 =
-* Fix - WC()->session causing fatal error when the `woocommerce_add_to_cart_redirect` filter is called via REST API.
-
-= 3.0.12 - 2023-02-21 =
-* Fix - Replace is_ajax calls with wp_doing_ajax().
-* Fix - out-of-stock products not deleted in Facebook catalog.
-
-= 3.0.11 - 2023-02-14 =
-* Fix - Default sync mode on new product.
-
-= 3.0.10 - 2023-02-07 =
-* Add - Ping Meta server with the currently installed plugin version.
-* Fix - PHP 8.1 deprecated warnings.
-* Tweak - WC 7.4 compatibility.
-
-= 3.0.9 - 2023-01-31 =
-* Fix - CAPI purchase event not firing with orders from FB/Instagram app on iOS.
-* Fix - Setting a product's Facebook sync status to "Do not sync" not working.
-* Update - Onboarding task title and remove task content.
-
-= 3.0.8 - 2023-01-10 =
-* Add - Add support for Mix and Match containers with per-item pricing.
-* Dev - Fix phpcs violations in Framework/Api folder.
-* Tweak - Facebook Marketing API from v13.0 to v14.0.
-* Tweak - Use specific Bundles/Composites functions for calculating prices.
+= 3.1.6 - 2023-12-27 =
+* Fix - Facebook Pixel events missing on redirect to cart.
 
+= 3.1.5 - 2023-11-29 =
+* Fix - Remove mentions of shops.
+
+= 3.1.4 - 2023-11-25 =
+* Fix - Remove popup modal blocking product edit when product is using category excluded from sync.
+
+= 3.1.3 - 2023-11-07 =
+* Fix - Doc - Use new Woo.com domain.
+* Tweak - WC 8.3 compatibility.
+* Tweak - WP 6.4 compatibility.
+
+= 3.1.2 - 2023-10-19 =
+* Dev - Add phpcs on changed files only.
+
+= 3.1.1 - 2023-10-12 =
+* Update - Revert "Advandtage+ Shoppings Ads support in Advertise tab".
+
+= 3.0.34 - 2023-10-05 =
+* Add - Filter the size of the Facebook product image.
+* Fix - AddToCart duplication when other plugins clone cart.
+* Tweak - WC 8.2 compatibility.
+
+= 3.0.33 - 2023-09-05 =
+* Dev - Updates PHP unit tests matrix in git workflow and versions of dev dependencies in composer.
+* Fix - Issues with Facebook Sync status display while product filtering in admin.
+* Tweak - WC 8.1 compatibility.
+
+= 3.0.32 - 2023-08-18 =
+* Fix - Changes property access of product id from private to public.
+* Fix - Eliminates dynamic property creation deprecation warnings.
+* Fix - Update WPML compatibility to prevent fatal errors on PHP 8+.
+* Tweak - Bump Marketing API version to v17.0.
+* Tweak - Displays warnings on accessing private/protected properties incorrectly.
+
+= 3.0.31 - 2023-08-09 =
+* Dev - Filters Business Manager ID.
+* Fix - Fatal error when facebook_config option is empty.
+* Fix - WC_Facebookcommerce_Pixel::get_options() throwing a fatal error if facebook_config is invalid.
+* Tweak - Adds backward arrow to Facebook Product Sets backlink.
+* Tweak - Update product data options icon.
+* Tweak - WC 8.0 compatibility.
+* Tweak - WP 6.3 compatibility.
+
+= 3.0.30 - 2023-08-01 =
+* Dev - Add release preparation GH workflow.
+* Fix - Facebook sync for newly published product without Google product category.
+* Fix - Syncs products with All Caps title to Facebook and displays a warning in Facebook meta box.
+
+= 3.0.29 - 2023-07-18 =
+* Fix - Corrects backlink to 'Go to Facebook Product Sets' in success notice on Edit Facebook Product Sets page.
+* Tweak - Removes duplicate code.
+
+= 3.0.28 - 2023-07-13 =
+* Add - Priority to enhanced catalog attributes and display as per priority.
+* Fix - Woo category synced as Google Product category.
+
+= 3.0.27 - 2023-07-05 =
+* Fix - Products are deleted from facebook once changed to draft.
+
+= 3.0.26 - 2023-06-28 =
+* Tweak - WC 7.9 compatibility.
+
+= 3.0.25 - 2023-06-13 =
+* Fix - Fatal error when Facebook.net returns an empty response.
+* Fix - PHP Warning caused by array_filter() call.
+* Fix - Remove assigned Google product category at individual product level.
+* Tweak - WC 7.8 compatibility.
+
+= 3.0.24 - 2023-06-06 =
+* Fix - Product variants weren't deleted correctly from the Facebook catalog in some instances.
+
+= 3.0.23 - 2023-05-09 =
+* Fix - Delete product in the Facebook catalog when products are deleted via WC Rest API.
+
+= 3.0.22 - 2023-05-03 =
+* Fix - Pixel code not activated on checkout.
+
+= 3.0.21 - 2023-05-02 =
+* Fix - Issue in admin product search.
+
+= 3.0.20 - 2023-05-02 =
+* Fix - Adds escaping to outputs and sanitizing to inputs.
+* Tweak - WC 7.7 compatibility.
+
+= 3.0.19 - 2023-04-18 =
+* Tweak - Bump Marketing API version from v16.0.
+
+= 3.0.18 - 2023-04-11 =
+* Fix - Fatal error when facebook_config option is empty.
+* Fix - Selected categories not showing on Product Sets edit page.
+
+= 3.0.17 - 2023-04-05 =
+* Tweak - WC 7.6 compatibility.
+
+= 3.0.16 - 2023-03-21 =
+* Fix - Deprecation notices thrown by nonce_user_logged_out.
+* Fix - Display the Facebook tab and sync settings for external products.
+* Fix - viewContent events triggering PHP server notices on elementor sites.
+
+= 3.0.15 - 2023-03-14 =
+* Tweak - WC 7.5 compatibility.
+* Tweak - WP 6.2 compatibility.
+
+= 3.0.14 - 2023-03-02 =
+* Fix - Fatal error due to the latest WC Blocks changes.
+* Fix custom attribute name with special characters breaks sync.
+
+= 3.0.13 - 2023-02-28 =
+* Fix - WC()->session causing fatal error when the `woocommerce_add_to_cart_redirect` filter is called via REST API.
+
+= 3.0.12 - 2023-02-21 =
+* Fix - Replace is_ajax calls with wp_doing_ajax().
+* Fix - out-of-stock products not deleted in Facebook catalog.
+
+= 3.0.11 - 2023-02-14 =
+* Fix - Default sync mode on new product.
+
+= 3.0.10 - 2023-02-07 =
+* Add - Ping Meta server with the currently installed plugin version.
+* Fix - PHP 8.1 deprecated warnings.
+* Tweak - WC 7.4 compatibility.
+
+= 3.0.9 - 2023-01-31 =
+* Fix - CAPI purchase event not firing with orders from FB/Instagram app on iOS.
+* Fix - Setting a product's Facebook sync status to "Do not sync" not working.
+* Update - Onboarding task title and remove task content.
+
+= 3.0.8 - 2023-01-10 =
+* Add - Add support for Mix and Match containers with per-item pricing.
+* Dev - Fix phpcs violations in Framework/Api folder.
+* Tweak - Facebook Marketing API from v13.0 to v14.0.
+* Tweak - Use specific Bundles/Composites functions for calculating prices.
+
 = 3.0.7 - 2023-01-03 =
 * Dev - Add node and npm version restrictions.
 * Dev - Ease current node version restrictions.

diff --git a/facebook-commerce-events-tracker.php b/facebook-commerce-events-tracker.php
@@ -116,9 +116,8 @@ private function add_hooks() {
 			add_action( 'woocommerce_ajax_added_to_cart', array( $this, 'add_filter_for_add_to_cart_fragments' ) );
 			// AddToCart while using redirect to cart page
 			if ( 'yes' === get_option( 'woocommerce_cart_redirect_after_add', 'no' ) ) {
-				add_filter( 'woocommerce_add_to_cart_redirect', array( $this, 'set_last_product_added_to_cart_upon_redirect' ), 10, 2 );
-				add_action( 'woocommerce_ajax_added_to_cart', array( $this, 'set_last_product_added_to_cart_upon_ajax_redirect' ) );
-				add_action( 'woocommerce_after_cart', array( $this, 'inject_add_to_cart_redirect_event' ), 10, 2 );
+				add_action( 'wp_head', array( WC_Facebookcommerce_Utils::class, 'print_deferred_events' ) );
+				add_action( 'shutdown', array( WC_Facebookcommerce_Utils::class, 'save_deferred_events' ) );
 			}
 
 			// InitiateCheckout events
@@ -563,8 +562,12 @@ public function inject_add_to_cart_event( $cart_item_key, $product_id, $quantity
 				return;
 			}
 
+			/**
+			 * Make sure to proceed only if the cart item exists.
+			 * Some other plugins may clone the WC_Cart object. Calling clone APIs may trigger the 'woocommerce_add_to_cart' action.
+			 * We want to make sure to proceed only if the cart item exists inside the original WC_Cart object.
+			 */
 			$cart = WC()->cart;
-			// Check if we're dealing with cloned cart
 			if ( ! isset( $cart->cart_contents[ $cart_item_key ] ) ) {
 				return;
 			}
@@ -736,86 +739,6 @@ public function add_conditional_add_to_cart_event_fragment( $fragments ) {
 			return $fragments;
 		}
 
-
-		/**
-		 * Sets last product added to cart to session when adding to cart a product and redirection to cart is enabled.
-		 *
-		 * @internal
-		 *
-		 * @since 1.10.2
-		 *
-		 * @param string           $redirect URL redirecting to (usually cart)
-		 * @param null|\WC_Product $product the product just added to the cart
-		 * @return string
-		 */
-		public function set_last_product_added_to_cart_upon_redirect( $redirect, $product = null ) {
-
-			// Bail if the session variable has been set or WC()->session is null.
-			if ( ! isset( WC()->session ) || WC()->session->get( 'facebook_for_woocommerce_last_product_added_to_cart', 0 ) > 0 ) {
-				return $redirect;
-			}
-
-			$product_id = 0;
-
-			if ( $product instanceof \WC_Product ) {
-				$product_id = isset( $_POST['variation_id'] ) ?  wc_clean( wp_unslash( $_POST['variation_id'] ) ) : $product->get_id();
-			} elseif ( isset( $_GET['add-to-cart'] ) && is_numeric( wc_clean( wp_unslash( $_GET['add-to-cart'] ) ) ) ) {
-				$product_id = wc_clean( wp_unslash( $_GET['add-to-cart'] ) );
-			}
-
-			WC()->session->set( 'facebook_for_woocommerce_last_product_added_to_cart', (int) $product_id );
-
-			return $redirect;
-
-		}
-
-
-		/**
-		 * Sets last product added to cart to session when adding a product to cart from an archive page and both AJAX adding and redirection to cart are enabled.
-		 *
-		 * @internal
-		 *
-		 * @since 1.10.2
-		 *
-		 * @param null|int $product_id the ID of the product just added to the cart
-		 */
-		public function set_last_product_added_to_cart_upon_ajax_redirect( $product_id = null ) {
-
-			if ( ! $product_id ) {
-				facebook_for_woocommerce()->log( 'Cannot record AddToCart event because the product cannot be determined. Backtrace: ' . print_r( wp_debug_backtrace_summary(), true ) );
-				return;
-			}
-
-			$product = wc_get_product( $product_id );
-
-			if ( $product instanceof \WC_Product ) {
-				WC()->session->set( 'facebook_for_woocommerce_last_product_added_to_cart', $product->get_id() );
-			}
-		}
-
-
-		/**
-		 * Triggers an AddToCart event when redirecting to the cart page.
-		 *
-		 * @internal
-		 */
-		public function inject_add_to_cart_redirect_event() {
-
-			if ( ! $this->is_pixel_enabled() ) {
-				return;
-			}
-
-			$last_product_id = WC()->session->get( 'facebook_for_woocommerce_last_product_added_to_cart', 0 );
-
-			if ( $last_product_id > 0 ) {
-
-				$this->inject_add_to_cart_event( '', $last_product_id, 1, 0 );
-
-				WC()->session->set( 'facebook_for_woocommerce_last_product_added_to_cart', 0 );
-			}
-		}
-
-
 		/**
 		 * Triggers an InitiateCheckout event when customer reaches checkout page.
 		 *