Facebook for WooCommerce: Track AddToCart events even if using third-party add-to-cart redirect plugin

sv_fb_for_woocommerce_add_add_to_cart_actions_if_using_addtocart_redirect_plugin.php

<?php // copy only if required!
/*
 * If using the add to cart redirect plugin: https://woocommerce.com/products/woocommerce-add-cart-redirect/
 * This will still add the necessary actions to track AddToCart events with the Facebook pixel
 */
function sv_fb_for_woocommerce_add_to_cart_redirect_plugin_compatibility() {
	
	if ( function_exists( 'facebook_for_woocommerce' ) ) {
		
		$events_tracker = facebook_for_woocommerce()->get_integration()->events_tracker;

		if ( (bool) get_option( 'woo_cart_redirect_to_page' ) ) {
			add_filter( 'woocommerce_add_to_cart_redirect', [ $events_tracker, 'set_last_product_added_to_cart_upon_redirect' ], 10, 2 );
			add_action( 'woocommerce_ajax_added_to_cart',   [ $events_tracker, 'set_last_product_added_to_cart_upon_ajax_redirect' ] );
			add_action( 'woocommerce_after_cart',           [ $events_tracker, 'inject_add_to_cart_redirect_event' ], 10, 2 );
		}
	}
}

add_action( 'init', 'sv_fb_for_woocommerce_add_to_cart_redirect_plugin_compatibility' );