Apply recount term per product with filter to product data store

includes/data-stores/class-wc-product-data-store-cpt.php

@@ -710,6 +710,41 @@ class WC_Product_Data_Store_CPT extends WC_Data_Store_WP implements WC_Object_Da
 		if ( $force || array_key_exists( 'shipping_class_id', $changes ) ) {
 			wp_set_post_terms( $product->get_id(), array( $product->get_shipping_class_id( 'edit' ) ), 'product_shipping_class', false );
 		}
+
+		/**
+		 * Filter to allow/prevent recounting of terms as it could be expensive.
+		 * A likely scenario for this is when bulk importing products. We could
+		 * then prevent it from recounting per product but instead recount it once
+		 * when import is done. Of course this means the import logic has to support this.
+		 *
+		 * @since 5.2
+		 * @param bool
+		 */
+		if ( apply_filters( 'woocommerce_product_update_recount_terms', '__return_true' ) ) {
+			$product_terms = get_the_terms( $product->get_id(), 'product_cat' );
+
+			if ( $product_terms ) {
+				$product_cats = array();
+
+				foreach ( $product_terms as $term ) {
+					$product_cats[ $term->term_id ] = $term->parent;
+				}
+
+				_wc_term_recount( $product_cats, get_taxonomy( 'product_cat' ), false, false );
+			}
+
+			$product_terms = get_the_terms( $product->get_id(), 'product_tag' );
+
+			if ( $product_terms ) {
+				$product_tags = array();
+
+				foreach ( $product_terms as $term ) {
+					$product_tags[ $term->term_id ] = $term->parent;
+				}
+
+				_wc_term_recount( $product_tags, get_taxonomy( 'product_tag' ), false, false );
+			}
+		}
 	}
 
 	/**