Deletes product images when a WooCommerce product is permanently deleted

code.php

<?php

function lpb_purge_product_images ( $id ) {
	if ( ! function_exists( 'wc_get_product' ) ) return; // prevent fatal errors

	$product = wc_get_product( $id );
	if ( ! $product ) return;

	$image_id = $product->get_image_id();
	if ( $image_id ) {
		error_log( "Deleting product #{$id} main image..." );
		wp_delete_attachment( $image_id, true );
	}

	$gallery = $product->get_gallery_image_ids();
	if ( is_array( $gallery ) && count( $gallery ) > 0 ) {
		error_log( "Deleting product #{$id} gallery images..." );
		foreach ( $gallery as $image_id ) {
			wp_delete_attachment( $image_id, true );
		}
	}
}
add_action( 'before_delete_post', 'lpb_purge_product_images' );