<?php
/*
Plugin Name: Delete product images for WooCommerce
Plugin URI: https://uprise.ro
Description: Removes product assigned images (featured and gallery only) on product delete.
Requires at least: 4.7
Tested up to: 5.4
Stable tag: trunk
Requires PHP: 7.0
Version: 1.1
Author: Eduard V. Doloc
Author Email: eduard@uprise.ro
*/

//check if wc is active
if ( in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {

//hooking into WP event
	add_action( 'before_delete_post', 'wc_delete_product_images', 10, 1 );

	function wc_delete_product_images( $post_id ) {
		//get product id
		$product = wc_get_product( $post_id );

		//failsafe
		if ( ! $product ) {
			return;
		}

		//get images
		$featured_image_id  = $product->get_image_id();
		$image_galleries_id = $product->get_gallery_image_ids();

		//delete featured (check first if empty)s
		if ( ! empty( $featured_image_id ) ) {
			wp_delete_post( $featured_image_id );
		}

		//delete gallery/attachment (check first if empty)
		if ( ! empty( $image_galleries_id ) ) {
			foreach ( $image_galleries_id as $single_image_id ) {
				wp_delete_post( $single_image_id );
			}
		}
	}
}
//@todo: create config for multiple CPTs