Woocommerce Product Singular vs Archive classes

wcpc.php

<?php 
function fb_1398591523488596( $classes, $class, $post_id ) {

	if ( 'product' == get_post_type( $post_id ) ) {
		if ( is_singular( 'product' ) ) {
			$classes[] = "post-class-when-viewing-single-product";
		} else {
			$classes[] = "non-single-product-page-class"
		}
	}

	
	return $classes;
}
add_filter( 'post_class', 'fb_1398591523488596', 10, 3 );