Display promotion message on product page before add to cart form

Show promotional messages on product pages before the add to cart form.

// To display promotion message on product page before add to cart form
add_action('advanced_woo_discount_rules_after_initialize', function () {
    if (class_exists('\Wdr\App\Router')) {
        if (has_action('woocommerce_before_single_product', array(\Wdr\App\Router::$manage_discount, 'displayPromotionMessages'), 10)) {
            remove_action('woocommerce_before_single_product', array(\Wdr\App\Router::$manage_discount, 'displayPromotionMessages'), 10);
            add_action('woocommerce_before_add_to_cart_form', array(\Wdr\App\Router::$manage_discount, 'displayPromotionMessages'), 10);
        }
    }
});