PP Content Grid - Add WooCommerce Sorting drop-down

code.php

// Add sort by Title.
add_filter( 'woocommerce_catalog_orderby', 'custom_sorting_options_wc', 99 );
add_filter( 'woocommerce_default_catalog_orderby_options', 'custom_sorting_options_wc', 99 );
function custom_sorting_options_wc( $order_by ) {
	$new_options = array(
		'title' => __( 'Sort by Name: A to Z' ),
		'title-desc' => __( 'Sort by Name: Z to A' ),
	);
	
	$order_by = array_merge( $order_by, $new_options );
	
	return $order_by;
}

// Add sorting drop-down before posts.
add_action('pp_cg_before_posts', function ($settings, $query) {
	if ('cg-with-sorting' === $settings->id && function_exists('woocommerce_catalog_ordering')) {
		woocommerce_catalog_ordering();
	}
}, 10, 2);

// Sorting logic.
add_action('pre_get_posts', function ($query) {
	if ( is_admin() || ! $query->is_main_query() ) {
		return;
	}
	
	if ( isset( $_GET['orderby'] ) && ! empty( $_GET['orderby'] ) && $query->get('fl_builder_loop') ) {
		$orderby_value = wc_clean( (string) $_GET['orderby'] );
		$orderby_value = explode( '-', $orderby_value );
		$orderby = esc_attr($orderby_value[0]);
		$order = ! empty( $orderby_value[1] ) ? $orderby_value[1] : 'asc';

		switch ( $orderby ) {
			case 'popularity':
				$query->set('meta_key', 'total_sales');
				$query->set('orderby', 'meta_value_num');
				$query->set('order', 'DESC');
				break;
			case 'price':
				$query->set('meta_key', '_price');
				$query->set('orderby', 'meta_value_num');
				if ('desc' == $order) {
					$query->set('order', 'DESC');
				} else {
					$query->set('order', 'ASC');
				}
				break;
			case 'title':
				$query->set('orderby', 'title');
				if ('desc' == $order) {
					$query->set('order', 'DESC');
				} else {
					$query->set('order', 'ASC');
				}
				break;
			case 'rating':
				$query->set('meta_key', '_wc_average_rating');
				$query->set('orderby', 'meta_value_num');
				$query->set('order', 'DESC');
				break;
			case 'date':
				$query->set('orderby', 'date ID');
				$query->set('order', ( 'asc' === $order ) ? 'ASC' : 'DESC');
				break;
			default:
				break;
		}
	}
} );