Automatically Complete Virtual and Downloadable Orders In WooCommerce

/**
 *
 *	@author 	Christopher Davies, WP Davies
 *	@link 		https://wpdavies.dev/
 *	@link 		https://wpdavies.dev/automatically-complete-virtual-orders-woocommerce/
 *	@snippet 	Automatically complete orders in WooCommerce
 *
 */
add_action('woocommerce_thankyou', 'wpd_autocomplete_virtual_orders', 10, 1 );
function wpd_autocomplete_virtual_orders( $order_id ) {

    if( ! $order_id ) return;

    // Get order
    $order = wc_get_order( $order_id );

    // get order items = each product in the order
    $items = $order->get_items();

    // Set variable
    $only_virtual = true;

    foreach ( $items as $item ) {
    	
        // Get product id
        $product = wc_get_product( $item['product_id'] );

        // Is virtual
        $is_virtual = $product->is_virtual();

        // Is_downloadable
        $is_downloadable = $product->is_downloadable();

        if ( ! $is_virtual && ! $is_downloadable  ) {

            $only_virtual = false;

        }

    }

    // true
    if ( $only_virtual ) {

        $order->update_status( 'completed' );

    }
}