.-.-.-.-.-

<?php
/**
 * Author:     Convergine (http://www.convergine.com)
 * Website:    http://www.convergine.com
 * Support:    http://support.convergine.com
 * Version:    commerce4.repo
 *
 * Copyright:   (c) 2009 - 2023  Convergine.com
 *
 * Date: 6/16/2023
 * Time: 1:07 PM
 */

namespace modules\adjusters;
use craft\base\Component;
use craft\commerce\base\AdjusterInterface;
use craft\commerce\elements\Order;
use craft\commerce\models\OrderAdjustment;

class OrderAdjuster  extends Component implements AdjusterInterface{

public function adjust(Order $order):array{
		$adjustments = [];
		//);
		$shipping = $order->getShippingAddress();
		if(/*$shipping*/0){
			//\Craft::dump($order->getShippingAddress());
			//$order->shippingMethodHandle='freeShipping';
			//\Craft::$app->getElements()->saveElement($order, false, false, false);

$adjustment = new OrderAdjustment;
			$adjustment->type = 'shipping';
			$adjustment->amount = 0.5;

$adjustment->name = 'Custom Shipping';
			$adjustment->description = '';
			$adjustment->sourceSnapshot = [ 'rate' => 0.5 ];

$adjustment->setOrder($order);

$adjustments[] = $adjustment;
		}

return $adjustments;
	}
}

/srv/users/craft4/apps/craft4-newsite-space/public/.././modules/./adjusters/./OrderAdjuster.php