Cancel order in Peak WMS when order is cancelled in Sylius

src/EventSubscriber/HandleOrderCancellationSubscriber.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Setono\SyliusPeakPlugin\EventSubscriber;
+
+use Setono\PeakWMS\Client\ClientInterface;
+use Setono\SyliusPeakPlugin\Model\OrderInterface;
+use SM\Event\SMEvents;
+use SM\Event\TransitionEvent;
+use Sylius\Component\Order\OrderTransitions;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+final class HandleOrderCancellationSubscriber implements EventSubscriberInterface
+{
+    public function __construct(private readonly ClientInterface $client)
+    {
+    }
+
+    public static function getSubscribedEvents(): array
+    {
+        return [
+            SMEvents::POST_TRANSITION => 'handleOrderCancellation',
+        ];
+    }
+
+    public function handleOrderCancellation(TransitionEvent $event): void
+    {
+        $obj = $event->getStateMachine()->getObject();
+        if (!$obj instanceof OrderInterface) {
+            return;
+        }
+
+        if ($event->getTransition() !== OrderTransitions::TRANSITION_CANCEL) {
+            return;
+        }
+
+        if ($obj->getPeakUploadOrderRequest()?->getPeakOrderId() === null) {
+            return;
+        }
+
+        $this->client->salesOrder()->cancel((string) $obj->getId());
+    }
+}

src/Resources/config/services/event_subscriber.xml

@@ -23,6 +23,12 @@
             <tag name="kernel.event_subscriber"/>
         </service>
 
+        <service id="Setono\SyliusPeakPlugin\EventSubscriber\HandleOrderCancellationSubscriber">
+            <argument type="service" id="Setono\PeakWMS\Client\ClientInterface"/>
+
+            <tag name="kernel.event_subscriber"/>
+        </service>
+
         <!-- Workflow: Inventory Update -->
         <service id="Setono\SyliusPeakPlugin\EventSubscriber\Workflow\InventoryUpdate\CompleteSubscriber">
             <tag name="kernel.event_subscriber"/>