add price feature

src/EventListener/OrderItemPreFlush.php

@@ -0,0 +1,52 @@
+<?php declare(strict_types=1);
+
+namespace App\EventListener;
+
+use App\Entity\MenuItem;
+use App\Entity\OrderItem;
+use App\Repository\MenuItemRepository;
+use Doctrine\Bundle\DoctrineBundle\Attribute\AsDoctrineListener;
+use Doctrine\ORM\Event\PreFlushEventArgs;
+use Doctrine\ORM\Events;
+use Doctrine\Persistence\ObjectManager;
+
+#[AsDoctrineListener(event: Events::preFlush)]
+final readonly class OrderItemPreFlush
+{
+    public function __construct(
+        private MenuItemRepository $menuItemRepository,
+    ) {}
+
+    public function preFlush(PreFlushEventArgs $eventArgs): void
+    {
+        foreach (($eventArgs->getObjectManager()->getUnitOfWork()->getIdentityMap()[OrderItem::class] ?? []) as $orderItem) {
+            $this->checkOrderItem($orderItem, $eventArgs->getObjectManager());
+        }
+    }
+
+    private function checkOrderItem(OrderItem $orderItem, ObjectManager $objectManager): void
+    {
+        $menuItem = $this->menuItemRepository->findOneBy([
+            'name' => $orderItem->getName(),
+            'foodVendor' => $orderItem->getFoodOrder()
+                ->getFoodVendor(),
+        ]);
+        if ($menuItem === null) {
+            $menuItem = new MenuItem;
+            $menuItem->setName($orderItem->getName());
+            $menuItem->setFoodVendor($orderItem->getFoodOrder()->getFoodVendor());
+            $objectManager->persist($menuItem);
+        }
+        if ($menuItem->getAliasOf() !== null) {
+            $menuItem = $menuItem->getAliasOf();
+            $orderItem->setName($menuItem->getName());
+        }
+        $orderItem->setMenuItem($menuItem);
+        if ($orderItem->getPriceCents() === 0) {
+            $orderItem->setPriceCents($menuItem->getPriceCents());
+        } elseif ($orderItem->getPriceCents() !== $menuItem->getPriceCents()) {
+            $menuItem->setPriceCents($orderItem->getPriceCents());
+            $objectManager->persist($menuItem);
+        }
+    }
+}