Erweiterungstätigkeiten zur IPN-Vorschlagsliste anhand von Präfixen aus den Kategorien

src/EventSubscriber/UserSystem/PartUniqueIpnSubscriber.php

@@ -0,0 +1,73 @@
+<?php
+
+namespace App\EventSubscriber\UserSystem;
+
+use App\Entity\Parts\Part;
+use Doctrine\Common\EventSubscriber;
+use Doctrine\Persistence\Event\LifecycleEventArgs;
+use Doctrine\ORM\Events;
+use Doctrine\ORM\EntityManagerInterface;
+
+class PartUniqueIpnSubscriber implements EventSubscriber
+{
+    public function __construct(
+        private EntityManagerInterface $entityManager,
+        private readonly bool $enforceUniqueIpn = false
+    ) {
+    }
+
+    public function getSubscribedEvents(): array
+    {
+        return [
+            Events::prePersist,
+            Events::preUpdate,
+        ];
+    }
+
+    public function prePersist(LifecycleEventArgs $args): void
+    {
+        $entity = $args->getObject();
+
+        if ($entity instanceof Part) {
+            $this->ensureUniqueIpn($entity);
+        }
+    }
+
+    public function preUpdate(LifecycleEventArgs $args): void
+    {
+        $entity = $args->getObject();
+
+        if ($entity instanceof Part) {
+            $this->ensureUniqueIpn($entity);
+        }
+    }
+
+    private function ensureUniqueIpn(Part $part): void
+    {
+        if ($part->getIpn() === null || $part->getIpn() === '') {
+            return;
+        }
+
+        $existingPart = $this->entityManager
+            ->getRepository(Part::class)
+            ->findOneBy(['ipn' => $part->getIpn()]);
+
+        if ($existingPart && $existingPart->getId() !== $part->getId()) {
+            if ($this->enforceUniqueIpn) {
+                return;
+            }
+
+            // Anhang eines Inkrements bis ein einzigartiger Wert gefunden wird
+            $increment = 1;
+            $originalIpn = $part->getIpn();
+
+            while ($this->entityManager
+                ->getRepository(Part::class)
+                ->findOneBy(['ipn' => $originalIpn . "_$increment"])) {
+                $increment++;
+            }
+
+            $part->setIpn($originalIpn . "_$increment");
+        }
+    }
+}