feat: MailJet list handling with DOI, webhook receiver and API endpoint

addresses #869cut134

src/MessageHandler/MailjetNewsletterEventHandler.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\MessageHandler;
+
+use App\Entity\NewsletterConsent;
+use App\Message\MailjetNewsletterEventMessage;
+use App\Repository\NewsletterConsentRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Messenger\Attribute\AsMessageHandler;
+
+#[AsMessageHandler]
+final class MailjetNewsletterEventHandler
+{
+    public function __construct(
+        private readonly NewsletterConsentRepository $consentRepository,
+        private readonly EntityManagerInterface $entityManager,
+    ) {
+    }
+
+    public function __invoke(MailjetNewsletterEventMessage $message): void
+    {
+        if (MailjetNewsletterEventMessage::EVENT_UNSUBSCRIBE !== $message->event) {
+            return;
+        }
+
+        $consent = $this->consentRepository->findOneByEmailAndListId($message->email, $message->mailjetListId);
+        if (null === $consent) {
+            $consent = new NewsletterConsent($message->email, $message->mailjetListId);
+            $this->entityManager->persist($consent);
+        }
+
+        $revokedAt = $message->eventAt ?? new \DateTimeImmutable();
+        if (null === $message->eventAt && null !== $consent->getRevokedAt()) {
+            return;
+        }
+
+        if (null !== $message->eventAt && null !== $consent->getConfirmedAt() && $consent->getConfirmedAt() > $message->eventAt) {
+            return;
+        }
+
+        if (null !== $consent->getRevokedAt() && $consent->getRevokedAt() >= $revokedAt) {
+            return;
+        }
+
+        $consent->markRevoked($revokedAt);
+        $this->entityManager->flush();
+    }
+}