feat: fragment messages to gain efficiency

src/MessageHandler/ProcessWatchListTriggerHandler.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace App\MessageHandler;
+
+use App\Entity\Domain;
+use App\Entity\User;
+use App\Entity\WatchList;
+use App\Message\ProcessDomainTrigger;
+use App\Message\ProcessWatchListTrigger;
+use App\Repository\WatchListRepository;
+use App\Service\RDAPService;
+use DateTimeImmutable;
+use Exception;
+use Symfony\Bridge\Twig\Mime\TemplatedEmail;
+use Symfony\Component\Mailer\Exception\TransportExceptionInterface;
+use Symfony\Component\Mailer\MailerInterface;
+use Symfony\Component\Messenger\Attribute\AsMessageHandler;
+use Symfony\Component\Messenger\Exception\ExceptionInterface;
+use Symfony\Component\Messenger\MessageBusInterface;
+use Throwable;
+
+#[AsMessageHandler]
+final readonly class ProcessWatchListTriggerHandler
+{
+
+    public function __construct(
+        private RDAPService         $RDAPService,
+        private MailerInterface     $mailer,
+        private string              $mailerSenderEmail,
+        private MessageBusInterface $bus,
+        private WatchListRepository $watchListRepository
+    )
+    {
+    }
+
+    /**
+     * @throws TransportExceptionInterface
+     * @throws Exception
+     * @throws ExceptionInterface
+     */
+    public function __invoke(ProcessWatchListTrigger $message): void
+    {
+        /** @var WatchList $watchList */
+        $watchList = $this->watchListRepository->findOneBy(["token" => $message->watchListToken]);
+        /** @var Domain $domain */
+        foreach ($watchList->getDomains()
+                     ->filter(fn($domain) => $domain->getUpdatedAt()
+                             ->diff(new DateTimeImmutable('now'))->days >= 7) as $domain
+        ) {
+            $updatedAt = $domain->getUpdatedAt();
+
+            try {
+                $domain = $this->RDAPService->registerDomain($domain->getLdhName());
+            } catch (Throwable) {
+                $this->sendEmailDomainUpdateError($domain, $watchList->getUser());
+                continue;
+            }
+
+            $this->bus->dispatch(new ProcessDomainTrigger($watchList->getToken(), $domain->getLdhName(), $updatedAt));
+        }
+    }
+
+
+    /**
+     * @throws TransportExceptionInterface
+     */
+    private function sendEmailDomainUpdateError(Domain $domain, User $user): void
+    {
+        $email = (new TemplatedEmail())
+            ->from($this->mailerSenderEmail)
+            ->to($user->getEmail())
+            ->subject('An error occurred while updating a domain name')
+            ->htmlTemplate('emails/errors/domain_update.html.twig')
+            ->locale('en')
+            ->context([
+                "domain" => $domain
+            ]);
+
+        $this->mailer->send($email);
+    }
+
+}