feat: markdown in email body for mailing and transactional

src/Service/Teamer/TeamerMailingService.php

@@ -2,6 +2,7 @@
 
 namespace App\Service\Teamer;
 
+use App\Email\MailBodyRenderer;
 use App\Email\Mailer;
 use App\Entity\User;
 use App\Message\SendTeamerMailing;
@@ -37,6 +38,7 @@ class TeamerMailingService
     public function __construct(
         private readonly TeamerRepository $teamerRepository,
         private readonly Mailer $mailer,
+        private readonly MailBodyRenderer $mailBodyRenderer,
         private readonly LoggerInterface $logger,
         // messenger transport, "mailing" in production and "sync" in dev and test,
         // see the parameter of the same name in services.yaml
@@ -98,7 +100,7 @@ class TeamerMailingService
             $this->sendTo(
                 $recipient['email'],
                 $this->render($mailing->getSubject(), $values),
-                $this->render($mailing->getMessage(), $values),
+                $this->mailBodyRenderer->render($mailing->getMessage(), $values),
                 self::TRANSPORT,
                 $this->mailingBusTransport
             );
@@ -121,7 +123,7 @@ class TeamerMailingService
         $this->sendTo(
             $admin->getUserIdentifier(),
             self::PREVIEW_SUBJECT_PREFIX.$this->render($mailingDto->getSubject(), $values),
-            $this->render($mailingDto->getMessage(), $values)
+            $this->mailBodyRenderer->render($mailingDto->getMessage(), $values)
         );
 
         $this->logger->info('Send teamer mailing preview', [
@@ -131,8 +133,10 @@ class TeamerMailingService
     }
 
     /**
-     * Replace the known placeholders. Anything that merely looks like a placeholder is
-     * left alone - a typo should not silently blank out part of the mail.
+     * Replace the known placeholders in a subject line. Anything that merely looks like a
+     * placeholder is left alone - a typo should not silently blank out part of the mail.
+     * The message body does not come through here: it is Markdown, and
+     * App\Email\MailBodyRenderer has to escape the values before it puts them in.
      */
     public function render(?string $text, array $values): string
     {
@@ -195,12 +199,14 @@ class TeamerMailingService
     private function sendTo(
         string $email,
         string $subject,
-        string $message,
+        string $bodyHtml,
         ?string $transport = null,
         ?string $busTransport = null,
     ): void {
+        // $bodyHtml is already rendered and escaped mail HTML, see MailBodyRenderer -
+        // email/teamer_mailing.html.twig prints it with |raw.
         $this->mailer->createAndSendEmail([
-            'message' => $message,
+            'bodyHtml' => $bodyHtml,
         ], [
             'to' => $email,
             'subject' => $subject,