WIP: Add email notifications

src/Email/Mailer.php

@@ -0,0 +1,97 @@
+<?php
+
+namespace App\Email;
+
+use App\Model\EmailAttachmentDto;
+use Psr\Log\LoggerInterface;
+use Symfony\Bridge\Twig\Mime\TemplatedEmail;
+use Symfony\Component\Mailer\Exception\TransportExceptionInterface;
+use Symfony\Component\Mailer\MailerInterface;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Contracts\Translation\TranslatorInterface;
+
+class Mailer
+{
+    public function __construct(
+        private readonly MailerInterface $mailer,
+        private readonly TranslatorInterface $translator,
+        private readonly array $defaults,
+        private readonly LoggerInterface $logger
+    ) {
+    }
+
+    public function createAndSendEmail(array $context, array $options): void
+    {
+        $config = $this->resolveConfig($options);
+        $email = $this->create($context, $config);
+
+        $recipients = (array) $config['to'];
+
+        foreach ($recipients as $recipient) {
+            $email->to($recipient);
+            $this->send($email);
+        }
+    }
+
+    public function create(array $context, array $config): TemplatedEmail
+    {
+        $email = (new TemplatedEmail())
+            ->from($config['from'])
+            ->subject($this->translator->trans($config['subject'], $config['subject_parameters']))
+            ->htmlTemplate($config['template'])
+            ->context($context)
+        ;
+
+        foreach ($config['attachments'] as $attachment) {
+            /* @var EmailAttachmentDto $attachment */
+            $email->attach($attachment->getContent(), $attachment->getName(), $attachment->getMimeType());
+        }
+
+        return $email;
+    }
+
+    public function send(TemplatedEmail $email): void
+    {
+        $recipients = array_map(fn (Address $address) => $address->toString(), $email->getTo());
+
+        try {
+            $this->mailer->send($email);
+            $this->logger->info('Send email', [
+                'to' => $recipients,
+                'subject' => $email->getSubject(),
+            ]);
+        } catch (TransportExceptionInterface $e) {
+            $this->logger->error('Email could not be sent', [
+                'to' => $recipients,
+                'subject' => $email->getSubject(),
+                'error' => $e->getMessage(),
+            ]);
+        }
+    }
+
+    private function resolveConfig(array $options): array
+    {
+        $resolver = new OptionsResolver();
+
+        $resolver
+            ->setDefaults([
+                'from' => $this->defaults['from'],
+                'to' => $this->defaults['to'],
+                'subject_parameters' => [],
+                'attachments' => [],
+            ])
+            ->setRequired([
+                'template',
+                'subject',
+            ])
+            ->setAllowedTypes('to', ['string', 'array'])
+            ->setAllowedTypes('template', 'string')
+            ->setAllowedTypes('subject', 'string')
+            ->setAllowedTypes('subject_parameters', 'array')
+            ->setAllowedTypes('attachments', 'array')
+        ;
+
+        return $resolver->resolve($options);
+    }
+}

src/Email/WelcomeEmailMailer.php

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+<?php
+
+namespace App\Email;
+
+use App\Entity\User;
+use Psr\Log\LoggerInterface;
+
+class WelcomeEmailMailer
+{
+    public function __construct(private readonly Mailer $mailer, private readonly LoggerInterface $logger)
+    {}
+
+    public function send(User $user): void
+    {
+        $this->mailer->createAndSendEmail([
+            'user' => $user,
+        ], [
+            'to' => $user->getEmail(),
+            'subject' => 'Willkommen bei MyE&P Team',
+            'template' => 'email/welcome.html.twig',
+        ]);
+
+        $this->logger->info('Send welcome email', [
+            'user_id' => $user->getId(),
+            'user_email' => $user->getEmail(),
+        ]);
+    }
+}

src/Model/EmailAttachmentDto.php

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+<?php
+
+namespace App\Model;
+
+class EmailAttachmentDto
+{
+    public function __construct(private string $name, private string $content, private string $mimeType)
+    {
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function getContent(): string
+    {
+        return $this->content;
+    }
+
+    public function getMimeType(): string
+    {
+        return $this->mimeType;
+    }
+}