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vendor/symfony/mailer/Transport/Transports.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mailer\Transport;
+
+use Symfony\Component\Mailer\Envelope;
+use Symfony\Component\Mailer\Exception\InvalidArgumentException;
+use Symfony\Component\Mailer\Exception\LogicException;
+use Symfony\Component\Mailer\SentMessage;
+use Symfony\Component\Mime\Message;
+use Symfony\Component\Mime\RawMessage;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+final class Transports implements TransportInterface
+{
+    /**
+     * @var array<string, TransportInterface>
+     */
+    private array $transports = [];
+    private TransportInterface $default;
+
+    /**
+     * @param iterable<string, TransportInterface> $transports
+     */
+    public function __construct(iterable $transports)
+    {
+        foreach ($transports as $name => $transport) {
+            $this->default ??= $transport;
+            $this->transports[$name] = $transport;
+        }
+
+        if (!$this->transports) {
+            throw new LogicException(sprintf('"%s" must have at least one transport configured.', __CLASS__));
+        }
+    }
+
+    public function send(RawMessage $message, ?Envelope $envelope = null): ?SentMessage
+    {
+        /** @var Message $message */
+        if (RawMessage::class === $message::class || !$message->getHeaders()->has('X-Transport')) {
+            return $this->default->send($message, $envelope);
+        }
+
+        $headers = $message->getHeaders();
+        $transport = $headers->get('X-Transport')->getBody();
+        $headers->remove('X-Transport');
+
+        if (!isset($this->transports[$transport])) {
+            throw new InvalidArgumentException(sprintf('The "%s" transport does not exist (available transports: "%s").', $transport, implode('", "', array_keys($this->transports))));
+        }
+
+        try {
+            return $this->transports[$transport]->send($message, $envelope);
+        } catch (\Throwable $e) {
+            $headers->addTextHeader('X-Transport', $transport);
+
+            throw $e;
+        }
+    }
+
+    public function __toString(): string
+    {
+        return '['.implode(',', array_keys($this->transports)).']';
+    }
+}