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vendor/symfony/mailer/Envelope.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;
+
+use Symfony\Component\Mailer\Exception\InvalidArgumentException;
+use Symfony\Component\Mailer\Exception\LogicException;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Mime\RawMessage;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Envelope
+{
+    private Address $sender;
+    private array $recipients = [];
+
+    /**
+     * @param Address[] $recipients
+     */
+    public function __construct(Address $sender, array $recipients)
+    {
+        $this->setSender($sender);
+        $this->setRecipients($recipients);
+    }
+
+    public static function create(RawMessage $message): self
+    {
+        if (RawMessage::class === $message::class) {
+            throw new LogicException('Cannot send a RawMessage instance without an explicit Envelope.');
+        }
+
+        return new DelayedEnvelope($message);
+    }
+
+    public function setSender(Address $sender): void
+    {
+        // to ensure deliverability of bounce emails independent of UTF-8 capabilities of SMTP servers
+        if (!preg_match('/^[^@\x80-\xFF]++@/', $sender->getAddress())) {
+            throw new InvalidArgumentException(sprintf('Invalid sender "%s": non-ASCII characters not supported in local-part of email.', $sender->getAddress()));
+        }
+        $this->sender = $sender;
+    }
+
+    /**
+     * @return Address Returns a "mailbox" as specified by RFC 2822
+     *                 Must be converted to an "addr-spec" when used as a "MAIL FROM" value in SMTP (use getAddress())
+     */
+    public function getSender(): Address
+    {
+        return $this->sender;
+    }
+
+    /**
+     * @param Address[] $recipients
+     */
+    public function setRecipients(array $recipients): void
+    {
+        if (!$recipients) {
+            throw new InvalidArgumentException('An envelope must have at least one recipient.');
+        }
+
+        $this->recipients = [];
+        foreach ($recipients as $recipient) {
+            if (!$recipient instanceof Address) {
+                throw new InvalidArgumentException(sprintf('A recipient must be an instance of "%s" (got "%s").', Address::class, get_debug_type($recipient)));
+            }
+            $this->recipients[] = new Address($recipient->getAddress());
+        }
+    }
+
+    /**
+     * @return Address[]
+     */
+    public function getRecipients(): array
+    {
+        return $this->recipients;
+    }
+}