<?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\Mime\Part\Multipart; use Symfony\Component\Mime\Part\AbstractMultipartPart; use Symfony\Component\Mime\Part\AbstractPart; /** * @author Fabien Potencier <fabien@symfony.com> */ final class RelatedPart extends AbstractMultipartPart { private $mainPart; public function __construct(AbstractPart $mainPart, AbstractPart $part, AbstractPart ...$parts) { $this->mainPart = $mainPart; $this->prepareParts($part, ...$parts); parent::__construct($part, ...$parts); } public function getParts(): array { return array_merge([$this->mainPart], parent::getParts()); } public function getMediaSubtype(): string { return 'related'; } private function generateContentId(): string { return bin2hex(random_bytes(16)).'@symfony'; } private function prepareParts(AbstractPart ...$parts): void { foreach ($parts as $part) { if (!$part->getHeaders()->has('Content-ID')) { $part->getHeaders()->setHeaderBody('Id', 'Content-ID', $this->generateContentId()); } } } }