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application/Espo/Tools/Email/ImportEmlService.php

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+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Tools\Email;
+
+use Espo\Core\Exceptions\Conflict;
+use Espo\Core\Exceptions\Error;
+use Espo\Core\Exceptions\NotFound;
+use Espo\Core\FileStorage\Manager;
+use Espo\Core\Mail\Importer;
+use Espo\Core\Mail\Importer\Data;
+use Espo\Core\Mail\MessageWrapper;
+use Espo\Core\Mail\Parsers\MailMimeParser;
+use Espo\Entities\Attachment;
+use Espo\Entities\Email;
+use Espo\ORM\EntityManager;
+
+class ImportEmlService
+{
+    public function __construct(
+        private Importer $importer,
+        private Importer\DuplicateFinder $duplicateFinder,
+        private EntityManager $entityManager,
+        private Manager $fileStorageManager,
+        private MailMimeParser $parser,
+    ) {}
+
+    /**
+     * Import an EML.
+     *
+     * @param string $fileId An attachment ID.
+     * @param ?string $userId A user ID to relate an email with.
+     * @return Email An Email.
+     * @throws NotFound
+     * @throws Error
+     * @throws Conflict
+     */
+    public function import(string $fileId, ?string $userId = null): Email
+    {
+        $attachment = $this->getAttachment($fileId);
+        $contents = $this->fileStorageManager->getContents($attachment);
+
+        $message = new MessageWrapper(1, null, $this->parser, $contents);
+
+        $this->checkDuplicate($message);
+
+        $email = $this->importer->import($message, Data::create());
+
+        if (!$email) {
+            throw new Error("Could not import.");
+        }
+
+        if ($userId) {
+            $this->entityManager->getRDBRepositoryByClass(Email::class)
+                ->getRelation($email, 'users')
+                ->relateById($userId);
+        }
+
+        $this->entityManager->removeEntity($attachment);
+
+        return $email;
+    }
+
+    /**
+     * @throws NotFound
+     */
+    private function getAttachment(string $fileId): Attachment
+    {
+        $attachment = $this->entityManager->getRDBRepositoryByClass(Attachment::class)->getById($fileId);
+
+        if (!$attachment) {
+            throw new NotFound("Attachment not found.");
+        }
+
+        return $attachment;
+    }
+
+    /**
+     * @throws Conflict
+     */
+    private function checkDuplicate(MessageWrapper $message): void
+    {
+        $messageId = $this->parser->getMessageId($message);
+
+        if (!$messageId) {
+            return;
+        }
+
+        $email = $this->entityManager->getRDBRepositoryByClass(Email::class)->getNew();
+        $email->setMessageId($messageId);
+
+        $duplicate = $this->duplicateFinder->find($email, $message);
+
+        if (!$duplicate) {
+            return;
+        }
+
+        throw Conflict::createWithBody(
+            'Email is already imported.',
+            Error\Body::create()->withMessageTranslation('alreadyImported', Email::ENTITY_TYPE, [
+                'id' => $duplicate->getId(),
+                'link' => '#Email/view/' . $duplicate->getId(),
+            ])
+        );
+    }
+}