Attachments... .

lib/Service/FileService.php

@@ -0,0 +1,67 @@
+<?php declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2020 Matias De lellis <mati86dl@gmail.com>
+ *
+ * @author Matias De lellis <mati86dl@gmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\QuickNotes\Service;
+
+use OCP\IURLGenerator;
+
+use OCP\Files\IRootFolder;
+use OCP\Files\File;
+use OCP\Files\Folder;
+use OCP\Files\Node;
+
+use OCP\Files\NotFoundException;
+
+class FileService {
+
+	/**  @var string|null */
+	private $userId;
+
+	/** @var IRootFolder */
+	private $rootFolder;
+
+	/** @var IURLGenerator */
+	protected $urlGenerator;
+
+	public function __construct($userId,
+	                            IRootFolder   $rootFolder,
+	                            IURLGenerator $urlGenerator)
+	{
+		$this->userId       = $userId;
+		$this->rootFolder   = $rootFolder;
+		$this->urlGenerator = $urlGenerator;
+	}
+
+	public function getPreviewUrl($fileId, $sideSize): string {
+		$userFolder = $this->rootFolder->getUserFolder($this->userId);
+		$node = current($userFolder->getById($fileId));
+		$path = $userFolder->getRelativePath($node->getPath());
+
+		return $this->urlGenerator->linkToRouteAbsolute('core.Preview.getPreview', [
+			'file' => $path,
+			'x' => $sideSize,
+			'y' => $sideSize
+		]);
+	}
+
+}