1 files changed, 71 insertions, 0 deletions
diff --git a/lib/private/Preview/Storage/Root.php b/lib/private/Preview/Storage/Root.php
new file mode 100644
index 00000000000..0e9d92a44c2
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+++ b/lib/private/Preview/Storage/Root.php
@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2020, Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @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 OC\Preview\Storage;
+
+use OC\Files\AppData\AppData;
+use OC\SystemConfig;
+use OCP\Files\IRootFolder;
+use OCP\Files\NotFoundException;
+use OCP\Files\SimpleFS\ISimpleFolder;
+
+class Root extends AppData {
+	public function __construct(IRootFolder $rootFolder, SystemConfig $systemConfig) {
+		parent::__construct($rootFolder, $systemConfig, 'preview');
+	}
+
+
+	public function getFolder(string $name): ISimpleFolder {
+		$internalFolder = $this->getInternalFolder($name);
+
+		try {
+			return parent::getFolder($internalFolder);
+		} catch (NotFoundException $e) {
+			/*
+			 * The new folder structure is not found.
+			 * Lets try the old one
+			 */
+		}
+
+		return parent::getFolder($name);
+	}
+
+	public function newFolder(string $name): ISimpleFolder {
+		$internalFolder = $this->getInternalFolder($name);
+		return parent::newFolder($internalFolder);
+	}
+
+	/*
+	 * Do not allow directory listing on this special root
+	 * since it gets to big and time consuming
+	 */
+	public function getDirectoryListing(): array {
+		return [];
+	}
+
+	private function getInternalFolder(string $name): string {
+		return implode('/', str_split(substr(md5($name), 0, 7))) . '/' . $name;
+	}
+}