1 files changed, 100 insertions, 0 deletions
diff --git a/apps/files_versions/lib/Sabre/VersionRoot.php b/apps/files_versions/lib/Sabre/VersionRoot.php
new file mode 100644
index 00000000000..743b1c6ef1b
--- /dev/null
+++ b/apps/files_versions/lib/Sabre/VersionRoot.php
@@ -0,0 +1,100 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright 2018, 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 OCA\Files_Versions\Sabre;
+
+use OCP\Files\File;
+use OCP\Files\IRootFolder;
+use Sabre\DAV\Exception\Forbidden;
+use Sabre\DAV\Exception\NotFound;
+use Sabre\DAV\ICollection;
+
+class VersionRoot implements ICollection {
+
+	/** @var string */
+	private $userId;
+
+	/** @var IRootFolder */
+	private $rootFolder;
+
+	public function __construct(string $userId, IRootFolder $rootFolder) {
+		$this->userId = $userId;
+		$this->rootFolder = $rootFolder;
+	}
+
+	public function delete() {
+		throw new Forbidden();
+	}
+
+	public function getName(): string {
+		return 'versions';
+	}
+
+	public function setName($name) {
+		throw new Forbidden();
+	}
+
+	public function createFile($name, $data = null) {
+		throw new Forbidden();
+	}
+
+	public function createDirectory($name) {
+		throw new Forbidden();
+	}
+
+	public function getChild($name) {
+		$userFolder = $this->rootFolder->getUserFolder($this->userId);
+
+		$fileId = (int)$name;
+		$nodes = $userFolder->getById($fileId);
+
+		if ($nodes === []) {
+			throw new NotFound();
+		}
+
+		$node = array_pop($nodes);
+
+		if (!$node instanceof File) {
+			throw new NotFound();
+		}
+
+		return new VersionCollection($userFolder, $node, $this->userId);
+	}
+
+	public function getChildren(): array {
+		return [];
+	}
+
+	public function childExists($name): bool {
+		try {
+			$this->getChild($name);
+			return true;
+		} catch (NotFound $e) {
+			return false;
+		}
+	}
+
+	public function getLastModified(): int {
+		return 0;
+	}
+}