Free FilesController

Signed-off-by: Joas Schilling <coding@schilljs.com>

1 files changed, 147 insertions, 0 deletions

diff --git a/lib/Controller/FilesIntegrationController.php b/lib/Controller/FilesIntegrationController.php
new file mode 100644
index 000000000..4ab4e44fb
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+++ b/lib/Controller/FilesIntegrationController.php
@@ -0,0 +1,147 @@
+<?php
+declare(strict_types=1);
+/**
+ *
+ * @copyright Copyright (c) 2018, Daniel Calviño Sánchez (danxuliu@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\Talk\Controller;
+
+use OCA\Talk\Exceptions\RoomNotFoundException;
+use OCA\Talk\Files\Util;
+use OCA\Talk\Manager;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\AppFramework\OCS\OCSNotFoundException;
+use OCP\AppFramework\OCSController;
+use OCP\Files\FileInfo;
+use OCP\Files\NotFoundException;
+use OCP\IL10N;
+use OCP\IRequest;
+use OCP\Share\IShare;
+
+class FilesIntegrationController extends OCSController {
+
+	/** @var string */
+	private $currentUser;
+	/** @var Manager */
+	private $manager;
+	/** @var Util */
+	private $util;
+	/** @var IL10N */
+	private $l;
+
+	public function __construct(
+			string $appName,
+			IRequest $request,
+			string $userId,
+			Manager $manager,
+			Util $util,
+			IL10N $l10n
+	) {
+		parent::__construct($appName, $request);
+		$this->currentUser = $userId;
+		$this->manager = $manager;
+		$this->util = $util;
+		$this->l = $l10n;
+	}
+
+	/**
+	 * @NoAdminRequired
+	 *
+	 * Returns the token of the room associated to the given file id.
+	 *
+	 * If there is no room associated to the given file id a new room is
+	 * created; the new room is a public room associated with a "file" object
+	 * with the given file id. Unlike normal rooms in which the owner is the
+	 * user that created the room these are special rooms without owner
+	 * (although self joined users become persistent participants automatically
+	 * when they join until they explicitly leave or no longer have access to
+	 * the file).
+	 *
+	 * In any case, to create or even get the token of the room, the file must
+	 * be shared and the user must have direct access to that file; an error
+	 * is returned otherwise. A user has direct access to a file if she has
+	 * access to it (or to an ancestor) through a user, group, circle or room
+	 * share (but not through a link share, for example), or if she is the owner
+	 * of such a file.
+	 *
+	 * @param string $fileId
+	 * @return DataResponse the status code is "200 OK" if a room is returned,
+	 *         or "404 Not found" if the given file id was invalid.
+	 * @throws OCSNotFoundException
+	 */
+	public function getRoom(string $fileId): DataResponse {
+		$share = $this->util->getAnyDirectShareOfFileAccessibleByUser($fileId, $this->currentUser);
+		$groupFolder = null;
+		if (!$share) {
+			$groupFolder = $this->util->getGroupFolderNode($fileId, $this->currentUser);
+			if (!$groupFolder) {
+				throw new OCSNotFoundException($this->l->t('File is not shared, or shared but not with the user'));
+			}
+		}
+
+		try {
+			$room = $this->manager->getRoomByObject('file', $fileId);
+		} catch (RoomNotFoundException $e) {
+			if ($share) {
+				try {
+					$name = $this->getFileName($share, $fileId);
+				} catch (NotFoundException $e) {
+					throw new OCSNotFoundException($this->l->t('File is not shared, or shared but not with the user'));
+				}
+			} else {
+				$name = $groupFolder->getName();
+			}
+			$room = $this->manager->createPublicRoom($name, 'file', $fileId);
+		}
+
+		return new DataResponse([
+			'token' => $room->getToken()
+		]);
+	}
+
+	/**
+	 * Returns the name of the file in the share.
+	 *
+	 * If the given share itself is a file its name is returned; otherwise the
+	 * file is looked for in the given shared folder and its name is returned.
+	 *
+	 * @param IShare $share
+	 * @param string $fileId
+	 * @return string
+	 * @throws NotFoundException
+	 */
+	private function getFileName(IShare $share, string $fileId): string {
+		$node = $share->getNode();
+
+		if ($node->getType() === FileInfo::TYPE_FILE) {
+			return $node->getName();
+		}
+
+		$fileById = $node->getById($fileId);
+
+		if (empty($fileById)) {
+			throw new NotFoundException('File not found in share');
+		}
+
+		$file = array_shift($fileById);
+		return $file->getName();
+	}
+
+}