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- <?php
- /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * 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, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
-
- namespace OCA\DAV\Connector\Sabre;
-
- use OCP\Comments\ICommentsManager;
- use OCP\IUserSession;
- use Sabre\DAV\PropFind;
- use Sabre\DAV\ServerPlugin;
-
- class CommentPropertiesPlugin extends ServerPlugin {
-
- const PROPERTY_NAME_HREF = '{http://owncloud.org/ns}comments-href';
- const PROPERTY_NAME_COUNT = '{http://owncloud.org/ns}comments-count';
- const PROPERTY_NAME_UNREAD = '{http://owncloud.org/ns}comments-unread';
-
- /** @var \Sabre\DAV\Server */
- protected $server;
-
- /** @var ICommentsManager */
- private $commentsManager;
-
- /** @var IUserSession */
- private $userSession;
-
- private $cachedUnreadCount = [];
-
- private $cachedFolders = [];
-
- public function __construct(ICommentsManager $commentsManager, IUserSession $userSession) {
- $this->commentsManager = $commentsManager;
- $this->userSession = $userSession;
- }
-
- /**
- * This initializes the plugin.
- *
- * This function is called by Sabre\DAV\Server, after
- * addPlugin is called.
- *
- * This method should set up the required event subscriptions.
- *
- * @param \Sabre\DAV\Server $server
- * @return void
- */
- function initialize(\Sabre\DAV\Server $server) {
- $this->server = $server;
- $this->server->on('propFind', [$this, 'handleGetProperties']);
- }
-
- /**
- * Adds tags and favorites properties to the response,
- * if requested.
- *
- * @param PropFind $propFind
- * @param \Sabre\DAV\INode $node
- * @return void
- */
- public function handleGetProperties(
- PropFind $propFind,
- \Sabre\DAV\INode $node
- ) {
- if (!($node instanceof File) && !($node instanceof Directory)) {
- return;
- }
-
- // need prefetch ?
- if ($node instanceof \OCA\DAV\Connector\Sabre\Directory
- && $propFind->getDepth() !== 0
- && !is_null($propFind->getStatus(self::PROPERTY_NAME_UNREAD))
- ) {
- $unreadCounts = $this->commentsManager->getNumberOfUnreadCommentsForFolder($node->getId(), $this->userSession->getUser());
- $this->cachedFolders[] = $node->getPath();
- foreach ($unreadCounts as $id => $count) {
- $this->cachedUnreadCount[$id] = $count;
- }
- }
-
- $propFind->handle(self::PROPERTY_NAME_COUNT, function() use ($node) {
- return $this->commentsManager->getNumberOfCommentsForObject('files', (string)$node->getId());
- });
-
- $propFind->handle(self::PROPERTY_NAME_HREF, function() use ($node) {
- return $this->getCommentsLink($node);
- });
-
- $propFind->handle(self::PROPERTY_NAME_UNREAD, function() use ($node) {
- if (isset($this->cachedUnreadCount[$node->getId()])) {
- return $this->cachedUnreadCount[$node->getId()];
- } else {
- list($parentPath,) = \Sabre\Uri\split($node->getPath());
- if ($parentPath === '') {
- $parentPath = '/';
- }
- // if we already cached the folder this file is in we know there are no comments for this file
- if (array_search($parentPath, $this->cachedFolders) === false) {
- return 0;
- } else {
- return $this->getUnreadCount($node);
- }
- }
- });
- }
-
- /**
- * returns a reference to the comments node
- *
- * @param Node $node
- * @return mixed|string
- */
- public function getCommentsLink(Node $node) {
- $href = $this->server->getBaseUri();
- $entryPoint = strpos($href, '/remote.php/');
- if($entryPoint === false) {
- // in case we end up somewhere else, unexpectedly.
- return null;
- }
- $commentsPart = 'dav/comments/files/' . rawurldecode($node->getId());
- $href = substr_replace($href, $commentsPart, $entryPoint + strlen('/remote.php/'));
- return $href;
- }
-
- /**
- * returns the number of unread comments for the currently logged in user
- * on the given file or directory node
- *
- * @param Node $node
- * @return Int|null
- */
- public function getUnreadCount(Node $node) {
- $user = $this->userSession->getUser();
- if(is_null($user)) {
- return null;
- }
-
- $lastRead = $this->commentsManager->getReadMark('files', (string)$node->getId(), $user);
-
- return $this->commentsManager->getNumberOfCommentsForObject('files', (string)$node->getId(), $lastRead);
- }
-
- }
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