Invalidate the cache when a share is updated

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

apps/files/lib/AppInfo/Application.php

@@ -27,6 +27,7 @@
 namespace OCA\Files\AppInfo;
 
 use OCA\Files\Activity\Helper;
+use OCA\Files\Collaboration\Resources\Listener;
 use OCA\Files\Collaboration\Resources\ResourceProvider;
 use OCA\Files\Controller\ApiController;
 use OCP\AppFramework\App;
@@ -108,5 +109,6 @@ class Application extends App {
 		/** @var IManager $resourceManager */
 		$resourceManager = $container->query(IManager::class);
 		$resourceManager->registerResourceProvider($container->query(ResourceProvider::class));
+		Listener::register($server->getEventDispatcher());
 	}
 }

apps/files/lib/Collaboration/Resources/Listener.php

@@ -0,0 +1,44 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019 Joas Schilling <coding@schilljs.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\Files\Collaboration\Resources;
+
+
+use OCP\Collaboration\Resources\IManager;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+class Listener {
+	public static function register(EventDispatcherInterface $dispatcher): void {
+		$dispatcher->addListener('OCP\Share::postShare', [self::class, 'shareModification']);
+		$dispatcher->addListener('OCP\Share::postUnshare', [self::class, 'shareModification']);
+		$dispatcher->addListener('OCP\Share::postUnshareFromSelf', [self::class, 'shareModification']);
+	}
+
+	public static function shareModification(): void {
+		/** @var IManager $resourceManager */
+		$resourceManager = \OC::$server->query(IManager::class);
+		/** @var ResourceProvider $resourceProvider */
+		$resourceProvider = \OC::$server->query(ResourceProvider::class);
+
+		$resourceManager->invalidateAccessCacheForProvider($resourceProvider);
+	}
+}