Add notification for shares about to expire

Introduces a new command that will create notifications for users if
they have shares that will expire the next day.

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

apps/files_sharing/appinfo/info.xml

@@ -41,6 +41,7 @@ Turning the feature off removes shared files and folders on the server for all s
 
 	<commands>
 		<command>OCA\Files_Sharing\Command\CleanupRemoteStorages</command>
+		<command>OCA\Files_Sharing\Command\ExiprationNotification</command>
 	</commands>
 
 	<activity>

apps/files_sharing/composer/composer/autoload_classmap.php

@@ -22,6 +22,7 @@ return array(
     'OCA\\Files_Sharing\\Capabilities' => $baseDir . '/../lib/Capabilities.php',
     'OCA\\Files_Sharing\\Collaboration\\ShareRecipientSorter' => $baseDir . '/../lib/Collaboration/ShareRecipientSorter.php',
     'OCA\\Files_Sharing\\Command\\CleanupRemoteStorages' => $baseDir . '/../lib/Command/CleanupRemoteStorages.php',
+    'OCA\\Files_Sharing\\Command\\ExiprationNotification' => $baseDir . '/../lib/Command/ExiprationNotification.php',
     'OCA\\Files_Sharing\\Controller\\DeletedShareAPIController' => $baseDir . '/../lib/Controller/DeletedShareAPIController.php',
     'OCA\\Files_Sharing\\Controller\\ExternalSharesController' => $baseDir . '/../lib/Controller/ExternalSharesController.php',
     'OCA\\Files_Sharing\\Controller\\PublicPreviewController' => $baseDir . '/../lib/Controller/PublicPreviewController.php',
@@ -50,6 +51,7 @@ return array(
     'OCA\\Files_Sharing\\Migration\\OwncloudGuestShareType' => $baseDir . '/../lib/Migration/OwncloudGuestShareType.php',
     'OCA\\Files_Sharing\\Migration\\SetPasswordColumn' => $baseDir . '/../lib/Migration/SetPasswordColumn.php',
     'OCA\\Files_Sharing\\MountProvider' => $baseDir . '/../lib/MountProvider.php',
+    'OCA\\Files_Sharing\\Notification\\Notifier' => $baseDir . '/../lib/Notification/Notifier.php',
     'OCA\\Files_Sharing\\Scanner' => $baseDir . '/../lib/Scanner.php',
     'OCA\\Files_Sharing\\ShareBackend\\File' => $baseDir . '/../lib/ShareBackend/File.php',
     'OCA\\Files_Sharing\\ShareBackend\\Folder' => $baseDir . '/../lib/ShareBackend/Folder.php',

apps/files_sharing/composer/composer/autoload_static.php

@@ -37,6 +37,7 @@ class ComposerStaticInitFiles_Sharing
         'OCA\\Files_Sharing\\Capabilities' => __DIR__ . '/..' . '/../lib/Capabilities.php',
         'OCA\\Files_Sharing\\Collaboration\\ShareRecipientSorter' => __DIR__ . '/..' . '/../lib/Collaboration/ShareRecipientSorter.php',
         'OCA\\Files_Sharing\\Command\\CleanupRemoteStorages' => __DIR__ . '/..' . '/../lib/Command/CleanupRemoteStorages.php',
+        'OCA\\Files_Sharing\\Command\\ExiprationNotification' => __DIR__ . '/..' . '/../lib/Command/ExiprationNotification.php',
         'OCA\\Files_Sharing\\Controller\\DeletedShareAPIController' => __DIR__ . '/..' . '/../lib/Controller/DeletedShareAPIController.php',
         'OCA\\Files_Sharing\\Controller\\ExternalSharesController' => __DIR__ . '/..' . '/../lib/Controller/ExternalSharesController.php',
         'OCA\\Files_Sharing\\Controller\\PublicPreviewController' => __DIR__ . '/..' . '/../lib/Controller/PublicPreviewController.php',
@@ -65,6 +66,7 @@ class ComposerStaticInitFiles_Sharing
         'OCA\\Files_Sharing\\Migration\\OwncloudGuestShareType' => __DIR__ . '/..' . '/../lib/Migration/OwncloudGuestShareType.php',
         'OCA\\Files_Sharing\\Migration\\SetPasswordColumn' => __DIR__ . '/..' . '/../lib/Migration/SetPasswordColumn.php',
         'OCA\\Files_Sharing\\MountProvider' => __DIR__ . '/..' . '/../lib/MountProvider.php',
+        'OCA\\Files_Sharing\\Notification\\Notifier' => __DIR__ . '/..' . '/../lib/Notification/Notifier.php',
         'OCA\\Files_Sharing\\Scanner' => __DIR__ . '/..' . '/../lib/Scanner.php',
         'OCA\\Files_Sharing\\ShareBackend\\File' => __DIR__ . '/..' . '/../lib/ShareBackend/File.php',
         'OCA\\Files_Sharing\\ShareBackend\\Folder' => __DIR__ . '/..' . '/../lib/ShareBackend/Folder.php',

apps/files_sharing/lib/AppInfo/Application.php

@@ -32,6 +32,7 @@ namespace OCA\Files_Sharing\AppInfo;
 use OCA\Files_Sharing\Middleware\OCSShareAPIMiddleware;
 use OCA\Files_Sharing\Middleware\ShareInfoMiddleware;
 use OCA\Files_Sharing\MountProvider;
+use OCA\Files_Sharing\Notification\Notifier;
 use OCP\AppFramework\App;
 use OC\AppFramework\Utility\SimpleContainer;
 use OCA\Files_Sharing\Controller\ExternalSharesController;
@@ -164,6 +165,10 @@ class Application extends App {
 		 * Register capabilities
 		 */
 		$container->registerCapability(Capabilities::class);
+
+		/** @var \OCP\Notification\IManager $notifications */
+		$notifications = $container->query(\OCP\Notification\IManager::class);
+		$notifications->registerNotifierService(Notifier::class);
 	}
 
 	public function registerMountProviders() {

apps/files_sharing/lib/Command/ExiprationNotification.php

@@ -0,0 +1,98 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019, 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_Sharing\Command;
+
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\IDBConnection;
+use OCP\Notification\IManager as NotificationManager;
+use OCP\Share\IManager as ShareManager;
+use OCP\Share\IShare;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class ExiprationNotification extends Command {
+	/** @var NotificationManager */
+	private $notificationManager;
+	/** @var IDBConnection */
+	private $connection;
+	/** @var ITimeFactory */
+	private $time;
+	/** @var ShareManager */
+	private $shareManager;
+
+	public function __construct(ITimeFactory $time,
+								NotificationManager $notificationManager,
+								IDBConnection $connection,
+								ShareManager $shareManager) {
+		parent::__construct();
+
+		$this->notificationManager = $notificationManager;
+		$this->connection = $connection;
+		$this->time = $time;
+		$this->shareManager = $shareManager;
+	}
+
+	protected function configure() {
+		$this
+			->setName('sharing:expiration-notification')
+			->setDescription('Notify share initiators when a share will expire the next day.');
+	}
+
+	public function execute(InputInterface $input, OutputInterface $output) {
+		//Current time
+		$minTime = $this->time->getDateTime();
+		$minTime->add(new \DateInterval('P1D'));
+		$minTime->setTime(0,0,0);
+
+		$maxTime = clone $minTime;
+		$maxTime->setTime(23, 59, 59);
+
+		$shares = $this->shareManager->getAllShares();
+
+		$now = $this->time->getDateTime();
+
+		/** @var IShare $share */
+		foreach ($shares as $share) {
+			if ($share->getExpirationDate() === null
+				|| $share->getExpirationDate()->getTimestamp() < $minTime->getTimestamp()
+				|| $share->getExpirationDate()->getTimestamp() > $maxTime->getTimestamp()) {
+				continue;
+			}
+
+			$notification = $this->notificationManager->createNotification();
+			$notification->setApp('files_sharing')
+				->setDateTime($now)
+				->setObject('share', $share->getFullId())
+				->setSubject('expiresTomorrow');
+
+			// Only send to initiator for now
+			$notification->setUser($share->getSharedBy());
+			$this->notificationManager->notify($notification);
+		}
+	}
+
+
+}

apps/files_sharing/lib/Notification/Notifier.php

@@ -0,0 +1,98 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019, 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_Sharing\Notification;
+
+use OCP\Files\IRootFolder;
+use OCP\L10N\IFactory;
+use OCP\Notification\AlreadyProcessedException;
+use OCP\Notification\INotification;
+use OCP\Notification\INotifier;
+use OCP\Share\Exceptions\ShareNotFound;
+use OCP\Share\IManager;
+
+class Notifier implements INotifier {
+
+	/** @var IFactory */
+	protected $l10nFactory;
+
+	/** @var IManager */
+	private $shareManager;
+
+	/** @var IRootFolder */
+	private $rootFolder;
+
+	public function __construct(IFactory $l10nFactory,
+								IManager $shareManager,
+								IRootFolder $rootFolder) {
+		$this->l10nFactory = $l10nFactory;
+		$this->shareManager = $shareManager;
+		$this->rootFolder = $rootFolder;
+	}
+
+	public function getID(): string {
+		return 'files_sharing';
+	}
+
+	public function getName(): string {
+		return $this->l10nFactory->get('files_sharing')->t('Files sharing');
+	}
+
+	public function prepare(INotification $notification, string $languageCode): INotification {
+		if ($notification->getApp() !== 'files_sharing' ||
+			$notification->getSubject() !== 'expiresTomorrow') {
+			throw new \InvalidArgumentException('Unhandled app or subject');
+		}
+
+		$l = $this->l10nFactory->get('files_sharing', $languageCode);
+		$attemptId = $notification->getObjectId();
+
+		try {
+			$share = $this->shareManager->getShareById($attemptId);
+		} catch (ShareNotFound $e) {
+			throw new AlreadyProcessedException();
+		}
+
+		$node = $share->getNode();
+		$userFolder = $this->rootFolder->getUserFolder($notification->getUser());
+		$path = $userFolder->getRelativePath($node->getPath());
+
+		$notification
+			->setParsedSubject($l->t('Share will expire tomorrow'))
+			->setParsedMessage($l->t('One or more of your shares will expire tomorrow'))
+			->setRichMessage(
+				$l->t('Your share of {node} will expire tomorrow'),
+				[
+					'node' => [
+						'type' => 'file',
+						'id' => $node->getId(),
+						'name' => $node->getName(),
+						'path' => $path,
+					],
+				]
+			);
+
+		return $notification;
+	}
+}