User status automation background job

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

apps/dav/lib/AppInfo/Application.php

@@ -85,6 +85,7 @@ use OCA\DAV\Listener\CardListener;
 use OCA\DAV\Listener\ClearPhotoCacheListener;
 use OCA\DAV\Listener\SubscriptionListener;
 use OCA\DAV\Listener\TrustedServerRemovedListener;
+use OCA\DAV\Listener\UserPreferenceListener;
 use OCA\DAV\Search\ContactsSearchProvider;
 use OCA\DAV\Search\EventsSearchProvider;
 use OCA\DAV\Search\TasksSearchProvider;
@@ -96,6 +97,8 @@ use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
 use OCP\AppFramework\IAppContainer;
 use OCP\Calendar\IManager as ICalendarManager;
+use OCP\Config\BeforePreferenceDeletedEvent;
+use OCP\Config\BeforePreferenceSetEvent;
 use OCP\Contacts\IManager as IContactsManager;
 use OCP\IServerContainer;
 use OCP\IUser;
@@ -186,6 +189,9 @@ class Application extends App implements IBootstrap {
 		$context->registerEventListener(CardUpdatedEvent::class, ClearPhotoCacheListener::class);
 		$context->registerEventListener(TrustedServerRemovedEvent::class, TrustedServerRemovedListener::class);
 
+		$context->registerEventListener(BeforePreferenceDeletedEvent::class, UserPreferenceListener::class);
+		$context->registerEventListener(BeforePreferenceSetEvent::class, UserPreferenceListener::class);
+
 		$context->registerNotifierService(Notifier::class);
 
 		$context->registerCalendarProvider(CalendarProvider::class);

apps/dav/lib/BackgroundJob/UserStatusAutomation.php

@@ -0,0 +1,96 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2022 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\DAV\BackgroundJob;
+
+use OCA\DAV\CalDAV\Schedule\Plugin;
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\BackgroundJob\IJobList;
+use OCP\BackgroundJob\TimedJob;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use Psr\Log\LoggerInterface;
+use Sabre\VObject\Reader;
+
+class UserStatusAutomation extends TimedJob {
+	protected IDBConnection $connection;
+	protected IJobList $jobList;
+	protected LoggerInterface $logger;
+	protected IConfig $config;
+
+	public function __construct(ITimeFactory $timeFactory,
+								IDBConnection $connection,
+								IJobList $jobList,
+								LoggerInterface $logger,
+								IConfig $config) {
+		parent::__construct($timeFactory);
+		$this->connection = $connection;
+		$this->jobList = $jobList;
+		$this->logger = $logger;
+		$this->config = $config;
+
+		$this->setInterval(1); // FIXME $this->setInterval(240);
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	protected function run($argument) {
+		if (!isset($argument['userId'])) {
+			$this->jobList->remove(self::class, $argument);
+			$this->logger->info('Removing invalid ' . self::class . ' background job');
+			return;
+		}
+
+		$userId = $argument['userId'];
+		$automationEnabled = $this->config->getUserValue($userId, 'dav', 'user_status_automation', 'no') === 'yes';
+		if (!$automationEnabled) {
+			$this->logger->info('Removing ' . self::class . ' background job for user "' . $userId . '" because the setting is disabled');
+			$this->jobList->remove(self::class, $argument);
+			return;
+		}
+
+		$propertyPath = 'calendars/' . $userId . '/inbox';
+		$propertyName = '{' . Plugin::NS_CALDAV . '}calendar-availability';
+
+		$query = $this->connection->getQueryBuilder();
+		$query->select('propertyvalue')
+			->from('properties')
+			->where($query->expr()->eq('userid', $query->createNamedParameter($userId)))
+			->andWhere($query->expr()->eq('propertypath', $query->createNamedParameter($propertyPath)))
+			->where($query->expr()->eq('propertyname', $query->createNamedParameter($propertyName)))
+			->setMaxResults(1);
+
+		$result = $query->executeQuery();
+		$property = $result->fetchOne();
+		$result->closeCursor();
+
+		if (!$property) {
+			$this->logger->info('Removing ' . self::class . ' background job for user "' . $userId . '" because the user has no availability settings');
+			$this->jobList->remove(self::class, $argument);
+			return;
+		}
+
+		$this->logger->debug('User status automation ran');
+	}
+}

apps/dav/lib/Listener/UserPreferenceListener.php

@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2022 Joas Schilling <coding@schilljs.com>
+ *
+ * @author 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\DAV\Listener;
+
+use OCA\DAV\BackgroundJob\UserStatusAutomation;
+use OCP\BackgroundJob\IJobList;
+use OCP\Config\BeforePreferenceDeletedEvent;
+use OCP\Config\BeforePreferenceSetEvent;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+
+class UserPreferenceListener implements IEventListener {
+
+	protected IJobList $jobList;
+
+	public function __construct(IJobList $jobList) {
+		$this->jobList = $jobList;
+	}
+
+	public function handle(Event $event): void {
+		if ($event instanceof BeforePreferenceSetEvent) {
+			if ($event->getAppId() === 'dav' && $event->getConfigKey() === 'user_status_automation' && $event->getConfigValue() === 'yes') {
+				$event->setValid(true);
+
+				// Not the cleanest way, but we just add the job in the before event.
+				// If something ever turns wrong the first execution will remove the job again.
+				// We also first delete the current job, so the next run time is reset.
+				$this->jobList->remove(UserStatusAutomation::class, ['userId' => $event->getUserId()]);
+				$this->jobList->add(UserStatusAutomation::class, ['userId' => $event->getUserId()]);
+			}
+		} elseif ($event instanceof BeforePreferenceDeletedEvent) {
+			if ($event->getAppId() === 'dav' && $event->getConfigKey() === 'user_status_automation') {
+				$event->setValid(true);
+			}
+		}
+	}
+}