Merge pull request #40615 from nextcloud/enh/automate-calendar-event-user-status

feat(user status): automate user status for events

8 files changed, 1880 insertions, 0 deletions

diff --git a/apps/dav/composer/composer/autoload_classmap.php b/apps/dav/composer/composer/autoload_classmap.php
index bb424e47787..0bec456d1f1 100644
--- a/apps/dav/composer/composer/autoload_classmap.php
+++ b/apps/dav/composer/composer/autoload_classmap.php
@@ -55,6 +55,7 @@ return array(
     'OCA\\DAV\\CalDAV\\CalendarProvider' => $baseDir . '/../lib/CalDAV/CalendarProvider.php',
     'OCA\\DAV\\CalDAV\\CalendarRoot' => $baseDir . '/../lib/CalDAV/CalendarRoot.php',
     'OCA\\DAV\\CalDAV\\EventComparisonService' => $baseDir . '/../lib/CalDAV/EventComparisonService.php',
+    'OCA\\DAV\\CalDAV\\FreeBusy\\FreeBusyGenerator' => $baseDir . '/../lib/CalDAV/FreeBusy/FreeBusyGenerator.php',
     'OCA\\DAV\\CalDAV\\ICSExportPlugin\\ICSExportPlugin' => $baseDir . '/../lib/CalDAV/ICSExportPlugin/ICSExportPlugin.php',
     'OCA\\DAV\\CalDAV\\IRestorable' => $baseDir . '/../lib/CalDAV/IRestorable.php',
     'OCA\\DAV\\CalDAV\\Integration\\ExternalCalendar' => $baseDir . '/../lib/CalDAV/Integration/ExternalCalendar.php',
@@ -97,6 +98,8 @@ return array(
     'OCA\\DAV\\CalDAV\\Search\\Xml\\Filter\\PropFilter' => $baseDir . '/../lib/CalDAV/Search/Xml/Filter/PropFilter.php',
     'OCA\\DAV\\CalDAV\\Search\\Xml\\Filter\\SearchTermFilter' => $baseDir . '/../lib/CalDAV/Search/Xml/Filter/SearchTermFilter.php',
     'OCA\\DAV\\CalDAV\\Search\\Xml\\Request\\CalendarSearchReport' => $baseDir . '/../lib/CalDAV/Search/Xml/Request/CalendarSearchReport.php',
+    'OCA\\DAV\\CalDAV\\Status\\Status' => $baseDir . '/../lib/CalDAV/Status/Status.php',
+    'OCA\\DAV\\CalDAV\\Status\\StatusService' => $baseDir . '/../lib/CalDAV/Status/StatusService.php',
     'OCA\\DAV\\CalDAV\\Trashbin\\DeletedCalendarObject' => $baseDir . '/../lib/CalDAV/Trashbin/DeletedCalendarObject.php',
     'OCA\\DAV\\CalDAV\\Trashbin\\DeletedCalendarObjectsCollection' => $baseDir . '/../lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php',
     'OCA\\DAV\\CalDAV\\Trashbin\\Plugin' => $baseDir . '/../lib/CalDAV/Trashbin/Plugin.php',
diff --git a/apps/dav/composer/composer/autoload_static.php b/apps/dav/composer/composer/autoload_static.php
index ef040e79674..3c1891cf192 100644
--- a/apps/dav/composer/composer/autoload_static.php
+++ b/apps/dav/composer/composer/autoload_static.php
@@ -70,6 +70,7 @@ class ComposerStaticInitDAV
         'OCA\\DAV\\CalDAV\\CalendarProvider' => __DIR__ . '/..' . '/../lib/CalDAV/CalendarProvider.php',
         'OCA\\DAV\\CalDAV\\CalendarRoot' => __DIR__ . '/..' . '/../lib/CalDAV/CalendarRoot.php',
         'OCA\\DAV\\CalDAV\\EventComparisonService' => __DIR__ . '/..' . '/../lib/CalDAV/EventComparisonService.php',
+        'OCA\\DAV\\CalDAV\\FreeBusy\\FreeBusyGenerator' => __DIR__ . '/..' . '/../lib/CalDAV/FreeBusy/FreeBusyGenerator.php',
         'OCA\\DAV\\CalDAV\\ICSExportPlugin\\ICSExportPlugin' => __DIR__ . '/..' . '/../lib/CalDAV/ICSExportPlugin/ICSExportPlugin.php',
         'OCA\\DAV\\CalDAV\\IRestorable' => __DIR__ . '/..' . '/../lib/CalDAV/IRestorable.php',
         'OCA\\DAV\\CalDAV\\Integration\\ExternalCalendar' => __DIR__ . '/..' . '/../lib/CalDAV/Integration/ExternalCalendar.php',
@@ -112,6 +113,8 @@ class ComposerStaticInitDAV
         'OCA\\DAV\\CalDAV\\Search\\Xml\\Filter\\PropFilter' => __DIR__ . '/..' . '/../lib/CalDAV/Search/Xml/Filter/PropFilter.php',
         'OCA\\DAV\\CalDAV\\Search\\Xml\\Filter\\SearchTermFilter' => __DIR__ . '/..' . '/../lib/CalDAV/Search/Xml/Filter/SearchTermFilter.php',
         'OCA\\DAV\\CalDAV\\Search\\Xml\\Request\\CalendarSearchReport' => __DIR__ . '/..' . '/../lib/CalDAV/Search/Xml/Request/CalendarSearchReport.php',
+        'OCA\\DAV\\CalDAV\\Status\\Status' => __DIR__ . '/..' . '/../lib/CalDAV/Status/Status.php',
+        'OCA\\DAV\\CalDAV\\Status\\StatusService' => __DIR__ . '/..' . '/../lib/CalDAV/Status/StatusService.php',
         'OCA\\DAV\\CalDAV\\Trashbin\\DeletedCalendarObject' => __DIR__ . '/..' . '/../lib/CalDAV/Trashbin/DeletedCalendarObject.php',
         'OCA\\DAV\\CalDAV\\Trashbin\\DeletedCalendarObjectsCollection' => __DIR__ . '/..' . '/../lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php',
         'OCA\\DAV\\CalDAV\\Trashbin\\Plugin' => __DIR__ . '/..' . '/../lib/CalDAV/Trashbin/Plugin.php',
diff --git a/apps/dav/lib/CalDAV/CalendarImpl.php b/apps/dav/lib/CalDAV/CalendarImpl.php
index cc57aa36469..de20c9ac3ae 100644
--- a/apps/dav/lib/CalDAV/CalendarImpl.php
+++ b/apps/dav/lib/CalDAV/CalendarImpl.php
@@ -33,11 +33,15 @@ use OCA\DAV\CalDAV\InvitationResponse\InvitationResponseServer;
 use OCP\Calendar\Exceptions\CalendarException;
 use OCP\Calendar\ICreateFromString;
 use OCP\Calendar\IHandleImipMessage;
+use OCP\Calendar\ISchedulingInformation;
 use OCP\Constants;
+use Sabre\CalDAV\Xml\Property\ScheduleCalendarTransp;
 use Sabre\DAV\Exception\Conflict;
 use Sabre\VObject\Component\VCalendar;
 use Sabre\VObject\Component\VEvent;
+use Sabre\VObject\Component\VTimeZone;
 use Sabre\VObject\ITip\Message;
+use Sabre\VObject\Property;
 use Sabre\VObject\Reader;
 use function Sabre\Uri\split as uriSplit;
 
@@ -86,6 +90,29 @@ class CalendarImpl implements ICreateFromString, IHandleImipMessage {
 		return $this->calendarInfo['{http://apple.com/ns/ical/}calendar-color'];
 	}
 
+	public function getSchedulingTransparency(): ?ScheduleCalendarTransp {
+		return $this->calendarInfo['{' . \OCA\DAV\CalDAV\Schedule\Plugin::NS_CALDAV . '}schedule-calendar-transp'];
+	}
+
+	public function getSchedulingTimezone(): ?VTimeZone {
+		$tzProp = '{' . \OCA\DAV\CalDAV\Schedule\Plugin::NS_CALDAV . '}calendar-timezone';
+		if (!isset($this->calendarInfo[$tzProp])) {
+			return null;
+		}
+		// This property contains a VCALENDAR with a single VTIMEZONE
+		/** @var string $timezoneProp */
+		$timezoneProp = $this->calendarInfo[$tzProp];
+		/** @var VCalendar $vobj */
+		$vobj = Reader::read($timezoneProp);
+		$components = $vobj->getComponents();
+		if(empty($components)) {
+			return null;
+		}
+		/** @var VTimeZone $vtimezone */
+		$vtimezone = $components[0];
+		return $vtimezone;
+	}
+
 	/**
 	 * @param string $pattern which should match within the $searchProperties
 	 * @param array $searchProperties defines the properties within the query pattern should match
diff --git a/apps/dav/lib/CalDAV/FreeBusy/FreeBusyGenerator.php b/apps/dav/lib/CalDAV/FreeBusy/FreeBusyGenerator.php
new file mode 100644
index 00000000000..29daca4e092
--- /dev/null
+++ b/apps/dav/lib/CalDAV/FreeBusy/FreeBusyGenerator.php
@@ -0,0 +1,44 @@
+<?php
+declare(strict_types=1);
+/*
+ * *
+ *  *
+ *  * @copyright 2023 Anna Larch <anna.larch@gmx.net>
+ *  *
+ *  * @author Anna Larch <anna.larch@gmx.net>
+ *  *
+ *  * This library is free software; you can redistribute it and/or
+ *  * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ *  * License as published by the Free Software Foundation; either
+ *  * version 3 of the License, or any later version.
+ *  *
+ *  * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ *  *
+ *
+ */
+
+namespace OCA\DAV\CalDAV\FreeBusy;
+
+use DateTimeInterface;
+use DateTimeZone;
+use Sabre\VObject\Component\VCalendar;
+
+/**
+ * @psalm-suppress PropertyNotSetInConstructor
+ */
+class FreeBusyGenerator extends \Sabre\VObject\FreeBusyGenerator {
+
+	public function __construct() {
+		parent::__construct();
+	}
+
+	public function getVCalendar(): VCalendar {
+		return new VCalendar();
+	}
+}
diff --git a/apps/dav/lib/CalDAV/Schedule/Plugin.php b/apps/dav/lib/CalDAV/Schedule/Plugin.php
index 2845ccdf6c2..16acc72d988 100644
--- a/apps/dav/lib/CalDAV/Schedule/Plugin.php
+++ b/apps/dav/lib/CalDAV/Schedule/Plugin.php
@@ -36,6 +36,7 @@ use OCA\DAV\CalDAV\CalendarHome;
 use OCP\IConfig;
 use Psr\Log\LoggerInterface;
 use Sabre\CalDAV\ICalendar;
+use Sabre\CalDAV\Schedule\IOutbox;
 use Sabre\DAV\INode;
 use Sabre\DAV\IProperties;
 use Sabre\DAV\PropFind;
@@ -44,6 +45,7 @@ use Sabre\DAV\Xml\Property\LocalHref;
 use Sabre\DAVACL\IPrincipal;
 use Sabre\HTTP\RequestInterface;
 use Sabre\HTTP\ResponseInterface;
+use Sabre\VObject;
 use Sabre\VObject\Component;
 use Sabre\VObject\Component\VCalendar;
 use Sabre\VObject\Component\VEvent;
diff --git a/apps/dav/lib/CalDAV/Status/Status.php b/apps/dav/lib/CalDAV/Status/Status.php
new file mode 100644
index 00000000000..8857d0f14e7
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Status/Status.php
@@ -0,0 +1,57 @@
+<?php
+/*
+ * *
+ *  * Dav App
+ *  *
+ *  * @copyright 2023 Anna Larch <anna.larch@gmx.net>
+ *  *
+ *  * @author Anna Larch <anna.larch@gmx.net>
+ *  *
+ *  * This library is free software; you can redistribute it and/or
+ *  * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ *  * License as published by the Free Software Foundation; either
+ *  * version 3 of the License, or any later version.
+ *  *
+ *  * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ *  *
+ *
+ */
+
+namespace OCA\DAV\CalDAV\Status;
+
+class Status {
+
+	public function __construct(private string $status = '', private ?string $message = null, private ?string $customMessage = null){}
+
+	public function getStatus(): string {
+		return $this->status;
+	}
+
+	public function setStatus(string $status): void {
+		$this->status = $status;
+	}
+
+	public function getMessage(): ?string {
+		return $this->message;
+	}
+
+	public function setMessage(?string $message): void {
+		$this->message = $message;
+	}
+
+	public function getCustomMessage(): ?string {
+		return $this->customMessage;
+	}
+
+	public function setCustomMessage(?string $customMessage): void {
+		$this->customMessage = $customMessage;
+	}
+
+
+}
diff --git a/apps/dav/lib/CalDAV/Status/StatusService.php b/apps/dav/lib/CalDAV/Status/StatusService.php
new file mode 100644
index 00000000000..92554f800c3
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Status/StatusService.php
@@ -0,0 +1,236 @@
+<?php
+/*
+ * *
+ *  * Dav App
+ *  *
+ *  * @copyright 2023 Anna Larch <anna.larch@gmx.net>
+ *  *
+ *  * @author Anna Larch <anna.larch@gmx.net>
+ *  *
+ *  * This library is free software; you can redistribute it and/or
+ *  * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ *  * License as published by the Free Software Foundation; either
+ *  * version 3 of the License, or any later version.
+ *  *
+ *  * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ *  *
+ *
+ */
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2023 Anna Larch <anna.larch@gmx.net>
+ *
+ * @author Anna Larch <anna.larch@gmx.net>
+ *
+ * @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\CalDAV\Status;
+
+use DateTimeZone;
+use OC\Calendar\CalendarQuery;
+use OCA\DAV\CalDAV\CalendarImpl;
+use OCA\DAV\CalDAV\FreeBusy\FreeBusyGenerator;
+use OCA\DAV\CalDAV\InvitationResponse\InvitationResponseServer;
+use OCA\DAV\CalDAV\IUser;
+use OCA\DAV\CalDAV\Schedule\Plugin as SchedulePlugin;
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\Calendar\IManager;
+use OCP\Calendar\ISchedulingInformation;
+use OCP\IL10N;
+use OCP\IUser as User;
+use OCP\UserStatus\IUserStatus;
+use Sabre\CalDAV\Xml\Property\ScheduleCalendarTransp;
+use Sabre\DAV\Exception\NotAuthenticated;
+use Sabre\DAVACL\Exception\NeedPrivileges;
+use Sabre\DAVACL\Plugin as AclPlugin;
+use Sabre\VObject\Component;
+use Sabre\VObject\Component\VCalendar;
+use Sabre\VObject\Component\VEvent;
+use Sabre\VObject\Parameter;
+use Sabre\VObject\Property;
+use Sabre\VObject\Reader;
+
+class StatusService {
+	public function __construct(private ITimeFactory $timeFactory,
+								private IManager $calendarManager,
+								private InvitationResponseServer $server,
+								private IL10N $l10n,
+								private FreeBusyGenerator $generator){}
+
+	public function processCalendarAvailability(User $user, ?string $availability): ?Status {
+		$userId = $user->getUID();
+		$email = $user->getEMailAddress();
+		if($email === null) {
+			return null;
+		}
+
+		$server = $this->server->getServer();
+
+		/** @var SchedulePlugin $schedulingPlugin */
+		$schedulingPlugin = $server->getPlugin('caldav-schedule');
+		$caldavNS = '{'.$schedulingPlugin::NS_CALDAV.'}';
+
+		/** @var AclPlugin $aclPlugin */
+		$aclPlugin = $server->getPlugin('acl');
+		if ('mailto:' === substr($email, 0, 7)) {
+			$email = substr($email, 7);
+		}
+
+		$result = $aclPlugin->principalSearch(
+			['{http://sabredav.org/ns}email-address' => $email],
+			[
+				'{DAV:}principal-URL',
+				$caldavNS.'calendar-home-set',
+				$caldavNS.'schedule-inbox-URL',
+				'{http://sabredav.org/ns}email-address',
+			]
+		);
+
+		if (!count($result) || !isset($result[0][200][$caldavNS.'schedule-inbox-URL'])) {
+			return null;
+		}
+
+		$inboxUrl = $result[0][200][$caldavNS.'schedule-inbox-URL']->getHref();
+
+		// Do we have permission?
+		try {
+			$aclPlugin->checkPrivileges($inboxUrl, $caldavNS.'schedule-query-freebusy');
+		} catch (NeedPrivileges | NotAuthenticated $exception) {
+			return null;
+		}
+
+		$now = $this->timeFactory->now();
+		$calendarTimeZone = $now->getTimezone();
+		$calendars = $this->calendarManager->getCalendarsForPrincipal('principals/users/' . $userId);
+		if(empty($calendars)) {
+			return null;
+		}
+
+		$query = $this->calendarManager->newQuery('principals/users/' . $userId);
+		foreach ($calendars as $calendarObject) {
+			// We can only work with a calendar if it exposes its scheduling information
+			if (!$calendarObject instanceof CalendarImpl) {
+				continue;
+			}
+
+			$sct = $calendarObject->getSchedulingTransparency();
+			if ($sct !== null && ScheduleCalendarTransp::TRANSPARENT == strtolower($sct->getValue())) {
+				// If a calendar is marked as 'transparent', it means we must
+				// ignore it for free-busy purposes.
+				continue;
+			}
+
+			/** @var Component\VTimeZone|null $ctz */
+			$ctz = $calendarObject->getSchedulingTimezone();
+			if ($ctz !== null) {
+				$calendarTimeZone = $ctz->getTimeZone();
+			}
+			$query->addSearchCalendar($calendarObject->getUri());
+		}
+
+		$calendarEvents = [];
+		$dtStart = $now;
+		$dtEnd = \DateTimeImmutable::createFromMutable($this->timeFactory->getDateTime('+10 minutes'));
+
+		// Only query the calendars when there's any to search
+		if($query instanceof CalendarQuery && !empty($query->getCalendarUris())) {
+			// Query the next hour
+			$query->setTimerangeStart($dtStart);
+			$query->setTimerangeEnd($dtEnd);
+			$calendarEvents = $this->calendarManager->searchForPrincipal($query);
+		}
+
+		// @todo we can cache that
+		if(empty($availability) && empty($calendarEvents)) {
+			// No availability settings and no calendar events, we can stop here
+			return null;
+		}
+
+		$calendar = $this->generator->getVCalendar();
+		foreach ($calendarEvents as $calendarEvent) {
+			$vEvent = new VEvent($calendar, 'VEVENT');
+			foreach($calendarEvent['objects'] as $component) {
+				foreach ($component as $key =>  $value) {
+					$vEvent->add($key, $value[0]);
+				}
+			}
+			$calendar->add($vEvent);
+		}
+
+		$calendar->METHOD = 'REQUEST';
+
+		$this->generator->setObjects($calendar);
+		$this->generator->setTimeRange($dtStart, $dtEnd);
+		$this->generator->setTimeZone($calendarTimeZone);
+
+		if (!empty($availability)) {
+			$this->generator->setVAvailability(
+				Reader::read(
+					$availability
+				)
+			);
+		}
+		// Generate the intersection of VAVILABILITY and all VEVENTS in all calendars
+		$result = $this->generator->getResult();
+
+		if (!isset($result->VFREEBUSY)) {
+			return null;
+		}
+
+		/** @var Component $freeBusyComponent */
+		$freeBusyComponent = $result->VFREEBUSY;
+		$freeBusyProperties = $freeBusyComponent->select('FREEBUSY');
+		// If there is no FreeBusy property, the time-range is empty and available
+		// so set the status to online as otherwise we will never recover from a BUSY status
+		if (count($freeBusyProperties) === 0) {
+			return new Status(IUserStatus::ONLINE);
+		}
+
+		/** @var Property $freeBusyProperty */
+		$freeBusyProperty = $freeBusyProperties[0];
+		if (!$freeBusyProperty->offsetExists('FBTYPE')) {
+			// If there is no FBTYPE, it means it's busy from a regular event
+			return new Status(IUserStatus::BUSY, IUserStatus::MESSAGE_CALENDAR_BUSY);
+		}
+
+		// If we can't deal with the FBTYPE (custom properties are a possibility)
+		// we should ignore it and leave the current status
+		$fbTypeParameter = $freeBusyProperty->offsetGet('FBTYPE');
+		if (!($fbTypeParameter instanceof Parameter)) {
+			return null;
+		}
+		$fbType = $fbTypeParameter->getValue();
+		switch ($fbType) {
+			case 'BUSY':
+				return new Status(IUserStatus::BUSY, IUserStatus::MESSAGE_CALENDAR_BUSY, $this->l10n->t('In a meeting'));
+			case 'BUSY-UNAVAILABLE':
+				return new Status(IUserStatus::AWAY, IUserStatus::MESSAGE_AVAILABILITY);
+			case 'BUSY-TENTATIVE':
+				return new Status(IUserStatus::AWAY, IUserStatus::MESSAGE_CALENDAR_BUSY_TENTATIVE);
+			default:
+				return null;
+		}
+	}
+}
diff --git a/apps/dav/tests/unit/CalDAV/Status/StatusServiceTest.php b/apps/dav/tests/unit/CalDAV/Status/StatusServiceTest.php
new file mode 100644
index 00000000000..450eac9ee25
--- /dev/null
+++ b/apps/dav/tests/unit/CalDAV/Status/StatusServiceTest.php
@@ -0,0 +1,1508 @@
+<?php
+/**
+ * @copyright 2023 Anna Larch <anna.larch@gmx.net>
+ *
+ * @author Anna Larch <anna.larch@gmx.net>
+ *
+ * @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\Tests\unit\CalDAV\Status;
+
+use OC\Calendar\CalendarQuery;
+use OCA\DAV\CalDAV\CalendarImpl;
+use OCA\DAV\CalDAV\FreeBusy\FreeBusyGenerator;
+use OCA\DAV\CalDAV\InvitationResponse\InvitationResponseServer;
+use OCA\DAV\CalDAV\Schedule\Plugin;
+use OCA\DAV\CalDAV\Status\Status;
+use OCA\DAV\CalDAV\Status\StatusService;
+use OCA\DAV\Connector\Sabre\Server;
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\Calendar\IManager;
+use OCP\IL10N;
+use OCP\IUser;
+use OCP\UserStatus\IUserStatus;
+use PHPUnit\Framework\MockObject\MockObject;
+use Sabre\CalDAV\Xml\Property\ScheduleCalendarTransp;
+use Sabre\DAV\Exception\NotAuthenticated;
+use Sabre\DAV\Xml\Property\LocalHref;
+use Sabre\DAVACL\Exception\NeedPrivileges;
+use Sabre\VObject\Component\VCalendar;
+use Sabre\VObject\Component\VTimeZone;
+use Sabre\VObject\Document;
+use Sabre\VObject\Reader;
+use Test\TestCase;
+
+class StatusServiceTest extends TestCase {
+	private ITimeFactory|MockObject $timeFactory;
+	private IManager|MockObject $calendarManager;
+	private InvitationResponseServer|MockObject $server;
+	private IL10N|MockObject $l10n;
+	private FreeBusyGenerator|MockObject $generator;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->timeFactory = $this->createMock(ITimeFactory::class);
+		$this->calendarManager = $this->createMock(IManager::class);
+		$this->server = $this->createMock(InvitationResponseServer::class);
+		$this->l10n = $this->createMock(IL10N::class);
+		$this->generator = $this->createMock(FreeBusyGenerator::class);
+
+		$this->service = new StatusService($this->timeFactory,
+			$this->calendarManager,
+			$this->server,
+			$this->l10n,
+			$this->generator);
+	}
+
+	public function testNoEmail(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => null,
+		]);
+		$availability = '';
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn(null);
+		$this->server->expects(self::never())
+			->method('getServer');
+		$this->timeFactory->expects(self::never())
+			->method('now');
+		$this->timeFactory->expects(self::never())
+			->method('getDateTime');
+		$this->calendarManager->expects(self::never())
+			->method('getCalendarsForPrincipal');
+		$this->calendarManager->expects(self::never())
+			->method('newQuery');
+		$this->calendarManager->expects(self::never())
+			->method('searchForPrincipal');
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testNoAcl(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$availability = '';
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with([ '{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn([]);
+		$aclPlugin->expects(self::never())
+			->method('checkPrivileges');
+		$this->timeFactory->expects(self::never())
+			->method('now');
+		$this->timeFactory->expects(self::never())
+			->method('getDateTime');
+		$this->calendarManager->expects(self::never())
+			->method('getCalendarsForPrincipal');
+		$this->calendarManager->expects(self::never())
+			->method('newQuery');
+		$this->calendarManager->expects(self::never())
+			->method('searchForPrincipal');
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testNoInbox(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$availability = '';
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with([ '{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn([]);
+		$aclPlugin->expects(self::never())
+			->method('checkPrivileges');
+		$this->timeFactory->expects(self::never())
+			->method('now');
+		$this->timeFactory->expects(self::never())
+			->method('getDateTime');
+		$this->calendarManager->expects(self::never())
+			->method('getCalendarsForPrincipal');
+		$this->calendarManager->expects(self::never())
+			->method('newQuery');
+		$this->calendarManager->expects(self::never())
+			->method('searchForPrincipal');
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testNoPrivilegesAcl(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$availability = '';
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$principal = 'principals/users/admin';
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with([ '{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willThrowException(new NeedPrivileges($principal, ['{DAV:}all']));
+		$this->timeFactory->expects(self::never())
+			->method('now');
+		$this->timeFactory->expects(self::never())
+			->method('getDateTime');
+		$this->calendarManager->expects(self::never())
+			->method('getCalendarsForPrincipal');
+		$this->calendarManager->expects(self::never())
+			->method('newQuery');
+		$this->calendarManager->expects(self::never())
+			->method('searchForPrincipal');
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testNotAuthenticated(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$availability = '';
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with([ '{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willThrowException(new NotAuthenticated());
+		$this->timeFactory->expects(self::never())
+			->method('now');
+		$this->timeFactory->expects(self::never())
+			->method('getDateTime');
+		$this->calendarManager->expects(self::never())
+			->method('getCalendarsForPrincipal');
+		$this->calendarManager->expects(self::never())
+			->method('newQuery');
+		$this->calendarManager->expects(self::never())
+			->method('searchForPrincipal');
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testNoCalendars(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$availability = '';
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1', new \DateTimeZone('UTC'));
+		$principal = 'principals/users/admin';
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with([ '{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([]);
+		$this->timeFactory->expects(self::never())
+			->method('getDateTime');
+		$this->calendarManager->expects(self::never())
+			->method('newQuery');
+		$this->calendarManager->expects(self::never())
+			->method('searchForPrincipal');
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testEmptyAvailabilityAndNoSearchCalendars(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$availability = '';
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$now = new \DateTimeImmutable('1970-1-1', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$principal = 'principals/users/admin';
+		$calendar = $this->createMock(CalendarImpl::class);
+		$query = $this->createMock(CalendarQuery::class);
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with([ '{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('transparent'));
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$this->calendarManager->expects(self::never())
+			->method('searchForPrincipal');
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testEmptyAvailabilityAndSearchCalendarsNoResults(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$availability = '';
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::never())
+			->method('getVCalendar');
+		$this->generator->expects(self::never())
+			->method('setObjects');
+		$this->generator->expects(self::never())
+			->method('setTimeRange');
+		$this->generator->expects(self::never())
+			->method('setTimeZone');
+		$this->generator->expects(self::never())
+			->method('setVAvailability');
+		$this->generator->expects(self::never())
+			->method('getResult');
+
+		$status = $this->service->processCalendarAvailability($user, $availability);
+		$this->assertNull($status);
+	}
+
+	public function testAvailabilityAndSearchCalendarsNoResults(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+		$vCalendar = $this->createMock(VCalendar::class);
+		$availability = $this->getVAvailability();
+		$result = Reader::read('BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 4.5.3//EN
+		CALSCALE:GREGORIAN
+METHOD:REQUEST
+END:VCALENDAR');
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::once())
+			->method('getVCalendar')
+			->willReturn($vCalendar);
+		$vCalendar->expects(self::never())
+			->method('add');
+		$this->generator->expects(self::once())
+			->method('setObjects')
+			->with($vCalendar);
+		$this->generator->expects(self::once())
+			->method('setTimeRange')
+			->with($now, $immutableInTenMinutes);
+		$this->generator->expects(self::once())
+			->method('setTimeZone')
+			->with($timezone);
+		$this->generator->expects(self::once())
+			->method('setVAvailability')
+			->with($availability);
+		$this->generator->expects(self::once())
+			->method('getResult')
+			->willReturn($result);
+
+		$status = $this->service->processCalendarAvailability($user, $availability->serialize());
+		$this->assertNull($status);
+	}
+
+	public function testAvailabilityAndSearchCalendarsStatusOnline(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+		$vCalendar = $this->createMock(VCalendar::class);
+		$availability = $this->getVAvailability();
+		$result = Reader::read('BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 4.5.3//EN
+		CALSCALE:GREGORIAN
+METHOD:REQUEST
+BEGIN:VFREEBUSY
+DTSTART:19700101T000000Z
+DTEND:19700101T003600Z
+DTSTAMP:19700101T000200Z
+END:VFREEBUSY
+END:VCALENDAR');
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::once())
+			->method('getVCalendar')
+			->willReturn($vCalendar);
+		$vCalendar->expects(self::never())
+			->method('add');
+		$this->generator->expects(self::once())
+			->method('setObjects')
+			->with($vCalendar);
+		$this->generator->expects(self::once())
+			->method('setTimeRange')
+			->with($now, $immutableInTenMinutes);
+		$this->generator->expects(self::once())
+			->method('setTimeZone')
+			->with($timezone);
+		$this->generator->expects(self::once())
+			->method('setVAvailability')
+			->with($availability);
+		$this->generator->expects(self::once())
+			->method('getResult')
+			->willReturn($result);
+
+		$status = $this->service->processCalendarAvailability($user, $availability->serialize());
+		$this->assertEquals(new Status(IUserStatus::ONLINE), $status);
+	}
+
+	public function testAvailabilityAndSearchCalendarsStatusBusyNoFBType(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+		$vCalendar = $this->createMock(VCalendar::class);
+		$availability = $this->getVAvailability();
+		$result = Reader::read('BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 4.5.3//EN
+		CALSCALE:GREGORIAN
+METHOD:REQUEST
+BEGIN:VFREEBUSY
+DTSTART:19700101T000000Z
+DTEND:19700101T003600Z
+DTSTAMP:19700101T000200Z
+FREEBUSY:19700101T000000Z/19700101T003600Z
+END:VFREEBUSY
+END:VCALENDAR');
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::once())
+			->method('getVCalendar')
+			->willReturn($vCalendar);
+		$vCalendar->expects(self::never())
+			->method('add');
+		$this->generator->expects(self::once())
+			->method('setObjects')
+			->with($vCalendar);
+		$this->generator->expects(self::once())
+			->method('setTimeRange')
+			->with($now, $immutableInTenMinutes);
+		$this->generator->expects(self::once())
+			->method('setTimeZone')
+			->with($timezone);
+		$this->generator->expects(self::once())
+			->method('setVAvailability')
+			->with($availability);
+		$this->generator->expects(self::once())
+			->method('getResult')
+			->willReturn($result);
+
+		$status = $this->service->processCalendarAvailability($user, $availability->serialize());
+		$this->assertEquals(new Status(IUserStatus::BUSY, IUserStatus::MESSAGE_CALENDAR_BUSY), $status);
+	}
+
+	public function testAvailabilityAndSearchCalendarsStatusBusy(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+		$vCalendar = $this->createMock(VCalendar::class);
+		$availability = $this->getVAvailability();
+		$result = Reader::read('BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 4.5.3//EN
+		CALSCALE:GREGORIAN
+METHOD:REQUEST
+BEGIN:VFREEBUSY
+DTSTART:19700101T000000Z
+DTEND:19700101T003600Z
+DTSTAMP:19700101T000200Z
+FREEBUSY;FBTYPE=BUSY:19700101T000000Z/19700101T003600Z
+END:VFREEBUSY
+END:VCALENDAR');
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::once())
+			->method('getVCalendar')
+			->willReturn($vCalendar);
+		$vCalendar->expects(self::never())
+			->method('add');
+		$this->generator->expects(self::once())
+			->method('setObjects')
+			->with($vCalendar);
+		$this->generator->expects(self::once())
+			->method('setTimeRange')
+			->with($now, $immutableInTenMinutes);
+		$this->generator->expects(self::once())
+			->method('setTimeZone')
+			->with($timezone);
+		$this->generator->expects(self::once())
+			->method('setVAvailability')
+			->with($availability);
+		$this->generator->expects(self::once())
+			->method('getResult')
+			->willReturn($result);
+		$this->l10n->expects(self::once())
+			->method('t')
+			->with('In a meeting')
+			->willReturn('In a meeting');
+
+		$status = $this->service->processCalendarAvailability($user, $availability->serialize());
+		$this->assertEquals(new Status(IUserStatus::BUSY, IUserStatus::MESSAGE_CALENDAR_BUSY, 'In a meeting'), $status);
+	}
+
+	public function testAvailabilityAndSearchCalendarsStatusBusyUnavailable(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+		$vCalendar = $this->createMock(VCalendar::class);
+		$availability = $this->getVAvailability();
+		$result = Reader::read('BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 4.5.3//EN
+		CALSCALE:GREGORIAN
+METHOD:REQUEST
+BEGIN:VFREEBUSY
+DTSTART:19700101T000000Z
+DTEND:19700101T003600Z
+DTSTAMP:19700101T000200Z
+FREEBUSY;FBTYPE=BUSY-UNAVAILABLE:19700101T000000Z/19700101T003600Z
+END:VFREEBUSY
+END:VCALENDAR');
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::once())
+			->method('getVCalendar')
+			->willReturn($vCalendar);
+		$vCalendar->expects(self::never())
+			->method('add');
+		$this->generator->expects(self::once())
+			->method('setObjects')
+			->with($vCalendar);
+		$this->generator->expects(self::once())
+			->method('setTimeRange')
+			->with($now, $immutableInTenMinutes);
+		$this->generator->expects(self::once())
+			->method('setTimeZone')
+			->with($timezone);
+		$this->generator->expects(self::once())
+			->method('setVAvailability')
+			->with($availability);
+		$this->generator->expects(self::once())
+			->method('getResult')
+			->willReturn($result);
+		$this->l10n->expects(self::never())
+			->method('t');
+		$status = $this->service->processCalendarAvailability($user, $availability->serialize());
+		$this->assertEquals(new Status(IUserStatus::AWAY, IUserStatus::MESSAGE_AVAILABILITY), $status);
+	}
+
+	public function testAvailabilityAndSearchCalendarsStatusBusyTentative(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+		$vCalendar = $this->createMock(VCalendar::class);
+		$availability = $this->getVAvailability();
+		$result = Reader::read('BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 4.5.3//EN
+		CALSCALE:GREGORIAN
+METHOD:REQUEST
+BEGIN:VFREEBUSY
+DTSTART:19700101T000000Z
+DTEND:19700101T003600Z
+DTSTAMP:19700101T000200Z
+FREEBUSY;FBTYPE=BUSY-TENTATIVE:19700101T000000Z/19700101T003600Z
+END:VFREEBUSY
+END:VCALENDAR');
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::once())
+			->method('getVCalendar')
+			->willReturn($vCalendar);
+		$vCalendar->expects(self::never())
+			->method('add');
+		$this->generator->expects(self::once())
+			->method('setObjects')
+			->with($vCalendar);
+		$this->generator->expects(self::once())
+			->method('setTimeRange')
+			->with($now, $immutableInTenMinutes);
+		$this->generator->expects(self::once())
+			->method('setTimeZone')
+			->with($timezone);
+		$this->generator->expects(self::once())
+			->method('setVAvailability')
+			->with($availability);
+		$this->generator->expects(self::once())
+			->method('getResult')
+			->willReturn($result);
+		$this->l10n->expects(self::never())
+			->method('t');
+		$status = $this->service->processCalendarAvailability($user, $availability->serialize());
+		$this->assertEquals(new Status(IUserStatus::AWAY, IUserStatus::MESSAGE_CALENDAR_BUSY_TENTATIVE), $status);
+	}
+
+	public function testAvailabilityAndSearchCalendarsStatusBusyUnknownProperty(): void {
+		$user = $this->createConfiguredMock(IUser::class, [
+			'getUID' => 'admin',
+			'getEMailAddress' => 'test@test.com',
+		]);
+		$server = $this->createMock(Server::class);
+		$schedulingPlugin = $this->createMock(Plugin::class);
+		$aclPlugin = $this->createMock(\Sabre\DAVACL\Plugin::class);
+		$calendarHome = $this->createMock(LocalHref::class);
+		$acl = [[200 => ['{urn:ietf:params:xml:ns:caldav}schedule-inbox-URL' => $calendarHome]]];
+		$now = new \DateTimeImmutable('1970-1-1 00:00', new \DateTimeZone('UTC'));
+		$inTenMinutes = new \DateTime('1970-1-1 01:00');
+		$immutableInTenMinutes = \DateTimeImmutable::createFromMutable($inTenMinutes);
+		$principal = 'principals/users/admin';
+		$query = $this->createMock(CalendarQuery::class);
+		$timezone = new \DateTimeZone('UTC');
+		$timezoneObj = $this->createMock(VTimeZone::class);
+		$calendar = $this->createMock(CalendarImpl::class);
+		$vCalendar = $this->createMock(VCalendar::class);
+		$availability = $this->getVAvailability();
+		$result = Reader::read('BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 4.5.3//EN
+		CALSCALE:GREGORIAN
+METHOD:REQUEST
+BEGIN:VFREEBUSY
+DTSTART:19700101T000000Z
+DTEND:19700101T003600Z
+DTSTAMP:19700101T000200Z
+FREEBUSY;FBTYPE=X-MEETING:19700101T000000Z/19700101T003600Z
+END:VFREEBUSY
+END:VCALENDAR');
+
+		$user->expects(self::once())
+			->method('getUID')
+			->willReturn('admin');
+		$user->expects(self::once())
+			->method('getEMailAddress')
+			->willReturn('test@test.com');
+		$this->server->expects(self::once())
+			->method('getServer')
+			->willReturn($server);
+		$server->expects(self::exactly(2))
+			->method('getPlugin')
+			->withConsecutive(
+				['caldav-schedule'],
+				['acl'],
+			)->willReturnOnConsecutiveCalls($schedulingPlugin, $aclPlugin);
+		$aclPlugin->expects(self::once())
+			->method('principalSearch')
+			->with(['{http://sabredav.org/ns}email-address' => 'test@test.com'])
+			->willReturn($acl);
+		$calendarHome->expects(self::once())
+			->method('getHref')
+			->willReturn('calendars/admin/inbox/');
+		$aclPlugin->expects(self::once())
+			->method('checkPrivileges')
+			->willReturn(true);
+		$this->timeFactory->expects(self::once())
+			->method('now')
+			->willReturn($now);
+		$this->calendarManager->expects(self::once())
+			->method('getCalendarsForPrincipal')
+			->with($principal)
+			->willReturn([$calendar]);
+		$this->calendarManager->expects(self::once())
+			->method('newQuery')
+			->with($principal)
+			->willReturn($query);
+		$calendar->expects(self::once())
+			->method('getSchedulingTransparency')
+			->willReturn(new ScheduleCalendarTransp('opaque'));
+		$calendar->expects(self::once())
+			->method('getSchedulingTimezone')
+			->willReturn($timezoneObj);
+		$timezoneObj->expects(self::once())
+			->method('getTimeZone')
+			->willReturn($timezone);
+		$calendar->expects(self::once())
+			->method('getUri');
+		$query->expects(self::once())
+			->method('addSearchCalendar');
+		$query->expects(self::once())
+			->method('getCalendarUris')
+			->willReturn([$calendar]);
+		$this->timeFactory->expects(self::once())
+			->method('getDateTime')
+			->with('+10 minutes')
+			->willReturn($inTenMinutes);
+		$query->expects(self::once())
+			->method('setTimerangeStart')
+			->with($now);
+		$query->expects(self::once())
+			->method('setTimerangeEnd')
+			->with($immutableInTenMinutes);
+		$this->calendarManager->expects(self::once())
+			->method('searchForPrincipal')
+			->with($query)
+			->willReturn([]);
+		$this->generator->expects(self::once())
+			->method('getVCalendar')
+			->willReturn($vCalendar);
+		$vCalendar->expects(self::never())
+			->method('add');
+		$this->generator->expects(self::once())
+			->method('setObjects')
+			->with($vCalendar);
+		$this->generator->expects(self::once())
+			->method('setTimeRange')
+			->with($now, $immutableInTenMinutes);
+		$this->generator->expects(self::once())
+			->method('setTimeZone')
+			->with($timezone);
+		$this->generator->expects(self::once())
+			->method('setVAvailability')
+			->with($availability);
+		$this->generator->expects(self::once())
+			->method('getResult')
+			->willReturn($result);
+		$this->l10n->expects(self::never())
+			->method('t');
+		$status = $this->service->processCalendarAvailability($user, $availability->serialize());
+		$this->assertNull($status);
+	}
+
+	private function getVAvailability(): Document {
+		return Reader::read('BEGIN:VCALENDAR
+PRODID:Nextcloud DAV app
+BEGIN:VTIMEZONE
+TZID:Europe/Vienna
+BEGIN:STANDARD
+TZNAME:CET
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+DTSTART:19701025T030000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
+BEGIN:DAYLIGHT
+TZNAME:CEST
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+DTSTART:19700329T020000
+RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VAVAILABILITY
+BEGIN:AVAILABLE
+DTSTART;TZID=Europe/Vienna:20231025T000000
+DTEND;TZID=Europe/Vienna:20231025T235900
+UID:d866782e-e003-4906-9ece-303f270a2c6b
+RRULE:FREQ=WEEKLY;BYDAY=MO,TU,WE,TH,FR,SA,SU
+END:AVAILABLE
+END:VAVAILABILITY
+END:VCALENDAR');
+	}
+}