Welcome to mirror list, hosted at ThFree Co, Russian Federation.

github.com/nextcloud/server.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'apps/dav/lib/CalDAV/Reminder/NotificationProvider')
-rw-r--r--apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php188
-rw-r--r--apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php37
-rw-r--r--apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php503
-rw-r--r--apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php39
-rw-r--r--apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php139
5 files changed, 906 insertions, 0 deletions
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php
new file mode 100644
index 00000000000..6e3a8eaddef
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php
@@ -0,0 +1,188 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019, Thomas Citharel
+ * @copyright Copyright (c) 2019, Georg Ehrke
+ *
+ * @author Thomas Citharel <tcit@tcit.fr>
+ * @author Georg Ehrke <oc.list@georgehrke.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\CalDAV\Reminder\NotificationProvider;
+
+use OCA\DAV\CalDAV\Reminder\INotificationProvider;
+use OCP\IConfig;
+use OCP\IL10N;
+use OCP\ILogger;
+use OCP\IURLGenerator;
+use OCP\L10N\IFactory as L10NFactory;
+use OCP\IUser;
+use Sabre\VObject\Component\VEvent;
+use Sabre\VObject\DateTimeParser;
+use Sabre\VObject\Property;
+
+/**
+ * Class AbstractProvider
+ *
+ * @package OCA\DAV\CalDAV\Reminder\NotificationProvider
+ */
+abstract class AbstractProvider implements INotificationProvider {
+
+ /** @var string */
+ public const NOTIFICATION_TYPE = '';
+
+ /** @var ILogger */
+ protected $logger;
+
+ /** @var L10NFactory */
+ private $l10nFactory;
+
+ /** @var IL10N[] */
+ private $l10ns;
+
+ /** @var string */
+ private $fallbackLanguage;
+
+ /** @var IURLGenerator */
+ protected $urlGenerator;
+
+ /** @var IConfig */
+ protected $config;
+
+ /**
+ * @param ILogger $logger
+ * @param L10NFactory $l10nFactory
+ * @param IConfig $config
+ * @param IUrlGenerator $urlGenerator
+ */
+ public function __construct(ILogger $logger,
+ L10NFactory $l10nFactory,
+ IURLGenerator $urlGenerator,
+ IConfig $config) {
+ $this->logger = $logger;
+ $this->l10nFactory = $l10nFactory;
+ $this->urlGenerator = $urlGenerator;
+ $this->config = $config;
+ }
+
+ /**
+ * Send notification
+ *
+ * @param VEvent $vevent
+ * @param string $calendarDisplayName
+ * @param IUser[] $users
+ * @return void
+ */
+ abstract public function send(VEvent $vevent,
+ string $calendarDisplayName,
+ array $users=[]): void;
+
+ /**
+ * @return string
+ */
+ protected function getFallbackLanguage():string {
+ if ($this->fallbackLanguage) {
+ return $this->fallbackLanguage;
+ }
+
+ $fallbackLanguage = $this->l10nFactory->findLanguage();
+ $this->fallbackLanguage = $fallbackLanguage;
+
+ return $fallbackLanguage;
+ }
+
+ /**
+ * @param string $lang
+ * @return bool
+ */
+ protected function hasL10NForLang(string $lang):bool {
+ return $this->l10nFactory->languageExists('dav', $lang);
+ }
+
+ /**
+ * @param string $lang
+ * @return IL10N
+ */
+ protected function getL10NForLang(string $lang):IL10N {
+ if (isset($this->l10ns[$lang])) {
+ return $this->l10ns[$lang];
+ }
+
+ $l10n = $this->l10nFactory->get('dav', $lang);
+ $this->l10ns[$lang] = $l10n;
+
+ return $l10n;
+ }
+
+ /**
+ * @param VEvent $vevent
+ * @return string
+ */
+ private function getStatusOfEvent(VEvent $vevent):string {
+ if ($vevent->STATUS) {
+ return (string) $vevent->STATUS;
+ }
+
+ // Doesn't say so in the standard,
+ // but we consider events without a status
+ // to be confirmed
+ return 'CONFIRMED';
+ }
+
+ /**
+ * @param VEvent $vevent
+ * @return bool
+ */
+ protected function isEventTentative(VEvent $vevent):bool {
+ return $this->getStatusOfEvent($vevent) === 'TENTATIVE';
+ }
+
+ /**
+ * @param VEvent $vevent
+ * @return Property\ICalendar\DateTime
+ */
+ protected function getDTEndFromEvent(VEvent $vevent):Property\ICalendar\DateTime {
+ if (isset($vevent->DTEND)) {
+ return $vevent->DTEND;
+ }
+
+ if (isset($vevent->DURATION)) {
+ $isFloating = $vevent->DTSTART->isFloating();
+ /** @var Property\ICalendar\DateTime $end */
+ $end = clone $vevent->DTSTART;
+ $endDateTime = $end->getDateTime();
+ $endDateTime = $endDateTime->add(DateTimeParser::parse($vevent->DURATION->getValue()));
+ $end->setDateTime($endDateTime, $isFloating);
+
+ return $end;
+ }
+
+ if (!$vevent->DTSTART->hasTime()) {
+ $isFloating = $vevent->DTSTART->isFloating();
+ /** @var Property\ICalendar\DateTime $end */
+ $end = clone $vevent->DTSTART;
+ $endDateTime = $end->getDateTime();
+ $endDateTime = $endDateTime->modify('+1 day');
+ $end->setDateTime($endDateTime, $isFloating);
+
+ return $end;
+ }
+
+ return clone $vevent->DTSTART;
+ }
+}
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php
new file mode 100644
index 00000000000..ad4ac342f66
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php
@@ -0,0 +1,37 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019, Georg Ehrke
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program. If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+namespace OCA\DAV\CalDAV\Reminder\NotificationProvider;
+
+/**
+ * Class AudioProvider
+ *
+ * This class only extends PushProvider at the moment. It does not provide true
+ * audio-alarms yet, but it's better than no alarm at all right now.
+ *
+ * @package OCA\DAV\CalDAV\Reminder\NotificationProvider
+ */
+class AudioProvider extends PushProvider {
+
+ /** @var string */
+ public const NOTIFICATION_TYPE = 'AUDIO';
+}
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
new file mode 100644
index 00000000000..f5932a87b3e
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
@@ -0,0 +1,503 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019, Thomas Citharel
+ * @copyright Copyright (c) 2019, Georg Ehrke
+ *
+ * @author Thomas Citharel <tcit@tcit.fr>
+ * @author Georg Ehrke <oc.list@georgehrke.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\CalDAV\Reminder\NotificationProvider;
+
+use \DateTime;
+use OCP\IConfig;
+use OCP\IL10N;
+use OCP\ILogger;
+use OCP\IURLGenerator;
+use OCP\L10N\IFactory as L10NFactory;
+use OCP\Mail\IEMailTemplate;
+use OCP\Mail\IMailer;
+use OCP\IUser;
+use Sabre\VObject\Component\VEvent;
+use Sabre\VObject;
+use Sabre\VObject\Parameter;
+use Sabre\VObject\Property;
+
+/**
+ * Class EmailProvider
+ *
+ * @package OCA\DAV\CalDAV\Reminder\NotificationProvider
+ */
+class EmailProvider extends AbstractProvider {
+
+ /** @var string */
+ public const NOTIFICATION_TYPE = 'EMAIL';
+
+ /** @var IMailer */
+ private $mailer;
+
+ /**
+ * @param IConfig $config
+ * @param IMailer $mailer
+ * @param ILogger $logger
+ * @param L10NFactory $l10nFactory
+ * @param IUrlGenerator $urlGenerator
+ */
+ public function __construct(IConfig $config,
+ IMailer $mailer,
+ ILogger $logger,
+ L10NFactory $l10nFactory,
+ IURLGenerator $urlGenerator) {
+ parent::__construct($logger, $l10nFactory, $urlGenerator, $config);
+ $this->mailer = $mailer;
+ }
+
+ /**
+ * Send out notification via email
+ *
+ * @param VEvent $vevent
+ * @param string $calendarDisplayName
+ * @param array $users
+ * @throws \Exception
+ */
+ public function send(VEvent $vevent,
+ string $calendarDisplayName,
+ array $users=[]):void {
+ $fallbackLanguage = $this->getFallbackLanguage();
+
+ $emailAddressesOfSharees = $this->getEMailAddressesOfAllUsersWithWriteAccessToCalendar($users);
+ $emailAddressesOfAttendees = $this->getAllEMailAddressesFromEvent($vevent);
+
+ // Quote from php.net:
+ // If the input arrays have the same string keys, then the later value for that key will overwrite the previous one.
+ // => if there are duplicate email addresses, it will always take the system value
+ $emailAddresses = array_merge(
+ $emailAddressesOfAttendees,
+ $emailAddressesOfSharees
+ );
+
+ $sortedByLanguage = $this->sortEMailAddressesByLanguage($emailAddresses, $fallbackLanguage);
+ $organizer = $this->getOrganizerEMailAndNameFromEvent($vevent);
+
+ foreach($sortedByLanguage as $lang => $emailAddresses) {
+ if (!$this->hasL10NForLang($lang)) {
+ $lang = $fallbackLanguage;
+ }
+ $l10n = $this->getL10NForLang($lang);
+ $fromEMail = \OCP\Util::getDefaultEmailAddress('reminders-noreply');
+
+ $template = $this->mailer->createEMailTemplate('dav.calendarReminder');
+ $template->addHeader();
+ $this->addSubjectAndHeading($template, $l10n, $vevent);
+ $this->addBulletList($template, $l10n, $calendarDisplayName, $vevent);
+ $template->addFooter();
+
+ foreach ($emailAddresses as $emailAddress) {
+ $message = $this->mailer->createMessage();
+ $message->setFrom([$fromEMail]);
+ if ($organizer) {
+ $message->setReplyTo($organizer);
+ }
+ $message->setTo([$emailAddress]);
+ $message->useTemplate($template);
+
+ try {
+ $failed = $this->mailer->send($message);
+ if ($failed) {
+ $this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' => implode(', ', $failed)]);
+ }
+ } catch (\Exception $ex) {
+ $this->logger->logException($ex, ['app' => 'dav']);
+ }
+ }
+ }
+ }
+
+ /**
+ * @param IEMailTemplate $template
+ * @param IL10N $l10n
+ * @param VEvent $vevent
+ */
+ private function addSubjectAndHeading(IEMailTemplate $template, IL10N $l10n, VEvent $vevent):void {
+ $template->setSubject('Notification: ' . $this->getTitleFromVEvent($vevent, $l10n));
+ $template->addHeading($this->getTitleFromVEvent($vevent, $l10n));
+ }
+
+ /**
+ * @param IEMailTemplate $template
+ * @param IL10N $l10n
+ * @param string $calendarDisplayName
+ * @param array $eventData
+ */
+ private function addBulletList(IEMailTemplate $template,
+ IL10N $l10n,
+ string $calendarDisplayName,
+ VEvent $vevent):void {
+ $template->addBodyListItem($calendarDisplayName, $l10n->t('Calendar:'),
+ $this->getAbsoluteImagePath('actions/info.svg'));
+
+ $template->addBodyListItem($this->generateDateString($l10n, $vevent), $l10n->t('Date:'),
+ $this->getAbsoluteImagePath('places/calendar.svg'));
+
+ if (isset($vevent->LOCATION)) {
+ $template->addBodyListItem((string) $vevent->LOCATION, $l10n->t('Where:'),
+ $this->getAbsoluteImagePath('actions/address.svg'));
+ }
+ if (isset($vevent->DESCRIPTION)) {
+ $template->addBodyListItem((string) $vevent->DESCRIPTION, $l10n->t('Description:'),
+ $this->getAbsoluteImagePath('actions/more.svg'));
+ }
+ }
+
+ /**
+ * @param string $path
+ * @return string
+ */
+ private function getAbsoluteImagePath(string $path):string {
+ return $this->urlGenerator->getAbsoluteURL(
+ $this->urlGenerator->imagePath('core', $path)
+ );
+ }
+
+ /**
+ * @param VEvent $vevent
+ * @return array|null
+ */
+ private function getOrganizerEMailAndNameFromEvent(VEvent $vevent):?array {
+ if (!$vevent->ORGANIZER) {
+ return null;
+ }
+
+ $organizer = $vevent->ORGANIZER;
+ if (strcasecmp($organizer->getValue(), 'mailto:') !== 0) {
+ return null;
+ }
+
+ $organizerEMail = substr($organizer->getValue(), 7);
+
+ $name = $organizer->offsetGet('CN');
+ if ($name instanceof Parameter) {
+ return [$organizerEMail => $name];
+ }
+
+ return [$organizerEMail];
+ }
+
+ /**
+ * @param array $emails
+ * @param string $defaultLanguage
+ * @return array
+ */
+ private function sortEMailAddressesByLanguage(array $emails,
+ string $defaultLanguage):array {
+ $sortedByLanguage = [];
+
+ foreach($emails as $emailAddress => $parameters) {
+ if (isset($parameters['LANG'])) {
+ $lang = $parameters['LANG'];
+ } else {
+ $lang = $defaultLanguage;
+ }
+
+ if (!isset($sortedByLanguage[$lang])) {
+ $sortedByLanguage[$lang] = [];
+ }
+
+ $sortedByLanguage[$lang][] = $emailAddress;
+ }
+
+ return $sortedByLanguage;
+ }
+
+ /**
+ * @param VEvent $vevent
+ * @return array
+ */
+ private function getAllEMailAddressesFromEvent(VEvent $vevent):array {
+ $emailAddresses = [];
+
+ if (isset($vevent->ATTENDEE)) {
+ foreach ($vevent->ATTENDEE as $attendee) {
+ if (!($attendee instanceof VObject\Property)) {
+ continue;
+ }
+
+ $cuType = $this->getCUTypeOfAttendee($attendee);
+ if (\in_array($cuType, ['RESOURCE', 'ROOM', 'UNKNOWN'])) {
+ // Don't send emails to things
+ continue;
+ }
+
+ $partstat = $this->getPartstatOfAttendee($attendee);
+ if ($partstat === 'DECLINED') {
+ // Don't send out emails to people who declined
+ continue;
+ }
+ if ($partstat === 'DELEGATED') {
+ $delegates = $attendee->offsetGet('DELEGATED-TO');
+ if (!($delegates instanceof VObject\Parameter)) {
+ continue;
+ }
+
+ $emailAddressesOfDelegates = $delegates->getParts();
+ foreach($emailAddressesOfDelegates as $addressesOfDelegate) {
+ if (strcasecmp($addressesOfDelegate, 'mailto:') === 0) {
+ $emailAddresses[substr($addressesOfDelegate, 7)] = [];
+ }
+ }
+
+ continue;
+ }
+
+ $emailAddressOfAttendee = $this->getEMailAddressOfAttendee($attendee);
+ if ($emailAddressOfAttendee !== null) {
+ $properties = [];
+
+ $langProp = $attendee->offsetGet('LANG');
+ if ($langProp instanceof VObject\Parameter) {
+ $properties['LANG'] = $langProp->getValue();
+ }
+
+ $emailAddresses[$emailAddressOfAttendee] = $properties;
+ }
+ }
+ }
+
+ if (isset($vevent->ORGANIZER) && $this->hasAttendeeMailURI($vevent->ORGANIZER)) {
+ $emailAddresses[$this->getEMailAddressOfAttendee($vevent->ORGANIZER)] = [];
+ }
+
+ return $emailAddresses;
+ }
+
+
+
+ /**
+ * @param VObject\Property $attendee
+ * @return string
+ */
+ private function getCUTypeOfAttendee(VObject\Property $attendee):string {
+ $cuType = $attendee->offsetGet('CUTYPE');
+ if ($cuType instanceof VObject\Parameter) {
+ return strtoupper($cuType->getValue());
+ }
+
+ return 'INDIVIDUAL';
+ }
+
+ /**
+ * @param VObject\Property $attendee
+ * @return string
+ */
+ private function getPartstatOfAttendee(VObject\Property $attendee):string {
+ $partstat = $attendee->offsetGet('PARTSTAT');
+ if ($partstat instanceof VObject\Parameter) {
+ return strtoupper($partstat->getValue());
+ }
+
+ return 'NEEDS-ACTION';
+ }
+
+ /**
+ * @param VObject\Property $attendee
+ * @return bool
+ */
+ private function hasAttendeeMailURI(VObject\Property $attendee):bool {
+ return stripos($attendee->getValue(), 'mailto:') === 0;
+ }
+
+ /**
+ * @param VObject\Property $attendee
+ * @return string|null
+ */
+ private function getEMailAddressOfAttendee(VObject\Property $attendee):?string {
+ if (!$this->hasAttendeeMailURI($attendee)) {
+ return null;
+ }
+
+ return substr($attendee->getValue(), 7);
+ }
+
+ /**
+ * @param array $users
+ * @return array
+ */
+ private function getEMailAddressesOfAllUsersWithWriteAccessToCalendar(array $users):array {
+ $emailAddresses = [];
+
+ foreach($users as $user) {
+ $emailAddress = $user->getEMailAddress();
+ if ($emailAddress) {
+ $lang = $this->getLangForUser($user);
+ if ($lang) {
+ $emailAddresses[$emailAddress] = [
+ 'LANG' => $lang,
+ ];
+ } else {
+ $emailAddresses[$emailAddress] = [];
+ }
+ }
+ }
+
+ return $emailAddresses;
+ }
+
+ /**
+ * @param IUser $user
+ * @return string
+ */
+ private function getLangForUser(IUser $user): ?string {
+ return $this->config->getUserValue($user->getUID(), 'core', 'lang', null);
+ }
+
+ /**
+ * @param IL10N $l10n
+ * @param VEvent $vevent
+ * @return string
+ * @throws \Exception
+ */
+ private function generateDateString(IL10N $l10n, VEvent $vevent):string {
+ $isAllDay = $vevent->DTSTART instanceof Property\ICalendar\Date;
+
+ /** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtstart */
+ /** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtend */
+ /** @var \DateTimeImmutable $dtstartDt */
+ $dtstartDt = $vevent->DTSTART->getDateTime();
+ /** @var \DateTimeImmutable $dtendDt */
+ $dtendDt = $this->getDTEndFromEvent($vevent)->getDateTime();
+
+ $diff = $dtstartDt->diff($dtendDt);
+
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ $dtstartDt = new \DateTime($dtstartDt->format(\DateTime::ATOM));
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ $dtendDt = new \DateTime($dtendDt->format(\DateTime::ATOM));
+
+ if ($isAllDay) {
+ // One day event
+ if ($diff->days === 1) {
+ return $this->getDateString($l10n, $dtstartDt);
+ }
+
+ return implode(' - ', [
+ $this->getDateString($l10n, $dtstartDt),
+ $this->getDateString($l10n, $dtendDt),
+ ]);
+ }
+
+ $startTimezone = $endTimezone = null;
+ if (!$vevent->DTSTART->isFloating()) {
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ $startTimezone = $vevent->DTSTART->getDateTime()->getTimezone()->getName();
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ $endTimezone = $this->getDTEndFromEvent($vevent)->getDateTime()->getTimezone()->getName();
+ }
+
+ $localeStart = implode(', ', [
+ $this->getWeekDayName($l10n, $dtstartDt),
+ $this->getDateTimeString($l10n, $dtstartDt)
+ ]);
+
+ // always show full date with timezone if timezones are different
+ if ($startTimezone !== $endTimezone) {
+ $localeEnd = implode(', ', [
+ $this->getWeekDayName($l10n, $dtendDt),
+ $this->getDateTimeString($l10n, $dtendDt)
+ ]);
+
+ return $localeStart
+ . ' (' . $startTimezone . ') '
+ . ' - '
+ . $localeEnd
+ . ' (' . $endTimezone . ')';
+ }
+
+ // Show only the time if the day is the same
+ $localeEnd = $this->isDayEqual($dtstartDt, $dtendDt)
+ ? $this->getTimeString($l10n, $dtendDt)
+ : implode(', ', [
+ $this->getWeekDayName($l10n, $dtendDt),
+ $this->getDateTimeString($l10n, $dtendDt)
+ ]);
+
+ return $localeStart
+ . ' - '
+ . $localeEnd
+ . ' (' . $startTimezone . ')';
+ }
+
+ /**
+ * @param DateTime $dtStart
+ * @param DateTime $dtEnd
+ * @return bool
+ */
+ private function isDayEqual(DateTime $dtStart,
+ DateTime $dtEnd):bool {
+ return $dtStart->format('Y-m-d') === $dtEnd->format('Y-m-d');
+ }
+
+ /**
+ * @param IL10N $l10n
+ * @param DateTime $dt
+ * @return string
+ */
+ private function getWeekDayName(IL10N $l10n, DateTime $dt):string {
+ return $l10n->l('weekdayName', $dt, ['width' => 'abbreviated']);
+ }
+
+ /**
+ * @param IL10N $l10n
+ * @param DateTime $dt
+ * @return string
+ */
+ private function getDateString(IL10N $l10n, DateTime $dt):string {
+ return $l10n->l('date', $dt, ['width' => 'medium']);
+ }
+
+ /**
+ * @param IL10N $l10n
+ * @param DateTime $dt
+ * @return string
+ */
+ private function getDateTimeString(IL10N $l10n, DateTime $dt):string {
+ return $l10n->l('datetime', $dt, ['width' => 'medium|short']);
+ }
+
+ /**
+ * @param IL10N $l10n
+ * @param DateTime $dt
+ * @return string
+ */
+ private function getTimeString(IL10N $l10n, DateTime $dt):string {
+ return $l10n->l('time', $dt, ['width' => 'short']);
+ }
+
+ /**
+ * @param VEvent $vevent
+ * @param IL10N $l10n
+ * @return string
+ */
+ private function getTitleFromVEvent(VEvent $vevent, IL10N $l10n):string {
+ if (isset($vevent->SUMMARY)) {
+ return (string)$vevent->SUMMARY;
+ }
+
+ return $l10n->t('Untitled event');
+ }
+}
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php
new file mode 100644
index 00000000000..bfa6db95852
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php
@@ -0,0 +1,39 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2018 Thomas Citharel <tcit@tcit.fr>
+ *
+ * @author Thomas Citharel <tcit@tcit.fr>
+ *
+ * @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\Reminder\NotificationProvider;
+
+class ProviderNotAvailableException extends \Exception {
+
+ /**
+ * ProviderNotAvailableException constructor.
+ *
+ * @since 16.0.0
+ *
+ * @param string $type ReminderType
+ */
+ public function __construct(string $type) {
+ parent::__construct("No notification provider for type $type available");
+ }
+
+}
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php
new file mode 100644
index 00000000000..3872b67e596
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php
@@ -0,0 +1,139 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019, Thomas Citharel
+ * @copyright Copyright (c) 2019, Georg Ehrke
+ *
+ * @author Thomas Citharel <tcit@tcit.fr>
+ * @author Georg Ehrke <oc.list@georgehrke.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\CalDAV\Reminder\NotificationProvider;
+
+use OCA\DAV\AppInfo\Application;
+use OCP\IConfig;
+use OCP\ILogger;
+use OCP\IURLGenerator;
+use OCP\L10N\IFactory as L10NFactory;
+use OCP\Notification\IManager;
+use OCP\IUser;
+use OCP\Notification\INotification;
+use OCP\AppFramework\Utility\ITimeFactory;
+use Sabre\VObject\Component\VEvent;
+use Sabre\VObject\Property;
+
+/**
+ * Class PushProvider
+ *
+ * @package OCA\DAV\CalDAV\Reminder\NotificationProvider
+ */
+class PushProvider extends AbstractProvider {
+
+ /** @var string */
+ public const NOTIFICATION_TYPE = 'DISPLAY';
+
+ /** @var IManager */
+ private $manager;
+
+ /** @var ITimeFactory */
+ private $timeFactory;
+
+ /**
+ * @param IConfig $config
+ * @param IManager $manager
+ * @param ILogger $logger
+ * @param L10NFactory $l10nFactory
+ * @param IUrlGenerator $urlGenerator
+ * @param ITimeFactory $timeFactory
+ */
+ public function __construct(IConfig $config,
+ IManager $manager,
+ ILogger $logger,
+ L10NFactory $l10nFactory,
+ IURLGenerator $urlGenerator,
+ ITimeFactory $timeFactory) {
+ parent::__construct($logger, $l10nFactory, $urlGenerator, $config);
+ $this->manager = $manager;
+ $this->timeFactory = $timeFactory;
+ }
+
+ /**
+ * Send push notification to all users.
+ *
+ * @param VEvent $vevent
+ * @param string $calendarDisplayName
+ * @param IUser[] $users
+ * @throws \Exception
+ */
+ public function send(VEvent $vevent,
+ string $calendarDisplayName=null,
+ array $users=[]):void {
+ $eventDetails = $this->extractEventDetails($vevent);
+ $eventDetails['calendar_displayname'] = $calendarDisplayName;
+
+ foreach($users as $user) {
+ /** @var INotification $notification */
+ $notification = $this->manager->createNotification();
+ $notification->setApp(Application::APP_ID)
+ ->setUser($user->getUID())
+ ->setDateTime($this->timeFactory->getDateTime())
+ ->setObject(Application::APP_ID, (string) $vevent->UID)
+ ->setSubject('calendar_reminder', [
+ 'title' => $eventDetails['title'],
+ 'start_atom' => $eventDetails['start_atom']
+ ])
+ ->setMessage('calendar_reminder', $eventDetails);
+
+ $this->manager->notify($notification);
+ }
+ }
+
+ /**
+ * @var VEvent $vevent
+ * @return array
+ * @throws \Exception
+ */
+ protected function extractEventDetails(VEvent $vevent):array {
+ /** @var Property\ICalendar\DateTime $start */
+ $start = $vevent->DTSTART;
+ $end = $this->getDTEndFromEvent($vevent);
+
+ return [
+ 'title' => isset($vevent->SUMMARY)
+ ? ((string) $vevent->SUMMARY)
+ : null,
+ 'description' => isset($vevent->DESCRIPTION)
+ ? ((string) $vevent->DESCRIPTION)
+ : null,
+ 'location' => isset($vevent->LOCATION)
+ ? ((string) $vevent->LOCATION)
+ : null,
+ 'all_day' => $start instanceof Property\ICalendar\Date,
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ 'start_atom' => $start->getDateTime()->format(\DateTime::ATOM),
+ 'start_is_floating' => $start->isFloating(),
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ 'start_timezone' => $start->getDateTime()->getTimezone()->getName(),
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ 'end_atom' => $end->getDateTime()->format(\DateTime::ATOM),
+ 'end_is_floating' => $end->isFloating(),
+ /** @phan-suppress-next-line PhanUndeclaredClassMethod */
+ 'end_timezone' => $end->getDateTime()->getTimezone()->getName(),
+ ];
+ }
+}