diff options
Diffstat (limited to 'apps/dav/lib/CalDAV/BirthdayService.php')
| -rw-r--r-- | apps/dav/lib/CalDAV/BirthdayService.php | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/apps/dav/lib/CalDAV/BirthdayService.php b/apps/dav/lib/CalDAV/BirthdayService.php new file mode 100644 index 00000000000..b74116f4083 --- /dev/null +++ b/apps/dav/lib/CalDAV/BirthdayService.php @@ -0,0 +1,226 @@ +<?php +/** + * @author Thomas Müller <thomas.mueller@tmit.eu> + * + * @copyright Copyright (c) 2016, ownCloud, Inc. + * @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; + +use Exception; +use OCA\DAV\CardDAV\CardDavBackend; +use OCA\DAV\DAV\GroupPrincipalBackend; +use Sabre\VObject\Component\VCalendar; +use Sabre\VObject\Reader; + +class BirthdayService { + + const BIRTHDAY_CALENDAR_URI = 'contact_birthdays'; + + /** @var GroupPrincipalBackend */ + private $principalBackend; + + /** + * BirthdayService constructor. + * + * @param CalDavBackend $calDavBackEnd + * @param CardDavBackend $cardDavBackEnd + * @param GroupPrincipalBackend $principalBackend + */ + public function __construct($calDavBackEnd, $cardDavBackEnd, $principalBackend) { + $this->calDavBackEnd = $calDavBackEnd; + $this->cardDavBackEnd = $cardDavBackEnd; + $this->principalBackend = $principalBackend; + } + + /** + * @param int $addressBookId + * @param string $cardUri + * @param string $cardData + */ + public function onCardChanged($addressBookId, $cardUri, $cardData) { + + $targetPrincipals = $this->getAllAffectedPrincipals($addressBookId); + + $book = $this->cardDavBackEnd->getAddressBookById($addressBookId); + $targetPrincipals[] = $book['principaluri']; + foreach ($targetPrincipals as $principalUri) { + $calendar = $this->ensureCalendarExists($principalUri); + $objectUri = $book['uri'] . '-' . $cardUri. '.ics'; + $calendarData = $this->buildBirthdayFromContact($cardData); + $existing = $this->calDavBackEnd->getCalendarObject($calendar['id'], $objectUri); + if (is_null($calendarData)) { + if (!is_null($existing)) { + $this->calDavBackEnd->deleteCalendarObject($calendar['id'], $objectUri); + } + } else { + if (is_null($existing)) { + $this->calDavBackEnd->createCalendarObject($calendar['id'], $objectUri, $calendarData->serialize()); + } else { + if ($this->birthdayEvenChanged($existing['calendardata'], $calendarData)) { + $this->calDavBackEnd->updateCalendarObject($calendar['id'], $objectUri, $calendarData->serialize()); + } + } + } + } + } + + /** + * @param int $addressBookId + * @param string $cardUri + */ + public function onCardDeleted($addressBookId, $cardUri) { + $targetPrincipals = $this->getAllAffectedPrincipals($addressBookId); + $book = $this->cardDavBackEnd->getAddressBookById($addressBookId); + $targetPrincipals[] = $book['principaluri']; + foreach ($targetPrincipals as $principalUri) { + $calendar = $this->ensureCalendarExists($principalUri); + $objectUri = $book['uri'] . '-' . $cardUri . '.ics'; + $this->calDavBackEnd->deleteCalendarObject($calendar['id'], $objectUri); + } + } + + /** + * @param string $principal + * @return array|null + * @throws \Sabre\DAV\Exception\BadRequest + */ + public function ensureCalendarExists($principal) { + $book = $this->calDavBackEnd->getCalendarByUri($principal, self::BIRTHDAY_CALENDAR_URI); + if (!is_null($book)) { + return $book; + } + $this->calDavBackEnd->createCalendar($principal, self::BIRTHDAY_CALENDAR_URI, [ + '{DAV:}displayname' => 'Contact birthdays', + '{http://apple.com/ns/ical/}calendar-color' => '#FFFFCA', + ]); + + return $this->calDavBackEnd->getCalendarByUri($principal, self::BIRTHDAY_CALENDAR_URI); + } + + /** + * @param string $cardData + * @return null|VCalendar + */ + public function buildBirthdayFromContact($cardData) { + if (empty($cardData)) { + return null; + } + try { + $doc = Reader::read($cardData); + } catch (Exception $e) { + return null; + } + + if (!isset($doc->BDAY)) { + return null; + } + $birthday = $doc->BDAY; + if (!(string)$birthday) { + return null; + } + $title = str_replace('{name}', + strtr((string)$doc->FN, array('\,' => ',', '\;' => ';')), + '{name}' + ); + try { + $date = new \DateTime($birthday); + } catch (Exception $e) { + return null; + } + $vCal = new VCalendar(); + $vCal->VERSION = '2.0'; + $vEvent = $vCal->createComponent('VEVENT'); + $vEvent->add('DTSTART'); + $vEvent->DTSTART->setDateTime( + $date + ); + $vEvent->DTSTART['VALUE'] = 'DATE'; + $vEvent->add('DTEND'); + $date->add(new \DateInterval('P1D')); + $vEvent->DTEND->setDateTime( + $date + ); + $vEvent->DTEND['VALUE'] = 'DATE'; + $vEvent->{'UID'} = $doc->UID; + $vEvent->{'RRULE'} = 'FREQ=YEARLY'; + $vEvent->{'SUMMARY'} = $title . ' (*' . $date->format('Y') . ')'; + $vEvent->{'TRANSP'} = 'TRANSPARENT'; + $alarm = $vCal->createComponent('VALARM'); + $alarm->add($vCal->createProperty('TRIGGER', '-PT0M', ['VALUE' => 'DURATION'])); + $alarm->add($vCal->createProperty('ACTION', 'DISPLAY')); + $alarm->add($vCal->createProperty('DESCRIPTION', $vEvent->{'SUMMARY'})); + $vEvent->add($alarm); + $vCal->add($vEvent); + return $vCal; + } + + /** + * @param string $user + */ + public function syncUser($user) { + $principal = 'principals/users/'.$user; + $this->ensureCalendarExists($principal); + $books = $this->cardDavBackEnd->getAddressBooksForUser($principal); + foreach($books as $book) { + $cards = $this->cardDavBackEnd->getCards($book['id']); + foreach($cards as $card) { + $this->onCardChanged($book['id'], $card['uri'], $card['carddata']); + } + } + } + + /** + * @param string $existingCalendarData + * @param VCalendar $newCalendarData + * @return bool + */ + public function birthdayEvenChanged($existingCalendarData, $newCalendarData) { + try { + $existingBirthday = Reader::read($existingCalendarData); + } catch (Exception $ex) { + return true; + } + if ($newCalendarData->VEVENT->DTSTART->getValue() !== $existingBirthday->VEVENT->DTSTART->getValue() || + $newCalendarData->VEVENT->SUMMARY->getValue() !== $existingBirthday->VEVENT->SUMMARY->getValue() + ) { + return true; + } + return false; + } + + /** + * @param integer $addressBookId + * @return mixed + */ + protected function getAllAffectedPrincipals($addressBookId) { + $targetPrincipals = []; + $shares = $this->cardDavBackEnd->getShares($addressBookId); + foreach ($shares as $share) { + if ($share['{http://owncloud.org/ns}group-share']) { + $users = $this->principalBackend->getGroupMemberSet($share['{http://owncloud.org/ns}principal']); + foreach ($users as $user) { + $targetPrincipals[] = $user['uri']; + } + } else { + $targetPrincipals[] = $share['{http://owncloud.org/ns}principal']; + } + } + return array_values(array_unique($targetPrincipals, SORT_STRING)); + } + +} |