235 lines
7 KiB
PHP
235 lines
7 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Achim Königs <garfonso@tratschtante.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\DAV\CalDAV;
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use Exception;
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use OCA\DAV\CardDAV\CardDavBackend;
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use OCA\DAV\DAV\GroupPrincipalBackend;
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use Sabre\VObject\Component\VCalendar;
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use Sabre\VObject\Reader;
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class BirthdayService {
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const BIRTHDAY_CALENDAR_URI = 'contact_birthdays';
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/** @var GroupPrincipalBackend */
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private $principalBackend;
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/** @var CalDavBackend */
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private $calDavBackEnd;
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/** @var CardDavBackend */
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private $cardDavBackEnd;
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/**
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* BirthdayService constructor.
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*
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* @param CalDavBackend $calDavBackEnd
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* @param CardDavBackend $cardDavBackEnd
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* @param GroupPrincipalBackend $principalBackend
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*/
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public function __construct(CalDavBackend $calDavBackEnd, CardDavBackend $cardDavBackEnd, GroupPrincipalBackend $principalBackend) {
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$this->calDavBackEnd = $calDavBackEnd;
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$this->cardDavBackEnd = $cardDavBackEnd;
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$this->principalBackend = $principalBackend;
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}
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/**
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* @param int $addressBookId
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* @param string $cardUri
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* @param string $cardData
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*/
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public function onCardChanged($addressBookId, $cardUri, $cardData) {
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$targetPrincipals = $this->getAllAffectedPrincipals($addressBookId);
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$book = $this->cardDavBackEnd->getAddressBookById($addressBookId);
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$targetPrincipals[] = $book['principaluri'];
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foreach ($targetPrincipals as $principalUri) {
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$calendar = $this->ensureCalendarExists($principalUri);
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$objectUri = $book['uri'] . '-' . $cardUri. '.ics';
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$calendarData = $this->buildBirthdayFromContact($cardData);
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$existing = $this->calDavBackEnd->getCalendarObject($calendar['id'], $objectUri);
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if (is_null($calendarData)) {
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if (!is_null($existing)) {
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$this->calDavBackEnd->deleteCalendarObject($calendar['id'], $objectUri);
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}
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} else {
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if (is_null($existing)) {
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$this->calDavBackEnd->createCalendarObject($calendar['id'], $objectUri, $calendarData->serialize());
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} else {
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if ($this->birthdayEvenChanged($existing['calendardata'], $calendarData)) {
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$this->calDavBackEnd->updateCalendarObject($calendar['id'], $objectUri, $calendarData->serialize());
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}
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}
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}
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}
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}
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/**
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* @param int $addressBookId
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* @param string $cardUri
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*/
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public function onCardDeleted($addressBookId, $cardUri) {
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$targetPrincipals = $this->getAllAffectedPrincipals($addressBookId);
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$book = $this->cardDavBackEnd->getAddressBookById($addressBookId);
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$targetPrincipals[] = $book['principaluri'];
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foreach ($targetPrincipals as $principalUri) {
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$calendar = $this->ensureCalendarExists($principalUri);
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$objectUri = $book['uri'] . '-' . $cardUri . '.ics';
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$this->calDavBackEnd->deleteCalendarObject($calendar['id'], $objectUri);
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}
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}
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/**
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* @param string $principal
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* @return array|null
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* @throws \Sabre\DAV\Exception\BadRequest
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*/
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public function ensureCalendarExists($principal) {
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$book = $this->calDavBackEnd->getCalendarByUri($principal, self::BIRTHDAY_CALENDAR_URI);
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if (!is_null($book)) {
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return $book;
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}
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$this->calDavBackEnd->createCalendar($principal, self::BIRTHDAY_CALENDAR_URI, [
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'{DAV:}displayname' => 'Contact birthdays',
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'{http://apple.com/ns/ical/}calendar-color' => '#FFFFCA',
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]);
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return $this->calDavBackEnd->getCalendarByUri($principal, self::BIRTHDAY_CALENDAR_URI);
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}
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/**
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* @param string $cardData
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* @return null|VCalendar
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*/
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public function buildBirthdayFromContact($cardData) {
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if (empty($cardData)) {
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return null;
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}
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try {
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$doc = Reader::read($cardData);
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} catch (Exception $e) {
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return null;
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}
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if (!isset($doc->BDAY)) {
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return null;
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}
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$birthday = $doc->BDAY;
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if (!(string)$birthday) {
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return null;
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}
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$title = str_replace('{name}',
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strtr((string)$doc->FN, array('\,' => ',', '\;' => ';')),
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'{name}'
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);
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try {
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$date = new \DateTime($birthday);
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} catch (Exception $e) {
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return null;
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}
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$vCal = new VCalendar();
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$vCal->VERSION = '2.0';
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$vEvent = $vCal->createComponent('VEVENT');
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$vEvent->add('DTSTART');
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$vEvent->DTSTART->setDateTime(
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$date
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);
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$vEvent->DTSTART['VALUE'] = 'DATE';
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$vEvent->add('DTEND');
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$date->add(new \DateInterval('P1D'));
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$vEvent->DTEND->setDateTime(
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$date
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);
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$vEvent->DTEND['VALUE'] = 'DATE';
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$vEvent->{'UID'} = $doc->UID;
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$vEvent->{'RRULE'} = 'FREQ=YEARLY';
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$vEvent->{'SUMMARY'} = $title . ' (*' . $date->format('Y') . ')';
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$vEvent->{'TRANSP'} = 'TRANSPARENT';
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$alarm = $vCal->createComponent('VALARM');
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$alarm->add($vCal->createProperty('TRIGGER', '-PT0M', ['VALUE' => 'DURATION']));
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$alarm->add($vCal->createProperty('ACTION', 'DISPLAY'));
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$alarm->add($vCal->createProperty('DESCRIPTION', $vEvent->{'SUMMARY'}));
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$vEvent->add($alarm);
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$vCal->add($vEvent);
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return $vCal;
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}
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/**
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* @param string $user
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*/
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public function syncUser($user) {
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$principal = 'principals/users/'.$user;
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$this->ensureCalendarExists($principal);
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$books = $this->cardDavBackEnd->getAddressBooksForUser($principal);
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foreach($books as $book) {
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$cards = $this->cardDavBackEnd->getCards($book['id']);
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foreach($cards as $card) {
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$this->onCardChanged($book['id'], $card['uri'], $card['carddata']);
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}
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}
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}
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/**
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* @param string $existingCalendarData
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* @param VCalendar $newCalendarData
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* @return bool
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*/
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public function birthdayEvenChanged($existingCalendarData, $newCalendarData) {
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try {
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$existingBirthday = Reader::read($existingCalendarData);
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} catch (Exception $ex) {
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return true;
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}
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if ($newCalendarData->VEVENT->DTSTART->getValue() !== $existingBirthday->VEVENT->DTSTART->getValue() ||
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$newCalendarData->VEVENT->SUMMARY->getValue() !== $existingBirthday->VEVENT->SUMMARY->getValue()
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) {
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return true;
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}
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return false;
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}
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/**
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* @param integer $addressBookId
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* @return mixed
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*/
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protected function getAllAffectedPrincipals($addressBookId) {
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$targetPrincipals = [];
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$shares = $this->cardDavBackEnd->getShares($addressBookId);
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foreach ($shares as $share) {
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if ($share['{http://owncloud.org/ns}group-share']) {
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$users = $this->principalBackend->getGroupMemberSet($share['{http://owncloud.org/ns}principal']);
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foreach ($users as $user) {
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$targetPrincipals[] = $user['uri'];
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}
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} else {
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$targetPrincipals[] = $share['{http://owncloud.org/ns}principal'];
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}
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}
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return array_values(array_unique($targetPrincipals, SORT_STRING));
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}
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}
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