mirror of https://github.com/nextcloud/calendar
100 lines
3.4 KiB
PHP
100 lines
3.4 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @author 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program 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 as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace OCA\Calendar\Service\Appointments;
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use OC\Calendar\CalendarQuery;
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use OCA\Calendar\Db\AppointmentConfig;
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use OCP\Calendar\IManager;
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use function array_filter;
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use function array_values;
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use function count;
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class DailyLimitFilter {
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/** @var IManager */
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private $calendarManger;
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public function __construct(IManager $calendarManger) {
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$this->calendarManger = $calendarManger;
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}
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/**
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* @param AppointmentConfig $config
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* @param Interval[] $slots
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*
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* @return Interval[]
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*/
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public function filter(AppointmentConfig $config, array $slots): array {
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// 0. If there is no limit then we don't have to filter anything
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if ($config->getDailyMax() === null) {
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return $slots;
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}
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// 1. Find all days
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$days = [];
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foreach ($slots as $slot) {
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$startOfDay = $slot->getStartAsObject()->setTime(0, 0, 0, 0);
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$ts = $startOfDay->getTimestamp();
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$days[$ts] = $startOfDay;
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}
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// 2. Check what days are bookable
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/** @var CalendarQuery $query */
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$query = $this->calendarManger->newQuery($config->getPrincipalUri());
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// Note: the query is not limited to the target calendar so that the user can
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// 1. Move the event to another calendar
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// 2. Update the config to write to another calendar
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// Also, the CalDAV back-end currently only indexes some event properties
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// and our X-* property isn't one of them. Therefore we have to do the
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// filtering in PHP rather than on the DB.
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$available = [];
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foreach ($days as $ts => $day) {
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$nextDay = $day->modify('+1 day');
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$query->setTimerangeStart($day);
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$query->setTimerangeEnd($nextDay);
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$events = $this->calendarManger->searchForPrincipal($query);
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$eventsOfSameAppointment = array_filter($events, function (array $event) use ($config) {
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$isAppointment = ($event['objects'][0]['X-NC-APPOINTMENT'][0][0] ?? null) === $config->getToken();
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$isCancelled = ($event['objects'][0]['STATUS'][0] ?? null) === 'CANCELLED';
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$isFree = ($event['objects'][0]['TRANSP'][0] ?? null) === 'TRANSPARENT';
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return $isAppointment && !$isCancelled && !$isFree;
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});
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// Only days with less than the max number are still available
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$available[$ts] = count($eventsOfSameAppointment) < $config->getDailyMax();
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}
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// 3. Filter out the slots that are on an unavailable day
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return array_values(array_filter($slots, function (Interval $slot) use ($available): bool {
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$startOfDay = $slot->getStartAsObject()->setTime(0, 0, 0, 0);
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$ts = $startOfDay->getTimestamp();
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return $available[$ts];
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}));
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}
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}
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