friendica/src/Navigation/Notifications/Collection/Notifications.php

<?php
/**
 * @copyright Copyright (C) 2010-2022, the Friendica project
 *
 * @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 <https://www.gnu.org/licenses/>.
 *
 */

namespace Friendica\Navigation\Notifications\Collection;

use Friendica\BaseCollection;
use Friendica\Navigation\Notifications\Entity;

class Notifications extends BaseCollection
{
	/**
	 * @return Entity\Notification
	 */
	public function current(): Entity\Notification
	{
		return parent::current();
	}

	public function setSeen(): Notifications
	{
		return $this->map(function (Entity\Notification $Notification) {
			$Notification->setSeen();
		});
	}

	public function setDismissed(): Notifications
	{
		return $this->map(function (Entity\Notification $Notification) {
			$Notification->setDismissed();
		});
	}

	public function countUnseen(): int
	{
		return array_reduce($this->getArrayCopy(), function (int $carry, Entity\Notification $Notification) {
			return $carry + ($Notification->seen ? 0 : 1);
		}, 0);
	}
}