<?php
/**
 * @copyright Copyright (c) 2017 Joas Schilling <coding@schilljs.com>
 *
 * @author Joas Schilling <coding@schilljs.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\Notifications\Notifier;

use OCP\IURLGenerator;
use OCP\L10N\IFactory;
use OCP\Notification\AlreadyProcessedException;
use OCP\Notification\INotification;
use OCP\Notification\INotifier;

class AdminNotifications implements INotifier {

	/** @var IFactory */
	protected $l10nFactory;

	/** @var IURLGenerator */
	protected $urlGenerator;

	/**
	 * @param IFactory $l10nFactory
	 * @param IURLGenerator $urlGenerator
	 */
	public function __construct(IFactory $l10nFactory, IURLGenerator $urlGenerator) {
		$this->l10nFactory = $l10nFactory;
		$this->urlGenerator = $urlGenerator;
	}

	/**
	 * Identifier of the notifier, only use [a-z0-9_]
	 *
	 * @return string
	 * @since 17.0.0
	 */
	public function getID(): string {
		return 'admin_notifications';
	}

	/**
	 * Human readable name describing the notifier
	 *
	 * @return string
	 * @since 17.0.0
	 */
	public function getName(): string {
		return $this->l10nFactory->get('notifications')->t('Admin notifications');
	}

	/**
	 * @param INotification $notification
	 * @param string $languageCode The code of the language that should be used to prepare the notification
	 * @return INotification
	 * @throws \InvalidArgumentException When the notification was not prepared by a notifier
	 * @throws AlreadyProcessedException When the notification is not needed anymore and should be deleted
	 */
	public function prepare(INotification $notification, string $languageCode): INotification {
		if ($notification->getApp() !== 'admin_notifications' && $notification->getApp() !== 'admin_notification_talk') {
			throw new \InvalidArgumentException('Unknown app');
		}

		switch ($notification->getSubject()) {
			// Deal with known subjects
			case 'cli':
			case 'ocs':
				$subjectParams = $notification->getSubjectParameters();
				$notification->setParsedSubject($subjectParams[0]);
				$messageParams = $notification->getMessageParameters();
				if (isset($messageParams[0]) && $messageParams[0] !== '') {
					$notification->setParsedMessage($messageParams[0]);
				}

				$notification->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('notifications', 'notifications-dark.svg')));
				return $notification;

			default:
				throw new \InvalidArgumentException('Unknown subject');
		}
	}
}