<?php
/**
 * @copyright Copyright (c) 2016 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\DAV\CalDAV;

use OCP\Activity\IExtension;
use OCP\IURLGenerator;
use OCP\L10N\IFactory;

class Activity implements IExtension {
	const APP = 'dav';
	/**
	 * Filter with all sharing related activities
	 */
	const CALENDAR = 'calendar';

	/**
	 * Activity types known to this extension
	 */
	const SUBJECT_ADD = 'calendar_add';
	const SUBJECT_UPDATE = 'calendar_update';
	const SUBJECT_DELETE = 'calendar_delete';
	const SUBJECT_UNSHARE_USER = 'calendar_user_unshare';
	const SUBJECT_UNSHARE_GROUP = 'calendar_group_unshare';

	/**
	 * Subject keys for translation of the subjections
	 */

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

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

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

	protected function getL10N($languageCode = null) {
		return $this->languageFactory->get(self::APP, $languageCode);
	}

	/**
	 * The extension can return an array of additional notification types.
	 * If no additional types are to be added false is to be returned
	 *
	 * @param string $languageCode
	 * @return array|false
	 */
	public function getNotificationTypes($languageCode) {
		$l = $this->getL10N($languageCode);

		return array(
			self::CALENDAR => (string) $l->t('A <strong>calendar</strong> was modified'),
		);
	}

	/**
	 * For a given method additional types to be displayed in the settings can be returned.
	 * In case no additional types are to be added false is to be returned.
	 *
	 * @param string $method
	 * @return array|false
	 */
	public function getDefaultTypes($method) {
		$defaultTypes = [];
		if ($method === self::METHOD_STREAM) {
			$defaultTypes[] = self::CALENDAR;
		}

		return $defaultTypes;
	}

	/**
	 * A string naming the css class for the icon to be used can be returned.
	 * If no icon is known for the given type false is to be returned.
	 *
	 * @param string $type
	 * @return string|false
	 */
	public function getTypeIcon($type) {
		switch ($type) {
			case self::CALENDAR:
				return 'icon-calendar-dark';
		}

		return false;
	}

	/**
	 * The extension can translate a given message to the requested languages.
	 * If no translation is available false is to be returned.
	 *
	 * @param string $app
	 * @param string $text
	 * @param array $params
	 * @param boolean $stripPath
	 * @param boolean $highlightParams
	 * @param string $languageCode
	 * @return string|false
	 */
	public function translate($app, $text, $params, $stripPath, $highlightParams, $languageCode) {
		if ($app !== self::APP) {
			return false;
		}

		$l = $this->getL10N($languageCode);

		switch ($text) {
			case self::SUBJECT_ADD:
				return (string) $l->t('%1$s created calendar %2$s', $params);
			case self::SUBJECT_ADD . '_self':
				return (string) $l->t('You created calendar %2$s', $params);
			case self::SUBJECT_DELETE:
				return (string) $l->t('%1$s deleted calendar %2$s', $params);
			case self::SUBJECT_DELETE . '_self':
				return (string) $l->t('You deleted calendar %2$s', $params);
			case self::SUBJECT_UPDATE:
				return (string) $l->t('%1$s updated calendar %2$s', $params);
			case self::SUBJECT_UPDATE . '_self':
				return (string) $l->t('You updated calendar %2$s', $params);
			case self::SUBJECT_UNSHARE_USER:
				return (string) $l->t('%1$s unshared calendar %2$s from you', $params);
			case self::SUBJECT_UNSHARE_USER . '_you':
				return (string) $l->t('You unshared calendar %2$s from %1$s', $params);
			case self::SUBJECT_UNSHARE_USER . '_by':
				return (string) $l->t('%1$s unshared calendar %2$s from themselves', $params);
			case self::SUBJECT_UNSHARE_GROUP . '_you':
				return (string) $l->t('You unshared calendar %2$s from group %1$s', $params);
		}

		return false;
	}

	/**
	 * The extension can define the type of parameters for translation
	 *
	 * Currently known types are:
	 * * file		=> will strip away the path of the file and add a tooltip with it
	 * * username	=> will add the avatar of the user
	 *
	 * @param string $app
	 * @param string $text
	 * @return array|false
	 */
	public function getSpecialParameterList($app, $text) {
		if ($app === self::APP) {
			switch ($text) {
				case self::SUBJECT_ADD:
				case self::SUBJECT_ADD . '_self':
				case self::SUBJECT_DELETE:
				case self::SUBJECT_DELETE . '_self':
				case self::SUBJECT_UPDATE:
				case self::SUBJECT_UPDATE . '_self':
				case self::SUBJECT_UNSHARE_USER:
				case self::SUBJECT_UNSHARE_USER . '_you':
				case self::SUBJECT_UNSHARE_USER . '_by':
					return [
						0 => 'username',
						//1 => 'calendar',
					];
				case self::SUBJECT_UNSHARE_GROUP . '_you':
					return [
						//0 => 'group',
						//1 => 'calendar',
					];
			}
		}

		return false;
	}

	/**
	 * The extension can define the parameter grouping by returning the index as integer.
	 * In case no grouping is required false is to be returned.
	 *
	 * @param array $activity
	 * @return integer|false
	 */
	public function getGroupParameter($activity) {
		return false;
	}

	/**
	 * The extension can define additional navigation entries. The array returned has to contain two keys 'top'
	 * and 'apps' which hold arrays with the relevant entries.
	 * If no further entries are to be added false is no be returned.
	 *
	 * @return array|false
	 */
	public function getNavigation() {
		$l = $this->getL10N();
		return [
			'apps' => [
				self::CALENDAR => [
					'id' => self::CALENDAR,
					'icon' => 'icon-calendar-dark',
					'name' => (string) $l->t('Calendar'),
					'url' => $this->URLGenerator->linkToRoute('activity.Activities.showList', ['filter' => self::CALENDAR]),
				],
			],
			'top' => [],
		];
	}

	/**
	 * The extension can check if a custom filter (given by a query string like filter=abc) is valid or not.
	 *
	 * @param string $filterValue
	 * @return boolean
	 */
	public function isFilterValid($filterValue) {
		return $filterValue === self::CALENDAR;
	}

	/**
	 * The extension can filter the types based on the filter if required.
	 * In case no filter is to be applied false is to be returned unchanged.
	 *
	 * @param array $types
	 * @param string $filter
	 * @return array|false
	 */
	public function filterNotificationTypes($types, $filter) {
		switch ($filter) {
			case self::CALENDAR:
				return array_intersect([self::CALENDAR], $types);
		}
		return false;
	}

	/**
	 * For a given filter the extension can specify the sql query conditions including parameters for that query.
	 * In case the extension does not know the filter false is to be returned.
	 * The query condition and the parameters are to be returned as array with two elements.
	 * E.g. return array('`app` = ? and `message` like ?', array('mail', 'ownCloud%'));
	 *
	 * @param string $filter
	 * @return array|false
	 */
	public function getQueryForFilter($filter) {
		return false;
	}

}