<?php
/**
 * @copyright Copyright (c) 2016 Robin Appelman <robin@icewind.nl>
 *
 * @author Robin Appelman <robin@icewind.nl>
 *
 * @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 OC\Core\Command\Group;

use OC\Core\Command\Base;
use OCP\IGroup;
use OCP\IGroupManager;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

class ListCommand extends Base {
	/** @var IGroupManager */
	protected $groupManager;

	/**
	 * @param IGroupManager $groupManager
	 */
	public function __construct(IGroupManager $groupManager) {
		$this->groupManager = $groupManager;
		parent::__construct();
	}

	protected function configure() {
		$this
			->setName('group:list')
			->setDescription('list configured groups')
			->addOption(
				'limit',
				'l',
				InputOption::VALUE_OPTIONAL,
				'Number of groups to retrieve',
				500
			)->addOption(
				'offset',
				'o',
				InputOption::VALUE_OPTIONAL,
				'Offset for retrieving groups',
				0
			)->addOption(
				'output',
				null,
				InputOption::VALUE_OPTIONAL,
				'Output format (plain, json or json_pretty, default is plain)',
				$this->defaultOutputFormat
			);
	}

	protected function execute(InputInterface $input, OutputInterface $output) {
		$groups = $this->groupManager->search('', (int)$input->getOption('limit'), (int)$input->getOption('offset'));
		$this->writeArrayInOutputFormat($input, $output, $this->formatGroups($groups));
	}

	/**
	 * @param IGroup[] $groups
	 * @return array
	 */
	private function formatGroups(array $groups) {
		$keys = array_map(function (IGroup $group) {
			return $group->getGID();
		}, $groups);
		$values = array_map(function (IGroup $group) {
			return array_keys($group->getUsers());
		}, $groups);
		return array_combine($keys, $values);
	}
}