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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2019 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Console;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Factory;
use Joomla\Console\Command\AbstractCommand;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;

/**
 * Console command to list existing users
 *
 * @since  4.0.0
 */
class ListUserCommand extends AbstractCommand
{
	/**
	 * The default command name
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected static $defaultName = 'user:list';

	/**
	 * SymfonyStyle Object
	 * @var object
	 * @since 4.0.0
	 */
	private $ioStyle;

	/**
	 * Internal function to execute the command.
	 *
	 * @param   InputInterface   $input   The input to inject into the command.
	 * @param   OutputInterface  $output  The output to inject into the command.
	 *
	 * @return  integer  The command exit code
	 *
	 * @since   4.0.0
	 */
	protected function doExecute(InputInterface $input, OutputInterface $output): int
	{
		$db = Factory::getDbo();

		$this->configureIO($input, $output);
		$this->ioStyle->title('List users');

		$groupsQuery = $db->getQuery(true)
			->select($db->quoteName(['title', 'id']))
			->from($db->quoteName('#__usergroups'));

		$groups = $db->setQuery($groupsQuery)->loadAssocList('id', 'title');

		$query = $db->getQuery(true);
		$query->select($db->quoteName(['u.id', 'u.username', 'u.name', 'u.email', 'u.block']))
			->select($query->groupConcat($query->castAs('CHAR', $db->quoteName('g.group_id'))) . ' AS ' . $db->quoteName('groups'))
			->innerJoin($db->quoteName('#__user_usergroup_map', 'g'), $db->quoteName('g.user_id') . ' = ' . $db->quoteName('u.id'))
			->from($db->quoteName('#__users', 'u'))
			->group($db->quoteName('u.id'));
		$db->setQuery($query);

		$users = [];

		foreach ($db->loadAssocList() as $user)
		{
			$user["groups"] = array_map(
				function ($groupId) use ($groups) {
					return $groups[$groupId];
				},
				explode(",", $user["groups"])
			);

			$user["groups"] = implode(", ", $user["groups"]);
			$users[] = $user;
		}

		$this->ioStyle->table(['id', 'username', 'name', 'email', 'blocked', 'groups'], $users);

		return Command::SUCCESS;
	}

	/**
	 * Configure the IO.
	 *
	 * @param   InputInterface   $input   The input to inject into the command.
	 * @param   OutputInterface  $output  The output to inject into the command.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	private function configureIO(InputInterface $input, OutputInterface $output)
	{
		$this->ioStyle = new SymfonyStyle($input, $output);
	}

	/**
	 * Configure the command.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	protected function configure(): void
	{
		$help = "<info>%command.name%</info> will list all users
		\nUsage: <info>php %command.full_name%</info>";

		$this->setDescription('List all users');
		$this->setHelp($help);
	}
}