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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2011 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\HTML\Helpers;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Access\Access;
use Joomla\CMS\Factory;
use Joomla\CMS\Helper\UserGroupsHelper;
use Joomla\CMS\HTML\HTMLHelper;

/**
 * Utility class working with users
 *
 * @since  2.5
 */
abstract class User
{
	/**
	 * Displays a list of user groups.
	 *
	 * @param   boolean  $includeSuperAdmin  true to include super admin groups, false to exclude them
	 *
	 * @return  array  An array containing a list of user groups.
	 *
	 * @since   2.5
	 */
	public static function groups($includeSuperAdmin = false)
	{
		$options = array_values(UserGroupsHelper::getInstance()->getAll());

		for ($i = 0, $n = count($options); $i < $n; $i++)
		{
			$options[$i]->value = $options[$i]->id;
			$options[$i]->text = str_repeat('- ', $options[$i]->level) . $options[$i]->title;
			$groups[] = HTMLHelper::_('select.option', $options[$i]->value, $options[$i]->text);
		}

		// Exclude super admin groups if requested
		if (!$includeSuperAdmin)
		{
			$filteredGroups = array();

			foreach ($groups as $group)
			{
				if (!Access::checkGroup($group->value, 'core.admin'))
				{
					$filteredGroups[] = $group;
				}
			}

			$groups = $filteredGroups;
		}

		return $groups;
	}

	/**
	 * Get a list of users.
	 *
	 * @return  string
	 *
	 * @since   2.5
	 */
	public static function userlist()
	{
		$db    = Factory::getDbo();
		$query = $db->getQuery(true)
			->select(
				[
					$db->quoteName('a.id', 'value'),
					$db->quoteName('a.name', 'text'),
				]
			)
			->from($db->quoteName('#__users', 'a'))
			->where($db->quoteName('a.block') . ' = 0')
			->order($db->quoteName('a.name'));
		$db->setQuery($query);

		return $db->loadObjectList();
	}
}