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<?php
/**
 * @package         Regular Labs Library
 * @version         23.9.3039
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            https://regularlabs.com
 * @copyright       Copyright © 2023 Regular Labs All Rights Reserved
 * @license         GNU General Public License version 2 or later
 */

/* @DEPRECATED */

defined('_JEXEC') or die;

use Joomla\CMS\Factory as JFactory;

if (is_file(JPATH_LIBRARIES . '/regularlabs/autoload.php'))
{
    require_once JPATH_LIBRARIES . '/regularlabs/autoload.php';
}

require_once dirname(__FILE__, 2) . '/assignment.php';

class RLAssignmentsUsers extends RLAssignment
{
    public function passAccessLevels()
    {
        $user = JFactory::getApplication()->getIdentity() ?: JFactory::getUser();

        $levels = $user->getAuthorisedViewLevels();

        $this->selection = $this->convertAccessLevelNamesToIds($this->selection);

        return $this->passSimple($levels);
    }

    public function passUserGroupLevels()
    {
        $user = JFactory::getApplication()->getIdentity() ?: JFactory::getUser();

        if ( ! empty($user->groups))
        {
            $groups = array_values($user->groups);
        }
        else
        {
            $groups = $user->getAuthorisedGroups();
        }

        if ($this->params->inc_children)
        {
            $this->setUserGroupChildrenIds();
        }

        $this->selection = $this->convertUsergroupNamesToIds($this->selection);

        return $this->passSimple($groups);
    }

    public function passUsers()
    {
        $user = JFactory::getApplication()->getIdentity() ?: JFactory::getUser();

        return $this->passSimple($user->get('id'));
    }

    private function convertAccessLevelNamesToIds($selection)
    {
        $names = [];

        foreach ($selection as $i => $level)
        {
            if (is_numeric($level))
            {
                continue;
            }

            unset($selection[$i]);

            $names[] = strtolower(str_replace(' ', '', $level));
        }

        $db = JFactory::getDbo();

        $query = $db->getQuery(true)
            ->select($db->quoteName('id'))
            ->from('#__viewlevels')
            ->where('LOWER(REPLACE(' . $db->quoteName('title') . ', " ", "")) IN (\'' . implode('\',\'', $names) . '\')');
        $db->setQuery($query);

        $level_ids = $db->loadColumn();

        return array_unique(array_merge($selection, $level_ids));
    }

    private function convertUsergroupNamesToIds($selection)
    {
        $names = [];

        foreach ($selection as $i => $group)
        {
            if (is_numeric($group))
            {
                continue;
            }

            unset($selection[$i]);

            $names[] = strtolower(str_replace(' ', '', $group));
        }

        $db = JFactory::getDbo();

        $query = $db->getQuery(true)
            ->select($db->quoteName('id'))
            ->from('#__usergroups')
            ->where('LOWER(REPLACE(' . $db->quoteName('title') . ', " ", "")) IN (\'' . implode('\',\'', $names) . '\')');
        $db->setQuery($query);

        $group_ids = $db->loadColumn();

        return array_unique(array_merge($selection, $group_ids));
    }

    private function getUserGroupChildrenIds($groups)
    {
        $children = [];

        $db = JFactory::getDbo();

        foreach ($groups as $group)
        {
            $query = $db->getQuery(true)
                ->select($db->quoteName('id'))
                ->from($db->quoteName('#__usergroups'))
                ->where($db->quoteName('parent_id') . ' = ' . (int) $group);
            $db->setQuery($query);

            $group_children = $db->loadColumn();

            if (empty($group_children))
            {
                continue;
            }

            $children = array_merge($children, $group_children);

            $group_grand_children = $this->getUserGroupChildrenIds($group_children);

            if (empty($group_grand_children))
            {
                continue;
            }

            $children = array_merge($children, $group_grand_children);
        }

        $children = array_unique($children);

        return $children;
    }

    private function setUserGroupChildrenIds()
    {
        $children = $this->getUserGroupChildrenIds($this->selection);

        if ($this->params->inc_children == 2)
        {
            $this->selection = $children;

            return;
        }

        $this->selection = array_merge($this->selection, $children);
    }
}