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<?php
/**
 * @package         Regular Labs Library
 * @version         23.8.26299
 * 
 * @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
 */

defined('_JEXEC') or die;

use Joomla\CMS\HTML\HTMLHelper as JHtml;
use Joomla\CMS\Language\Text as JText;
use Joomla\Registry\Registry;
use RegularLabs\Library\Field;

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

require_once JPATH_LIBRARIES . '/regularlabs/autoload.php';

class JFormFieldRL_Tags extends Field
{
    public $type = 'Tags';

    public function getAjaxRaw(Registry $attributes)
    {
        $name   = $attributes->get('name', $this->type);
        $id     = $attributes->get('id', strtolower($name));
        $value  = $attributes->get('value', []);
        $size   = $attributes->get('size');
        $simple = $attributes->get('simple');

        $options = $this->getOptions(
            (bool) $attributes->get('show_all'),
            (bool) $attributes->get('use_names')
        );

        return $this->selectList($options, $name, $value, $id, $size, true, $simple);
    }

    protected function getInput()
    {
        $size        = (int) $this->get('size');
        $simple      = (int) $this->get('simple');
        $show_ignore = $this->get('show_ignore');
        $use_names   = $this->get('use_names');

        if ($show_ignore && in_array('-1', $this->value))
        {
            $this->value = ['-1'];
        }

        return $this->selectListAjax(
            $this->type, $this->name, $this->value, $this->id,
            compact('size', 'simple', 'show_ignore', 'use_names'),
            $simple
        );
    }

    protected function getOptions($show_ignore = false, $use_names = false, $value = [])
    {
        // assemble items to the array
        $options = [];

        if ($show_ignore)
        {
            $options[] = JHtml::_('select.option', '-1', '- ' . JText::_('RL_IGNORE') . ' -');
            $options[] = JHtml::_('select.option', '-', '&nbsp;', 'value', 'text', true);
        }

        $options = array_merge($options, $this->getTags($use_names));

        return $options;
    }

    protected function getTags($use_names)
    {
        $value = $use_names ? 'a.title' : 'a.id';

        $query = $this->db->getQuery(true)
            ->select($value . ' as value, a.title as text, a.parent_id AS parent')
            ->from('#__tags AS a')
            ->select('COUNT(DISTINCT b.id) - 1 AS level')
            ->join('LEFT', '#__tags AS b ON a.lft > b.lft AND a.rgt < b.rgt')
            ->where('a.alias <> ' . $this->db->quote('root'))
            ->where('a.published IN (0,1)')
            ->group('a.id')
            ->order('a.lft ASC');
        $this->db->setQuery($query);

        return $this->db->loadObjectList();
    }
}