<?php
/**
 * @package         Regular Labs Library
 * @version         23.5.7450
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            http://regularlabs.com
 * @copyright       Copyright © 2023 Regular Labs All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory as JFactory;
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_Templates extends Field
{
    public $type = 'Templates';

    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');
        $multiple = $attributes->get('multiple');

        $options = $this->getOptions();

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

    protected function getInput()
    {
        // fix old '::' separator and change it to '--'
        $value = json_encode($this->value);
        $value = str_replace('::', '--', $value);
        $value = (array) json_decode($value, true);

        $size     = (int) $this->get('size');
        $multiple = $this->get('multiple');

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

    protected function getOptions()
    {
        $options = [];

        $templates = $this->getTemplates();

        foreach ($templates as $styles)
        {
            $level = 0;
            foreach ($styles as $style)
            {
                $style->level = $level;
                $options[]    = $style;

                if (count($styles) <= 2)
                {
                    break;
                }

                $level = 1;
            }
        }

        return $options;
    }

    protected function getTemplates()
    {
        $groups = [];
        $lang   = JFactory::getLanguage();

        // Get the database object and a new query object.
        $db    = JFactory::getDbo();
        $query = $db->getQuery(true)
            ->select('s.id, s.title, e.name as name, s.template')
            ->from('#__template_styles as s')
            ->where('s.client_id = 0')
            ->join('LEFT', '#__extensions as e on e.element=s.template')
            ->where('e.enabled=1')
            ->where($db->quoteName('e.type') . '=' . $db->quote('template'))
            ->order('s.template')
            ->order('s.title');

        // Set the query and load the styles.
        $db->setQuery($query);
        $styles = $db->loadObjectList();

        // Build the grouped list array.
        if ($styles)
        {
            foreach ($styles as $style)
            {
                $template = $style->template;
                $lang->load('tpl_' . $template . '.sys', JPATH_SITE)
                || $lang->load('tpl_' . $template . '.sys', JPATH_SITE . '/templates/' . $template);
                $name = JText::_($style->name);

                // Initialize the group if necessary.
                if ( ! isset($groups[$template]))
                {
                    $groups[$template]   = [];
                    $groups[$template][] = JHtml::_('select.option', $template, $name);
                }

                $groups[$template][] = JHtml::_('select.option', $template . '--' . $style->id, $style->title);
            }
        }

        return $groups;
    }
}