<?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
 */

use RegularLabs\Library\FieldGroup;

defined('_JEXEC') or die;

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

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

class JFormFieldRL_VirtueMart extends FieldGroup
{
    public $language = null;
    public $type     = 'VirtueMart';

    public function getCategories()
    {
        $query = $this->db->getQuery(true)
            ->select('COUNT(*)')
            ->from('#__virtuemart_categories AS c')
            ->where('c.published > -1');
        $this->db->setQuery($query);
        $total = $this->db->loadResult();

        if ($total > $this->max_list_count)
        {
            return -1;
        }

        $query->clear()
            ->select('c.virtuemart_category_id as id, cc.category_parent_id AS parent_id, l.category_name AS title, c.published')
            ->from('#__virtuemart_categories_' . $this->getActiveLanguage() . ' AS l')
            ->join('', '#__virtuemart_categories AS c using (virtuemart_category_id)')
            ->join('LEFT', '#__virtuemart_category_categories AS cc ON l.virtuemart_category_id = cc.category_child_id')
            ->where('c.published > -1')
            ->group('c.virtuemart_category_id')
            ->order('c.ordering, l.category_name');
        $this->db->setQuery($query);
        $items = $this->db->loadObjectList();

        return $this->getOptionsTreeByList($items);
    }

    public function getProducts()
    {
        $query = $this->db->getQuery(true)
            ->select('COUNT(*)')
            ->from('#__virtuemart_products AS p')
            ->where('p.published > -1');
        $this->db->setQuery($query);
        $total = $this->db->loadResult();

        if ($total > $this->max_list_count)
        {
            return -1;
        }

        $query->clear('select')
            ->select('p.virtuemart_product_id as id, l.product_name AS name, p.product_sku as sku, cl.category_name AS cat, p.published')
            ->join('LEFT', '#__virtuemart_products_' . $this->getActiveLanguage() . ' AS l ON l.virtuemart_product_id = p.virtuemart_product_id')
            ->join('LEFT', '#__virtuemart_product_categories AS x ON x.virtuemart_product_id = p.virtuemart_product_id')
            ->join('LEFT', '#__virtuemart_categories AS c ON c.virtuemart_category_id = x.virtuemart_category_id')
            ->join('LEFT', '#__virtuemart_categories_' . $this->getActiveLanguage() . ' AS cl ON cl.virtuemart_category_id = c.virtuemart_category_id')
            ->group('p.virtuemart_product_id')
            ->order('l.product_name, p.product_sku');
        $this->db->setQuery($query);
        $list = $this->db->loadObjectList();

        return $this->getOptionsByList($list, ['sku', 'cat', 'id']);
    }

    protected function getInput()
    {
        $error = $this->missingFilesOrTables(['categories', 'products']);
        if ($error)
        {
            return $error;
        }

        return $this->getSelectList();
    }

    private function getActiveLanguage()
    {
        if (isset($this->language))
        {
            return $this->language;
        }

        $this->language = 'en_gb';

        if ( ! class_exists('VmConfig'))
        {
            require_once JPATH_ROOT . '/administrator/components/com_virtuemart/helpers/config.php';
        }

        if ( ! class_exists('VmConfig'))
        {
            return $this->language;
        }

        VmConfig::loadConfig();

        if ( ! empty(VmConfig::$vmlang))
        {
            $this->language = str_replace('-', '_', strtolower(VmConfig::$vmlang));

            return $this->language;
        }

        $active_languages = VmConfig::get('active_languages', []);

        if ( ! isset($active_languages[0]))
        {
            return $this->language;
        }

        $this->language = str_replace('-', '_', strtolower($active_languages[0]));

        return $this->language;
    }
}