<?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 RegularLabs\Library\DB as RL_DB;
use RegularLabs\Library\FieldGroup;

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

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

class JFormFieldRL_RedShop extends FieldGroup
{
    public $type = 'RedShop';

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

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

        $this->db->setQuery($this->getCategoriesQuery());
        $items = $this->db->loadObjectList();

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

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

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

        $this->db->setQuery($this->getProductsQuery());
        $list = $this->db->loadObjectList();

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

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

        return $this->getSelectList();
    }

    private function getCategoriesQuery()
    {
        $query = $this->db->getQuery(true)
            ->select('c.id, c.parent_id, c.name AS title, c.published')
            ->from('#__redshop_category AS c')
            ->where('c.published > -1');

        if (RL_DB::tableExists('redshop_category_xref'))
        {
            $query->clear('select')
                ->select('c.category_id as id, x.category_parent_id AS parent_id, c.category_name AS title, c.published')
                ->join('LEFT', '#__redshop_category_xref AS x ON x.category_child_id = c.category_id')
                ->group('c.category_id')
                ->order('c.ordering, c.category_name');

            return $query;
        }

        $query
            ->group('c.id')
            ->order('c.ordering, c.name');

        return $query;
    }

    private function getProductsQuery()
    {
        $query = $this->db->getQuery(true)
            ->select('p.product_id as id, p.product_name AS name, p.product_number as number, c.name AS cat, p.published')
            ->from('#__redshop_product AS p')
            ->where('p.published > -1')
            ->join('LEFT', '#__redshop_product_category_xref AS x ON x.product_id = p.product_id')
            ->group('p.product_id')
            ->order('p.product_name, p.product_number');

        if (RL_DB::tableExists('redshop_category_xref'))
        {
            $query->clear('select')
                ->select('p.product_id as id, p.product_name AS name, p.product_number as number, c.category_name AS cat, p.published')
                ->join('LEFT', '#__redshop_category AS c ON c.category_id = x.category_id');

            return $query;
        }

        $query
            ->join('LEFT', '#__redshop_category AS c ON c.id = x.category_id');

        return $query;
    }
}