<?php

use KupShop\KupShopBundle\Util\Compat\ServiceContainer;

function ordersOutputBuffer($buffer, $phase)
{
    return iconv('utf-8', getVal('coding', null, 'utf-8').'//TRANSLIT', $buffer);
}

class ExportOrders
{
    /** @var KupShop\OrderingBundle\Util\Order\DeliveryInfo */
    protected $deliveryInfoService;

    protected $orderIds;

    protected function setHeader($params)
    {
        if (!empty($params['dateFrom']) && !empty($params['dateTo'])) {
            $filename = 'objednavky_'.$params['dateFrom'].'-'.$params['dateTo'];
        } else {
            $filename = 'objednavky_'.date('Y-m-d_H-i');
        }
        $filename .= '.'.$params['file_ext'];

        header("Content-type: {$params['content_type']}");
        header("Content-Disposition: attachment; filename=\"{$filename}\"");
    }

    public function setOrderIds($orderIds)
    {
        $this->orderIds = $orderIds;

        return $this;
    }

    public function getOrderIds()
    {
        return $this->orderIds;
    }

    protected function prepdate($date)
    {
        if (empty($date)) {
            return '';
        }

        $date = new DateTime($date);

        return $date->format('Y-m-d');
    }

    public function exportData($params)
    {
        $this->setHeader($params);

        /* @var KupShop\OrderingBundle\Util\Order\DeliveryInfo deliveryInfoService */
        $this->deliveryInfoService = ServiceContainer::getService('KupShop\OrderingBundle\Util\Order\DeliveryInfo');

        $where = 'o.id IN ('.(!empty($this->orderIds) ? join(',', $this->orderIds) : '0').')';

        $orders = sqlQuery("SELECT o.id FROM orders o WHERE {$where}");

        // Select all vats
        $vats = sqlFetchAll(sqlQuery('SELECT vat, 0 tmp FROM vats ORDER BY vat'), ['vat' => 'tmp']);

        // Append non-existent vats from orders
        $vats_order = sqlQuery("SELECT distinct COALESCE(tax, 0) vat, 0 tmp
                FROM orders as o
                LEFT JOIN order_items oi on oi.id_order=o.id
                WHERE {$where}
                ORDER BY vat");

        foreach ($vats_order as $row) {
            if (!isset($vats[$row['vat']])) {
                $vats[$row['vat']] = 0;
            }
        }

        $smarty = createSmarty(true, true);
        $smarty->assign([
            'orders' => $orders,
            'vats' => $vats,
            'this' => $this,
        ]);

        ob_start('ordersOutputBuffer', 4096);

        $template = getVal('format', $params, $params['file_ext']);

        $smarty->display("export/orders_{$template}.tpl");
    }

    public function getOrder($id_order)
    {
        $orderObj = new \Order($id_order);
        $orderObj->createFromDB($id_order);
        $orderObj->fetchItems();
        $orderObj->fetchDates();

        $orderObj->deliveryItemId = $this->deliveryInfoService->getDeliveryItem($orderObj);

        if (is_null($orderObj->date_handle)) {
            $orderObj->date_handle = $orderObj->date_created;
        }

        return $orderObj;
    }
}