krafthaus/bauhaus

<?php

namespace KraftHaus\Bauhaus\Export\Format;

/**
 * This file is part of the KraftHaus Bauhaus package.
 *
 * (c) KraftHaus <hello@krafthaus.nl>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Illuminate\Support\Facades\Response;
use KraftHaus\Bauhaus\Export\Format\BaseFormat;
use SimpleXMLElement;

/**
 * Class XmlFormat
 * @package KraftHaus\Bauhaus\Export
 */
class XmlFormat extends BaseFormat
{

    /**
     * Holds the content type.
     * @var string
     */
    protected $contentType = 'text/xml';

    /**
     * Holds the filename.
     * @var string
     */
    protected $filename = 'export.xml';

    /**
     * Create the json response.
     *
     * @access public
     * @return JsonResponse|mixed
     */
    public function export()
    {
        $result = [];
        foreach ($this->getListBuilder()->getResult() as $item) {
            foreach ($item->getFields() as $field) {
                $value = $field->getValue();

                if (!is_string($value)) {
                    $value = $value->toArray();
                }

                $result[$item->getIdentifier()][$field->getName()] = $value;
            }
        }

        $xml = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><response/>');
        $this->arrayToXml($result, $xml);

        return $this->createResponse($xml->asXML());
    }

    /**
     * Create an xml representatation from an array.
     * 
     * @param  array            $result
     * @param  SimpleXMLElement $xml
     *
     * @access public
     * @return void
     */
    protected function arrayToXml($result, &$xml)
    {
        foreach ($result as $key => $value) {
            if (is_array($value)) {
                if (!is_numeric($key)) {
                    $subnode = $xml->addChild((string) $key);
                } else {
                    $subnode = $xml->addChild('item_' . $key);
                }
                $this->arrayToXml($value, $subnode);
            } else {
                $xml->addChild($key, $value);
            }
        }
    }

}