Sibyx/phpGPX

<?php
/**
 * Created            16/02/2017 22:45
 * @author            Jakub Dubec <jakub.dubec@gmail.com>
 */

namespace phpGPX\Parsers;

use phpGPX\Models\Copyright;

/**
 * Class CopyrightParser
 * @package phpGPX\Parsers
 */
abstract class CopyrightParser
{
    public static $tagName = 'copyright';

    /**
     * @param \SimpleXMLElement $node
     * @return Copyright|null
     */
    public static function parse(\SimpleXMLElement $node)
    {
        if ($node->getName() != self::$tagName) {
            return null;
        }

        $copyright = new Copyright();

        $copyright->author = isset($node['author']) ? (string) $node['author'] : null;
        $copyright->year = isset($node->year) ? (string) $node->year : null;
        $copyright->license = isset($node->license) ? (string) $node->license : null;

        return $copyright;
    }

    /**
     * @param Copyright $copyright
     * @param \DOMDocument $document
     * @return \DOMElement
     */
    public static function toXML(Copyright $copyright, \DOMDocument &$document)
    {
        $node = $document->createElement(self::$tagName);

        $node->setAttribute('author', $copyright->author);

        if (!empty($copyright->year)) {
            $child = $document->createElement('year', $copyright->year);
            $node->appendChild($child);
        }

        if (!empty($copyright->license)) {
            $child = $document->createElement('license', $copyright->license);
            $node->appendChild($child);
        }

        return $node;
    }
}