Sibyx/phpGPX

<?php
/**
 * Created            15/02/2017 18:44
 * @author            Jakub Dubec <jakub.dubec@gmail.com>
 */

namespace phpGPX\Parsers;

use phpGPX\Models\Link;

abstract class LinkParser
{
    private static $tagName = 'link';

    /**
     * @param \SimpleXMLElement[] $nodes
     * @return Link[]
     */
    public static function parse($nodes = [])
    {
        $links = [];
        foreach ($nodes as $node) {
            $link = new Link();
            $link->href = isset($node['href']) ? (string) $node['href'] : null;
            $link->text = isset($node->text) ? (string) $node->text : null;
            $link->type = isset($node->type) ? (string) $node->type : null;

            $links[] = $link;
        }
        return $links;
    }

    /**
     * @param Link[] $links
     * @param \DOMDocument $document
     * @return \DOMElement[]
     */
    public static function toXMLArray(array $links, \DOMDocument &$document)
    {
        $result = [];

        foreach ($links as $link) {
            $result[] = self::toXML($link, $document);
        }

        return $result;
    }

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

        $node->setAttribute('href', $link->href);

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

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

        return $node;
    }
}