Sibyx/phpGPX

<?php
/**
 * Created            17/02/2017 19:29
 * @author            Jakub Dubec <jakub.dubec@gmail.com>
 */

namespace phpGPX\Parsers;

use phpGPX\Models\Segment;
use phpGPX\phpGPX;

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

    /**
     * @param $nodes \SimpleXMLElement[]
     * @return Segment[]
     */
    public static function parse($nodes)
    {
        $segments = [];

        foreach ($nodes as $node) {
            $segment = new Segment();

            if (!$node->count()) {
                continue;
            }

            if (isset($node->trkpt)) {
                $segment->points = [];

                foreach ($node->trkpt as $point) {
                    $segment->points[] = PointParser::parse($point);
                }
            }
            $segment->extensions = isset($node->extensions) ? ExtensionParser::parse($node->extensions) : null;

            if (phpGPX::$CALCULATE_STATS) {
                $segment->recalculateStats();
            }

            $segments[] = $segment;
        }

        return $segments;
    }

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

        foreach ($segment->points as $point) {
            $node->appendChild(PointParser::toXML($point, $document));
        }

        if (!empty($segment->extensions)) {
            $node->appendChild(ExtensionParser::toXML($segment->extensions, $document));
        }

        return $node;
    }

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

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

        return $result;
    }
}