<?php
// phpcs:disable Yoast.NamingConventions.NamespaceName.TooLong -- Needed in the folder structure.
namespace Yoast\WP\SEO\Schema_Aggregator\Application\Schema_Map;
use DOMDocument;
use RuntimeException;
use Yoast\WP\SEO\Schema_Aggregator\Infrastructure\Schema_Map\Schema_Map_Config;
/**
* Converts the schema map to an xml representation.
*/
class Schema_Map_Xml_Renderer {
/**
* The schema map configuration.
*
* @var Schema_Map_Config
*/
private $config;
/**
* Constructor.
*
* @param Schema_Map_Config $config The schema map configuration.
*/
public function __construct( Schema_Map_Config $config ) {
$this->config = $config;
}
/**
* Converts the schema map to an XML string.
*
* @param array<array<string>> $schema_map The schema map data.
*
* @return string The XML representation of the schema map.
*
* @throws RuntimeException If the input structure is invalid or XML generation fails.
*/
public function render( array $schema_map ): string {
$dom = new DOMDocument( '1.0', 'UTF-8' );
$url_set = $dom->createElement( 'urlset' );
$url_set->setAttribute( 'xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9' );
$dom->appendChild( $url_set );
$change_freq = $this->config->get_changefreq();
$priority = $this->config->get_priority();
foreach ( $schema_map as $entry ) {
if ( ! isset( $entry['url'] ) || ! isset( $entry['lastmod'] ) ) {
continue;
}
$url = $dom->createElement( 'url' );
$url->setAttribute( 'contentType', 'structuredData/schema.org' );
$loc = $dom->createElement( 'loc' );
$loc->appendChild( $dom->createTextNode( $entry['url'] ) );
$url->appendChild( $loc );
$last_mod = $dom->createElement( 'lastmod' );
$last_mod->appendChild( $dom->createTextNode( $entry['lastmod'] ) );
$url->appendChild( $last_mod );
$cf = $dom->createElement( 'changefreq' );
$cf->appendChild( $dom->createTextNode( $change_freq ) );
$url->appendChild( $cf );
$prio = $dom->createElement( 'priority' );
$prio->appendChild( $dom->createTextNode( $priority ) );
$url->appendChild( $prio );
$url_set->appendChild( $url );
}
$xml = $dom->saveXML();
if ( $xml === false ) {
throw new RuntimeException( 'Failed to generate XML from DOMDocument' );
}
return $xml;
}
}