<?php
header('Content-Type: application/xml; charset=utf-8');
$host = $_SERVER['HTTP_HOST'] ?? $_SERVER['SERVER_NAME'] ?? '';
$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$origin = $host ? $scheme . '://' . $host : '';
$today = date('Y-m-d');
$paths = ['/', '/collections/', '/material-notes/', '/atelier-journal/', '/space-record/', '/visit-guide/', '/visual-archive/'];
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
?>
<urlset xmlns="<?= 'http://www.sitemaps' . '.org/schemas/sitemap/0.9' ?>">
<?php foreach ($paths as $p): ?>
  <url>
    <loc><?= htmlspecialchars($origin . $p, ENT_XML1, 'UTF-8') ?></loc>
    <lastmod><?= $today ?></lastmod>
    <changefreq>weekly</changefreq>
    <priority><?= $p === '/' ? '1.0' : '0.8' ?></priority>
  </url>
<?php endforeach; ?>
</urlset>
