<?php
header('Content-Type: application/xml; charset=utf-8');
$host=$_SERVER['HTTP_HOST'] ?? '';
$scheme=(!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$base=$host ? $scheme.'://'.$host : '';
$today=date('Y-m-d');
$paths=['/','/topics/','/boards/','/discover/','/rank/','/my/','/about/','/brand-story/','/picks/','/topic-square/','/user-rank/','/help/','/community-rules/','/news/','/activity/'];
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<?php foreach($paths as $p): ?>
  <url>
    <loc><?php echo htmlspecialchars($base.$p, ENT_XML1); ?></loc>
    <lastmod><?php echo $today; ?></lastmod>
    <changefreq><?php echo $p==='/'?'daily':'weekly'; ?></changefreq>
    <priority><?php echo $p==='/'?'1.0':'0.8'; ?></priority>
  </url>
<?php endforeach; ?>
</urlset>
