<?php
header('Content-Type: application/xml; charset=UTF-8');
$scheme = ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') || (($_SERVER['HTTP_X_FORWARDED_PROTO'] ?? '') === 'https')) ? 'https' : 'http';
$host = preg_replace('/[^A-Za-z0-9\.\-\:\[\]]/', '', $_SERVER['HTTP_HOST'] ?? ($_SERVER['SERVER_NAME'] ?? ''));
$base = htmlspecialchars($scheme . '://' . $host, ENT_XML1, 'UTF-8');
$today = date('Y-m-d');
$paths = [
  '/', '/hot/', '/video/', '/observe/', '/topics/', '/authors/', '/about/', '/contact/', '/faq/', '/submit/',
  '/article/baoliao-video-guide/', '/article/trending-fact-check/', '/article/life-video-editing/', '/article/mobile-video-seo/'
];
echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<?php foreach ($paths as $path): ?>
  <url>
    <loc><?= $base . htmlspecialchars($path, ENT_XML1, 'UTF-8') ?></loc>
    <lastmod><?= $today ?></lastmod>
    <changefreq><?= $path === '/' ? 'daily' : 'weekly' ?></changefreq>
    <priority><?= $path === '/' ? '1.0' : '0.8' ?></priority>
  </url>
<?php endforeach; ?>
</urlset>
