<?php
header('Content-Type: application/xml; charset=utf-8');
$host = preg_replace('/[^A-Za-z0-9\.\-:\[\]]/', '', $_SERVER['HTTP_HOST'] ?? '');
$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$base = $scheme . '://' . $host;
$paths = ['/', '/features/', '/guide/', '/updates/', '/download/', '/help/', '/tips/', '/faq/', '/contact/'];
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
$smNs = implode('', ['http', ':', '/', '/', 'www', '.', 'sitemaps', '.', 'org', '/schemas/sitemap/0.9']);
echo "<urlset xmlns=\"" . $smNs . "\">\n";
foreach ($paths as $p) {
  echo "  <url><loc>" . htmlspecialchars($base . $p, ENT_QUOTES, 'UTF-8') . "</loc><lastmod>" . date('Y-m-d') . "</lastmod><changefreq>weekly</changefreq><priority>" . ($p==='/'?'1.0':'0.8') . "</priority></url>\n";
}
echo "</urlset>\n";
?>
