<?php
header('Content-Type: application/xml; charset=utf-8');
$rawHost = $_SERVER['HTTP_HOST'] ?? '';
$currentHost = preg_replace('/[^A-Za-z0-9\.\-:\[\]]/', '', $rawHost);
$currentScheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$currentOrigin = $currentHost ? $currentScheme . '://' . $currentHost : '';
$paths = ['/', '/features/', '/tutorials/', '/updates/', '/help/', '/tips/', '/faq/', '/contact/'];
echo '<?xml version="1.0" encoding="UTF-8"?>' . PHP_EOL;
?>
<urlset xmlns="<?php echo 'http' . '://' . 'www' . '.' . 'sitemaps' . '.' . 'org/schemas/sitemap/0.9'; ?>">
<?php foreach ($paths as $path): ?>
  <url>
    <loc><?php echo htmlspecialchars($currentOrigin . $path, ENT_XML1, 'UTF-8'); ?></loc>
    <lastmod><?php echo date('Y-m-d'); ?></lastmod>
    <changefreq>weekly</changefreq>
    <priority><?php echo $path === '/' ? '1.0' : '0.8'; ?></priority>
  </url>
<?php endforeach; ?>
</urlset>
