<?php
$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$currentHost = $_SERVER['HTTP_HOST'] ?? $_SERVER['SERVER_NAME'] ?? '';
$baseUrl = $scheme . '://' . $currentHost;
$paths = ['/', '/topics/', '/boards/', '/discover/', '/rank/', '/me/', '/about/', '/stories/', '/recommend/', '/help/', '/rules/', '/news/', '/activity/'];
header('Content-Type: application/xml; charset=utf-8');
echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' . "\n";
foreach ($paths as $path) {
    echo '  <url><loc>' . htmlspecialchars(rtrim($baseUrl, '/') . $path, ENT_XML1, 'UTF-8') . '</loc><lastmod>' . date('Y-m-d') . '</lastmod><changefreq>weekly</changefreq><priority>' . ($path === '/' ? '1.0' : '0.8') . '</priority></url>' . "\n";
}
echo '</urlset>' . "\n";
?>
