<?php
header('Content-Type: application/xml; charset=utf-8');
$host = preg_replace('/[^A-Za-z0-9\.\-:]/', '', $_SERVER['HTTP_HOST'] ?? ($_SERVER['SERVER_NAME'] ?? ''));
$scheme = (!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') ? 'https' : 'http';
$base = $host === '' ? '' : $scheme . '://' . $host;
$paths = ['/', '/story/', '/choice/', '/case/', '/insight/', '/guide/'];
$xmlns = 'http://' . 'www.' . 'sitemaps.' . 'org/schemas/sitemap/0.9';
echo '<?xml version="1.0" encoding="UTF-8"?>' . PHP_EOL;
echo '<urlset xmlns="' . htmlspecialchars($xmlns, ENT_QUOTES, 'UTF-8') . '">' . PHP_EOL;
foreach ($paths as $path) {
    echo '  <url>' . PHP_EOL;
    echo '    <loc>' . htmlspecialchars($base . $path, ENT_XML1, 'UTF-8') . '</loc>' . PHP_EOL;
    echo '    <lastmod>' . date('Y-m-d') . '</lastmod>' . PHP_EOL;
    echo '    <changefreq>weekly</changefreq>' . PHP_EOL;
    echo '    <priority>' . ($path === '/' ? '1.0' : '0.8') . '</priority>' . PHP_EOL;
    echo '  </url>' . PHP_EOL;
}
echo '</urlset>' . PHP_EOL;
?>
