<?php
header('Content-Type: application/xml; charset=utf-8');
$https = $_SERVER['HTTPS'] ?? '';
$forwarded = $_SERVER['HTTP_X_FORWARDED_PROTO'] ?? '';
$scheme = (($https !== '' && $https !== 'off') || $forwarded === 'https') ? 'https' : 'http';
$host = $_SERVER['HTTP_HOST'] ?? ($_SERVER['SERVER_NAME'] ?? '');
$host = preg_replace('/[^A-Za-z0-9:\.\-]/', '', $host);
$base = $host === '' ? '' : $scheme . '://' . $host;
$paths = [
    '/',
    '/video/',
    '/features/',
    '/cases/',
    '/reputation/',
    '/contact/',
    '/download/',
    '/brand-story/',
    '/selected-recommend/',
    '/industry-insight/',
    '/user-guide/',
    '/update-log/',
    '/site-data/'
];
$today = date('Y-m-d');
echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
echo "<urlset>\n";
foreach ($paths as $path) {
    $loc = htmlspecialchars(rtrim($base, '/') . $path, ENT_QUOTES, 'UTF-8');
    echo "  <url>\n";
    echo "    <loc>{$loc}</loc>\n";
    echo "    <lastmod>{$today}</lastmod>\n";
    echo "    <changefreq>weekly</changefreq>\n";
    echo "    <priority>" . ($path === '/' ? '1.0' : '0.8') . "</priority>\n";
    echo "  </url>\n";
}
echo "</urlset>\n";
