<?php
date_default_timezone_set('Asia/Jakarta');
// MANUAL ROUTING
$uri = $_SERVER['REQUEST_URI'];
$path = parse_url($uri, PHP_URL_PATH);
$segments = explode('/', trim($path, '/'));

// OVERRIDE route=error jika ada token
if (isset($_GET['route']) && $_GET['route'] === 'error' && isset($_GET['token']) && strlen($_GET['token']) === 64) {
    unset($_GET['route']);
}

// MANUAL ROUTING
if (count($segments) >= 1 && strlen($segments[0]) === 64 && ctype_xdigit(strtolower($segments[0]))) {
    $_GET['token'] = $segments[0];
    
    if (count($segments) >= 2) {
        $r = strtolower($segments[1]);
        if (in_array($r, array('auth','portal','payment'))) {
            $_GET['route'] = $r;
        } elseif ($r === 'status' && count($segments) >= 3) {
            $_GET['route'] = 'status';
            $_GET['trx'] = $segments[2];
        }
    } else {
        $_GET['route'] = 'auth'; // DEFAULT
    }
}

$baseUrl = 'https://wp.manjapro.net/';

session_start();

include __DIR__ . '/../config/connect.php';
include __DIR__ . '/../config/tanggal_indo.php';

require 'services/Customer.php';
require 'services/Invoice.php';
require 'services/PaymentService.php';
require 'services/GatewayFactory.php';
require 'services/PaymentMethodMapper.php';

/**
 * INIT SERVICE
 */
$customerService = new Customer($pdo);
$invoiceService  = new Invoice($pdo);
$paymentService  = new PaymentService($pdo);

/**
 * HELPER
 */
function setAlert($msg){
    $_SESSION['error'] = $msg;
}

function redirectTo($path){
    header("Location: /$path");
    exit;
}

/**
 * PARAM
 */
$token = isset($_GET['token']) ? $_GET['token'] : null;
$route = isset($_GET['route']) ? $_GET['route'] : null;
$trx_id = isset($_GET['trx']) ? $_GET['trx'] : null;

$session_token = isset($_SESSION['token']) ? $_SESSION['token'] : null;
$isLogin = isset($_SESSION['customer_id']);

/**
 * ================================
 * TOKEN SESSION VALIDATION ✅
 * ================================
 */
if ($token && $isLogin) {
    // Token beda → logout & ke auth
    if ($session_token !== $token) {
        session_destroy();
        setAlert("Token tidak valid, login ulang");
        redirectTo($token . '/auth');
    }
}

// Gak ada token + sudah login → ke portal TOKEN SESSION
if (!$token && $isLogin && $session_token) {
    redirectTo($session_token . '/portal');
}

/**
 * ================================
 * AUTO REDIRECT KE PORTAL jika sudah login
 * ================================
 */
if ($isLogin && $token && ($route === 'auth' || !$route)) {
    redirectTo($token . '/portal');
}

/**
 * ================================
 * ERROR PAGE (tanpa token)
 * ================================
 */
if ($route === 'error' && !$token) {
    require 'views/error.php';
    exit;
}

/**
 * ================================
 * WAJIB TOKEN (JIKA BELUM LOGIN)
 * ================================
 */
if (!$token && !$isLogin) {
    redirectTo('error');
}

/**
 * ================================
 * VALIDASI TOKEN (TANPA LOGIN)
 * ================================
 */
if ($token && !$isLogin) {
    if (strlen($token) !== 64 || !ctype_xdigit($token)) {
        setAlert("Token tidak valid");
        redirectTo('error');
    }

    $customerFromToken = $customerService->getByToken($token);
    if (!$customerFromToken) {
        setAlert("Token tidak ditemukan");
        redirectTo('error');
    }

    $_SESSION['temp_token'] = $token;
}

/**
 * ================================
 * PROTECT ROUTE
 * ================================
 */
$protected = array('portal','payment','status');
if (in_array($route, $protected) && !$isLogin) {
    redirectTo($token . '/auth');
}

/**
 * ================================
 * LOAD DATA
 * ================================
 */
$customer = null;
$unpaid = array();
$total = 0;
$history = array();
$paymentActive = null;

if ($isLogin) {
    $customer = $customerService->getDetail($_SESSION['customer_id']);
    if (!$customer) {
        session_destroy();
        redirectTo('error');
    }

    $unpaid  = $invoiceService->getUnpaid($customer['id']);
    $total   = $invoiceService->getTotalUnpaid($customer['id']);
    $history = $invoiceService->getLastPaid($customer['id']);

    if ($trx_id) {
        $paymentActive = $invoiceService->getPayment($trx_id, $customer['id']);
    }

    $paymentPending = $invoiceService->getPaymentPending($unpaid['id']) ?? null;

    $paymentStatus = $invoiceService->getPaymentStatus($unpaid['transaction_id']) ?? null;
}

/**
 * ================================
 * HANDLE POST
 * ================================
 */
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // AUTH
    if ($route === 'auth') {
        $otp   = isset($_POST['otp']) ? $_POST['otp'] : '';
        $token = isset($_SESSION['temp_token']) ? $_SESSION['temp_token'] : null;

        if (!$token) redirectTo('error');

        if (strlen($otp) !== 4 || !ctype_digit($otp)) {
            setAlert("Nomor harus 4 digit");
            redirectTo($token . '/auth');
        }

        $customerFromToken = $customerService->getByToken($token);
        if (!$customerFromToken) redirectTo('error');

        $valid = $customerService->verifyLastPhone($customerFromToken['id'], $otp);
        if (!$valid) {
            setAlert("4 nomor terakhir yang anda masukan salah");
            redirectTo($token . '/auth');
        }

        $_SESSION['customer_id'] = $customerFromToken['id'];
        $_SESSION['server_id']   = $customerFromToken['id_data_server'];
        $_SESSION['token']       = $token;
        unset($_SESSION['temp_token']);

        redirectTo($token . '/portal');
    }

    // PAYMENT
    if ($route === 'payment_process') {

        header('Content-Type: application/json');

        if (!$isLogin) {
            echo json_encode([
                'success' => false,
                'message' => 'Session tidak valid'
            ]);
            exit;
        }

        $method = $_POST['method'] ?? null;

        if (!$method) {
            echo json_encode([
                'success' => false,
                'message' => 'Pilih metode pembayaran'
            ]);
            exit;
        }

        $result = $paymentService->createPayment([
            'customer_id' => $_SESSION['customer_id'],
            'method'      => $method,
            'customer'    => $customer,
            'gateway_type'=> $customer['payment_gateway'],
            'invoices'    => $unpaid['id'] ?? null
        ]);

        if (!$result['success']) {
            echo json_encode([
                'success' => false,
                'message' => $result['message']
            ]);
            exit;
        }

        echo json_encode([
            'success' => true,
            'trx' => $result['transaction_id']
        ]);
        exit;
    }

    if ($route === 'payment' AND $customer['payment_gateway'] == 'doku' ) {
        
        header('Content-Type: application/json');

        if (!$isLogin) {
            echo json_encode([
                'success' => false,
                'message' => 'Session tidak valid'
            ]);
            exit;
        }

        $result = $paymentService->createPayment([
            'customer_id' => $_SESSION['customer_id'],
            'customer'    => $customer,
            'gateway_type'=> $customer['payment_gateway'],
            'invoices'    => $unpaid['id'] ?? null,
            'invoice_detail' => $unpaid
        ]);

        if ($result['success'] && !empty($result['data']['payment_url'])) {
            
            header("Location: " . $result['data']['payment_url']);
            exit;
        } else {
            echo json_encode([
                'success' => false,
                'message' => $result['message'] ?? 'Gagal membuat pembayaran'
            ]);
            exit;
        }
        
    }
}

/**
 * ================================
 * ROUTING
 * ================================
 */
switch ($route) {
    case 'portal':
        require 'views/portal.php';
        break;
    case 'payment':
        require 'views/payment.php';
        break;
    // case 'payment_proccess':
    //     require 'views/payment_proccess.php';
    //     break;
    case 'status':
        require 'views/status.php';
        break;
    case 'auth':
    case null:
        require 'views/auth.php';
        break;
    case 'error':
        require 'views/error.php';
        break;
    default:
        require 'views/error.php';
}

/**
 * ALERT
 */
if ($route !== 'error' && isset($_SESSION['error'])): ?>
<script src='https://cdn.jsdelivr.net/npm/sweetalert2@11'></script>
<script>
Swal.fire({
    icon: 'error',
    title: 'Gagal',
    text: '<?= addslashes($_SESSION['error']) ?>'
});
</script>
<?php unset($_SESSION['error']); endif; ?>