@php

    class BniCheck
    {
        const TIME_DIFF_LIMIT = 480;

        public static function encrypt(array $json_data, $cid, $secret)
        {
            return self::doubleEncrypt(strrev(time()) . '.' . json_encode($json_data), $cid, $secret);
        }

        public static function decrypt($hased_string, $cid, $secret)
        {
            $parsed_string = self::doubleDecrypt($hased_string, $cid, $secret);
            [$timestamp, $data] = array_pad(explode('.', $parsed_string, 2), 2, null);
            if (self::tsDiff(strrev($timestamp)) === true) {
                return json_decode($data, true);
            }
            return null;
        }

        private static function tsDiff($ts)
        {
            return abs($ts - time()) <= self::TIME_DIFF_LIMIT;
        }

        private static function doubleEncrypt($string, $cid, $secret)
        {
            $result = '';
            $result = self::enc($string, $cid);
            $result = self::enc($result, $secret);
            return strtr(rtrim(base64_encode($result), '='), '+/', '-_');
        }

        private static function enc($string, $key)
        {
            $result = '';
            $strls = strlen($string);
            $strlk = strlen($key);
            for ($i = 0; $i < $strls; $i++) {
                $char = substr($string, $i, 1);
                $keychar = substr($key, ($i % $strlk) - 1, 1);
                $char = chr((ord($char) + ord($keychar)) % 128);
                $result .= $char;
            }
            return $result;
        }

        private static function doubleDecrypt($string, $cid, $secret)
        {
            $result = base64_decode(
                strtr(str_pad($string, ceil(strlen($string) / 4) * 4, '=', STR_PAD_RIGHT), '-_', '+/'),
            );
            $result = self::dec($result, $cid);
            $result = self::dec($result, $secret);
            return $result;
        }

        private static function dec($string, $key)
        {
            $result = '';
            $strls = strlen($string);
            $strlk = strlen($key);
            for ($i = 0; $i < $strls; $i++) {
                $char = substr($string, $i, 1);
                $keychar = substr($key, ($i % $strlk) - 1, 1);
                $char = chr((ord($char) - ord($keychar) + 256) % 128);
                $result .= $char;
            }
            return $result;
        }
    }
@endphp

@php

    //    $client_id = env('BNI_CLIENT_ID_PUSAT');
    //    $secret_key = env('BNI_SECRET_KEY_PUSAT');

    $client_id = env('BNI_CLIENT_ID_RESELLER');
    $secret_key = env('BNI_SECRET_KEY_RESELLER');

    $data_aktivasi_va = [
        'customer_name' => 'Eko Hendro W',
        'datetime_expired' => date('c', time() + 720 * 3600),
        'trx_id' => '10812',
        'virtual_account' => 9883111300011019,
        'type' => 'createbilling',
        'billing_type' => 'o',
        'client_id' => $client_id,
    ];

    $hashed_string = BniCheck::encrypt($data_aktivasi_va, $client_id, $secret_key);

    $data = [
        'client_id' => $client_id,
        'data' => $hashed_string,
    ];

    $response = bni_get_content(env('BNI_API_URL'), json_encode($data));
    $response_json = json_decode($response, true);

    if ($response_json['status'] !== '000') {
    } else {
        $data_response = BniCheck::decrypt($response_json['data'], $client_id, $secret_key);

        dd($data_response);
    }

@endphp