<?php
/**
 * Created by PhpStorm.
 * Author: 芸众商城 www.yunzshop.com
 * Date: 2017/3/17
 * Time: 下午12:00
 */

namespace app\common\services;

use app\common\events\payment\ChargeComplatedEvent;
use app\common\exceptions\AppException;
use app\common\exceptions\ShopException;
use app\common\facades\EasyWeChat;
use app\common\helpers\Client;
use app\common\helpers\Url;
use app\common\models\McMappingFans;
use app\common\models\Member;
use app\common\models\OrderPay;
use app\common\models\PayOrder;
use app\common\models\PayType;
use app\common\models\WechatWithdrawLog;
use app\common\services\finance\Withdraw;
use app\common\services\payment\WechatMinPay;
use app\common\services\wechatApiV3\ApiV3Status;
use app\frontend\modules\member\services\factory\MemberFactory;
use app\frontend\modules\order\services\OrderPaySuccessService;
use app\frontend\modules\order\services\OrderService;
use Yunshop\WechatTrade\services\AddOrderService;

class WechatPay extends Pay
{
    private $pay_type;
    private static $attach_type = 'account';

    public function __construct()
    {
        $this->pay_type = config('app.pay_type');
    }

    public function doPay($data = [], $payType = 1)
    {

        $min_client_type = \YunShop::request()->client_type;
        if ($min_client_type && $min_client_type == 2) {
            return  (new WechatMinPay())->doPay($data);

        }


        $client_type = null;
        $text = $data['extra']['type'] == 1 ? '支付' : '充值';
        $op = '微信订单' . $text . ' 订单号：' . $data['order_no'];
        $pay_type_name = PayType::get_pay_type_name($payType);
        $pay_order_model = $this->log($data['extra']['type'], $pay_type_name, $data['amount'], $op, $data['order_no'], Pay::ORDER_STATUS_NON, \YunShop::app()->getMemberId());

        if (empty(\YunShop::app()->getMemberId())) {
            throw new AppException('无法获取用户ID');
        }

        if (\YunShop::request()->client_type) {
            $client_type = \YunShop::request()->client_type;
        } else {
            $client_type = $payType;
        }

        $openid = Member::getOpenIdForType(\YunShop::app()->getMemberId(), $client_type);
        \Log::debug('-----pay_member_id-----'. \YunShop::app()->getMemberId());
        //不同支付类型选择参数
        $pay = $this->payParams($payType);

        if (empty($pay['weixin_mchid']) || empty($pay['weixin_apisecret'])
            || empty($pay['weixin_appid']) || empty($pay['weixin_secret'])) {

            throw new AppException('没有设定支付参数');
        }

        $notify_url = Url::shopSchemeUrl('payment/wechat/notifyUrl.php');
        $payment     = $this->getEasyWeChatApp($pay, $notify_url);


        //支付方式不等于微信app
        if (in_array($payType, [PayFactory::PAY_APP_WEACHAT, PayFactory::WECHAT_CPS_APP_PAY])) {
            $data['trade_type'] = 'APP';
        } else {
            $data['trade_type'] = 'JSAPI';
        }

        $order = self::getEasyWeChatOrder($data, $openid, $pay_order_model,$payType);

        $prepayId = null;

        //支付方式不等于微信app
        if ($payType == PayFactory::PAY_APP_WEACHAT) {
            return true;
        } else {
            $result = $payment->order->unify($order);
            \Log::debug('预下单', $result);
            if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS'){
                $prepayId = $result['prepay_id'];

                $this->changeOrderStatus($pay_order_model, Pay::ORDER_STATUS_WAITPAY,'');
            } elseif ($result['return_code'] == 'SUCCESS') {
                throw new AppException($result['err_code_des']);
            } else {
                throw new AppException($result['return_msg']);
            }
            $config = $payment->jssdk->sdkConfig($prepayId);
            $config['appId'] = $pay['weixin_appid'];
            $config['prepayId'] = $prepayId;

            if($data['trade_type'] == 'APP'){
                $config['partnerid'] = $pay['weixin_mchid'] ? : '';
            }
			$js['appId'] = $config['appId'];

            return ['config'=>$config, 'js'=>json_encode($js)];
        }
    }

    /**
     * 微信退款
     *
     * @param 订单号 $out_trade_no
     * @param 订单总金额 $totalmoney
     * @param 退款金额 $refundmoney
     * @return array
     */
    public function doRefund($out_trade_no, $totalmoney, $refundmoney)
    {
        $out_refund_no = $this->setUniacidNo(\YunShop::app()->uniacid);
        $op = '微信退款 订单号：' . $out_trade_no . '退款单号：' . $out_refund_no . '退款总金额：' . $totalmoney;
        if (empty($out_trade_no)) {
            throw new AppException('参数错误');
        }
        $pay_type_id = OrderPay::get_paysn_by_pay_type_id($out_trade_no);
        $pay_type_name = PayType::get_pay_type_name($pay_type_id);
        $pay_order_model = $this->refundlog(Pay::PAY_TYPE_REFUND, $pay_type_name, $refundmoney, $op, $out_trade_no, Pay::ORDER_STATUS_NON, 0);
        //app退款查询app配置中的微信支付信息
        if ($pay_type_id == PayFactory::PAY_APP_WEACHAT) {
            $pay = \Setting::get('shop_app.pay');
        } else {
            $pay = $this->payParams($pay_type_id);
        }


        if (empty($pay['weixin_mchid']) || empty($pay['weixin_apisecret'])) {
            throw new AppException('没有设定支付参数');
        }

        if (empty($pay['weixin_cert']) || empty($pay['weixin_key'])) {
            throw new AppException('未上传完整的微信支付证书，请到【系统设置】->【支付方式】中上传!');
        }


        $notify_url = '';
        $payment = $this->getEasyWeChatApp($pay, $notify_url);

        try {
            $totalmoney = bcmul($totalmoney, 100,0);
            $refundmoney = bcmul($refundmoney, 100,0);
            $result = $payment->refund->byOutTradeNumber($out_trade_no, $out_refund_no, $totalmoney, $refundmoney);
        } catch (\Exception $e) {
            \Log::debug('---微信退款接口请求错误---', $e->getMessage());

            throw new AppException('微信接口错误:' . $e->getMessage());
        }

        $this->payResponseDataLog($out_trade_no, '微信退款', json_encode($result));

        //微信申请退款失败
        if (isset($result['result_code']) && strtoupper($result['result_code']) == 'FAIL') {
            \Log::debug('---微信退款申请错误---', $result);
            throw new AppException('微信退款申请错误:'.$result['err_code'] . '-' . $result['err_code_des']);
        }

        $status = $this->queryRefund($payment, $out_trade_no);
        \Log::debug('---退款状态---', [$status]);
        if ($status == 'PROCESSING' || $status == 'SUCCESS' || ($status == 'fail' && $result->refund_id)){
            $this->changeOrderStatus($pay_order_model, Pay::ORDER_STATUS_COMPLETE, $result['transaction_id']);
            return true;
        } else {
            \Log::debug('---微信退款接口返回错误---', $result);

            throw new AppException('微信接口错误:'.$result['return_msg'] . '-' . $result['err_code_des'] . '/' . $status);
        }
    }

    /**
     * 微信提现
     *
     * @param 提现者用户ID $member_id
     * @param 提现金额 $money
     * @param string $desc
     * @param int $type
     * @param int $withdraw_type 0商城提现1供应商提现
     * @return array
     */
    public function doWithdraw($member_id, $out_trade_no, $money, $desc='', $type=1,$withdraw_type = 0)
    {
        //判断是否使用新版V3接口
        $income_set = \Setting::get('shop.pay');
        if ($type == 1 && $income_set['weixin_apiv3']) {//使用新版V3接口并且是打款到钱包
            return $this->doWithdrawV3($member_id, $out_trade_no, $money, $desc, $type,$withdraw_type);
        }

        //$out_trade_no = $this->setUniacidNo(\YunShop::app()->uniacid);

        $op = '微信钱包提现 订单号：' . $out_trade_no . '提现金额：' . $money;
        $pay_order_model = $this->withdrawlog(Pay::PAY_TYPE_WITHDRAW, $this->pay_type[Pay::PAY_MODE_WECHAT], $money, $op, $out_trade_no, Pay::ORDER_STATUS_NON, $member_id);

        $pay = $this->payParams($type);

        if (empty($pay['weixin_mchid']) || empty($pay['weixin_apisecret'])) {
            throw new AppException('没有设定支付参数');
        }

        if (empty($pay['weixin_cert']) || empty($pay['weixin_key'])) {
            throw new AppException('\'未上传完整的微信支付证书，请到【系统设置】->【支付方式】中上传!\'');
        }
        if (\YunShop::request()->type) {
            $client_type = \YunShop::request()->type;
        } else {
            $client_type = $type;
        }

        $openid = Member::getOpenIdForType($member_id, $client_type);
        if (empty($openid)) {
            throw new AppException('提现用户不存在');
        }
//        $mc_mapping_fans_model = McMappingFans::getFansById($member_id);
//
//        if ($mc_mapping_fans_model) {
//            $openid = $mc_mapping_fans_model->openid;
//        } else {
//            throw new AppException('提现用户不存在');
//        }

        $notify_url = '';
        $app = $this->getEasyWeChatApp($pay, $notify_url);
        if ($type == 1) {//钱包
            $merchantPay = $app->transfer;

            $merchantPayData = [
                'partner_trade_no' => empty($out_trade_no) ? time() . Client::random(4, true) : $out_trade_no,
                'openid' => $openid,
                'check_name' => 'NO_CHECK',
                'amount' => $money * 100,
                'desc' => empty($desc) ? '佣金提现' : $desc,
                'spbill_create_ip' => self::getClientIP(),
            ];

            //请求数据日志
            $this->payRequestDataLog($pay_order_model->id, $pay_order_model->type,
                $pay_order_model->type, json_encode($merchantPayData));

            $pay_result = $merchantPay->toBalance($merchantPayData);

            if (isset($pay_result['partner_trade_no'])) {
                $result = $merchantPay->queryBalanceOrder($pay_result['partner_trade_no']);

                if ($result['result_code'] == 'FAIL') {
                    $result = $pay_result;
                }
            } else {
                $result = $pay_result;
            }


        } else {//红包
            $luckyMoney = $app->redpack;

            $luckyMoneyData = [
                'mch_billno'       => $pay['weixin_mchid'] . date('YmdHis') . rand(1000, 9999),
                'send_name'        => \YunShop::app()->account['name'],
                're_openid'        => $openid,
                'total_num'        => 1,
                'total_amount'     => $money * 100,
                'wishing'          => empty($desc) ? '佣金提现红包' : $desc,
                'client_ip'        => self::getClientIP(),
                'act_name'         => empty($act_name) ? '佣金提现红包' : $act_name,
                'remark'           => empty($remark) ? '佣金提现红包' : $remark,
            ];

            //请求数据日志
            $this->payRequestDataLog($pay_order_model->id, $pay_order_model->type,
                $pay_order_model->type, json_encode($luckyMoneyData));

            $pay_result = $luckyMoney->sendNormal($luckyMoneyData);

            if (isset($pay_result['mch_billno'])) {
                $result = $luckyMoney->info($pay_result['mch_billno']);

                if ($result['result_code'] == 'FAIL') {
                    $result = $pay_result;
                }
            } else {
                $result = $pay_result;
            }

        }

        //响应数据
        $this->payResponseDataLog($pay_order_model->out_order_no, $pay_order_model->type, json_encode($result));
\Log::debug('---提现状态---', [$result['status']]);
        if (isset($result['status']) && ($result['status'] == 'PROCESSING' || $result['status'] == 'SUCCESS' || $result['status'] == 'SENDING' || $result['status'] == 'SENT')){
            \Log::debug('提现返回结果', $result);
            $this->changeOrderStatus($pay_order_model, Pay::ORDER_STATUS_COMPLETE, $result['payment_no']);

            $this->payResponseDataLog($out_trade_no, '微信提现', json_encode($result));

//            Withdraw::paySuccess($result['partner_trade_no']);todo 打款成功之后也会执行，为啥要在这里执行一次？导致重复事件

            return ['errno' => 0, 'message' => '微信提现成功'];
        } else {
            \Log::debug('---微信提现返回接口错误---', $result);

            return ['errno' => 1, 'message' => '微信接口错误:' . $result['return_msg'] . '-' . $result['err_code_des']];
        }
    }

    public function doWithdrawV3($member_id, $out_trade_no, $money, $desc='', $type=1,$withdraw_type = 0)
    {
        try {
            $pay = $this->payParams($type);
            if (empty($pay['weixin_mchid']) || empty($pay['weixin_apisecret'])) {
//                throw new AppException('没有设定支付参数');
            }
            if (empty($pay['weixin_cert']) || empty($pay['weixin_key'])) {
                throw new AppException('\'未上传完整的微信支付证书，请到【系统设置】->【支付方式】中上传!\'');
            }
            if (empty($pay['weixin_apiv3_secret'])) {
                throw new AppException('\'未设置ApiV3密钥!\'');
            }

            $op = '微信钱包提现 订单号：' . $out_trade_no . '提现金额：' . $money;
            $pay_order_model = $this->withdrawlog(Pay::PAY_TYPE_WITHDRAW, $this->pay_type[Pay::PAY_MODE_WECHAT], $money, $op, $out_trade_no, Pay::ORDER_STATUS_NON, $member_id);

            $client_type = \YunShop::request()->type ? : $type;
            $openid = Member::getOpenIdForType($member_id, $client_type);
            if (empty($openid)) {
                throw new AppException('提现用户不存在');
            }

            $notify_url = '';
            $app = $this->getEasyWeChatApp($pay, $notify_url);

            if (WechatWithdrawLog::uniacid()->search(['withdraw_sn' => $out_trade_no,'type' => $withdraw_type,
                'many_status'=>[1,2]])->count()
            ) {
//                throw new \Exception('提现正在进行中或已完成');
                return ['errno' => 0, 'message' => '提现正在进行中'];
            }

            //取最后一条发送了请求的数据 todo 判断是否原参数请求
            $oldLog = WechatWithdrawLog::uniacid()
                ->search(['withdraw_sn' => $out_trade_no])
                ->where('status','!=',0)
                ->orderBy('id','desc')
                ->first();
            if ($oldLog && in_array($oldLog->fail_code,['NOT_ENOUGH','FREQUENCY_LIMITED','SYSTEM_ERROR'])) {
                $logFill = [
                    'uniacid' => $oldLog->uniacid,
                    'withdraw_sn' => $oldLog->withdraw_sn,
                    'out_batch_no' => $oldLog->out_batch_no,
                    'out_detail_no' => $oldLog->out_detail_no,
                ];
            } else {
                $logFill = [
                    'uniacid' => \YunShop::app()->uniacid,
                    'withdraw_sn' => $out_trade_no,
                    'out_batch_no' => WechatWithdrawLog::createOrderSn('WW','out_batch_no'),
                    'out_detail_no' => $out_trade_no,
                ];
            }

            $logFill['type'] = $withdraw_type;
            $logFill['pay_type'] = 1;
            $wechatWithdrawLog = WechatWithdrawLog::saveLog($logFill);
            $params = [
                'appid' => $pay['weixin_appid'],
                'out_batch_no' => $wechatWithdrawLog->out_batch_no,
                'batch_name' => empty($desc) ? '佣金提现' : $desc,
                'batch_remark' => empty($desc) ? '佣金提现' : $desc,
                'total_amount' => intval(bcmul($money,100)),
                'total_num'   => 1,
                'transfer_detail_list' => [
                    [
                        'out_detail_no' => $wechatWithdrawLog->out_detail_no,
                        'transfer_amount' => intval(bcmul($money,100)),
                        'transfer_remark' => empty($desc) ? '佣金提现' : $desc,
                        'openid' => $openid,
                    ]
                ]
            ];
            if ($money > 2000) {
                $member = Member::find($member_id);
                $username = $member->realname;
                if (!$username) {
                    throw new \Exception('提现大于2000元，会员需在会员信息里设置真实姓名，否则微信不予打款!');
                }
                $params['transfer_detail_list'][0]['user_name'] = $username;
            }
            $res = $app->transfer_v3->batches($params);
            \Log::debug('提现返回结果v3', $res);
            $this->payResponseDataLog($pay_order_model->out_order_no, $pay_order_model->type, json_encode($res));
            $wechatWithdrawLog->http_code = $res['http_code'];
            if ($res['code'] == 0) {//失败了
                $wechatWithdrawLog->fail_code = $res['data']['code'] ? : '';//错误码
                $wechatWithdrawLog->fail_msg  = $res['message'] ? : '';
                $wechatWithdrawLog->status = -2;
                $wechatWithdrawLog->save();
                throw new \Exception($wechatWithdrawLog->fail_msg?:'打款失败');
//                return ['errno' => 1, 'message' => '微信接口错误:' . $wechatWithdrawLog->fail_code . '-' . $wechatWithdrawLog->fail_msg];
            }
            $wechatWithdrawLog->status = 1;
            $wechatWithdrawLog->batch_id = $res['data']['batch_id'];
            $wechatWithdrawLog->save();
            //响应数据
            $this->payResponseDataLog($out_trade_no, '微信提现', json_encode($res));
            $this->changeOrderStatus($pay_order_model, Pay::ORDER_STATUS_COMPLETE, $res['data']['out_batch_no']);
            return ['errno' => 0, 'message' => '微信提现成功'];
        } catch (\Exception $e) {//抛出异常会返回代打款状态
            \Log::debug('微信支付-商家转账到零钱错误：'.$e->getMessage(),[$member_id, $out_trade_no, $money, $desc, $type,$withdraw_type]);
            throw new ShopException($e->getMessage());
        }
    }

    public function doReward($member_id, $out_trade_no, $money, $desc='', $type=1)
    {
        $op = '微信钱包奖励打款 订单号：' . $out_trade_no . '奖励金额：' . $money;
        //访问日志
        self::payAccessLog();
        //支付日志
        self::payLog(Pay::PAY_TYPE_WITHDRAW, $this->pay_type[Pay::PAY_MODE_WECHAT], $money, $op, $member_id);

        $pay = $this->payParams($type);

        if (empty($pay['weixin_mchid']) || empty($pay['weixin_apisecret'])) {
            throw new AppException('没有设定支付参数');
        }

        if (empty($pay['weixin_cert']) || empty($pay['weixin_key'])) {
            throw new AppException('\'未上传完整的微信支付证书，请到【系统设置】->【支付方式】中上传!\'');
        }

        if (\YunShop::request()->type) {
            $client_type = \YunShop::request()->type;
        } else {
            $client_type = $type;
        }

        $openid = Member::getOpenIdForType($member_id, $client_type);
        if (empty($openid)) {
            throw new AppException('奖励用户不存在');
        }

        $notify_url = '';
        $app = $this->getEasyWeChatApp($pay, $notify_url);

        if ($type == 1) {//钱包
            $merchantPay = $app->transfer;

            $merchantPayData = [
                'partner_trade_no' => empty($out_trade_no) ? time() . Client::random(4, true) : $out_trade_no,
                'openid' => $openid,
                'check_name' => 'NO_CHECK',
                'amount' => $money * 100,
                'desc' => empty($desc) ? '用户奖励' : $desc,
                'spbill_create_ip' => self::getClientIP(),
            ];

            //请求数据日志
            $this->payRequestDataLog($out_trade_no, $this->pay_type[Pay::PAY_MODE_WECHAT], $this->pay_type[Pay::PAY_MODE_WECHAT], json_encode($merchantPayData));

            $pay_result = $merchantPay->toBalance($merchantPayData);

            if (isset($pay_result['partner_trade_no'])) {
                $result = $merchantPay->queryBalanceOrder($pay_result['partner_trade_no']);

                if ($result['result_code'] == 'FAIL') {
                    $result = $pay_result;
                }
            } else {
                $result = $pay_result;
            }
        } else {//红包
            $luckyMoney = $app->redpack;

            $luckyMoneyData = [
                'mch_billno'       => $pay['weixin_mchid'] . date('YmdHis') . rand(1000, 9999),
                'send_name'        => \YunShop::app()->account['name'],
                're_openid'        => $openid,
                'total_num'        => 1,
                'total_amount'     => $money * 100,
                'wishing'          => empty($desc) ? '用户奖励红包' : $desc,
                'client_ip'        => self::getClientIP(),
                'act_name'         => empty($act_name) ? '用户奖励红包' : $act_name,
                'remark'           => empty($remark) ? '用户奖励红包' : $remark,
            ];

            //请求数据日志
            $this->payRequestDataLog($out_trade_no, $this->pay_type[Pay::PAY_MODE_WECHAT], $this->pay_type[Pay::PAY_MODE_WECHAT], json_encode($luckyMoneyData));

            $pay_result = $luckyMoney->sendNormal($luckyMoneyData);

            if (isset($pay_result['mch_billno'])) {
                $result = $luckyMoney->info($pay_result['mch_billno']);

                if ($result['result_code'] == 'FAIL') {
                    $result = $pay_result;
                }
            } else {
                $result = $pay_result;
            }

        }

        //响应数据
        $this->payResponseDataLog($out_trade_no, $this->pay_type[Pay::PAY_MODE_WECHAT], json_encode($result));
        \Log::debug('---奖励状态---', [$result['status']]);
        if (isset($result['status']) && ($result['status'] == 'PROCESSING' || $result['status'] == 'SUCCESS' || $result['status'] == 'SENDING' || $result['status'] == 'SENT')){
            \Log::debug('奖励返回结果', $result);
            $this->payResponseDataLog($out_trade_no, $desc, json_encode($result));
            return ['errno' => 0, 'message' => '奖励成功'];
        } else {
            \Log::debug('---奖励返回接口错误---', $result);
            return ['errno' => 1, 'message' => '微信接口错误:' . $result['return_msg'] . '-' . $result['err_code_des']];
        }
    }

    /**
     * 构造签名
     *
     * @var void
     */
    public function buildRequestSign()
    {
        // TODO: Implement buildRequestSign() method.
    }

    /**
     * 创建支付对象
     *
     * @param $pay
     * @return \EasyWeChat\Payment\Payment
     */
    public function getEasyWeChatApp($pay, $notify_url)
    {
        $options = [
            'app_id'             => $pay['weixin_appid'],
            'secret'             => $pay['weixin_secret'],
            'mch_id'             => $pay['weixin_mchid'],
            'key'                => $pay['weixin_apisecret'],
            'cert_path'          => $pay['weixin_cert'],
            'key_path'           => $pay['weixin_key'],
            'key_v3'             => $pay['weixin_apiv3_secret'] ? : '',
            'notify_url'         => $notify_url
        ];
        $app = EasyWeChat::payment($options);
        return $app;
    }

    /**
     * 创建预下单
     *
     * @param $data
     * @param $openid
     * @param $pay_order_model
     * @return easyOrder
     */
    public static function getEasyWeChatOrder($data, $openid, &$pay_order_model,$payType='')
    {
        $attributes = [
            'trade_type'       => $data['trade_type'], // JSAPI，NATIVE，APP...
            'body'             => mb_substr($data['subject'], 0, 40),
            'out_trade_no'     => $data['order_no'],
            'total_fee'        => $data['amount'] * 100, // 单位：分
            'nonce_str'        => Client::random(8) . "",
            'device_info'      => 'yun_shop',
            'attach'           => \YunShop::app()->uniacid . ':' . self::$attach_type,
            'spbill_create_ip' => self::getClientIP(),
            'openid'           => $openid
        ];


        if ($payType){
            $attributes['attach'] .= ':'.$payType;
        }

        //请求数据日志
        self::payRequestDataLog($attributes['out_trade_no'], $pay_order_model->type,
            $pay_order_model->third_type, json_encode($attributes));
        return $attributes;
    }

    private function changeOrderStatus($model, $status, $trade_no)
    {
        $model->status = $status;
        $model->trade_no = $trade_no;
        $model->save();
    }

    /**
     * 支付参数
     * @return array|mixed
     */
    private function payParams($payType = 1)
    {

        $pay = \Setting::get('shop.pay');

        if ($payType == 9){

            $pay = \Setting::get('shop_app.pay');
        } else{
            if (!is_null($event_arr = \app\common\modules\shop\ShopConfig::current()->get('special_wechat_app_pay_config'))) {
                foreach ($event_arr as $event){
                    $class = array_get($event, 'class');
                    $function = array_get($event, 'function');
                    $res = $class::$function(['payType'=>$payType]);
                    if ($res['result']){
                        $pay = $res['data']['setting'];
                    }
                }
            }

        }

        return $pay;
    }

    /**
     * 订单退款查询
     *
     * @param $payment
     * @param $out_trade_no
     * @return mixed
     */
    public function queryRefund($payment, $out_trade_no)
    {
        $result = $payment->refund->queryByOutTradeNumber($out_trade_no);

        foreach ($result as $key => $value) {
            if (preg_match('/refund_status_\d+/', $key)) {
                return $value;
            }
        }

        return 'fail';
    }


}