/**
     * 微信二维码预支付
     * @param string $total 价格
     * @param string $outTradeNo 商户订单号
     * @param int $duration 二维码有效时长 单位:秒
     * @return array 返回二维码链接
     */
    public static function wxNativePrePay(string $total, string $outTradeNo, $duration = 180)
    {
        try {
            $config = Common::get_platform_payInfo();
            $time = time();
            $time_expire = $time + $duration;
            $rfc3339_time = date(DATE_RFC3339, $time_expire);
            $total = intval(bcmul($total, 100));

            $payInfo = [
                'out_trade_no' => $outTradeNo,
                'appid' => $config['appId'],
                'description' => '支付维修费用',
                'total' => $total,
                'time_expire' => (string)$rfc3339_time,
            ];

            $instance = Common::wxPayObj();
            $resp = $instance
                ->chain('v3/pay/transactions/native')
                ->post(['json' => [
                    'mchid' => $config['merchantId'],
                    'out_trade_no' => $payInfo['out_trade_no'],
                    'time_expire' => $payInfo['time_expire'],
                    'appid' => $config['appId'],
                    'description' => $payInfo['description'],
                    'notify_url' => $config['notify_url'],
                    'amount' => [
                        'total' => $payInfo['total'],
                        'currency' => 'CNY'
                    ],
                ]]);
            $data = [];
            $data['code'] = (int)$resp->getStatusCode();
            $data['body'] = $resp->getBody();
            return $data;

        } catch (Exception $exception) {
            if ($exception instanceof RequestException && $exception->hasResponse()) {
                $message = "错误回复：" + $exception->getResponse() + "错误码:" + $exception->getResponse()->getStatusCode();
                +"错误原因" + $exception->getResponse()->getReasonPhrase();
                Log::info($message);
            }
            return [];
        }
    }

public static function  get_platform_payInfo() {
        $data['merchantPrivateKeyFilePath'] = env('MERCHANT_FILE_PATH');
        $data['platformCertificateFilePath'] = env('PLATFORM_FILE_PATH');
        $data['merchantId'] = env('WX_MERCHANT_ID');
        $data['merchantCertificateSerial'] = env('CERTIFICATE_SERIAL');
        $data['appId'] = env('WX_APP_ID');
        $data['appSecret'] = env('WX_APP_SECRET');
        $data['notify_url'] = env('WX_NOTIFY_URL');
        $data['api_key'] = env('WX_API_KEY');
        return $data;
    }

    public static function wxPayObj()
    {
        try {
           $payInfo = self::get_platform_payInfo();
            // 从本地文件中加载「商户API私钥」，「商户API私钥」会用来生成请求的签名
            $merchantPrivateKeyInstance = Rsa::from($payInfo['merchantPrivateKeyFilePath'], Rsa::KEY_TYPE_PRIVATE);
            // 从本地文件中加载「微信支付平台证书」，用来验证微信支付应答的签名
            $platformPublicKeyInstance = Rsa::from($payInfo['platformCertificateFilePath'], Rsa::KEY_TYPE_PUBLIC);
            // 从「微信支付平台证书」中获取「证书序列号」
            $platformCertificateSerial = PemUtil::parseCertificateSerialNo($payInfo['platformCertificateFilePath']);
            // 构造一个 APIv3 客户端实例
            $instance = Builder::factory([
                'mchid'      => $payInfo['merchantId'],
                'serial'     => $payInfo['merchantCertificateSerial'],
                'privateKey' => $merchantPrivateKeyInstance,
                'certs'      => [
                    $platformCertificateSerial => $platformPublicKeyInstance,
                ],
            ]);
            return $instance;
        } catch (Exception $e) {
            Log::info("返回微信支付对象失败", $e);
            return false;
        }
    }