<?php
/**
 * Created by PhpStorm.
 * User: travis
 * Date: 2019/12/12
 * Time: 6:20
 */

namespace api\logic;

use backend\modules\shop\models\ars\PaymentLog;
use backend\modules\shop\models\ars\WxPayConfig;
use Yii;
use EasyWeChat\Factory;
use yii\db\Exception;
use yii\helpers\Json;
use yii\httpclient\Client;
use yii\web\BadRequestHttpException;
use yii\base\BaseObject;

class WxPaymentLogic extends BaseObject
{
    /*支付类型*/
    const PAY_TYPE_WEB = 1;
    const PAY_TYPE_MINI_PROGRAM = 2;
    /*发起支付方式*/
    const TRADE_TYPE_JS_API = 'JSAPI';

    public $appId;
    public $mchId;
    public $key;
    public $certPath;
    public $keyPath;
    public $notifyUrl;
    public $tradeType;
    public $payType;
    public $app;
    public $order;


    /**
     * @param $payType
     * @throws BadRequestHttpException
     * @throws Exception
     * 微信统一下单
     */
    public function wxPayment($payType)
    {
        $this->payType = $payType;
        $unifyParams = $this->applyPaymentData();
        $this->unify($unifyParams);
    }


    /**
     * @return array
     * @throws BadRequestHttpException
     * @throws Exception
     * 生成支付参数
     */
    private function applyPaymentData()
    {
        $orderId = Yii::$app->request->getBodyParam('order_id');/*int 商品id*/
        $paymentAmount = Yii::$app->request->getBodyParam('payment_amount');/*int 商品id*/
        $notifyUrl = Yii::$app->request->getBodyParam('notify_url');/*int 商品id*/
        if (empty($orderId) || empty($paymentAmount) || empty($notifyUrl)) {
            throw new BadRequestHttpException(Helper::REQUEST_BAD_PARAMS);
        }

        $this->tradeType = self::TRADE_TYPE_JS_API;
        $this->savePaymentLog($orderId, $paymentAmount, $notifyUrl);

        $params = [
            'body' => '订单支付',
            'out_trade_no' => $orderId,
            'total_fee' => round($paymentAmount * 100),
            'openid' => Yii::$app->user->identity->wx_openid,
        ];
        return $params;
    }

    /**
     * @param  string $orderId
     * @param  float $paymentAmount
     * @param  string $notifyUrl
     * @throws Exception
     * 保存支付信息
     */
    private function savePaymentLog($orderId, $paymentAmount, $notifyUrl)
    {
        $paymentLog = PaymentLog::findOne(['order_id' => $this->order->order_sn]);
        if (!$paymentLog) {
            $paymentLog = new PaymentLog();
        }
        $paymentLog->order_id = $orderId;
        $paymentLog->payment_amount = $paymentAmount;
        $paymentLog->notify_url = $notifyUrl;
        $paymentLog->type = $this->payType;
        $paymentLog->status = PaymentLog::PAYMENT_STATUS_WAITING;
        if (!$paymentLog->save()) {
            throw new Exception(Helper::errorMessageStr($paymentLog->errors));
        }
    }

    private function getPaymentApp()
    {
        $this->initObject();
        $config = [
            'app_id' => $this->appId,
            'mch_id' => $this->mchId,
            'key' => $this->key,
            'cert_path' => $this->certPath,
            'key_path' => $this->keyPath,
            'notify_url' => $this->notifyUrl,
            'trade_type' => $this->tradeType,
            'sandbox' => true, // 设置为 false 或注释则关闭沙箱模式
        ];
        $this->app = Factory::payment($config);
        // 判断当前是否为沙箱模式：
        $this->app->inSandbox();
    }

    /**
     * @var WxPayConfig $wxPayConfig
     */
    private function initObject()
    {
        $path = Yii::getAlias('@backend');
        $wxPayConfig = WxPayConfig::find()->one();
//        $wxConfig = WxConfig::find()->one();
//        switch ($this->payType) {
//            case self::PAY_TYPE_WEB:
//                $this->appId = trim($wxConfig->wx_appId);
//                break;
//            case self::PAY_TYPE_MINI_PROGRAM:
//                $this->appId = trim($wxConfig->mini_program_appId);
//                break;
//        }

        $this->mchId = $wxPayConfig->mch_id;
        $this->certPath = trim($path . $wxPayConfig->cert_path);
        $this->keyPath = trim($path . $wxPayConfig->key_path);
        $this->notifyUrl = Yii::$app->request->hostInfo . '/wx-payment/notify';
    }

    /**
     * @param $unifyParams
     * @return mixed
     * 统一下单
     */
    private function unify($unifyParams)
    {
        $this->getPaymentApp();
        return $this->app->order->unify($unifyParams);
    }


    /**
     * @return array|bool
     * @throws BadRequestHttpException
     * @throws \yii\base\InvalidConfigException
     * @throws \yii\httpclient\Exception
     * 微信支付回调
     */
    public function notify()
    {
        $notifyData = Json::decode(Json::encode(simplexml_load_string(Yii::$app->request->getRawBody(), 'SimpleXMLElement', LIBXML_NOCDATA)));
        Yii::info($notifyData, "notify");
        if (!$this->checkSign($notifyData)) {
            throw new BadRequestHttpException(Helper::REQUEST_BAD_PARAMS);
        }
        $tra = Yii::$app->db->beginTransaction('SERIALIZABLE');
        try {
            if ($notifyData->result_code != 'SUCCESS' || $notifyData->return_code != 'SUCCESS') {
                throw new BadRequestHttpException('result_code or return_code is false');
            }
            $paymentLog = PaymentLog::findOne(['order_id' => $notifyData->out_trade_no]);
            $this->notifyUrl = Yii::$app->request->hostInfo . $paymentLog->notify_url;
            $paymentLog->mch_id = $notifyData->mch_id;
            $paymentLog->wx_refund_id = $notifyData->transaction_id; //交易号
            $paymentLog->status = PaymentLog::PAYMENT_STATUS_SUCCESS;
            if (!$paymentLog->save()) {
                throw new Exception(Helper::errorMessageStr($paymentLog->errors));
            }
            if (!$tra->commit()) {
                throw new Exception('保存数据失败');
            }
            /*转发回调信息*/
            $this->forwardNotify($notifyData, true);

            return ['return_code' => 'SUCCESS', 'return_msg' => 'OK'];//回传成功信息到微信服务器
        } catch (Exception $e) {
            $tra->rollBack();
            $this->forwardNotify($notifyData, false);
            Yii::info($e->getMessage(), 'notify');
            return false;
        } catch (BadRequestHttpException $e) {
            Yii::info($e->getMessage(), 'notify');
            return false;
        }
    }

    /**
     * @param $notifyData
     * @param $status
     * @return bool
     * @throws \yii\base\InvalidConfigException
     * @throws \yii\httpclient\Exception
     * 转发异步回调信息
     */
    private function forwardNotify($notifyData, $status)
    {
        $notify = [
            'notify' => [
                'status' => $status,
                'notify' => $notifyData
            ]
        ];
        $client = new Client();
        $response = $client->createRequest()
            ->setMethod('POST')
            ->setUrl($this->notifyUrl)
            ->addHeaders(['content-type' => 'application/json'])
            ->setContent(Json::encode($notify))
            ->send();
        if ($response->isOk) {
            return true;
        } else {
            return false;
        }
    }


    /**
     * @param $data
     * @return bool
     * 支付成功回调验证签名和支付金额
     */
    public function checkSign($data)
    {
        $this->initObject();
        $notifySign = $data['sign'];
        unset($data['sign']);
        $sign = $this->_sign($data);
        if ($notifySign == $sign) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * @param $arr
     * @return string
     * 微信签名方法
     */
    private function _sign($arr)
    {
        $arr = array_filter($arr);
        ksort($arr);
        $arr['key'] = $this->key;
        $queryString = http_build_query($arr);
        $queryString = urldecode($queryString);
        return strtoupper(md5($queryString));
    }


}