antshop/api/logic/WXPaymentLogic.php

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

namespace api\logic;

use backend\modules\shop\models\ars\Config;
use Yii;
use backend\modules\shop\models\ars\Order;

class WXPaymentLogic extends \yii\base\BaseObject
{
    const PAY_TYPE_WEB = 1;
    const PAY_TYPE_MINI_PROGRAM = 2;

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


    public function wxPayment()
    {
        $this->payType = self::PAY_TYPE_WEB;
        $data = $this->applyPaymentData();
        $this->unify($data);
    }

    /**
     * @return array
     */
    private function applyPaymentData()
    {
        $orderId = Yii::$app->request->getBodyParam('orderId');/*int 商品id*/
        if (empty($orderId)) {
            throw new BadRequestHttpException(Helper::REQUEST_BAD_PARAMS);
        }
        $order = Order::find()
            ->where(['id' => $orderId, 'user_id' => Yii::$app->user->getId()])
            ->one();
        if (empty($order)) {
            throw new NotFoundHttpException('未找到该订单');
        }
        $data = [
            'body' => '订单支付',
            'out_trade_no' => $order->order_sn,
            'total_fee' => round($order->pay_fee * 100),
            'openid' => Yii::$app->user->identity->wx_openid ?? '',
        ];
        $this->tradeType = 'JSAPI';
        $this->order = $order;
        return $data;
    }

    private function getPaymentApp()
    {
        $this->_config();
        $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
        ];
        $this->app = Factory::payment($config);
    }

    private function _config()
    {
        $path = Yii::getAlias('@backend');
        $config = Config::find()->one();
        switch ($this->payType) {
            case self::PAY_TYPE_WEB:
                $this->appId = trim($config->wx_appId);
                $this->mchId = trim($config->wx_mchId);
                $this->key = trim($config->wx_key);
                $this->certPath = trim($path . $config->wx_certPath);
                $this->keyPath = trim($path . $config->wx_keyPath);
                break;
            case self::PAY_TYPE_MINI_PROGRAM:
                $this->appId = trim($config->mini_program_appId);
                $this->mchId = trim($config->mini_program_mchId);
                $this->key = trim($config->mini_program_key);
                $this->certPath = trim($path . $config->mini_program_certPath);
                $this->keyPath = trim($path . $config->mini_program_keyPath);
                break;
        }
        $this->notifyUrl = $config->api_domain_name . $this->order->notify_url;

    }


    private function unify($data)
    {
        $this->getPaymentApp();
        return $this->app->order->unify($data);
    }



}