education/app/Http/Controllers/Api/WechatPay.php

<?php namespace App\Http\Controllers\Api;

use App\Http\Controllers\Api\Api;
use App\Models\Custom;
use App\Models\Orders;
use App\Facades\Servers\Logs\Log;
use EasyWeChat\Factory;
use Illuminate\Http\Request;
use App\Servers\WechatPay\Payment;
use App\Facades\Servers\WechatMini\Mini;
use WeChatPay\Formatter;
use WeChatPay\Crypto\AesGcm;
use WeChatPay\Crypto\Rsa;

/**
 * 微信支付接口
 * 
 * @author JUN
 * 
 * */
class WechatPay extends Api{
    /**
     * 小程序微信支付下单				/api/wechat_pay/pay
     *
     * */
    public function pay(Custom $Custom)
    {
        // 检查登录
        $uid				= $this->checkLogin();
        $code				= request('code','');
        $orderId			= request('order_id','');
        $orderInfo          = Orders::query()->where('id','=',$orderId)->first()->toArray();
        if (empty($orderInfo))
            return		json_send(['code'=>'error','msg'=>'订单不存在','data'=>['id'=>null]]);
        if ($orderInfo['custom_uid'] != $uid)
            return		json_send(['code'=>'error','msg'=>'无权操作','data'=>['id'=>null]]);
        if ($orderInfo['status'] != 1)
            return		json_send(['code'=>'error','msg'=>'订单已支付或取消','data'=>['id'=>null]]);
        //获取openid
        $result			= Mini::jscode2session($code);
        if (!$result['openid']) return json_send(['code'=>'error','msg'=>'获取openid失败','data'=>$result['error']]);
        $openid = $result['openid'];
        $payment = new Payment();
        return $payment->pay(['out_trade_no' => $orderInfo['snowflake_id'],'openid' => $openid,'description' => '开邻智教课程','total_price' => $orderInfo['pay_total']]);
    }
	
	/**
	 * 小程序微信支付回调				/api/wechat_pay/notify
	 * 
	 * */
    public function notify(Custom $Custom)
    {
        $content = file_get_contents("php://input");
        if (!empty($content)) {
            //直接json字符串
            $params = $content;
        } elseif (!empty($_POST)) {
            //直接POST数据
            $params = $_POST;
        } else {
            $params = [];
        }
        $post_data = $params;
        Log::log('notify_wechat_pay', 'post_data:' . $post_data);
        //获取headers参数
        $headers = request()->header();
        Log::log('notify_wechat_pay', '微信支付回调返回headers参数:' . json_encode($headers));

        $inWechatpaySignature = $headers['wechatpay-signature'][0];
        $inWechatpayTimestamp = $headers['wechatpay-timestamp'][0];
        $inWechatpaySerial = $headers['wechatpay-serial'][0];
        $inWechatpayNonce = $headers['wechatpay-nonce'][0];
        $inBody = $post_data;
        Log::log('notify_wechat_pay', 'wechatpay-timestamp:' . $inWechatpayTimestamp);
        $apiv3Key = Config('wechatpay.APIV3');// 在商户平台上设置的APIv3密钥
        // 根据通知的平台证书序列号，查询本地平台证书文件，
        $platformCertificateFilePath = Config('wechatpay.platformCertificate');
        $platformPublicKeyInstance = Rsa::from($platformCertificateFilePath, Rsa::KEY_TYPE_PUBLIC);
        try {
            // 检查通知时间偏移量，允许5分钟之内的偏移
            $timeOffsetStatus = 300 >= abs(Formatter::timestamp() - (int)$inWechatpayTimestamp);
            Log::log('notify_wechat_pay', '时间偏移量:' . $timeOffsetStatus);
            $verifiedStatus = Rsa::verify(
            // 构造验签名串
                Formatter::joinedByLineFeed($inWechatpayTimestamp, $inWechatpayNonce, $inBody),
                $inWechatpaySignature,
                $platformPublicKeyInstance
            );
        }catch (\Exception $e){
            Log::log('notify_wechat_pay', '错误getMessage:' . $e->getMessage());
        }
        Log::log('notify_wechat_pay', '验签:' . $verifiedStatus.'验签inWechatpayTimestamp:' . $inWechatpayTimestamp.'验签verifiedStatus:' . $inWechatpayNonce);
        if ($timeOffsetStatus && $verifiedStatus) {
            // 转换通知的JSON文本消息为PHP Array数组
            $inBodyArray = (array)json_decode($inBody, true);
            // 使用PHP7的数据解构语法，从Array中解构并赋值变量
            ['resource' => [
                'ciphertext' => $ciphertext,
                'nonce' => $nonce,
                'associated_data' => $aad
            ]] = $inBodyArray;
            // 加密文本消息解密
            $inBodyResource = AesGcm::decrypt($ciphertext, $apiv3Key, $nonce, $aad);
            // 把解密后的文本转换为PHP Array数组
            $inBodyResourceArray = (array)json_decode($inBodyResource, true);
            Log::log('notify_wechat_pay', '打印解密后的结果:' . json_encode($inBodyResourceArray));
            Log::log('notify_wechat_pay', '参数:' . $inBodyResourceArray['trade_state'] . '订单号' . $inBodyResourceArray['out_trade_no'] . '微信支付号' . $inBodyResourceArray['transaction_id']);
            if ($inBodyResourceArray['trade_state'] == "SUCCESS") {
                Log::log('notify_wechat_pay', '通知订单');
                //更新订单支付状态
                $orderData = [
                    'pay_time' => time(),
                    'transaction_id'=>$inBodyResourceArray['transaction_id'],
                    'status'=>2,
                ];
                try {
                    $res = Orders::query()->where('snowflake_id','=',$inBodyResourceArray['out_trade_no'])->update($orderData);
                    if (!$res) {
                        Log::log('notify_wechat_pay', '更新订单失败' . json_encode($res));
                        return json_send(['code'=>'FAIL']);
                    }
                }catch (\Exception $e){
                    Log::log('notify_wechat_pay', '更新订单失败' . json_encode($e));
                    return json_send(['code'=>'FAIL']);
                }
                Log::log('notify_wechat_pay', '支付回调完成 通知返回' . json_encode($res));
                return json_send(['code'=>'SUCCESS']);

            }
            return json_send(['code'=>'SUCCESS']);
        }else{
            return json_send(['code'=>'FAIL']);
        }
    }


}