WingPaymentService/Service/PaymentService.cs

using System;
using System.Web;
using WingServerCommon.Service;
using WingInterfaceLibrary.Interface;
using System.Threading.Tasks;
using WingInterfaceLibrary.DTO.Payment;
using WingInterfaceLibrary.Request.Payment;
using WingInterfaceLibrary.Result;
using System.Collections.Generic;
using WingInterfaceLibrary.Interface.DBInterface;
using WingInterfaceLibrary.DB.Request;
using WingServerCommon.Log;
using WingPaymentService.Common;
using WingInterfaceLibrary.Enum;
using WingInterfaceLibrary.Request;
using WingPaymentService.Common.WeChat;

namespace WingPaymentService.Service
{
    public class PaymentService : JsonRpcService, IPaymentService
    {
        private IAuthenticationService _authenticationService;
        private IPaymentDBService _paymentDBService;
        private AlipayCommon _alipayCommon;
        private WeChatCommon _weChatCommon;
        public override void Load(JsonRpcClientPool jsonRpcClientPool)
        {
            _alipayCommon = new AlipayCommon();
            _weChatCommon = new WeChatCommon();
            base.Load(jsonRpcClientPool);
            _paymentDBService = GetProxy<IPaymentDBService>();
            _authenticationService = GetProxy<IAuthenticationService>();
        }
        /// <summary>
        /// 购买接口
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task<CreateOrderResultDTO> CreateOrderAsync(CreateOrderRequest request)
        {
            var dbRequest = new CreateOrderDBRequest();
            dbRequest.OrderAmount = request.OrderAmount;
            dbRequest.OrderTitle = request.OrderTitle;
            dbRequest.OrderType = request.OrderType;
            if (string.IsNullOrWhiteSpace(request.OrderUserCode))
            {
                request.OrderUserCode = await ValidateTokenAsync(request.Token);
                if (string.IsNullOrWhiteSpace(request.OrderUserCode))
                {
                    ThrowCustomerException(CustomerRpcCode.UserNotFind, "UserNotFind");
                }
            }
            dbRequest.OrderUserCode = request.OrderUserCode;
            dbRequest.PayStatus = PayStatusEnum.NoPay;
            dbRequest.PayTime = DateTime.UtcNow;
            dbRequest.ProductCode = request.ProductCode;
            dbRequest.TPORderCode = request.TPORderCode;
            return await _paymentDBService.CreateOrderAsync(dbRequest);
        }

        /// <summary>
        /// 订单详情接口
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task<OrderDetailDTO> GetOrderDetailAsync(GetOrderDetailRequest request)
        {
            return await _paymentDBService.GetOrderDetailAsync(new GetOrderDetailDBRequest { OrderCode = request.OrderCode });
        }

        /// <summary>
        /// 订单列表接口
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task<PageResult<OrderDetailDTO>> GetOrderPagesAsync(GetOrderPagesRequest request)
        {
            return await _paymentDBService.GetOrderPagesAsync(new GetOrderPagesDBRequest
            {
                CurrentPage = request.PageIndex,
                PageSize = request.PageSize,
                KeyWord = request.KeyWord
            });
        }

        /// <summary>
        /// 发起支付请求
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task<PayInfoDTO> GoToPayAsync(GoToPayRequest request)
        {
            if (!string.IsNullOrWhiteSpace(request.OrderCode))
            {
                var orderInfo = await _paymentDBService.GetOrderDetailAsync(new GetOrderDetailDBRequest { OrderCode = request.OrderCode });
                if (orderInfo != null && orderInfo.OrderAmount > 0)
                {
                    string payUrl = string.Empty;
                    switch (request.PayType)
                    {
                        case PayTypeEnum.Alipay_PAGE:
                            payUrl = _alipayCommon.AlipayPagePay(orderInfo.OrderTitle, orderInfo.OrderAmount, orderInfo.Code);
                            break;
                        case PayTypeEnum.Alipay_WAP:
                            payUrl = _alipayCommon.AlipayWapPay(orderInfo.OrderTitle, orderInfo.OrderAmount, orderInfo.Code);
                            break;
                        case PayTypeEnum.WeChat_PAGE:
                            payUrl = await _weChatCommon.GetWebPayUrlAsync(orderInfo.OrderTitle, orderInfo.OrderAmount, orderInfo.Code, string.Empty, string.Empty);
                            break;
                        case PayTypeEnum.WeChat_WAP:
                            payUrl = await _weChatCommon.GetWapPayUrlAsync(orderInfo.OrderTitle, orderInfo.OrderAmount, orderInfo.Code, string.Empty, string.Empty);
                            break;
                    }
                    if (!string.IsNullOrWhiteSpace(payUrl))
                    {
                        return new PayInfoDTO
                        {
                            IsSuccess = true,
                            PayUrl = payUrl
                        };
                    }
                }
            }
            return new PayInfoDTO
            {
                IsSuccess = false,
                PayUrl = string.Empty
            };
        }

        /// <summary>
        /// 支付后回调
        /// </summary>
        /// <param name="src">来源</param>
        /// <param name="request">请求信息</param>
        /// <returns></returns>
        public async Task<PayCallbackDTO> PayCallbackAsync(string src, string request)
        {
            try
            {
                switch (src)
                {
                    case "Alipay":
                        await AlipayCallback(request);
                        break;
                    case "WeChat":
                        await WeChatCallback(request);
                        break;
                }

                return new PayCallbackDTO { IsSuccess = true };
            }
            catch (Exception ex)
            {
                Logger.WriteLineError($"PayCallback error {ex}");
                return new PayCallbackDTO { IsSuccess = false };
            }
        }

        private async Task<bool> AlipayCallback(string request)
        {
            Dictionary<string, string> keyValuePairs = new Dictionary<string, string>();
            var uriParams = HttpUtility.UrlDecode(request);
            if (uriParams != null)
            {
                var paramsArr = uriParams.Split('&');
                foreach (string param in paramsArr)
                {
                    var keyValue = param.Split('=');
                    var key = keyValue[0];
                    var value = keyValue.Length > 1 ? keyValue[1] : string.Empty;
                    keyValuePairs.Add(key, value);
                }
            }
            var payOutTradeNo = keyValuePairs.GetValueOrDefault("out_trade_no");
            var totalAmount = keyValuePairs.GetValueOrDefault("total_amount");
            var paymentRecordCode = keyValuePairs.GetValueOrDefault("pay_record_code");
            var payStatus = keyValuePairs.GetValueOrDefault("trade_status") == "TRADE_SUCCESS" ? WingInterfaceLibrary.Enum.PayStatusEnum.Paid : WingInterfaceLibrary.Enum.PayStatusEnum.NoPay;
            await UpdatePayStatus(paymentRecordCode, payStatus, uriParams);
            if(payStatus == PayStatusEnum.Paid)
            {
                return await UpdateOrderStatus(payOutTradeNo, payStatus, totalAmount);
            }
            return false;
        }

        private async Task<bool> WeChatCallback(string request)
        {
            //转换数据格式, 取消签名校验，签名调用方自己调用，兼容支付和退款
            WxPayData data = new WxPayData();
            var paramValues = data.FromXml(request,false);//回调不用签名校验
            var payOutTradeNo = paramValues.GetValueOrDefault("out_trade_no")?.ToString();
            var totalAmount = (double.Parse(paramValues.GetValueOrDefault("total_fee")?.ToString())/100).ToString("0.00");
            var payRecordCode = paramValues.GetValueOrDefault("pay_record_code")?.ToString();
            var payStatus = paramValues.GetValueOrDefault("result_code")?.ToString() == "SUCCESS" ? PayStatusEnum.Paid : PayStatusEnum.NoPay;
            await UpdatePayStatus(payRecordCode, payStatus, request);
            if(payStatus == PayStatusEnum.Paid)
            {
                return await UpdateOrderStatus(payOutTradeNo, payStatus, totalAmount);
            }
            return false;
        }

        private async Task<bool> UpdateOrderStatus(string orderCode, PayStatusEnum payStatus, string totalAmount)
        {
            var orderInfo = await _paymentDBService.GetOrderDetailAsync(new GetOrderDetailDBRequest{ OrderCode = orderCode});
            if(orderInfo.OrderAmount.ToString("0.00") != totalAmount)
            {
                Logger.WriteLineError($"OrderCode:{orderInfo.Code} pay status {payStatus}, total amount error, order amount {orderInfo.OrderAmount.ToString("0.00")} paid amount {totalAmount}");
                return false;
            }
            var result = await _paymentDBService.UpdateOrderAsync(new UpdateOrderDBRequest{
                OrderCode = orderCode,
                PayStatus = payStatus
            });
            return result.IsSuccess;
        }

        private async Task<UpdatePaymentRecordResultDTO> UpdatePayStatus(string paymentRecordCode, PayStatusEnum payStatus, string payResContent)
        {
            var updateRecordInfo = new UpdatePaymentRecordDBRequest();
            updateRecordInfo.Code = paymentRecordCode;
            updateRecordInfo.PayTime = DateTime.UtcNow;
            updateRecordInfo.PayStatus = payStatus;
            updateRecordInfo.PayResContent = payResContent;
            return await _paymentDBService.UpdatePaymentRecordAsync(updateRecordInfo);
        }
        /// <summary>
        /// 客户端用户验证
        /// </summary>
        /// <param name="request"></param>
        /// <returns>User Code</returns>
        private async Task<string> ValidateTokenAsync(string token)
        {
            var request = new TokenRequest() { Token = token };
            var result = await _authenticationService.GetTokenAsync(request);
            return result.ClientId; //return User code 
        }

        private void ThrowCustomerException(CustomerRpcCode customerRpcCodeEnum, string msg)
        {
            ThrowRpcException((int)customerRpcCodeEnum, msg);
        }
    }
}