98 lines
4.0 KiB
C#
98 lines
4.0 KiB
C#
using Apimanager_backend.Data;
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using Apimanager_backend.Dtos;
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using Apimanager_backend.Exceptions;
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using Apimanager_backend.Models;
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using Apimanager_backend.Tools;
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using AutoMapper;
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using Microsoft.EntityFrameworkCore;
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namespace Apimanager_backend.Services
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{
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public class PayService : IPayService
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{
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private IMapper _mapper;
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private ILogger<PayService> _logger;
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private ApiContext _context;
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public PayService(IMapper mapper,ILogger<PayService> logger,
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ApiContext apiContext)
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{
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_mapper = mapper;
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_logger = logger;
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_context = apiContext;
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}
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public async Task<bool> BuyAsync(BuyDto dto)
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{
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var transaction = await _context.Database.BeginTransactionAsync();
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try
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{
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var package = await _context.Apipackages.FirstOrDefaultAsync(x => x.Id == dto.ApiPackageId);
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if (package == null) throw new BaseException(4004,"套餐未找到");
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var user = await _context.Users.FirstOrDefaultAsync(x => x.Id == dto.UserId);
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if (user == null) throw new BaseException(2004,"用户不存在");
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if (user.Balance < package.Price)
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{
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throw new BaseException(4002, "支付失败，余额不足。");
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}
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var uPackage = await _context.UserPackages.FirstOrDefaultAsync(x => x.UserId == dto.UserId && x.PackageId == dto.ApiPackageId);
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if (uPackage == null)
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{
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UserPackage userPackage = new UserPackage();
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userPackage.UserId = dto.UserId;
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userPackage.PackageId = dto.ApiPackageId;
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userPackage.RemainingCalls = package.CallLimit;
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userPackage.ExpiryDate = DateTime.Now.AddMonths(1);
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await _context.UserPackages.AddAsync(userPackage);
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}
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else
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{
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var baseDate = uPackage.ExpiryDate > DateTime.Now ? uPackage.ExpiryDate : DateTime.Now;
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_context.UserPackages.Update(uPackage);
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}
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user.Balance -= package.Price;
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_context.Users.Update(user);
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await _context.SaveChangesAsync();
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await transaction.CommitAsync();
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return true;
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}catch(Exception e) when(!(e is BaseException))
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{
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await transaction.RollbackAsync();
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_logger.LogError(e,"购买套餐失败：{Message}",e.Message);
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throw new BaseException(1005,"服务器内部错误");
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}
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catch (BaseException)
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{
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await transaction.RollbackAsync();
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throw;
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}
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}
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public async Task<PayReturnData> CreateEpay(Order order, PaymentConfig paymentConfig,string returnUrl)
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{
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try
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{
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var param = new Dictionary<string, string>();
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param["pid"] = paymentConfig.AppId;
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param["type"] = order.PaymentType.ToString().ToLower();
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param["out_trade_no"] = order.OrderNumber;
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param["notify_url"] = paymentConfig.NotifyUrl ?? "";
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param["return_url"] = returnUrl;
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param["name"] = "余额充值";
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param["money"] = order.Amount.ToString();
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param["clientip"] = "192.168.5.1";
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param["device"] = "pc";
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var res = await EpayHelper.ApiPayAsync(param, paymentConfig.SecretKey, paymentConfig.Url);
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order.ThirdPartyOrderId = res.trade_no;
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_context.Orders.Update(order);
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await _context.SaveChangesAsync();
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return _mapper.Map<PayReturnData>(res);
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}catch(Exception e)
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{
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_logger.LogError(e.Message);
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throw new BaseException(4001,"支付请求无效");
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}
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}
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}
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}
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