增加Mediat Pip特性，并用实例来做一个demo
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@@ -0,0 +1,44 @@
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using MAX.Framework.Commons;
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using MAX.Framework.Mediation;
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using MediatR;
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using Store.Users.Entities;
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namespace Store.Users.Behaviors;
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/// <summary>锁定积分账户并检查消费额度，不依赖商铺信息。</summary>
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public sealed class AccountConsumptionBehavior<TRequest, TResponse>(
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UnitOfWorkExecutionContext executionContext)
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: IPipelineBehavior<TRequest, TResponse>
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where TRequest : class, IRequest<TResponse>, IAccountConsumptionRequest
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{
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public async Task<TResponse> Handle(TRequest request, CancellationToken cancellationToken,
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RequestHandlerDelegate<TResponse> next)
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{
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cancellationToken.ThrowIfCancellationRequested();
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if (string.IsNullOrWhiteSpace(request.UserName))
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throw new AppException("用户名不能为空");
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var userName = request.UserName.Trim();
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var user = await executionContext.Orm.Select<UserEntity>().Where(a => a.UserName == userName)
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.ForUpdate().FirstAsync(cancellationToken)
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?? throw new AppException("不存在的用户");
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var quote = request.CalculateConsumption(user);
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if (quote.Amount <= 0 || quote.UnitPrice <= 0)
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throw new AppException("消费金额必须大于0");
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if (user.Points < quote.Amount)
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throw new AppException("余额不足");
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lock (request)
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{
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if (request.ConsumptionContext != null)
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throw new InvalidOperationException("同一个消费命令不能同时执行");
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request.ConsumptionContext = new AccountConsumptionContext(user, quote);
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}
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try
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{
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return await next();
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}
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finally
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{
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request.ConsumptionContext = null;
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}
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}
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}
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@@ -0,0 +1,23 @@
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using Store.Users.Entities;
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using YourNamespace;
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namespace Store.Users.Behaviors;
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/// <summary>需要账户积分消费检查的请求。</summary>
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public interface IAccountConsumptionRequest
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{
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string UserName { get; }
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AccountConsumptionContext? ConsumptionContext { get; set; }
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ConsumptionQuote CalculateConsumption(UserEntity user);
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}
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/// <summary>需要检查商铺归属的请求，与是否消费无关。</summary>
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public interface IShopOwnershipRequest
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{
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string UserName { get; }
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string ShopId { get; }
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ShopEntity? OwnedShop { get; set; }
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}
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public sealed record ConsumptionQuote(decimal Amount, decimal UnitPrice);
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public sealed record AccountConsumptionContext(UserEntity User, ConsumptionQuote Quote);
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@@ -0,0 +1,43 @@
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using MAX.Framework.Commons;
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using MAX.Framework.Mediation;
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using MediatR;
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using YourNamespace;
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namespace Store.Users.Behaviors;
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/// <summary>独立检查商铺归属；事务中执行时锁定商铺，读取场景可不启用事务。</summary>
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public sealed class ShopOwnershipBehavior<TRequest, TResponse>(
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IFreeSql freeSql, UnitOfWorkExecutionContext executionContext) : IPipelineBehavior<TRequest, TResponse>
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where TRequest : class, IRequest<TResponse>, IShopOwnershipRequest
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{
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public async Task<TResponse> Handle(TRequest request, CancellationToken cancellationToken,
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RequestHandlerDelegate<TResponse> next)
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{
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cancellationToken.ThrowIfCancellationRequested();
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if (string.IsNullOrWhiteSpace(request.UserName) || string.IsNullOrWhiteSpace(request.ShopId))
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throw new AppException("用户名和商铺ID不能为空");
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var userName = request.UserName.Trim();
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var shopId = request.ShopId.Trim();
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var orm = executionContext.IsActive ? executionContext.Orm : freeSql;
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var query = orm.Select<ShopEntity>().Where(a => a.ShopId == shopId && a.UserName == userName);
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if (executionContext.IsActive) query = query.ForUpdate();
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var shop = await query.FirstAsync(cancellationToken)
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?? throw new AppException("不存在的商铺或该商铺不属于当前用户");
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if (!string.Equals(shop.UserName, userName, StringComparison.OrdinalIgnoreCase))
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throw new AppException("该商铺不属于当前用户");
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lock (request)
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{
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if (request.OwnedShop != null)
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throw new InvalidOperationException("同一个商铺操作命令不能同时执行");
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request.OwnedShop = shop;
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}
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try
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{
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return await next();
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}
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finally
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{
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request.OwnedShop = null;
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}
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}
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}
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@@ -1,81 +1,146 @@
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//using MediatR;
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//using Store.Framework.Models;
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//using Store.Shops.Contracts;
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//using Store.Users.Contracts.Dtos;
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//using Store.Users.Entities;
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//using Store.Users.Repositories;
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//using System;
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//using System.Collections.Generic;
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//using System.Text;
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using System.ComponentModel.DataAnnotations;
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using YourNamespace;
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using MAX.Framework.Mediation;
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using MAX.Core.Mediation;
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using Store.Users.Behaviors;
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using MAX.Core.Helpers;
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using MAX.Framework.Commons;
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using MediatR;
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using Store.Users.Contracts.Dtos;
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using Store.Users.Entities;
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//namespace Store.Users.Commands
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//{
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// /// <summary>
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// /// 商铺续费
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// /// </summary>
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// /// <param name="UserName"></param>
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// /// <param name="ShopId"></param>
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// /// <param name="RenewDuration"></param>
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// internal record class ShopRenewCommand(string UserName, string ShopId, int RenewDuration) : IRequest<ShopRenewResponse>;
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// internal class ShopRenewCommandHandler : IRequestHandler<ShopRenewCommand, ShopRenewResponse>
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// {
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// private readonly IUserRepository _userRepository;
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// private readonly IShopQueryService _shopQueryService;
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namespace Store.Users.Commands;
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// public ShopRenewCommandHandler(IUserRepository userRepository, IShopQueryService shopQueryService)
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// {
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// _userRepository = userRepository;
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// _shopQueryService = shopQueryService;
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// }
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// async Task<ShopRenewResponse> IRequestHandler<ShopRenewCommand, ShopRenewResponse>.Handle(ShopRenewCommand request, CancellationToken cancellationToken)
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// {
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// ShopRenewResponse response = new ShopRenewResponse();
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// var user = await _userRepository.GetUser(request.UserName);
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// int shopPointsPerMonth = Math.Max(30, user.ShopPointsPerMonth);
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// int deltaPoints = shopPointsPerMonth * request.RenewDuration;
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// int newPoints = (int)user.Points - deltaPoints;
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// DateTime expireTime = _shopQueryService.GetExpireTime(request.ShopId);
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/// <summary>商铺续费，续费时长单位为月。</summary>
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[MediatRBehavior(typeof(ValidationBehavior<,>))]
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[MediatRBehavior(typeof(TransactionBehavior<,>))]
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[MediatRBehavior(typeof(AccountConsumptionBehavior<,>))]
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[MediatRBehavior(typeof(ShopOwnershipBehavior<,>))]
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public sealed record ShopRenewCommand(string UserName, string ShopId, int RenewDuration, string? Remark = null)
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: IRequest<ShopRenewResponse>, IValidatableRequest, IAccountConsumptionRequest, IShopOwnershipRequest
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{
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// 由消费管道建立，仅在当前事务执行期间有效。
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AccountConsumptionContext? IAccountConsumptionRequest.ConsumptionContext { get; set; }
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ShopEntity? IShopOwnershipRequest.OwnedShop { get; set; }
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void IValidatableRequest.Validate()
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{
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if (string.IsNullOrWhiteSpace(UserName) || UserName.Trim().Length > 20)
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throw new ValidationException("用户名不能为空且长度不能超过20个字符");
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if (string.IsNullOrWhiteSpace(ShopId) || ShopId.Trim().Length > 50)
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throw new ValidationException("店铺ID不能为空且长度不能超过50个字符");
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if (RenewDuration is < 1 or > 120)
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throw new ValidationException("续费时长必须为1-120个月");
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if (Remark?.Trim().Length > 255)
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throw new ValidationException("备注长度不能超过255个字符");
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}
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ConsumptionQuote IAccountConsumptionRequest.CalculateConsumption(UserEntity user)
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{
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if (RenewDuration is < 1 or > 120)
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throw new AppException("续费时长必须为1-120个月");
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int price = Math.Max(30, user.ShopPointsPerMonth);
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return new ConsumptionQuote((decimal)price * RenewDuration, price);
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}
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}
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internal sealed class ShopRenewCommandHandler(UnitOfWorkExecutionContext executionContext)
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: IRequestHandler<ShopRenewCommand, ShopRenewResponse>
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{
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public async Task<ShopRenewResponse> Handle(ShopRenewCommand request, CancellationToken cancellationToken)
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{
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ArgumentNullException.ThrowIfNull(request);
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cancellationToken.ThrowIfCancellationRequested();
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var userName = request.UserName.Trim();
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var shopId = request.ShopId.Trim();
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var remark = string.IsNullOrWhiteSpace(request.Remark) ? null : request.Remark.Trim();
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var context = ((IAccountConsumptionRequest)request).ConsumptionContext
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?? throw new InvalidOperationException("续费命令必须通过账户消费管道执行");
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var orm = executionContext.Orm;
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var user = context.User;
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var shop = ((IShopOwnershipRequest)request).OwnedShop
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?? throw new InvalidOperationException("续费命令必须通过商铺归属管道执行");
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decimal pointsPerMonth = context.Quote.UnitPrice;
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decimal cost = context.Quote.Amount;
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decimal newPoints = user.Points - cost;
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var now = DateTime.Now;
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var currentExpire = await orm.Select<ShopExpireEntity>().Where(a => a.ShopId == shopId)
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.FirstAsync(cancellationToken);
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var expireBase = now;
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if (currentExpire is { ExpireTime: > 0 })
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{
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var currentTime = DateHelper.ConvertFromUnixTimestampInSeconds(currentExpire.ExpireTime);
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if (currentTime > expireBase)
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expireBase = currentTime;
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}
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int newExpireTime = CalculateNewExpireTime(expireBase, request.RenewDuration);
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// if (currentExpire != null && currentExpire.ExpireTime > 0)
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// {
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// DateTime currentExpireTime = TimeUtils.StampToDateTime(currentExpire.ExpireTime);
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// if (currentExpireTime > expireBaseTime)
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// {
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// expireBaseTime = currentExpireTime;
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// }
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// }
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int affected = await orm.Update<UserEntity>().Set(a => a.Points, newPoints)
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.Where(a => a.Id == user.Id && a.Points == user.Points)
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.ExecuteAffrowsAsync(cancellationToken);
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if (affected != 1)
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throw new AppException("账户已发生改变，请刷新账户后重新操作");
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// int newExpireTime = CalculateNewExpireTime(expireBaseTime, request.RenewDuration);
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for (int i = 0; i < request.RenewDuration; i++)
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{
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var record = new UserPointsRecordEntity
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{
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OptionType = "续费",
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OperatorType = "用户",
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OperatorName = userName,
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UserName = userName,
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UserNick = user.NickName,
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DeltaPoints = pointsPerMonth,
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NewPoints = user.Points - (decimal)pointsPerMonth * (i + 1),
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ShopId = shop.ShopId,
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ShopAccount = shop.ShopAccount,
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Remark = remark,
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AddTime = now.AddSeconds(i)
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};
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if (await orm.Insert(record).ExecuteAffrowsAsync(cancellationToken) != 1)
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throw new AppException("新增操作记录失败，请稍候重试");
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}
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if (currentExpire == null)
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{
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affected = await orm.Insert(new ShopExpireEntity
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{
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ShopId = shopId,
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ExpireTime = newExpireTime,
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AddTime = now,
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MdyTime = now
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}).ExecuteAffrowsAsync(cancellationToken);
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}
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else
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{
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affected = await orm.Update<ShopExpireEntity>()
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.Set(a => a.ExpireTime, newExpireTime).Set(a => a.MdyTime, now)
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.Where(a => a.Id == currentExpire.Id && a.ExpireTime == currentExpire.ExpireTime)
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.ExecuteAffrowsAsync(cancellationToken);
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}
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if (affected != 1)
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throw new AppException("更新商铺过期时间失败，请刷新店铺后重新操作");
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cancellationToken.ThrowIfCancellationRequested();
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return new ShopRenewResponse { ShopId = shopId, UserPoints = newPoints, ExpireTime = newExpireTime };
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}
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// response.ShopId = request.ShopId;
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// response.UserPoints = newPoints;
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// response.ExpireTime = newExpireTime;
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// return response;
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// }
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// private int CalculateNewExpireTime(DateTime expireBaseTime, int renewDuration)
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// {
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// DateTime newExpireDateTime;
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// try
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// {
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// newExpireDateTime = expireBaseTime.AddMonths(renewDuration);
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// }
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// catch (ArgumentOutOfRangeException)
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// {
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// throw new InvalidOperationException("续费时长超出允许范围");
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// }
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// if (newExpireDateTime > TimeUtils.StampToDateTime(int.MaxValue))
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// {
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// throw new InvalidOperationException("续费时间超出系统支持范围");
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// }
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// return TimeUtils.DateTimeToTimestampSeconds(newExpireDateTime);
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// }
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// }
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//}
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private static int CalculateNewExpireTime(DateTime expireBase, int duration)
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{
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DateTime newExpireDate;
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try
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{
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newExpireDate = expireBase.AddMonths(duration);
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}
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catch (ArgumentOutOfRangeException)
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{
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throw new AppException("续费时长超出允许范围");
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}
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long timestamp = DateHelper.GetUnixTimestampInSeconds(newExpireDate);
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if (timestamp > int.MaxValue || timestamp < 0)
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throw new AppException("续费时间超出系统支持范围");
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return (int)timestamp;
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}
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}
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@@ -1,29 +1,45 @@
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using Asp.Versioning;
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using Asp.Versioning;
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using MAX.Framework.Security;
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using MediatR;
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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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using Store.Users.Commands;
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using Store.Users.Contracts;
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using Store.Users.Contracts.Dtos;
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using Store.Users.Services;
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using System;
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using System.Collections.Generic;
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using System.Text;
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using Store.Users.Dtos;
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namespace Store.Users.Controllers
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namespace Store.Users.Controllers;
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[ApiController]
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[ApiVersionNeutral]
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[Route("user/[action]")]
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public class UserController : ControllerBase
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{
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[ApiController]
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[ApiVersionNeutral]
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[Route("user/[action]")]
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public class UserController : ControllerBase
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{
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private readonly IUserQueryService _userQuery;
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private readonly IUserQueryService _userQuery;
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private readonly IMediator _mediator;
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private readonly ICurrentUser _currentUser;
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public UserController(IUserQueryService userQuery)
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{
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_userQuery = userQuery;
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}
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[HttpGet]
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public async Task<UserInfo> GetUser(string userName)
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{
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return await _userQuery.GetUser(userName);
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}
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}
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public UserController(IUserQueryService userQuery, IMediator mediator, ICurrentUser currentUser)
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{
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_userQuery = userQuery;
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_mediator = mediator;
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_currentUser = currentUser;
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}
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[HttpGet]
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public async Task<UserInfo> GetUser(string userName)
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{
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return await _userQuery.GetUser(userName);
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}
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/// <summary>使用当前登录用户的积分为商铺续费。</summary>
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[HttpPost]
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public Task<ShopRenewResponse> ShopRenew([FromBody] ShopRenewRequest request, CancellationToken cancellationToken)
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{
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if (!_currentUser.IsAuthenticated || string.IsNullOrWhiteSpace(_currentUser.UserName))
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throw new UnauthorizedAccessException();
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return _mediator.Send(new ShopRenewCommand(
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_currentUser.UserName, request.ShopId, request.RenewDuration, request.Remark), cancellationToken);
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}
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}
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@@ -1,4 +1,4 @@
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using System;
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using System;
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using System.Collections.Generic;
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using System.Text;
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@@ -8,6 +8,6 @@ namespace Store.Users.Contracts.Dtos
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{
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public string ShopId { get; set; }
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public int ExpireTime { get; set; }
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public int UserPoints { get; set; }
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public decimal UserPoints { get; set; }
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}
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}
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@@ -1,4 +1,7 @@
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using MAX.Core.DependencyInjection;
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using MediatR;
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using Store.Users.Commands;
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using Store.Users.Contracts.Dtos;
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using MAX.Core.DependencyInjection;
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using MAX.Core.Interfaces;
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namespace Store.Users
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@@ -13,6 +16,7 @@ namespace Store.Users
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public void Register(IServiceRegistrar registrar)
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{
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registrar.RegisterTransient<IRequestHandler<ShopRenewCommand, ShopRenewResponse>, ShopRenewCommandHandler>();
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}
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public void Start(IServiceProvider serviceProvider)
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@@ -1,4 +1,4 @@
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<Project Sdk="Microsoft.NET.Sdk">
|
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<Project Sdk="Microsoft.NET.Sdk">
|
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|
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<PropertyGroup>
|
||||
|
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@@ -7,6 +7,7 @@
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<ItemGroup>
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<ProjectReference Include="..\..\Store.Framework\Store.Framework.csproj" />
|
||||
<ProjectReference Include="..\Store.Shops.Contracts\Store.Shops.Contracts.csproj" />
|
||||
<ProjectReference Include="..\Store.Shops\Store.Shops.csproj" />
|
||||
<ProjectReference Include="..\Store.Users.Contracts\Store.Users.Contracts.csproj" />
|
||||
</ItemGroup>
|
||||
|
||||
|
||||
Reference in new issue
Block a user