37 lines
1.2 KiB
C#
37 lines
1.2 KiB
C#
using MediatR;
|
|
using TakeoutSaaS.Application.App.Billings.Commands;
|
|
using TakeoutSaaS.Domain.Tenants.Repositories;
|
|
using TakeoutSaaS.Shared.Abstractions.Constants;
|
|
using TakeoutSaaS.Shared.Abstractions.Exceptions;
|
|
|
|
namespace TakeoutSaaS.Application.App.Billings.Handlers;
|
|
|
|
/// <summary>
|
|
/// 取消账单命令处理器。
|
|
/// </summary>
|
|
public sealed class CancelBillingCommandHandler(
|
|
ITenantBillingRepository billingRepository)
|
|
: IRequestHandler<CancelBillingCommand, Unit>
|
|
{
|
|
/// <inheritdoc />
|
|
public async Task<Unit> Handle(CancelBillingCommand request, CancellationToken cancellationToken)
|
|
{
|
|
// 1. 查询账单
|
|
var billing = await billingRepository.FindByIdAsync(request.BillingId, cancellationToken);
|
|
if (billing is null)
|
|
{
|
|
throw new BusinessException(ErrorCodes.NotFound, "账单不存在");
|
|
}
|
|
|
|
// 2. 取消账单（领域规则校验在实体方法内）
|
|
billing.Cancel(request.Reason);
|
|
|
|
// 3. 持久化
|
|
await billingRepository.UpdateAsync(billing, cancellationToken);
|
|
await billingRepository.SaveChangesAsync(cancellationToken);
|
|
|
|
return Unit.Value;
|
|
}
|
|
}
|
|
|