Files
TakeoutSaaS.TenantApi/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantChangeHistoryQueryHandler.cs

36 lines
1.3 KiB
C#

using MediatR;
using TakeoutSaaS.Application.App.Merchants.Dto;
using TakeoutSaaS.Application.App.Merchants.Queries;
using TakeoutSaaS.Domain.Merchants.Repositories;
using TakeoutSaaS.Shared.Abstractions.Constants;
using TakeoutSaaS.Shared.Abstractions.Exceptions;
using TakeoutSaaS.Shared.Abstractions.Tenancy;
namespace TakeoutSaaS.Application.App.Merchants.Handlers;
/// <summary>
/// 商户变更历史处理器。
/// </summary>
public sealed class GetMerchantChangeHistoryQueryHandler(
IMerchantRepository merchantRepository,
ITenantProvider tenantProvider)
: IRequestHandler<GetMerchantChangeHistoryQuery, IReadOnlyList<MerchantChangeLogDto>>
{
/// <inheritdoc />
public async Task<IReadOnlyList<MerchantChangeLogDto>> Handle(
GetMerchantChangeHistoryQuery request,
CancellationToken cancellationToken)
{
var currentTenantId = tenantProvider.GetCurrentTenantId();
var merchant = await merchantRepository.FindByIdAsync(request.MerchantId, currentTenantId, cancellationToken);
if (merchant == null)
{
throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
}
var logs = await merchantRepository.GetChangeLogsAsync(merchant.Id, merchant.TenantId, request.FieldName, cancellationToken);
return logs.Select(MerchantMapping.ToDto).ToList();
}
}