49 lines
1.9 KiB
C#
49 lines
1.9 KiB
C#
using MediatR;
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using TakeoutSaaS.Application.App.Merchants.Dto;
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using TakeoutSaaS.Application.App.Merchants.Queries;
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using TakeoutSaaS.Domain.Merchants.Repositories;
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using TakeoutSaaS.Domain.Stores.Repositories;
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using TakeoutSaaS.Domain.Tenants.Repositories;
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using TakeoutSaaS.Shared.Abstractions.Constants;
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using TakeoutSaaS.Shared.Abstractions.Exceptions;
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using TakeoutSaaS.Shared.Abstractions.Tenancy;
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namespace TakeoutSaaS.Application.App.Merchants.Handlers;
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/// <summary>
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/// 商户详情处理器。
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/// </summary>
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public sealed class GetMerchantDetailQueryHandler(
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IMerchantRepository merchantRepository,
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IStoreRepository storeRepository,
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ITenantRepository tenantRepository,
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ITenantProvider tenantProvider)
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: IRequestHandler<GetMerchantDetailQuery, MerchantDetailDto>
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{
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/// <summary>
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/// 查询商户详情，包括证照和合同。
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/// </summary>
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/// <param name="request">查询请求。</param>
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/// <param name="cancellationToken">取消标记。</param>
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/// <returns>商户详情 DTO。</returns>
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public async Task<MerchantDetailDto> Handle(GetMerchantDetailQuery request, CancellationToken cancellationToken)
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{
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// 1. 获取当前租户并查询商户
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var currentTenantId = tenantProvider.GetCurrentTenantId();
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var merchant = await merchantRepository.FindByIdAsync(request.MerchantId, currentTenantId, cancellationToken);
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if (merchant == null)
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{
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throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
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}
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// 2. 查询门店与租户信息
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var stores = await storeRepository.GetByMerchantIdAsync(merchant.Id, merchant.TenantId, cancellationToken);
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var storeDtos = MerchantMapping.ToStoreDtos(stores);
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var tenant = await tenantRepository.FindByIdAsync(merchant.TenantId, cancellationToken);
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// 3. 返回明细 DTO
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return MerchantMapping.ToDetailDto(merchant, tenant?.Name, storeDtos);
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}
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}
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