49 lines
1.7 KiB
C#
49 lines
1.7 KiB
C#
using MediatR;
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using TakeoutSaaS.Application.App.Stores;
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using TakeoutSaaS.Application.App.Stores.Dto;
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using TakeoutSaaS.Application.App.Stores.Queries;
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using TakeoutSaaS.Domain.Stores.Entities;
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using TakeoutSaaS.Domain.Stores.Repositories;
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using TakeoutSaaS.Shared.Abstractions.Constants;
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using TakeoutSaaS.Shared.Abstractions.Exceptions;
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namespace TakeoutSaaS.Application.App.Stores.Handlers;
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/// <summary>
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/// 获取门店费用配置处理器。
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/// </summary>
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public sealed class GetStoreFeeQueryHandler(
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IStoreRepository storeRepository)
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: IRequestHandler<GetStoreFeeQuery, StoreFeeDto?>
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{
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/// <inheritdoc />
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public async Task<StoreFeeDto?> Handle(GetStoreFeeQuery request, CancellationToken cancellationToken)
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{
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// 1. 校验门店存在
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var store = await storeRepository.FindByIdAsync(request.StoreId, null, cancellationToken);
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if (store is null)
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{
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throw new BusinessException(ErrorCodes.NotFound, "门店不存在");
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}
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// 2. (空行后) 查询费用配置
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var fee = await storeRepository.GetStoreFeeAsync(request.StoreId, null, cancellationToken);
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if (fee is null)
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{
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var fallback = new StoreFee
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{
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StoreId = request.StoreId,
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MinimumOrderAmount = 0m,
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BaseDeliveryFee = 0m,
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PackagingFeeMode = Domain.Stores.Enums.PackagingFeeMode.Fixed,
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OrderPackagingFeeMode = Domain.Stores.Enums.OrderPackagingFeeMode.Fixed,
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FixedPackagingFee = 0m
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};
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return StoreMapping.ToDto(fallback);
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}
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// 3. (空行后) 返回结果
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return StoreMapping.ToDto(fee);
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}
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}
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