72 lines
2.8 KiB
C#
72 lines
2.8 KiB
C#
using MediatR;
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using TakeoutSaaS.Application.App.Deliveries.Dto;
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using TakeoutSaaS.Application.App.Deliveries.Queries;
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using TakeoutSaaS.Domain.Deliveries.Repositories;
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using TakeoutSaaS.Shared.Abstractions.Results;
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using TakeoutSaaS.Shared.Abstractions.Tenancy;
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namespace TakeoutSaaS.Application.App.Deliveries.Handlers;
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/// <summary>
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/// 配送单列表查询处理器。
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/// </summary>
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public sealed class SearchDeliveryOrdersQueryHandler(
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IDeliveryRepository deliveryRepository,
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ITenantProvider tenantProvider)
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: IRequestHandler<SearchDeliveryOrdersQuery, PagedResult<DeliveryOrderDto>>
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{
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/// <inheritdoc />
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public async Task<PagedResult<DeliveryOrderDto>> Handle(SearchDeliveryOrdersQuery request, CancellationToken cancellationToken)
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{
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// 1. 获取当前租户标识
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var tenantId = tenantProvider.GetCurrentTenantId();
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// 2. 查询配送单列表（租户隔离）
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var orders = await deliveryRepository.SearchAsync(tenantId, request.Status, request.OrderId, cancellationToken);
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// 3. 本地排序
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var sorted = ApplySorting(orders, request.SortBy, request.SortDescending);
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// 4. 本地分页
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var paged = sorted
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.Skip((request.Page - 1) * request.PageSize)
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.Take(request.PageSize)
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.ToList();
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// 5. 映射 DTO
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var items = paged.Select(order => new DeliveryOrderDto
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{
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Id = order.Id,
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TenantId = order.TenantId,
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OrderId = order.OrderId,
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Provider = order.Provider,
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ProviderOrderId = order.ProviderOrderId,
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Status = order.Status,
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DeliveryFee = order.DeliveryFee,
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CourierName = order.CourierName,
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CourierPhone = order.CourierPhone,
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DispatchedAt = order.DispatchedAt,
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PickedUpAt = order.PickedUpAt,
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DeliveredAt = order.DeliveredAt,
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FailureReason = order.FailureReason,
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CreatedAt = order.CreatedAt
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}).ToList();
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// 6. 返回分页结果
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return new PagedResult<DeliveryOrderDto>(items, request.Page, request.PageSize, orders.Count);
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}
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private static IOrderedEnumerable<Domain.Deliveries.Entities.DeliveryOrder> ApplySorting(
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IReadOnlyCollection<Domain.Deliveries.Entities.DeliveryOrder> orders,
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string? sortBy,
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bool sortDescending)
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{
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return sortBy?.ToLowerInvariant() switch
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{
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"status" => sortDescending ? orders.OrderByDescending(x => x.Status) : orders.OrderBy(x => x.Status),
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"provider" => sortDescending ? orders.OrderByDescending(x => x.Provider) : orders.OrderBy(x => x.Provider),
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_ => sortDescending ? orders.OrderByDescending(x => x.CreatedAt) : orders.OrderBy(x => x.CreatedAt)
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};
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}
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}
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