feat: 列表接口分页排序与验证

src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/SearchDeliveryOrdersQueryHandler.cs

@@ -2,6 +2,7 @@ using MediatR;
 using TakeoutSaaS.Application.App.Deliveries.Dto;
 using TakeoutSaaS.Application.App.Deliveries.Queries;
 using TakeoutSaaS.Domain.Deliveries.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Results;
 using TakeoutSaaS.Shared.Abstractions.Tenancy;
 
 namespace TakeoutSaaS.Application.App.Deliveries.Handlers;
@@ -12,13 +13,13 @@ namespace TakeoutSaaS.Application.App.Deliveries.Handlers;
 public sealed class SearchDeliveryOrdersQueryHandler(
     IDeliveryRepository deliveryRepository,
     ITenantProvider tenantProvider)
-    : IRequestHandler<SearchDeliveryOrdersQuery, IReadOnlyList<DeliveryOrderDto>>
+    : IRequestHandler<SearchDeliveryOrdersQuery, PagedResult<DeliveryOrderDto>>
 {
     private readonly IDeliveryRepository _deliveryRepository = deliveryRepository;
     private readonly ITenantProvider _tenantProvider = tenantProvider;
 
     /// <inheritdoc />
-    public async Task<IReadOnlyList<DeliveryOrderDto>> Handle(SearchDeliveryOrdersQuery request, CancellationToken cancellationToken)
+    public async Task<PagedResult<DeliveryOrderDto>> Handle(SearchDeliveryOrdersQuery request, CancellationToken cancellationToken)
     {
         var tenantId = _tenantProvider.GetCurrentTenantId();
         var orders = await _deliveryRepository.SearchAsync(tenantId, request.Status, request.OrderId, cancellationToken);
@@ -29,7 +30,7 @@ public sealed class SearchDeliveryOrdersQueryHandler(
             .Take(request.PageSize)
             .ToList();
 
-        return paged.Select(order => new DeliveryOrderDto
+        var items = paged.Select(order => new DeliveryOrderDto
         {
             Id = order.Id,
             TenantId = order.TenantId,
@@ -46,6 +47,8 @@ public sealed class SearchDeliveryOrdersQueryHandler(
             FailureReason = order.FailureReason,
             CreatedAt = order.CreatedAt
         }).ToList();
+
+        return new PagedResult<DeliveryOrderDto>(items, request.Page, request.PageSize, orders.Count);
     }
 
     private static IOrderedEnumerable<Domain.Deliveries.Entities.DeliveryOrder> ApplySorting(

src/Application/TakeoutSaaS.Application/App/Deliveries/Queries/SearchDeliveryOrdersQuery.cs

@@ -1,13 +1,14 @@
 using MediatR;
 using TakeoutSaaS.Application.App.Deliveries.Dto;
 using TakeoutSaaS.Domain.Deliveries.Enums;
+using TakeoutSaaS.Shared.Abstractions.Results;
 
 namespace TakeoutSaaS.Application.App.Deliveries.Queries;
 
 /// <summary>
 /// 配送单列表查询。
 /// </summary>
-public sealed class SearchDeliveryOrdersQuery : IRequest<IReadOnlyList<DeliveryOrderDto>>
+public sealed class SearchDeliveryOrdersQuery : IRequest<PagedResult<DeliveryOrderDto>>
 {
     /// <summary>
     /// 订单 ID（可选）。