feat: 管理端核心实体CRUD补齐

src/Application/TakeoutSaaS.Application/App/Orders/Handlers/SearchOrdersQueryHandler.cs

@@ -0,0 +1,65 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Orders.Dto;
+using TakeoutSaaS.Application.App.Orders.Queries;
+using TakeoutSaaS.Domain.Orders.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Orders.Handlers;
+
+/// <summary>
+/// 订单列表查询处理器。
+/// </summary>
+public sealed class SearchOrdersQueryHandler(
+    IOrderRepository orderRepository,
+    ITenantProvider tenantProvider)
+    : IRequestHandler<SearchOrdersQuery, IReadOnlyList<OrderDto>>
+{
+    private readonly IOrderRepository _orderRepository = orderRepository;
+    private readonly ITenantProvider _tenantProvider = tenantProvider;
+
+    /// <inheritdoc />
+    public async Task<IReadOnlyList<OrderDto>> Handle(SearchOrdersQuery request, CancellationToken cancellationToken)
+    {
+        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var orders = await _orderRepository.SearchAsync(tenantId, request.Status, request.PaymentStatus, cancellationToken);
+
+        if (request.StoreId.HasValue)
+        {
+            orders = orders.Where(x => x.StoreId == request.StoreId.Value).ToList();
+        }
+
+        if (!string.IsNullOrWhiteSpace(request.OrderNo))
+        {
+            var orderNo = request.OrderNo.Trim();
+            orders = orders
+                .Where(x => x.OrderNo.Contains(orderNo, StringComparison.OrdinalIgnoreCase))
+                .ToList();
+        }
+
+        return orders.Select(order => new OrderDto
+        {
+            Id = order.Id,
+            TenantId = order.TenantId,
+            OrderNo = order.OrderNo,
+            StoreId = order.StoreId,
+            Channel = order.Channel,
+            DeliveryType = order.DeliveryType,
+            Status = order.Status,
+            PaymentStatus = order.PaymentStatus,
+            CustomerName = order.CustomerName,
+            CustomerPhone = order.CustomerPhone,
+            TableNo = order.TableNo,
+            QueueNumber = order.QueueNumber,
+            ReservationId = order.ReservationId,
+            ItemsAmount = order.ItemsAmount,
+            DiscountAmount = order.DiscountAmount,
+            PayableAmount = order.PayableAmount,
+            PaidAmount = order.PaidAmount,
+            PaidAt = order.PaidAt,
+            FinishedAt = order.FinishedAt,
+            CancelledAt = order.CancelledAt,
+            CancelReason = order.CancelReason,
+            Remark = order.Remark
+        }).ToList();
+    }
+}