feat: 增加分页排序与FluentValidation

src/Application/TakeoutSaaS.Application/App/Payments/Handlers/SearchPaymentsQueryHandler.cs

@@ -1,6 +1,7 @@
 using MediatR;
 using TakeoutSaaS.Application.App.Payments.Dto;
 using TakeoutSaaS.Application.App.Payments.Queries;
+using TakeoutSaaS.Domain.Payments.Entities;
 using TakeoutSaaS.Domain.Payments.Repositories;
 using TakeoutSaaS.Shared.Abstractions.Tenancy;
 
@@ -28,7 +29,13 @@ public sealed class SearchPaymentsQueryHandler(
             payments = payments.Where(x => x.OrderId == request.OrderId.Value).ToList();
         }
 
-        return payments.Select(payment => new PaymentDto
+        var sorted = ApplySorting(payments, request.SortBy, request.SortDescending);
+        var paged = sorted
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
+            .ToList();
+
+        return paged.Select(payment => new PaymentDto
         {
             Id = payment.Id,
             TenantId = payment.TenantId,
@@ -40,7 +47,22 @@ public sealed class SearchPaymentsQueryHandler(
             ChannelTransactionId = payment.ChannelTransactionId,
             PaidAt = payment.PaidAt,
             Remark = payment.Remark,
-            Payload = payment.Payload
+            Payload = payment.Payload,
+            CreatedAt = payment.CreatedAt
         }).ToList();
     }
+
+    private static IOrderedEnumerable<Domain.Payments.Entities.PaymentRecord> ApplySorting(
+        IReadOnlyCollection<Domain.Payments.Entities.PaymentRecord> payments,
+        string? sortBy,
+        bool sortDescending)
+    {
+        return sortBy?.ToLowerInvariant() switch
+        {
+            "paidat" => sortDescending ? payments.OrderByDescending(x => x.PaidAt) : payments.OrderBy(x => x.PaidAt),
+            "status" => sortDescending ? payments.OrderByDescending(x => x.Status) : payments.OrderBy(x => x.Status),
+            "amount" => sortDescending ? payments.OrderByDescending(x => x.Amount) : payments.OrderBy(x => x.Amount),
+            _ => sortDescending ? payments.OrderByDescending(x => x.CreatedAt) : payments.OrderBy(x => x.CreatedAt)
+        };
+    }
 }