Retructured solution

LiteCharms.Features/Shop/Orders/Queries/Handlers/GetCustomerOrdersQueryHandler.cs

@@ -0,0 +1,32 @@
+using LiteCharms.Extensions;
+using LiteCharms.Features.Shop.Orders.Models;
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.Orders.Queries.Handlers;
+
+public class GetCustomerOrdersQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetCustomerOrdersQuery, Result<Order[]>>
+{
+    public async ValueTask<Result<Order[]>> Handle(GetCustomerOrdersQuery request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if(!await context.Customers.AsNoTracking().AnyAsync(c => c.Id == request.CustomerId, cancellationToken))
+                return Result.Fail<Order[]>(new Error($"Customer with Id {request.CustomerId} does not exist."));
+
+            var orders = await context.Orders.AsNoTracking()
+                .OrderByDescending(o => o.CreatedAt)
+                .Where(o => o.CustomerId == request.CustomerId)
+                .ToArrayAsync(cancellationToken);
+
+            return orders?.Length > 0
+                ? Result.Ok(orders.Select(o => o.ToModel()).ToArray())
+                : Result.Fail<Order[]>(new Error($"No orders found for customer with Id {request.CustomerId}."));
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail<Order[]>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}