Retructured solution

LiteCharms.Features/Shop/Orders/Refunds/Queries/GetCustomerRefundsQuery.cs

@@ -0,0 +1,18 @@
+using LiteCharms.Features.Shop.Orders.Models;
+
+namespace LiteCharms.Features.Shop.Orders.Refunds.Queries;
+
+public class GetCustomerRefundsQuery : IRequest<Result<OrderRefund[]>>
+{
+    public Guid CustomerId { get; set; }
+
+    private GetCustomerRefundsQuery(Guid customerId) => CustomerId = customerId;
+
+    public static GetCustomerRefundsQuery Create(Guid customerId)
+    {
+        if (customerId == Guid.Empty)
+            throw new ArgumentException("CustomerId is required.", nameof(customerId));
+
+        return new(customerId);
+    }
+}

LiteCharms.Features/Shop/Orders/Refunds/Queries/GetRefundQuery.cs

@@ -0,0 +1,18 @@
+using LiteCharms.Features.Shop.Orders.Models;
+
+namespace LiteCharms.Features.Shop.Orders.Refunds.Queries;
+
+public class GetRefundQuery : IRequest<Result<OrderRefund>>
+{
+    public Guid OrderRefundId { get; set; }
+
+    private GetRefundQuery(Guid orderRefundId) => OrderRefundId = orderRefundId;
+
+    public static GetRefundQuery Create(Guid orderRefundId)
+    {
+        if(orderRefundId == Guid.Empty)
+            throw new ArgumentException("Customer ID is required.", nameof(orderRefundId));
+
+        return new(orderRefundId);
+    }
+}

LiteCharms.Features/Shop/Orders/Refunds/Queries/Handlers/GetCustomerRefundsQueryHandler.cs

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

LiteCharms.Features/Shop/Orders/Refunds/Queries/Handlers/GetRefundQueryHandler.cs

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+using LiteCharms.Extensions;
+using LiteCharms.Features.Shop.Orders.Models;
+using LiteCharms.Features.Shop.Orders.Refunds.Queries;
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.Shop.Orders.Refunds.Queries.Handlers;
+
+public class GetRefundQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetRefundQuery, Result<OrderRefund>>
+{
+    public async ValueTask<Result<OrderRefund>> Handle(GetRefundQuery request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var refund = await context.OrderRefunds.AsNoTracking().FirstOrDefaultAsync(r => r.Id == request.OrderRefundId, cancellationToken);
+
+            return refund is not null
+                ? Result.Ok(refund.ToModel())
+                : Result.Fail<OrderRefund>($"Order refund could not be found with id {request.OrderRefundId}");
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail<OrderRefund>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}