Retructured solution

LiteCharms.Features/Shop/Customers/Queries/Handlers/GetCustomerQueryHandler.cs

@@ -0,0 +1,26 @@
+using LiteCharms.Extensions;
+using LiteCharms.Features.Shop.Customers.Models;
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.Customers.Queries.Handlers;
+
+public class GetCustomerQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetCustomerQuery, Result<Customer>>
+{
+    public async ValueTask<Result<Customer>> Handle(GetCustomerQuery request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var customer = await context.Customers.FirstOrDefaultAsync(c => c.Id == request.CustomerId, cancellationToken);
+
+            return customer is not null
+                ? Result.Ok(customer.ToModel())
+                : Result.Fail<Customer>($"Customer not found with id {request.CustomerId}");
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail<Customer>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}