Retructured solution

LiteCharms.Features/Shop/ShoppingCarts/Queries/Handlers/GetShoppingCartQueryHandler.cs

@@ -0,0 +1,26 @@
+using LiteCharms.Extensions;
+using LiteCharms.Features.Shop.Postgres;
+using LiteCharms.Features.Shop.ShoppingCarts.Models;
+
+namespace LiteCharms.Features.ShoppingCarts.Queries.Handlers;
+
+public class GetShoppingCartQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetShoppingCartQuery, Result<ShoppingCart>>
+{
+    public async ValueTask<Result<ShoppingCart>> Handle(GetShoppingCartQuery request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var cart = await context.ShoppingCarts.AsNoTracking().FirstOrDefaultAsync(c => c.Id == request.ShoppingCartId, cancellationToken);
+
+            return cart is not null
+                ? Result.Ok(cart.ToModel())
+                : Result.Fail<ShoppingCart>($"Failed to find shopping cart with id {request.ShoppingCartId}");
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail<ShoppingCart>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}