Retructured solution

LiteCharms.Features/Shop/CartPackages/Queries/Handlers/GetPackageItemsQueryHandler.cs

@@ -0,0 +1,32 @@
+using LiteCharms.Extensions;
+using LiteCharms.Features.Shop.CartPackages.Models;
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.CartPackages.Queries.Handlers;
+
+public class GetPackageItemsQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetPackageItemsQuery, Result<PackageItem[]>>
+{
+    public async ValueTask<Result<PackageItem[]>> Handle(GetPackageItemsQuery request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.Packages.AnyAsync(p => p.Id == request.PackageId, cancellationToken))
+                return Result.Fail<PackageItem[]>($"Package could not be found with ID {request.PackageId}");
+
+            var items = await context.PackageItems.AsNoTracking()
+                .OrderByDescending(o => o.CreatedAt)
+                .Where(p => p.PackageId == request.PackageId)
+                .ToArrayAsync(cancellationToken);
+
+            return items?.Length > 0
+                ? Result.Ok(items.Select(i => i.ToModel()).ToArray())
+                : Result.Fail<PackageItem[]>($"Could not find package items by package ID {request.PackageId}");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail<PackageItem[]>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}