Fix bug when object is a nested Absinthe Type

lib/introspection.ex

@@ -0,0 +1,12 @@
+defmodule Rajska.Introspection do
+  @moduledoc false
+
+  alias Absinthe.Type
+
+  @doc """
+  Introspect the Absinthe Type to get the underlying object type
+  """
+  def get_object_type(%Type.List{of_type: object_type}), do: get_object_type(object_type)
+  def get_object_type(%Type.NonNull{of_type: object_type}), do: get_object_type(object_type)
+  def get_object_type(object_type), do: object_type
+end

lib/middlewares/object_authorization.ex

@@ -57,6 +57,7 @@ defmodule Rajska.ObjectAuthorization do
     Schema,
     Type
   }
+  alias Rajska.Introspection
   alias Type.{Custom, Scalar}
 
   def call(%Resolution{state: :resolved} = resolution, _config), do: resolution
@@ -67,15 +68,11 @@ defmodule Rajska.ObjectAuthorization do
 
   defp authorize(type, fields, resolution) do
     type
+    |> Introspection.get_object_type()
     |> lookup_object(resolution.schema)
     |> authorize_object(fields, resolution)
   end
 
-  # When is a list, inspect object that composes the list.
-  defp lookup_object(%Type.List{of_type: object_type}, schema) do
-    lookup_object(object_type, schema)
-  end
-
   defp lookup_object(object_type, schema) do
     Schema.lookup_type(schema, object_type)
   end

lib/middlewares/object_scope_authorization.ex

@@ -68,6 +68,7 @@ defmodule Rajska.ObjectScopeAuthorization do
   """
 
   alias Absinthe.{Blueprint, Phase, Type}
+  alias Rajska.Introspection
   use Absinthe.Phase
 
   @spec run(Blueprint.t() | Phase.Error.t(), Keyword.t()) :: {:ok, map}
@@ -92,7 +93,7 @@ defmodule Rajska.ObjectScopeAuthorization do
 
   # Object
   defp result(%{fields: fields, emitter: %{schema_node: schema_node} = emitter} = result, context) do
-    type = get_object_type(schema_node.type)
+    type = Introspection.get_object_type(schema_node.type)
     scope = Type.meta(type, :scope)
 
     case is_authorized?(scope, result.root_value, context, type) do
@@ -109,11 +110,6 @@ defmodule Rajska.ObjectScopeAuthorization do
   # Leafs
   defp result(result, _context), do: result
 
-  # When is a list, inspect object that composes the list.
-  defp get_object_type(%Type.List{of_type: object_type}), do: object_type
-  defp get_object_type(%Type.NonNull{of_type: object_type}), do: object_type
-  defp get_object_type(object_type), do: object_type
-
   defp walk_result(fields, context, new_fields \\ [])
 
   defp walk_result([], _context, new_fields), do: Enum.reverse(new_fields)
@@ -140,7 +136,7 @@ defmodule Rajska.ObjectScopeAuthorization do
   defp error(%{source_location: location, schema_node: %{type: type}}) do
     %Phase.Error{
       phase: __MODULE__,
-      message: "Not authorized to access object #{get_object_type(type).identifier}",
+      message: "Not authorized to access object #{Introspection.get_object_type(type).identifier}",
       locations: [location]
     }
   end