1 files changed, 49 insertions, 0 deletions
diff --git a/app/graphql/mutations/notes/create/base.rb b/app/graphql/mutations/notes/create/base.rb
new file mode 100644
index 00000000000..d3a5dae2188
--- /dev/null
+++ b/app/graphql/mutations/notes/create/base.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+module Mutations
+  module Notes
+    module Create
+      # This is a Base class for the Note creation Mutations and is not
+      # mounted as a GraphQL mutation itself.
+      class Base < Mutations::Notes::Base
+        authorize :create_note
+
+        argument :noteable_id,
+                  GraphQL::ID_TYPE,
+                  required: true,
+                  description: 'The global id of the resource to add a note to'
+
+        argument :body,
+                  GraphQL::STRING_TYPE,
+                  required: true,
+                  description: copy_field_description(Types::Notes::NoteType, :body)
+
+        private
+
+        def resolve(args)
+          noteable = authorized_find!(id: args[:noteable_id])
+
+          check_object_is_noteable!(noteable)
+
+          note = ::Notes::CreateService.new(
+            noteable.project,
+            current_user,
+            create_note_params(noteable, args)
+          ).execute
+
+          {
+            note: (note if note.persisted?),
+            errors: errors_on_object(note)
+          }
+        end
+
+        def create_note_params(noteable, args)
+          {
+            noteable: noteable,
+            note: args[:body]
+          }
+        end
+      end
+    end
+  end
+end