fix(activitypub): apply the Note fixups to incoming Questions

Ported from Akkoma 678f6fdb7.

Co-authored-by: Oneric <oneric@oneric.stub>

changelog.d/question-note-fixups.fix

@@ -0,0 +1 @@
+Apply the Note fixups to incoming Questions, so polls with a single non-array tag or attachment are accepted

lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex

@@ -213,7 +213,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.ArticleNotePageValidator do
 
   defp fix_misskey_content(object), do: object
 
-  defp fix(data) do
+  def fix(data) do
     data
     |> CommonFixes.fix_actor()
     |> CommonFixes.fix_object_defaults()

lib/pleroma/web/activity_pub/object_validators/question_validator.ex

@@ -6,10 +6,9 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.QuestionValidator do
   use Ecto.Schema
 
   alias Pleroma.EctoType.ActivityPub.ObjectValidators
-  alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
+  alias Pleroma.Web.ActivityPub.ObjectValidators.ArticleNotePageValidator
   alias Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
   alias Pleroma.Web.ActivityPub.ObjectValidators.QuestionOptionsValidator
-  alias Pleroma.Web.ActivityPub.Transmogrifier
 
   import Ecto.Changeset
 
@@ -62,11 +61,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.QuestionValidator do
 
   defp fix(data) do
     data
-    |> CommonFixes.fix_actor()
-    |> CommonFixes.fix_object_defaults()
-    |> CommonFixes.fix_quote_url()
-    |> CommonFixes.fix_likes()
-    |> Transmogrifier.fix_emoji()
+    |> ArticleNotePageValidator.fix()
     |> fix_closed()
   end
 

test/pleroma/web/activity_pub/transmogrifier/question_handling_test.exs

@@ -103,6 +103,25 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier.QuestionHandlingTest do
     assert Enum.sort(object.data["oneOf"]) == Enum.sort(options)
   end
 
+  test "Question activity with a single, non-array tag" do
+    tag = %{
+      "href" => "https://gts.example/tags/caturday",
+      "name" => "#caturday",
+      "type" => "Hashtag"
+    }
+
+    data =
+      File.read!("test/fixtures/mastodon-question-activity.json")
+      |> Jason.decode!()
+      |> Kernel.put_in(["object", "tag"], tag)
+
+    {:ok, %Activity{local: false} = activity} = Transmogrifier.handle_incoming(data)
+    object = Object.normalize(activity, fetch: false)
+
+    assert tag in object.data["tag"]
+    assert Object.hashtags(object) == ["caturday"]
+  end
+
   test "Mastodon Question activity with custom emojis" do
     options = [
       %{