+ def is_list?(%{data: %{"listMessage" => _}}), do: true
+ def is_list?(_), do: false
+
+ def visible_for_user?(%{actor: ap_id}, %User{ap_id: ap_id}), do: true
+
+ def visible_for_user?(%{data: %{"listMessage" => list_ap_id}} = activity, %User{} = user) do
+ user.ap_id in activity.data["to"] ||
+ list_ap_id
+ |> Pleroma.List.get_by_ap_id()
+ |> Pleroma.List.member?(user)
+ end
+
+ def visible_for_user?(%{data: %{"listMessage" => _}}, nil), do: false
+