Pleroma/lib/pleroma/web/activity_pub/views/object_view.ex

defmodule Pleroma.Web.ActivityPub.ObjectView do
  use Pleroma.Web, :view
  alias Pleroma.{Object, Activity}
  alias Pleroma.Web.ActivityPub.Transmogrifier

  def render("object.json", %{object: %Object{} = object}) do
    base = Pleroma.Web.ActivityPub.Utils.make_json_ld_header()

    additional = Transmogrifier.prepare_object(object.data)
    Map.merge(base, additional)
  end

  def render("object.json", %{object: %Activity{} = activity}) do
    base = Pleroma.Web.ActivityPub.Utils.make_json_ld_header()
    object = Object.normalize(activity.data["object"])

    additional =
      Transmogrifier.prepare_object(activity.data)
      |> Map.put("object", Transmogrifier.prepare_object(object.data))

    Map.merge(base, additional)
  end
end