twitter api: fix up activity representer

lib/pleroma/web/twitter_api/representers/activity_representer.ex

@@ -12,6 +12,8 @@ defmodule Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter do
   alias Pleroma.Web.CommonAPI.Utils
   alias Pleroma.Formatter
   alias Pleroma.HTML
+  alias Pleroma.Web.MastodonAPI
+  alias Pleroma.Web.MastodonAPI.StatusView
 
   defp user_by_ap_id(user_list, ap_id) do
     Enum.find(user_list, fn %{ap_id: user_id} -> ap_id == user_id end)
@@ -186,6 +188,8 @@ defmodule Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter do
 
     summary = HTML.strip_tags(object["summary"])
 
+    card = StatusView.render("card.json", MastodonAPI.get_status_card(activity.id))
+
     %{
       "id" => activity.id,
       "uri" => activity.data["object"]["id"],
@@ -214,7 +218,8 @@ defmodule Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter do
       "possibly_sensitive" => possibly_sensitive,
       "visibility" => Pleroma.Web.MastodonAPI.StatusView.get_visibility(object),
       "summary" => summary,
-      "summary_html" => summary |> Formatter.emojify(object["emoji"])
+      "summary_html" => summary |> Formatter.emojify(object["emoji"]),
+      "card" => card
     }
   end