ostatus: use Object.normalize() where appropriate when representing activities

lib/pleroma/web/ostatus/activity_representer.ex

@@ -84,11 +84,13 @@ def to_simple_form(activity, user, with_author \\ false)
   def to_simple_form(%{data: %{"object" => %{"type" => "Note"}}} = activity, user, with_author) do
     h = fn str -> [to_charlist(str)] end
 
-    updated_at = activity.data["object"]["published"]
-    inserted_at = activity.data["object"]["published"]
+    object = Object.normalize(activity.data["object"])
+
+    updated_at = object.data["published"]
+    inserted_at = object.data["published"]
 
     attachments =
-      Enum.map(activity.data["object"]["attachment"] || [], fn attachment ->
+      Enum.map(object.data["attachment"] || [], fn attachment ->
         url = hd(attachment["url"])
 
         {:link,
@@ -101,7 +103,7 @@ def to_simple_form(%{data: %{"object" => %{"type" => "Note"}}} = activity, user,
     mentions = activity.recipients |> get_mentions
 
     categories =
-      (activity.data["object"]["tag"] || [])
+      (object.data["tag"] || [])
       |> Enum.map(fn tag ->
         if is_binary(tag) do
           {:category, [term: to_charlist(tag)], []}
@@ -111,11 +113,11 @@ def to_simple_form(%{data: %{"object" => %{"type" => "Note"}}} = activity, user,
       end)
       |> Enum.filter(& &1)
 
-    emoji_links = get_emoji_links(activity.data["object"]["emoji"] || %{})
+    emoji_links = get_emoji_links(object.data["emoji"] || %{})
 
     summary =
-      if activity.data["object"]["summary"] do
-        [{:summary, [], h.(activity.data["object"]["summary"])}]
+      if object.data["summary"] do
+        [{:summary, [], h.(object.data["summary"])}]
       else
         []
       end
@@ -124,10 +126,9 @@ def to_simple_form(%{data: %{"object" => %{"type" => "Note"}}} = activity, user,
       {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/note']},
       {:"activity:verb", ['http://activitystrea.ms/schema/1.0/post']},
       # For notes, federate the object id.
-      {:id, h.(activity.data["object"]["id"])},
+      {:id, h.(object.data["id"])},
       {:title, ['New note by #{user.nickname}']},
-      {:content, [type: 'html'],
-       h.(activity.data["object"]["content"] |> String.replace(~r/[\n\r]/, ""))},
+      {:content, [type: 'html'], h.(object.data["content"] |> String.replace(~r/[\n\r]/, ""))},
       {:published, h.(inserted_at)},
       {:updated, h.(updated_at)},
       {:"ostatus:conversation", [ref: h.(activity.data["context"])],