Fix refactoring opportunities

lib/service/activity_pub/transmogrifier.ex

@@ -24,7 +24,8 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
     if is_binary(Enum.at(actor, 0)) do
       Enum.at(actor, 0)
     else
-      Enum.find(actor, fn %{"type" => type} -> type in ["Person", "Service", "Application"] end)
+      actor
+      |> Enum.find(fn %{"type" => type} -> type in ["Person", "Service", "Application"] end)
       |> Map.get("id")
     end
   end

lib/service/activity_pub/utils.ex

@@ -348,7 +348,7 @@ defmodule Mobilizon.Service.ActivityPub.Utils do
     if is_nil(metadata.options) do
       res
     else
-      options = struct(Mobilizon.Events.EventOptions, metadata.options) |> Map.from_struct()
+      options = Events.EventOptions |> struct(metadata.options) |> Map.from_struct()
 
       Enum.reduce(options, res, fn {key, value}, acc ->
         (value && Map.put(acc, camelize(key), value)) ||