Improve and activate groups

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/federation/activity_pub/types/events.ex

@@ -196,8 +196,9 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Events do
         end
       )
 
-    args = Map.put(args, :options, options)
-
-    Map.update(args, :tags, [], &ConverterUtils.fetch_tags/1)
+    args
+    |> Map.put(:options, options)
+    |> Map.update(:tags, [], &ConverterUtils.fetch_tags/1)
+    |> Map.update(:contacts, [], &ConverterUtils.fetch_actors/1)
   end
 end

lib/federation/activity_stream/converter/utils.ex

@@ -3,8 +3,8 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Utils do
   Various utils for converters.
   """
 
+  alias Mobilizon.{Actors, Events}
   alias Mobilizon.Actors.Actor
-  alias Mobilizon.Events
   alias Mobilizon.Events.Tag
   alias Mobilizon.Mention
   alias Mobilizon.Storage.Repo
@@ -42,6 +42,13 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Utils do
     address
   end
 
+  def fetch_actors(actors) when is_list(actors) do
+    Logger.debug("fetching contacts")
+    actors |> Enum.map(& &1.id) |> Enum.filter(& &1) |> Enum.map(&Actors.get_actor/1)
+  end
+
+  def fetch_actors(_), do: []
+
   @spec build_tags([Tag.t()]) :: [map()]
   def build_tags(tags) do
     Enum.map(tags, fn %Tag{} = tag ->