Add visibility to actors

Also use url helpers to generate urls properly

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

lib/mobilizon_web/views/activity_pub/object_view.ex

@@ -1,6 +1,7 @@
 defmodule MobilizonWeb.ActivityPub.ObjectView do
   use MobilizonWeb, :view
   alias Mobilizon.Service.ActivityPub.Utils
+  alias Mobilizon.Activity
 
   def render("event.json", %{event: event}) do
     {:ok, html, []} = Earmark.as_html(event["summary"])
@@ -40,4 +41,29 @@ defmodule MobilizonWeb.ActivityPub.ObjectView do
 
     Map.merge(comment, Utils.make_json_ld_header())
   end
+
+  def render("activity.json", %{activity: %Activity{local: local, data: data} = activity}) do
+    %{
+      "id" => data["id"],
+      "type" =>
+        if local do
+          "Create"
+        else
+          "Announce"
+        end,
+      "actor" => activity.actor,
+      # Not sure if needed since this is used into outbox
+      "published" => Timex.now(),
+      "to" => activity.recipients,
+      "object" =>
+        case data["type"] do
+          "Event" ->
+            render_one(data, ObjectView, "event.json", as: :event)
+
+          "Note" ->
+            render_one(data, ObjectView, "comment.json", as: :comment)
+        end
+    }
+    |> Map.merge(Utils.make_json_ld_header())
+  end
 end