Refactor adding tags to an event

Also refactor extracting tags from content, now uses Pleroma's Formatter

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

lib/mobilizon_web/api/groups.ex

@@ -4,10 +4,9 @@ defmodule MobilizonWeb.API.Groups do
   """
   alias Mobilizon.Actors
   alias Mobilizon.Actors.Actor
-  alias Mobilizon.Service.Formatter
   alias Mobilizon.Service.ActivityPub
   alias Mobilizon.Service.ActivityPub.Utils, as: ActivityPubUtils
-  import MobilizonWeb.API.Utils
+  alias MobilizonWeb.API.Utils
 
   @doc """
   Create a group
@@ -24,17 +23,9 @@ defmodule MobilizonWeb.API.Groups do
            {:bad_actor, Actors.get_local_actor_by_name(admin_actor_username)},
          {:existing_group, nil} <- {:existing_group, Actors.get_group_by_title(title)},
          title <- String.trim(title),
-         mentions <- Formatter.parse_mentions(description),
-         visibility <- Map.get(args, :visibility, "public"),
-         {to, cc} <- to_for_actor_and_mentions(actor, mentions, nil, visibility),
-         tags <- Formatter.parse_tags(description),
-         content_html <-
-           make_content_html(
-             description,
-             mentions,
-             tags,
-             "text/plain"
-           ),
+         visibility <- Map.get(args, :visibility, :public),
+         {content_html, tags, to, cc} <-
+           Utils.prepare_content(actor, description, visibility, [], nil),
          group <-
            ActivityPubUtils.make_group_data(
              url,