Improve member adding and excluding flow

Allow to exclude a member

Send emails to the member when it's excluded

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

lib/web/cache/activity_pub.ex

@@ -16,13 +16,30 @@ defmodule Mobilizon.Web.Cache.ActivityPub do
 
   @cache :activity_pub
 
+  @doc """
+  Gets a actor by username and eventually domain.
+  """
+  @spec get_actor_by_name(String.t()) ::
+          {:commit, Actor.t()} | {:ignore, nil}
+  def get_actor_by_name(name) do
+    Cachex.fetch(@cache, "actor_" <> name, fn "actor_" <> name ->
+      case Actors.get_actor_by_name(name) do
+        %Actor{} = actor ->
+          {:commit, actor}
+
+        nil ->
+          {:ignore, nil}
+      end
+    end)
+  end
+
   @doc """
   Gets a local actor by username.
   """
   @spec get_local_actor_by_name(String.t()) ::
           {:commit, Actor.t()} | {:ignore, nil}
   def get_local_actor_by_name(name) do
-    Cachex.fetch(@cache, "actor_" <> name, fn "actor_" <> name ->
+    Cachex.fetch(@cache, "local_actor_" <> name, fn "local_actor_" <> name ->
       case Actors.get_local_actor_by_name(name) do
         %Actor{} = actor ->
           {:commit, actor}

lib/web/cache/cache.ex

@@ -17,6 +17,7 @@ defmodule Mobilizon.Web.Cache do
     Enum.each(@caches, &Cachex.del(&1, "actor_" <> preferred_username))
   end
 
+  defdelegate get_actor_by_name(name), to: ActivityPub
   defdelegate get_local_actor_by_name(name), to: ActivityPub
   defdelegate get_public_event_by_uuid_with_preload(uuid), to: ActivityPub
   defdelegate get_comment_by_uuid_with_preload(uuid), to: ActivityPub