refactor: review remarks

lib/mv_web/join_notifier_impl.ex

@@ -0,0 +1,25 @@
+defmodule MvWeb.JoinNotifierImpl do
+  @moduledoc """
+  Default implementation of Mv.Membership.JoinNotifier that delegates to MvWeb.Emails.
+  """
+  @behaviour Mv.Membership.JoinNotifier
+
+  alias MvWeb.Emails.JoinAlreadyMemberEmail
+  alias MvWeb.Emails.JoinAlreadyPendingEmail
+  alias MvWeb.Emails.JoinConfirmationEmail
+
+  @impl true
+  def send_confirmation(email, token, opts \\ []) do
+    JoinConfirmationEmail.send(email, token, opts)
+  end
+
+  @impl true
+  def send_already_member(email) do
+    JoinAlreadyMemberEmail.send(email)
+  end
+
+  @impl true
+  def send_already_pending(email) do
+    JoinAlreadyPendingEmail.send(email)
+  end
+end