Separate Web modules related to Federation

lib/mobilizon_web/email/checker.ex

@@ -0,0 +1,14 @@
+defmodule MobilizonWeb.Email.Checker do
+  @moduledoc """
+  Provides a function to test emails against a "not so bad" regex.
+  """
+
+  # TODO: simplify me!
+  @email_regex ~r/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
+
+  @doc """
+  Returns whether the email is valid.
+  """
+  @spec valid?(String.t()) :: boolean
+  def valid?(email), do: email =~ @email_regex
+end