Added basic Registrant portal

app/controllers/registrant/depp_controller.rb

@@ -0,0 +1,32 @@
+class Registrant::DeppController < RegistrantController # EPP controller
+  helper_method :depp_current_user
+
+  rescue_from(Errno::ECONNRESET, Errno::ECONNREFUSED) do |_exception|
+    redirect_to registrant_login_url, alert: t(:no_connection_to_registry)
+  end
+
+  before_action :authenticate_user
+  def authenticate_user
+    redirect_to registrant_login_url and return unless depp_current_user
+  end
+
+  def depp_controller?
+    true
+  end
+
+  def depp_current_user
+    return nil unless current_user
+    @depp_current_user ||= Depp::User.new(
+      tag: current_user.username,
+      password: current_user.password
+    )
+  end
+
+  def response_ok?
+    @data.css('result').each do |x|
+      success_codes = %(1000, 1001, 1300, 1301)
+      return false unless success_codes.include?(x['code'])
+    end
+    true
+  end
+end