# frozen_string_literal: true

module NulogySSO

  # A mix-in that is intended to enhance a controller with NulogySSO authentication code.
  # It is recommended to `include NulogySSO::ControllerHelper` in your ApplicationController.
  module ControllerHelper
    extend ActiveSupport::Concern

    included do
      # Makes the commonly used @current_user variable available to controllers and views.
      # This emulates a code pattern popular in Rails apps using Devise.
      attr_reader :current_user
      helper_method :current_user
      before_action :store_previous_url_in_session
    end

    def authenticate_sso_user
      raw_token = cookies[NulogySSO.auth_cookie_key]
      return redirect_to nulogy_sso.login_path if raw_token.blank?

      @current_user = Authenticator.new.authenticated_user(raw_token)
      return redirect_to nulogy_sso.login_path if @current_user.blank?
    end

    def store_previous_url_in_session
      session[:previous_request_url] = request.url unless current_user
    end
  end
end