module ApplicationHelper
  # How To: Create a guest user
  # https://github.com/plataformatec/devise/wiki/How-To:-Create-a-guest-user

  # if user is logged in, return current_user, else return guest_user
  def current_or_guest_user

    Rails.logger.info 'ApplicationHelper - current_or_guest_user'

    if current_user
      if session[:guest_user_id]
        logging_in
        guest_user.destroy
        session[:guest_user_id] = nil
      end
      current_user
    else
      guest_user
    end
  end

  # find guest_user object associated with the current session,
  # creating one as needed
  def guest_user

    Rails.logger.info 'ApplicationHelper - guest_user'

    guest_user_id = session[:guest_user_id] ||= User.create(:name => "guest").id
    User.find(guest_user_id)
  end

  # called (once) when the user logs in, insert any code your application needs
  # to hand off from guest_user to current_user.
  def logging_in
    Rails.logger.info 'ApplicationHelper - logging_in'
  end
end



class ChatController < ApplicationController
    # Sign In Required - Devise Check
        # before_filter :authenticate_user!

  def show
    # Make sure view is a member
    user = current_or_guest_user
......

end