require 'spotlight'

module Spotlight::Concerns
  # Inherit from the host app's ApplicationController
  # This will configure e.g. the layout used by the host
  module ApplicationController
    extend ActiveSupport::Concern
    include Spotlight::Controller
    
    included do
      layout 'spotlight/spotlight'
      
      helper Spotlight::ApplicationHelper

      rescue_from CanCan::AccessDenied do |exception|
        if current_exhibit and !can? :read, current_exhibit
          # Try to authenticate the user
          authenticate_user!
  
          # If that fails (and we end up back here), offer a 404 error instead
          raise ActionController::RoutingError.new('Not Found')
        else
          redirect_to main_app.root_url, :alert => exception.message
        end
      end
    end
  end
end