class DjrController < ActionController::Base
  
  def djr
    
    routeSet = Rails.application.routes
    routes = routeSet.routes
    
    js = ";"
    js << routes.map { |route| 
      route.defaults[:controller]
    }.uniq.compact.map { |route|
      mapped_controllers route
    }.compact.join
    js << routes.map { |route| mapped_actions route }.compact.join
    
    render :js => js.to_s
    
  end
  
  private
  def mapped_controllers route
    route_str = ""
    controller_name = "#{route.camelize.gsub(/\:\:/, '.')}Controller"
    if m = controller_name.match(/\./)
      route_str << "if(!#{m.pre_match}) { var #{m.pre_match} = {}; }; "
    end
    route_str << "#{controller_name} = function(){DJR.call(this);}; #{controller_name}.prototype.routes = {};"
  end
  
  def mapped_actions route
    if route.defaults[:controller].present?
      method = route.conditions[:request_method].present? ? route.conditions[:request_method].source[1..-2] : "GET"
      controller_name = "#{route.defaults[:controller].camelize.gsub(/\:\:/, '.')}Controller"
      " #{controller_name}.prototype.routes['#{route.defaults[:action]}'] = {url: \"#{route.path.ast}\", method: \"#{method}\" };"
    else
      nil
    end
  end
  
end