class ActionDispatch::Routing::RouteSet::NamedRouteCollection::UrlHelper

def self.create(route, options, route_name)
  if optimize_helper?(route)
    OptimizedUrlHelper.new(route, options, route_name)
  else
    new(route, options, route_name)
  end
end

def self.optimize_helper?(route)
  route.path.requirements.empty? && !route.glob?
end

def call(t, method_name, args, inner_options, url_strategy)
  controller_options = t.url_options
  options = controller_options.merge @options
  hash = handle_positional_args(controller_options,
                                inner_options || {},
                                args,
                                options,
                                @segment_keys)
  t._routes.url_for(hash, route_name, url_strategy, method_name)
end

def handle_positional_args(controller_options, inner_options, args, result, path_params)
  if args.size > 0
    # take format into account
    if path_params.include?(:format)
      path_params_size = path_params.size - 1
    else
      path_params_size = path_params.size
    end
    if args.size < path_params_size
      path_params -= controller_options.keys
      path_params -= (result[:path_params] || {}).merge(result).keys
    else
      path_params = path_params.dup
    end
    inner_options.each_key do |key|
      path_params.delete(key)
    end
    args.each_with_index do |arg, index|
      param = path_params[index]
      result[param] = arg if param
    end
  end
  result.merge!(inner_options)
end

def initialize(route, options, route_name)
  @options      = options
  @segment_keys = route.segment_keys.uniq
  @route        = route
  @route_name   = route_name
end