module Scrivito

module RoutingExtensions

  def scrivito_route(path, using:, format: nil, via: :get)
    assert_scrivito_route_enabled
    # @set is a ActionDispatch::Routing::RouteSet
    # see: http://git.io/v4UYF and http://git.io/v4UOI
    route_set = @set

    route_name = using.to_sym

    route = Route.register(route_set, route_name)

    options = {
      to: 'scrivito/cms_dispatch#index',
      via: via,
      format: format,
      as: route.helper_name,
    }

    # removed fixed length constraint on ids
    options[:constraints] = {id: /[0-9]{4,}/} if route_name == :slug_id

    begin
      match(path, options)
    rescue ArgumentError => error
      if error.message.include?(route.helper_name)
        raise ScrivitoError,
            %(You have already defined a Scrivito route with the name "#{route_name}".)
      else
        raise error
      end
    end
  end

  private

  def assert_scrivito_route_enabled
    unless Scrivito::Configuration.scrivito_route_enabled?
      raise ScrivitoError, 'The preset routes are still enabled. Please disable them by ' \
        'setting the configuration "inject_preset_routes" to false before using scrivito_route'
    end
  end

end

end