module Scrivito
  #
  # @api public
  #
  module TestRequest
    ROUTING_ERRORS = [
      AbstractController::ActionNotFound,
      ActionController::RoutingError,
      ActionController::UrlGenerationError,
    ]

    #
    # Make a test request to act as a CMS request.
    # This is necessary for testing controllers that include {Scrivito::ControllerActions}, because
    # these controllers do not have explicit routes by default.
    #
    # @api public
    # @param [Scrivito::BasicObj Obj] test_obj requested +Obj+
    #
    # @example
    #   class MyPageControllerTest < ActionController::TestCase
    #     test 'should respond with success' do
    #       request.for_scrivito_obj
    #       get :index
    #       assert_response :success
    #     end
    #   end
    #
    def for_scrivito_obj(test_obj = nil, routes = nil)
      env[Scrivito::CmsEnv::OBJ_ENV_KEY] = test_obj if test_obj

      # If +assign_parameters+ is monkey patched, then +generate_extras+ also needs to
      # be monkey patched. See [1] for details.
      #
      # [1] https://github.com/rails/rails/commit/f6232a518bb7377948f339d2b0b25dc607e1e42a
      class << (routes || Rails.application.routes)
        def generate_extras(options, recall={})
          super options, recall
        rescue *ROUTING_ERRORS => e
          begin
            super options.merge(controller: 'scrivito/cms_dispatch'), recall
          rescue *ROUTING_ERRORS
            raise e
          end
        end
      end

      def self.assign_parameters(routes, controller_path, *args)
        super routes, controller_path, *args
      rescue *ROUTING_ERRORS => e
        begin
          super routes, 'scrivito/cms_dispatch', *args
        rescue *ROUTING_ERRORS
          raise e
        end
      end
    end

    def for_cms_object(*args)
      raise "The method `for_cms_object' was removed. Please use `for_scrivito_obj' instead"
    end

    #
    # Make a test request to act as it's by a specific Scrivito user
    #
    # @api public
    # @param [Scrivito::User] test_user requested +User+
    #
    def for_scrivito_user(test_user)
      env[EditingContextMiddleware::ENVKEY] = EditingContext.new(editor: -> { test_user })
    end
  end
end