module Parliament
  module Grom
    module Decorator
      # Decorator namespace for Grom::Node instances with type: https://id.parliament.uk/schema/HouseSeat
      module HouseSeat
        # Alias houseSeatHasHouse with fallback.
        #
        # @return [Grom::Node, nil] the house of the Grom::Node or nil.
        def house
          respond_to?(:houseSeatHasHouse) ? houseSeatHasHouse.first : nil
        end

        # Alias houseSeatHasConstituencyGroup with fallback.
        #
        # @return [Grom::Node, nil] the constituency group of the Grom::Node or nil.
        def constituency
          respond_to?(:houseSeatHasConstituencyGroup) ? houseSeatHasConstituencyGroup.first : nil
        end

        # Alias houseSeatHasSeatIncumbency with fallback.
        #
        # @return [Array, Array] the seat incumbencies of the Grom::Node or an empty.
        def seat_incumbencies
          respond_to?(:houseSeatHasSeatIncumbency) ? houseSeatHasSeatIncumbency : []
        end
      end
    end
  end
end