require_relative 'pattern1'

module BrDocuments
  module IE
    class RR < Pattern1
      def initialize(number)
        super
        @mask = /^(\d{8}\-\d{1})$|^(\d{9})$/
        @weight = [1, 2, 3, 4, 5, 6, 7, 8]
      end

      private

      def format_ie(number)
        number.sub(/(\d{8})(\d{1})/, '\\1-\\2')
      end

      def generate_check_digit(values, weights)
        sum = reduce_weights(values, weights)
        sum % 9
      end
    end
  end
end