module Faker
  module IdentificationESCL
    extend IdentificationES
    extend self

    # RUT is the Chilean ID, followed by format:  XX.XXX.XXX - Y
    # http://es.wikipedia.org/wiki/Rol_%C3%9Anico_Tributario
    #
    # The last Y is a modulo 11 validation code. In the case the result is 10, it will be replaced by a 'K' character
    def rut
      # Rut is gonna be between 1.000.000 and 24.999.999
      n = Kernel.rand(24000000) + 1000000
      "#{n}-#{dv(n)}"
    end

    private
      def dv(rut)
        total = rut.to_s.rjust(8,'0').split(//).zip(%w(3 2 7 6 5 4 3 2)).collect{|a,b| a.to_i*b.to_i}.inject(:+)
        (11 - total % 11).to_s.gsub(/10/,'k').gsub(/11/,'0')
      end
  end
end