require 'nokogiri'

class PostPayload
  attr_accessor :mac_address, :ip_address, :xml, :xml_document

  def initialize(params)
    @mac_address = params[:mac_address]
    @ip_address = params[:ip_address]
    @xml = params[:xml]

    @xml_document = load_xml

  end

  # Extract the field from the xml payload
  def method_missing(method, *args, &block)
    if method.to_s =~ /^find_(.*)/
      puts "Looking for node named #{$1}"
      return content = @xml_document.css("#{$1}").first.content.to_s
    end
    super
  end

  private
  def load_xml
    xml_doc = Nokogiri::XML(@xml)
  end

end