Get random passwords from GRC

grc.rb

require 'nokogiri'   
require 'open-uri'

class Grc
  attr_accessor :hex, :ascii, :alpha
  PAGE_URL = "https://www.grc.com/passwords.htm"
  
  def initialize
    chars  = fetch
    @hex   = chars[0].text
    @ascii = chars[1].text
    @alpha = chars[2].text
  end

  def self.random(complexity)
    self.new.send(complexity.to_s)    
  end

  private

  def fetch
    Nokogiri::HTML(open(PAGE_URL)).css("font[size='2']")[1..3]
  end
end