KPI#1

# KPI 1. Domain dynamics
# values: None (1) / Small (1.1) / Medium (1.3) / Large (1.5)
# min/max = 1/1.5

 # get the domain root of the result link url
 root = URI.parse(url).host # root = URI.join url, '/'
 html = Nokogiri::HTML(open(root))

 # if not collected before parse html for dates
 unless Domain.exists?(root)
 	
  found = []
 	date_formats = [
    /\d{4}-\d{2}-\d{2}/, /\d{4}-\d{1}-\d{2}/, /\d{4}-\d{1}-\d{1}/, /\d{4}-\d{2}-\d{1}/, # yyyy-mm-dd..
    /\d{2}-\d{2}-\d{4}/, /\d{2}-\d{1}-\d{4}/, /\d{1}-\d{1}-\d{4}/, /\d{1}-\d{2}-\d{4}/, # dd-mm-yyyy..
    /\d{4}\.\d{2}\.\d{2}/, /\d{4}\.\d{2}\.\d{1}/, # yyyy.mm.dd
    /\d{2}\.\d{2}\.\d{4}/, /\d{1}\.\d{2}\.\d{4}/, # dd.mm.yyyy
    /\d{4}\/\d{2}\/\d{2}/, /\d{4}\/\d{2}\/\d{1}/, # yyyy/mm/dd
    /\d{2}\/\d{2}\/\d{4}/, /\d{1}\/\d{2}\/\d{4}/  # dd/mm/yyyy
  ]
  date_formats.each_with_index { |v,k| found[k] = html.scan(v).size }
  # if any found, check how recent
 
 else

  # if checked recently (1w) return the latest value

  # or get % change from last time .. https://github.com/postmodern/nokogiri-diff

 end

# store result
Domain.new(root,html)