Get a notification when the NodeKO registration opens.

notify_url_change.rb

require 'eventmachine'
require 'em-http-request'

EM.run {
  timer = EM::PeriodicTimer.new(60) do
    http = EM::HttpRequest.new('http://nodeknockout.com/teams/new').get

    http.errback {
      puts 'Uh oh'
    }

    http.callback {
      puts "Error (#{http.response_header.status})" if http.response_header.status != 200
      is_full = http.response.match('Registration is currently full')
      puts "#{Time.now} - #{is_full ? 'Registration is currently full' : 'Go now!'}"
      %x[notify-send "NodeKO" "It's time to register!"] unless is_full
    }
  end
}

ahaha