take a snapshot of whytheluckystiff.net whenever it updates

why-daemon.rb

begin
  require "terminal-notifier"
rescue LoadError
end
require "open-uri"

WHO = "whytheluckystiff.net"
WHAT = "http://"
WHERE = "/"
WHY = WHAT + WHO + WHERE
WHEN = 5*60

loop do
  begin
    open(WHY) do |why|
      content = why.read
      latest_why = Dir["why.*.txt"].sort.last
      if latest_why.nil? || File.read(latest_why) != content
        File.open("why.#{Time.now.strftime '%F.%T'}.txt", "w") { |f| f << content }
        TerminalNotifier.notify("#{WHO} has been updated!", title: "Why Daemon", open: WHY) if defined?(TerminalNotifier)
        puts "#{Time.now.strftime '%F.%T'}: #{WHO} has been updated!"
      end
    end
  rescue SocketError
    puts "#{Time.now.strftime '%F.%T'}: can't reach #{WHO}, retrying in #{WHEN} seconds"
  end
  sleep(WHEN)
end