pomodoro.rb

# 10 seconds
TICK = 1

TICKS_PER_MINUTE = 6

# 25 minutes
total_time = 25 * TICKS_PER_MINUTE

puts "Begin pomodoro!"

0.upto(total_time) do |i|
  x = case i
    when TICK*1;                    "10 seconds elapsed"
    when TICK*TICKS_PER_MINUTE;     "60 seconds elapsed"
    when TICK*TICKS_PER_MINUTE*5;   "5 minutes elapsed"
    when TICK*TICKS_PER_MINUTE*10;  "10 minutes elapsed"
    when TICK*TICKS_PER_MINUTE*15;  "15 minutes elapsed"
    when TICK*TICKS_PER_MINUTE*20;  "20 minutes elapsed"
    when TICK*TICKS_PER_MINUTE*25;  "All done! Take a break."
  end
  puts x unless x.nil?
  sleep 60/TICKS_PER_MINUTE
end