Calculates the amount of time remaining in a 40 hour work-week

40hr.rb

#!/usr/bin/env ruby

# 4hr HOURS_THIS_WEEK TIME_CLOCKED_IN

require 'time'

begin
  week_time = ARGV[0].to_f
  clock_in = Time.parse(ARGV[1])
rescue Exception => e
  exit
end

seconds = (40 - week_time) * 3600
time_left = (Time.mktime(0)+seconds).strftime("%H:%M:%S")
out_time = clock_in + seconds

puts "Clocked in at #{clock_in.strftime('%l:%M%P')} with #{week_time} hours this week."
puts "Time left:     #{time_left}."
puts "Clockout time: #{out_time.strftime('%l:%M:%S%P')}."