perform action at specific time

setSpecific.coffee

setSpecific = (callback, hours=0, minutes=0, seconds=0, options={tickRate:10000, repeat:true}) ->
  start = new Date()
  target = new Date()
  #add a day to target if we're already past the time
  target.setDate start.getDate() + 1  if start.getHours() > hours or (start.getHours() is hours and start.getMinutes() > minutes) or start.getHours() is hours and start.getMinutes() is minutes and start.getSeconds() >= seconds
  target.setHours hours
  target.setMinutes minutes
  target.setSeconds seconds
  console.log "set refresh for #{target}"
  intervalID = setInterval ->
    unless options.repeat then clearInterval intervalID
    if new Date() > target
      callback()
  , options.tickRate