alert_me

#!/usr/bin/env ruby

##
# alertme
#
# A simple delay timer to send a growl notification at specific time with a
# message. Useful for when you need to check on something later
#
# echo "Go look at system 42" | alertme in 2 hours
##

# If you're using rubygems, throw the line below in your shell init. E.g.: .bashrc for Bash
# export RUBYOPT=rubygems

# require 'rubygems'
require 'ruby-growl'
require 'chronic'
require 'daemons'

default = Chronic.parse "in 10 seconds"
alert   = Chronic.parse(ARGV.join(" "))  || default
delay   = alert - Time.now
message = STDIN.read

STDERR.puts "Unable to do an alert in the past" and exit 1 if alert < Time.now
STDERR.puts "You need a message" and exit 1 if message.empty?

APP   = "alertme"
HOST  = "localhost"
TITLE = "alertme Notification"

Daemons.daemonize

$0 = "alert at #{alert.strftime("%Y-%m-%d %H:%M:%S")}"
sleep delay

growl = Growl.new 'localhost', 'alertme', [TITLE], [TITLE], nil
growl.notify TITLE, TITLE, message, 1, true
exit 0