# Post your direct messages from certain users as public tweets
#
# (ex) Broadcast DM's from tyler-durden and spacemonkey as user project-mayhem
#
#   $ ruby twitter_bot.rb project-mayhem:password tyler-durden spacemonkey
#
# Example Cron Entry:
# */2 * * * * /usr/bin/ruby /home/foo/bin/retweet.rb project-mayhem:password tyler-durden spacemonkey

require 'rubygems'
require 'yaml'
require 'twitter'

CACHE = File.join(File.dirname(__FILE__), "twitter-bot.cache")

twit     = Twitter::Base.new *ARGV.shift.split(":")
sources  = ARGV.dup
dm_since = File.exist?(CACHE) ? IO.read(CACHE) : nil
now      = nil

twit.direct_messages(dm_since).each do |message|
  now ||= message.created_at
  if sources.include?(message.sender_screen_name)
    twit.post message.text.strip
  end
end

File.open CACHE, 'w' do |f|
  f.write now
end if now