Ozy

#TwitterAdiumSL
#Ozy

#Credit for original development
#Jesse Newland
#jnewland@gmail.com

#load required standard libraries
require 'yaml'
require 'rexml/document'
require 'fileutils'
require 'net/http'
require 'timeout'
begin
  require 'Time'
rescue
end

#Read the preferences file for username/password
#On the first run, create preferences file
begin
  configfile = open(ENV["HOME"]+"/.twitter")
  config = YAML::load configfile
rescue
  begin
    Fileutils.mv(ENV["HOME"]+"/.twitterc",ENV["HOME"]+"/.twitter")
  rescue
    template = <<EOF
#~/.twitter
#
#Please fill in fields like this:
#
#username: twitteradium
#email: twitteradium@jnewland.com
#password: secret
#
username:
email:
password:
EOF
    configfile = open(ENV["HOME"]+"/.twitter","w")
    configfile.write(template)
    configfile.close
  end
  configfile = open(ENV["HOME"]+"/.twitter")
  config = YAML::load open(ENV["HOME"]+"/.twitter")
end

#If username/preferences is not set, request preference file update
if config["username"] == nil || config["password"] == nil
  system("open #{ENV["HOME"]}/.twitter")
  puts "Welcome to Twitter Adium - please edit your ~/.twitter file to contain your username, email, and password - http://twitter.com/twitteradium"
  exit(0)
end

#Store last twitter and timestamp
timefile = "/tmp/.#{ENV["LOGNAME"]}_TwitterAdium.time"
tweetfile = "/tmp/.#{ENV["LOGNAME"]}_TwitterAdium.twitter"

#Read last tweet's time and string
begin
    time_updated = open(timefile).read.to_i
    last_tweet = open(tweetfile).read.to_s
#If either time or string fails to return, set them
#This is the initial run case
rescue
    time_updated = Time.now.to_i
    open(timefile,"w").write(Time.now.to_i)
    last_tweet = ''
end

#If 5 minutes has passed or this is the first run, update
#5 minutes is chosen to work simultaneously with a twitter client
if (Time.now.to_i - time_updated.to_i) > 300  || last_tweet == ''
  open(timefile,"w").write(Time.now.to_i)
#Otherwise, use last tweet and exit
#This reduces the number of twitter requests
else
  puts last_tweet
  exit(0)
end

#Location of local Twitter XML file
user_timeline_uri = "/users/show/#{config["username"]}.xml"

#Update the status
begin
  Timeout::timeout(15) do
#Open a connection to Twitter
    Net::HTTP.start('twitter.com') do |http|
#Setup the grab for the XML file
      req = Net::HTTP::Get.new(user_timeline_uri)
#Login
      req.basic_auth config["username"], config["password"]
#Request the XML file
      response = http.request(req)
#Handle the response
      case response
#If the response is successful, update with the current status
      when Net::HTTPSuccess
#Recognize the XML from the response
        xmldoc = REXML::Document.new(response.body)
#Grab the status from the XML as a string
        tweet = xmldoc.root.elements["status[1]/text"].text
#If the status starts with an '@' for a reply, ignore it
        if tweet.index('@') == 0
#If the status is new, update it
        elsif !(last_tweet == tweet)
          open(tweetfile,"w").write(tweet)
          last_tweet = open(tweetfile).read.to_s
        end
        puts last_tweet
      end
    end
  end
#If the request times out, handle
rescue Timeout::Error
#Update the last request time to minimize requests
  open(timefile,"w").write(Time.now.to_i)
#If this is the first run, update a default status
  if last_tweet == ''
    puts 'Twitter is slow. http://twitter.com/twitteradium'
#Otherwise, use the last status and exit
  else
    puts last_tweet
  end
  exit(O)
end