# twitter-autofollow.rb
# 2010-04-01 Antoine Girard <thetoine@gmail.com>

# This script will search all you follower and add them as a friend
# Also post any privately received message to your public timeline.

require 'rubygems'
require 'twitter'

class	AutoFollow

	USER = ''
	PASSWORD = ''
	INTERVAL = 60 # Delay between follows in seconds

	attr_accessor :client

	def initialize
		httpauth = Twitter::HTTPAuth.new(USER, PASSWORD)
		self.client = Twitter::Base.new(httpauth)

		# init the infinite loop
		start
	end

	def start
		puts "Friending everyone."
		friends

		puts "Checking for private messages and post new ones."
		post_messages

		# sleep for an interval and call "start" method again
		puts "Sleeping for #{INTERVAL} seconds..."
		sleep(INTERVAL)
		start
	end

	def friends
 		# get friends following
		friends = self.client.friend_ids
		followers = self.client.follower_ids

		followers.each do |user|
			begin
				self.client.friendship_create(user) if !friends.include?(user)
			rescue Twitter => msg
				puts "Twitter says: #{msg}"
			rescue Exception => msg
				puts "Error: #{msg}"
			end
		end
	end

	def post_messages
		self.client.direct_messages.each do |message|

			if !is_logged?(message)
				# log message to text file
				log(message)

				# send message to twitter
				begin
					self.client.update("#{message.text} #jeudiconfession")
				rescue Twitter => msg
					puts "Twitter says: #{msg}"
				rescue Exception => msg
					puts "Error: #{msg}"
				end
			else
				puts "Error: message already logged and posted"
			end

			# and destroy twitter message, we keep nothing
			puts "Deleting message #{message.id}"
			self.client.direct_message_destroy(message.id)
		end
	end

	def log(message)
		puts "Logging message: #{message.id}"
		File.open('messages.txt', 'a+') do |f|
		  # use "\n" for two lines of text
		  f.puts "#{message.id} #{message.text}"
		end
	end

	def is_logged?(message)
		ids = []
		File.open('messages.txt', 'r').each_line do |l|
			ids << l.split(' ')[0].to_i
		end
		false ? true : ids.include?(message.id.to_i)
	end

end

# start instance
AutoFollow.new()