root/lang/ruby/misc/twitter_remove_friends/twitter_remove_friends_json.rb

#!/usr/bin/env ruby

require 'open-uri'
require 'net/https'
require 'yaml'
require 'pathname'
require 'rubygems'
require 'pit'
require 'json'

Net::HTTP.version_1_2

TWITTER_API = URI("http://twitter.com/")

twitter_account = Pit.get(TWITTER_API.host, :require => {
        :username => 'Please set your username for Twitter.',
        :password => 'Please set your password for Twitter.',
})

followers = []
begin
        page = 1
        yaml = YAML.load(Pathname.new(ARGV[0] || "defaults.yaml").expand_path.read)

        loop do
                json = JSON.parse(open(TWITTER_API + "statuses/friends.json?page=#{page}", :http_basic_authentication => [twitter_account[:username], twitter_account[:password]]).read)
                break if json.empty?

                json.each do |user|
                        next if user["status"].nil?
                        duration = Time.now - Time.parse(user["status"]["created_at"])
                        followers << user["screen_name"] if duration > yaml["duration"].to_i * 24 * 60 * 60
                end

                page += 1
                sleep(5)
        end

        puts "remove users: #{followers.join(" ")}"

        followers.each do |name|
                req = Net::HTTP::Delete.new( "#{TWITTER_API.path}friendships/destroy/#{name}.json", '' )
                req.basic_auth twitter_account[:username], twitter_account[:password]
                http = Net::HTTP.new( TWITTER_API.host, TWITTER_API.port )
                if TWITTER_API.scheme == "https"
                        http.use_ssl = true
                        http.verify_mode = OpenSSL::SSL::VERIFY_NONE # OOPS!
                end
                http.start do
                        response = http.request(req)
                        case response
                        when Net::HTTPOK # 200
                                puts "#{name} is removed."
                        when Net::HTTPBadRequest # 400
                                puts "BAD REQUEST: #{name}"
                        end
                end
                sleep(15)
        end
rescue => e
        puts e
end