check tumblr followers and followings. work with mechanize 0.9.0

check_followers.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'mechanize'
require 'cgi'

email = ''
password = ''

email, password = ARGV
#version < 1.8.7 対策
if RUBY_VERSION < '1.8.7'
  class Object
    def tap
      yield(self)
      self
    end
  end
end

module Tumblr
  class Dashboard
    PREFIX = 'http://www.tumblr.com/dashboard/iframe?src='
    attr_reader :followers, :followings
    def initialize(email, password)
      @email = email
      @password = password
      @agent = WWW::Mechanize.new
      login
    end

    def login
      @agent.get('http://www.tumblr.com/login')
      @agent.page.form_with(:action => '/login') do |f|
        f.field_with(:name => 'email').value =  @email
        f.field_with(:name => 'password').value = @password
        f.click_button
      end
    end

    def logout
      @agent.get('http://www.tumblr.com/logout')
    end

    def get_followers
      doc = @agent.get('http://www.tumblr.com/followers')
      @followers = doc.search('a.username')
    end

    def get_followings
      doc = @agent.get('http://www.tumblr.com/following')
      @followings = doc.search('a.username')
    end

    def check
      get_followers
      get_followings
      temp = @followings.map{|a| a.inner_text}.sort
      @followers.inject([]) do |memo, a|
        if(temp.index(a.inner_text) == nil) then
          memo.push(a)
        end
        memo
      end.tap do |a|
        p "follow #{a.size} users"
      end.each do |a|
        print "#{a.inner_text}..."
        doc = @agent.get(PREFIX+CGI.escape(a.attributes['href'].value))
        form = doc.forms.first
        form && form.click_button
        p "done"
      end
      #logout
    end
  end
end

dashboard = Tumblr::Dashboard.new email, password
dashboard.check