Script para ver el estado de una cuenta del banco Itaú Uruguay

guita.rb

#!/usr/local/bin/ruby
# encoding: UTF-8

require 'rubygems'

gem 'mechanize'
gem 'main'
gem 'highline'
gem 'money'
gem 'change_watcher'

require 'mechanize'
require 'main'
require 'highline/import'
require 'money'
require 'ostruct'
require 'change_watcher'

class ItauScraper
  def initialize(ci, pass)
    @ci = ci
    @pass = pass
  end

  def balance
    return nil if dashboard.nil?
    pesos = dashboard.search(".//td[./font[contains(.,'Pesos')]]/following-sibling::*").first.text.strip
    dollars = dashboard.search(".//td[./font[contains(.,'lares')]]/following-sibling::*").first.text.strip

    pesos_as_money = "#{pesos} UYU".to_money
    dollars_as_money = "#{dollars} USD".to_money

    OpenStruct.new pesos_as_money.currency.to_s.downcase.to_sym => pesos_as_money, dollars_as_money.currency.to_s.downcase.to_sym => dollars_as_money
  end

  def logout
    agent.get(itaurl)
  end

private
  def itaurl
    "https://www.itaulink.com.uy/appl/index.jsp"
  end

  def agent
    return @agent if @agent

    @agent = ::Mechanize.new do |agent|
      agent.user_agent_alias = "Windows IE 7"
    end
  end

  def dashboard
    return @dashboard if @dashboard

    login_page = agent.get(itaurl)
    login_form = login_page.form_with(:name => "form1")
    return nil if login_form.nil?
    login_form.set_fields(:nro_documento => @ci, :password => @pass)
    @dashboard = login_form.submit
  end
end

def with_progress(message = nil, done_message = nil, &work)
  print "#{message}" if message
  finished = false
  progress_thread = Thread.new { until finished; print "."; $stdout.flush; sleep 0.5; end; }
  result = nil

  work_thread = Thread.new(binding()) do |b|
    result = work.call
    finished = true
  end

  work_thread.join
  progress_thread.join
  say "\n#{done_message}"
  result
end

HighLine.track_eof = false

Main do
  CI_REGEXP = /\d+/

  keyword('ci') do
    validate{|foo| foo =~ CI_REGEXP}
    description "Cédula de identidad con guión incluido y sin puntos (1234567-8)"
  end
  
  def run
    ci = params['ci'].value || ask("Cédula?: "){|q| q.validate = CI_REGEXP}
    pass = ask("Contraseña? (no se muestra): ") do |q|
      q.echo = false
      q.validate {|c| c.size <= 8 }
    end

    itau = ItauScraper.new(ci, pass)
    balance = with_progress("Iniciando sesión"){ itau.balance }

    if balance.nil?
      say("No se pudo acceder a su cuenta. Probablemente la página esté fuera de servicio")
    else
      say("  Pesos: <%= color('#{balance.uyu}', #{balance.uyu.cents < 0 ? 'RED' : 'GREEN'}, BOLD)%>") if balance.uyu
      say("  Dólares: <%= color('#{balance.usd}', #{balance.usd.cents < 0 ? 'RED' : 'GREEN'}, BOLD)%>") if balance.usd

      with_progress("Cerrando sesión"){ itau.logout }

      ChangeWatcher.new do
        data_to_watch do
          balance.usd.cents
        end

        store_changes_in "~/.balance_dolares"
      end.check_for_change
    end
  end
end