GuleSider Min Side Ruby wrapper for sending SMS

gulesider.rb

# encoding: utf-8
require 'mechanize'

class GuleSider
  class NotLoggedInError < StandardError; end

  def self.log_in(username, password)
    agent = Mechanize.new
    agent.ca_file = '/usr/lib/ssl/certs/ca-certificates.crt'

    page = agent.get('https://www.gulesider.no/mypage/loginPopupForm.c')

    form = page.form_with(:action => '/mypage/login.c')

    form.field_with(:name => 'username').value = username
    form.field_with(:name => 'password').value = password

    @@page = form.submit
  end  

  def self.send_sms(recipients, text)
    throw NotLoggedInError.new unless defined?(@@page)

    frame = @@page.iframe_with(:src => '/mypage/sendSmsInline.c').content
    form = frame.form_with(:action => '/mypage/sendSmsInline.c')

    form.field_with(:id => 'mobnr').value = recipients
    form.field_with(:id => 'smstxt').value = text

    form.submit
  end
end