get amount of used data from my docomo

#!/usr/local/bin/ruby
# coding: utf-8
print "Content-type: text\n\n";

require 'nokogiri'
require 'mechanize'
require 'pg'
require 'json'
require 'net/http'
require 'uri'

# your my docomo login id and password
loginid = ""
password = ""

agent = Mechanize.new
agent.user_agent_alias = 'iPhone'
agent.follow_meta_refresh = true
agent.redirect_ok = true
agent.redirection_limit=10
agent.get('https://www.mydocomo.com/dcm/dfw/web/portal/pub2/MYDPS-TR0001.do?xcid=MYD_esite_data_traffic_volume_check_from_CRP_MYD_charge') do |page|

  mypage = page.form_with(id: 'DiForm') do |form|
    form.authid = loginid
    form.authpass = password
  end.submit

  doc = Nokogiri::HTML(mypage.content.toutf8)

  pageRedirect01 = agent.get('https://payment2.smt.docomo.ne.jp/smph/charges/gkyap003.srv?Xitraffic=1')

  used = pageRedirect01.content.toutf8.gsub(/(\s)/,"").match(/当月\(.*?年.*?月\)<\/p><pclass="arrange-rboldmb_5">(.+?)GB/)
  allowedPacket = pageRedirect01.content.toutf8.gsub(/(\s)/,"").match(/<br>パケットパック:(.+?)GB<br>/)
  remainedPacket = pageRedirect01.content.toutf8.gsub(/(\s)/,"").match(/前月残りデータ量:(.+?)GB<br>/)

  today = Date.today
  dum = Date.new(2017, today.month, -1)
  enddate = Date.new(today.year, today.month, dum.mday)

  message = "";

  message += "本日：" + today.strftime("%Y/%m/%d") + "\n"
  message += "締日：" + enddate.strftime("%Y/%m/%d") + "\n"
  message += "残り：" + (enddate - today + 1).to_i.to_s + "日" + "\n"

  ave = (used[1].to_f / today.mday.to_f).round(2)
  message += "基本：" + allowedPacket[1].to_f.round(2).to_s + "GB\n"
  message += "繰越：" + remainedPacket[1].to_f.round(2).to_s + "GB\n"
  message += "使用：" + used[1] + "GB" + "\n"
  message += "残り：" + (allowedPacket[1].to_f + remainedPacket[1].to_f - used[1].to_f).to_s + "GB\n"
  message += "平均：" + ave.to_s + "GB" + "\n"

  maxDateThisMonth = dum.mday

  if ave * maxDateThisMonth > (allowedPacket[1].to_f + remainedPacket[1].to_f) then
    willOverDate = ((allowedPacket[1].to_f + remainedPacket[1].to_f) / ave + 1).to_i
    message += "このペースだと" + willOverDate.to_s + "日にオーバーします"
  else
    message += "このペースだと" + ((allowedPacket[1].to_f + remainedPacket[1].to_f) - ave * maxDateThisMonth).round(2).to_s + "GB余ります"
  end

  resultJson = JSON.generate({"message" => message})
  puts resultJson

  url = URI.parse("https://notify-api.line.me/api/notify")
  request = Net::HTTP::Post.new(url)
  request["Authorization"] = "Bearer YOUR_ACCESS_TOKEN"

  request.set_form_data(message: message)
  response = Net::HTTP.start(url.hostname, url.port, use_ssl: url.scheme == "https") do |https|
      https.request(request)
  end
  puts response.code
  puts response.body

end