Simyo invoice downloader

simyo.rb

#!/usr/bin/env ruby

USAGE = <<EOF
Usage: simyo.rb <Simyo web login password>

Downloads the latest invoice available on the Simyo web page.
EOF

require 'watir'
require 'rautomation'

module RAutomation
  module Adapter
    module WinFfi
      class KeystrokeConverter
        class << self
          alias_method :old_convert_special_characters, :convert_special_characters

          # WinFfi automation doesn't support sending Shift+Tab, so we need to path the parser to send
          # {TAB} as Shift+Tab and
          # {tab} as Tab.
          def convert_special_characters chars
            r = old_convert_special_characters chars
            if chars =~ /[A-Z]/
              r = [Constants::VK_LSHIFT] << r
            end
            r
          end
        end
      end
    end
  end
end

module Simyo
  class Downloader
    @browser
    @phone_number
    @password
    
    def initialize(phone_number, password)
      @phone_number = phone_number
      @password = password
    end
    
    def browser
      @browser ||= Watir::Browser.new
    end
    
    def download_invoice
      login
      display_invoices
      download_latest_invoice
      logout
    end
    
    def login
      browser.goto 'https://www.simyo.de/anmelden.html'
      form = browser.forms(:action => /anmelden.html/).last
      form.text_field(:name => /-login$/).set @phone_number
      form.text_field(:name => /-password$/).set @password
      form.button(:name => /-loginButton$/).click
    end
    
    def display_invoices
      browser.goto 'https://www.simyo.de/mein-simyo/rechnungen.html'
    end
    
    def download_latest_invoice
      invoices = browser.table(:class, /dataTable/)
      download = invoices.buttons(:src, /download/).first
      invoice_date = Date.parse download.parent.parent.cells.first.text
      
      download.click!
      
      save_invoice_as_pdf_using_IE invoice_date
    end
    
    def save_invoice_as_pdf_using_IE(invoice_date)
      # Click on 'Save As' in the download bar at the bottom
      sleep(1)
      ie = RAutomation::Window.new(:hwnd => browser.hwnd)

      # {UPCASE} = Shift + upcase
      3.times do ie.send_keys '{TAB}' end
      2.times do ie.send_keys '{down}' end
      ie.send_keys '{enter}'
      
      # Popup window to save
      save_as = RAutomation::Window.new(:title => /Save As|Speichern unter/)
      save_as.text_field(:class => "Edit", :index => 0).set "#{invoice_date} Simyo #{@phone_number}"

      save_as.button(:value => /&Save|&Speichern/).click
    end
    
    def logout
      browser.button(:class => /logoutLink/).click
      browser.close
    end
  end
end

if ARGV.delete("--help") || ARGV.delete("-h")
  puts USAGE
  exit
end

phone_numbers = ['491637178546', '491631612432']
password = ARGV.shift

if password.nil?
  puts USAGE
  exit 1
end

phone_numbers.each do |phone|
  Simyo::Downloader.new(phone, password).download_invoice 
end