Class: Halffare::Fetch

Inherits:
Object
  • Object
show all
Defined in:
lib/halffare/fetch.rb

Constant Summary collapse

USER_AGENT = 
'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11'
URL_LOGIN = 
'http://www.sbb.ch/meta/login.html'
URL_ORDERS = 
'https://www.sbb.ch/ticketshop/b2c/dossierListe.do'
ORDER_NOTE_FILE_CREATED = 
'halffare-orders-file-created'

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Fetch

Returns a new instance of Fetch.



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# File 'lib/halffare/fetch.rb', line 9

def initialize()
  @agent = ::Mechanize.new
  @agent.user_agent = USER_AGENT
end

Instance Method Details

#download(filename, pages, months) ⇒ Object 



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# File 'lib/halffare/fetch.rb', line 30

def download(filename, pages, months)
  @response = @agent.get URL_ORDERS

  logged_in!

  begin
    left = pages.to_i
    page = 1
    stop_after = months ? (Date.today << months.to_i).strftime('%Y-%m-%d') : nil

    log_info "will stop scraping after reaching #{stop_after}" unless stop_after.nil?
    log_info "writing data to #{filename}"

    file = File.open(filename, "w")
    oldest_date_on_page = Date.today.strftime

    # fake entry so when evaluating this file the calculation goes up until today
    # and not to the last order.
    file.write "#{oldest_date_on_page}|#{oldest_date_on_page}|0|#{ORDER_NOTE_FILE_CREATED}|\n"

    loop do
      print ">>> page #{page}/#{pages} "
      orders do |idx, travel_date, order_date, price, note, name|
        print "."

        travel_date = Date.parse(travel_date).strftime
        order_date = Date.parse(order_date).strftime
        oldest_date_on_page = [order_date, oldest_date_on_page].min

        file.write "#{travel_date}|#{order_date}|#{price}|#{note}|#{name}\n" if stop_after.nil? || travel_date >= stop_after
      end
      puts
      next!

      log_debug "oldest order on page was on #{oldest_date_on_page}" if Halffare.debug

      page += 1
      left -= 1

      break if !stop_after.nil? && oldest_date_on_page < stop_after
      break if left <= 0
    end
  rescue IOError => e
    puts e
  ensure
    file.close unless file == nil
  end
end

#login(username, password) ⇒ Object 



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# File 'lib/halffare/fetch.rb', line 14

def (username, password)
  username = ask("sbb.ch username?  ") unless username
  password = ask("sbb.ch password?  ") { |q| q.echo = "*" } unless password
  log_info "logging in..."

  #@agent.log = Logger.new('debug.log')

  @response = @agent.get URL_LOGIN

   = @response.forms.first
  ['logon.username'] = username
  ['logon.password'] = password

  @response = @agent.submit()
end