gistfile1

require 'rubygems'
require 'open-uri'
require 'nokogiri'
require 'icalendar'
require 'date'

class RailsSummit
  include Icalendar
  def initialize
    @doc = Nokogiri::HTML(open('http://www.railssummit.com.br/pt-BR/schedule'), nil, 'UTF-8')
    @cal = Calendar.new
    parse!
  end

  def parse!
    @doc.css('table.programacao').each_with_index do |day, index|
      date = Date.parse("2009/10/#{13 + index}")
      day.search('tr').each do |tr|
        cells = tr.search('td')
        next if cells.count == 0
        time = cells.shift.content.strip
        first, second = cells

        if first['colspan'].to_i == 2
          add_event(date, time, first.content.strip)
        else
          add_event(date, time, "Sala A: #{first.content.strip}" )
          add_event(date, time, "Sala B: #{second.content.strip}" )
        end
      end
    end
  end

  def to_s
    @cal.to_ical
  end

  private

  def add_event(date, time, summary)
    from, junk, to = time.split
    event = Event.new
    event.start = DateTime.parse("#{date} #{from}")
    event.end   = DateTime.parse("#{date} #{to}")
    event.summary     = summary
    event.description = summary

    @cal.add_event(event)
  end

end

puts RailsSummit.new