class ArgentineHolidays

# File lib/argentine_holidays.rb, line 8
def self.between(from, to)
  (from..to).collect {|i| i.year }.uniq.each do |year|
    fetch(year)
  end
  return @@dates.select {|d| (from..to).include? d }
end

# File lib/argentine_holidays.rb, line 14
def self.fetch(year)
  unless defined? @@dates
    @@dates = [] 
  end

  unless @@dates.any? {|i| i.year == year.to_i }
    begin
      doc = Nokogiri::HTML(open("http://www.mininterior.gov.ar/asuntos_politicos_y_alectorales/dinap/feriados/feriados#{year}.php"))
    rescue OpenURI::HTTPError
      return []
    end
      tables = doc.css('div#info table')
  

    # Non-movable
    tables[0].css('tr')[1..-1].each {|i| 
      @@dates += parse_date(i.children[1].text, year)
    }

    # Movable
    tables[1].css('tr')[1..-1].each {|i| 
      @@dates += parse_date(i.children[3].text, year)
    }
    @@dates.sort!
  end
    
  return @@dates.select {|i| i.year == year }
end

# File lib/argentine_holidays.rb, line 43
def self.parse_date(date, year)

  month = MONTHS.index {|i| /#{i}/ === date }
  if month
    month += 1
    days = date.scan(/[0-9]{1,2}/)
    return days.collect {|day| Date.new(year, month, day.to_i)}
  else
    return []
  end
end