class PopconResult

  include Comparable

  attr_reader :recent, :old, :vote, :unknown

  def initialize(vote, old, recent, unknown)
    @vote = vote
    @old = old
    @recent = recent
    @unknown = unknown
  end

  def installed
    @recent + @old + @vote + @unknown
  end

  def users
    @recent + @old + @vote
  end

  def usage(total = 1)
    t = Float(@vote + @recent) / Float(@recent + @old + @vote)
    t.nan? ? 0.0 : t * total
  end

  def <=>(item)
    self.usage <=> item.usage
  end
end

class Popcon
  include Enumerable

  attr_accessor :total

  def initialize(resultsfile, totalpackages = 11000)
    @data = {}
    @total = totalpackages
    File.open(resultsfile) { |f|
      f.each_line { |line|
	parts = line.split(/\s+/)
	@data[parts[0]] = PopconResult.new(parts[1].to_i, parts[2].to_i,
					   parts[3].to_i, parts[4].to_i)
      }
    }
  end

  def sort
    @data.sort { |a,b| a[1] <=> b[1] }
  end

  def method_missing(f, *args, &func)
    if @data.respond_to? f
      @data.__send__(f, *args, &func)
    else
      super
    end
  end
end