score.rb

  def self.score(obj)
    up_votes_weight = 0
    for vote in obj.votes.up_votes # recent votes on older posts have more weight
      up_votes_weight += ((vote.created_at.to_date - obj.created_at.to_date).to_i / 2) + 1
    end # plus one for votes on recent posts to still get valued
    _score = (up_votes_weight + (obj.comments.size / 2)) -
      ((obj.votes.down_votes.size.to_i * 2) + (Date.today - obj.created_at.to_date).to_i)
    return _score
    # also needs to check for clusters of recent votes, giving more
    # weight to recent posts that are closer together in time, "hotness"
  end