class ActiveOrm::Redis::SortedSet < ActiveOrm::Redis

  def self.find(key, position, opts = {})
    position -= 1

    value = client.zrange(normalize_key(key), position, position, opts)
    value = value.first
    value = metamorph(value) if evaluate?
    value
  end

  def self.find_score(key, position, opts = {})
    value = client.zrangebyscore(normalize_key(key), position, position, opts)
    value = value.first
    value = metamorph(value) if evaluate?
    value
  end

  def self.first(key, opts = {})
    value = client.zrange(normalize_key(key), 0, 0, opts)
    value = value.first
    value = metamorph(value) if evaluate?
    value
  end

  def self.first_score(key, opts = {})
    value = client.zrangebyscore(normalize_key(key), 1, 1, opts)
    value = value.first
    value = metamorph(value) if evaluate?
    value
  end

  def self.last(key, opts = {})
    value = client.zrevrange(normalize_key(key), 0, 0, opts)
    value = value.first
    value = metamorph(value) if evaluate?
    value
  end

  def self.last_score(key, opts = {})
    value = client.zrevrangebyscore(normalize_key(key), 1, 1, opts)
    value = value.first
    value = metamorph(value) if evaluate?
    value
  end

  def self.between(key, start, finish, opts = {})
    value = client.zrange(normalize_key(key), (start - 1), (finish - 1), opts)
    value = metatransform(value)
    value
  end

  def self.between_reverse(key, start, finish, opts = {})
    value = client.zrevrange(normalize_key(key), (start - 1), (finish - 1), opts)
    value = metatransform(value)
    value
  end

  def self.between_scores(key, min, max, opts = {})
    value = client.zrangebyscore(normalize_key(key), min, max, opts)
    value = metatransform(value)
    value
  end

  def self.between_scores_reverse(key, min, max, opts = {})
    value = client.zrevrangebyscore(normalize_key(key), min, max, opts)
    value = metatransform(value)
    value
  end

  def self.between_lex(key, min, max, opts = {})
    value = client.zrangebylex(normalize_key(key), min, max, opts)
    value = metatransform(value)
    value
  end

  def self.between_lex_reverse(key, min, max, opts = {})
    value = client.zrevrangebylex(normalize_key(key), min, max, opts)
    value = metatransform(value)
    value
  end

  def self.all(key, opts = {})
    value = client.zrange(normalize_key(key), '-inf', '+inf', opts)
    value = metatransform(value)
    value
  end

  def self.position(key, value)
    value = client.zrank(normalize_key(key), value)
    value += 1 unless value.nil?
    value
  end

  def self.position_reverse(key, value)
    value = client.zrevrank(normalize_key(key), value)
    value += 1 unless value.nil?
    value
  end

  def self.score(key, value)
    client.zscore(normalize_key(key), value)
  end

  def self.count(key)
    client.zcard(normalize_key(key))
  end

  def self.count_between(key, min, max)
    client.zcount(normalize_key(key), min, max)
  end

  def self.create(key, *args)
    client.zadd(normalize_key(key), args)
  end

  def self.create_intersection(key, keys, opts = {})
    client.zinterstore(normalize_key(key), keys, opts)
  end

  def self.create_combination(key, keys, opts = {})
    client.zunionstore(normalize_key(key), keys, opts)
  end

  def self.increment(key, value, count)
    client.zincrby(normalize_key(key), count, value)
  end

  def self.destroy(key, at)
    client.zrem(normalize_key(key), at)
  end

  def self.destroy_between(key, start, finish)
    client.zremrangebyrank(normalize_key(key), (start - 1), (finish - 1))
  end

  def self.destroy_scores(key, min, max)
    client.zremrangebyscore(normalize_key(key), min, max)
  end

  def self.destroy_lex(key, min, max, opts = {})
    client.zrevrangebylex(normalize_key(key), max, min, opts)
  end

  def self.scan(key, cursor, opts = {})
    client.zscan(normalize_key(key), cursor, opts)
  end

end