# frozen_string_literal: true class DraftSequence < ActiveRecord::Base def self.next!(user, key) return nil if !user user_id = user user_id = user.id unless user.is_a?(Integer) return 0 if !User.human_user_id?(user_id) sequence = DB.query_single(<<~SQL, user_id: user_id, draft_key: key).first INSERT INTO draft_sequences (user_id, draft_key, sequence) VALUES (:user_id, :draft_key, 1) ON CONFLICT (user_id, draft_key) DO UPDATE SET sequence = draft_sequences.sequence + 1 WHERE draft_sequences.user_id = :user_id AND draft_sequences.draft_key = :draft_key RETURNING sequence SQL Draft.where(user_id: user_id).where(draft_key: key).where("sequence < ?", sequence).destroy_all UserStat.update_draft_count(user_id) sequence end def self.current(user, key) return nil if !user user_id = user user_id = user.id unless user.is_a?(Integer) return 0 if !User.human_user_id?(user_id) # perf critical path r, _ = DB.query_single( "select sequence from draft_sequences where user_id = ? and draft_key = ?", user_id, key, ) r.to_i end end # == Schema Information # # Table name: draft_sequences # # id :integer not null, primary key # user_id :integer not null # draft_key :string not null # sequence :bigint not null # # Indexes # # index_draft_sequences_on_user_id_and_draft_key (user_id,draft_key) UNIQUE #