class Doorkeeper::Orm::ActiveRecord::StaleRecordsCleaner

def clean_expired(ttl)
  table = @base_scope.arel_table
  @base_scope.where(table[:created_at].lt(Time.current - ttl))
             .delete_all
end

def clean_revoked
  table = @base_scope.arel_table
  @base_scope.where.not(revoked_at: nil)
             .where(table[:revoked_at].lt(Time.current))
             .delete_all
end

def initialize(base_scope)
  @base_scope = base_scope
end