class Assignment
  def transfer(person_id: nil)
    random = false
    if !person_id
      person_id = get_random_person.id
      random = true
    end

  @thing.update(assignee: person_id)
  rescue NotFound
    transfer(get_random_person(refresh: true).id)
  end

  private

  def get_random_person(refresh: false)
    @person = nil if refresh

    @person ||= begin
      RandomPerson.new
    end
  end
end