class Assignment
  def transfer(person_id: nil, attempt: 0)   
    random = false

    if !person_id
      person_id = get_random_person.id
      random = true
    end

    @thing.update(assignee: person_id)
  rescue NotFound
    raise 'Person not found' if !random

    attempt += 1
    raise if attempt > 3

    new_person = get_random_person(refresh: true)

    transfer(
      person_id: new_person.id,
      attempt: attempt
    )
  end

  private

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

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