class User
  attr_accessor :used_attempts, :used_hints
  attr_reader :name

  def initialize(name)
    return unless valid?(name)

    @name = name
    @used_attempts = 0
    @used_hints = 0
  end

  private

  def valid?(name)
    return true if name.match(/[A-Za-z0-9_]{3,20}/)

    false
  end
end