class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :trackable, :timeoutable
  # TODO: Foreign user will get email with activation link,email,temp-password.
  # After activisation, system should require to change temp password.
  # TODO: Estonian id validation

  belongs_to :role
  belongs_to :registrar
  belongs_to :country

  validates :username, :password, presence: true
  validates :identity_code, uniqueness: true, allow_blank: true
  validates :identity_code, presence: true, if: -> { country.iso == 'EE' }
  validates :email, presence: true, if: -> { country.iso != 'EE' }
  validates :registrar, presence: true, if: -> { !admin }

  validate :validate_identity_code

  before_save -> { self.registrar = nil if admin? }

  attr_accessor :registrar_typeahead

  def to_s
    username
  end

  def registrar_typeahead
    @registrar_typeahead || registrar || nil
  end

  private

  def validate_identity_code
    return unless identity_code.present?
    code = Isikukood.new(identity_code)
    errors.add(:identity_code, :invalid) unless code.valid?
  end
end