#
# A Composition of a User record and it's identity records.
#
class Account

  attr_reader :user

  def initialize(user = nil)
    @user = user
  end

  # Returns the user record so it can be used in views.
  def self.create(attrs)
    @user = User.create(attrs).tap do |user|
      Identity.create_for user
    end
  end

  def update(attrs)
    if attrs[:password_verifier].present?
      update_login(attrs[:login])
      @user.update_attributes attrs.slice(:password_verifier, :password_salt)
    end
    # TODO: move into identity controller
    update_pgp_key(attrs[:public_key]) if attrs.has_key? :public_key
    @user.save && save_identities
    @user.refresh_identity
  end

  def destroy
    return unless @user
    Identity.by_user_id.key(@user.id).each do |identity|
      identity.destroy
    end
    @user.destroy
  end

  protected

  def update_login(login)
    return unless login.present?
    @old_identity = Identity.for(@user)
    @user.login = login
    @new_identity = Identity.for(@user) # based on the new login
    @old_identity.destination = @user.email_address # alias old -> new
  end

  def update_pgp_key(key)
    @new_identity ||= Identity.for(@user)
    @new_identity.set_key(:pgp, key)
  end

  def save_identities
    @new_identity.try(:save) && @old_identity.try(:save)
  end

end