class LocalEmail < Email

=begin
  validate :unique_on_server
  validate :unique_alias_for_user
  validate :differs_from_login
=end

  def self.domain
    APP_CONFIG[:domain]
  end

  validates :email,
    :format => {
      :with => /@#{domain}\Z/i,
      :message => "needs to end in @#{domain}"
    }



  def initialize(s)
    super
    append_domain_if_needed
  end

  def to_key
    [handle]
  end

  def handle
    gsub(/@#{domain}/i, '')
  end

  def domain
    LocalEmail.domain
  end

  protected

  def unique_on_server
    has_email = User.find_by_login_or_alias(username)
    if has_email && has_email != self.casted_by
      errors.add :username, "has already been taken"
    end
  end

  def unique_alias_for_user
    aliases = self.casted_by.email_aliases
    if aliases.select{|a|a.username == self.username}.count > 1
      errors.add :username, "is already your alias"
    end
  end

  def differs_from_login
    # If this has not changed but the email let's mark the email invalid instead.
    return if self.persisted?
    user = self.casted_by
    if user.login == self.username
      errors.add :username, "may not be the same as your email address"
    end
  end

  def append_domain_if_needed
    unless self.index('@')
      self << '@' + domain
    end
  end

end