class Phonebook < ActiveRecord::Base
  belongs_to :user

  validates_format_of :number, :with => /\A\d+\Z/, :message => _('Phonebook_number_must_be_numeric')
  validates_format_of :speeddial, :with => /\A\d+\Z/, :message => _('Speeddial_must_be_numeric')
  validates_length_of :speeddial, :minimum => 2, :message => _('Speeddial_can_only_be_2_and_more_digits')
  before_save :validate_speeddial_uniqueness

  def Phonebook.user_phonebooks(user)
    Phonebook.find(:all, :conditions => "(user_id = #{user.id} or user_id = 0) AND card_id = 0", :order => "name ASC")
  end

  private
=begin
  Phonebooks speeddial mus be unique for each user, but we have to remember that
  admin's phonebooks are global, so setting unique on user_id and speeddial is not 
  an option - speeddial has to be unique for phonebooks user and for admin.
  If phonebook is beeing updated(it has id) we should exclude information about it. 
  In case phonebooks owner is admin phonebooks must be globay unique, hence there is 
  no other condition, except for excluding phonebook itself(if it's already created) 
=end
  def validate_speeddial_uniqueness
    condition = "speeddial = '#{self.speeddial}'"
    if self.user.is_admin?
      if self.id
        condition += " AND id != #{self.id}"
      end
    else
      condition += " AND user_id IN (0, #{user.id})"
      if self.id
        condition += " AND id != #{self.id}"
      end
    end
    count = Phonebook.count(:conditions => condition)
    if count == 0
      return true
    else
      errors.add(:speeddial, _('Speed_dial_must_be_unique'))
      return false
    end
  end
end