class <%= @model_name %> < CouchRest::Model::Base

attr_accessor :password, :password_confirmation

# Properties
property :name
property :surname
property :email
property :crypted_password
property :role

view_by :email

# Validations
validates_presence_of     :email, :role
validates_presence_of     :password,                   :if => :password_required
validates_presence_of     :password_confirmation,      :if => :password_required
validates_length_of       :password, :within => 4..40, :if => :password_required
validates_confirmation_of :password,                   :if => :password_required
validates_length_of       :email,    :within => 3..100
validates_format_of       :email,    :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i
validates_format_of       :role,     :with => /[A-Za-z]/
validate                  :unique_email_validator

# Callbacks
after_validation :encrypt_password, :if => :password_required

##
# This method is for authentication purpose.
#
def self.authenticate(email, password)
  account = find_by_email(email)
  account if account && account.has_password?(password)
end

def has_password?(password)
  ::BCrypt::Password.new(crypted_password) == password
end

##
# This method is used by AuthenticationHelper.
#
def self.find_by_id(id)
  get(id)
end

private

def encrypt_password
  self.crypted_password = ::BCrypt::Password.create(password)
end

def password_required
  crypted_password.blank? || password.present?
end

def unique_email_validator
  account = self.class.find_by_email(email)

  # Didn't find email in the database.
  return if account.nil?

  # Account with same email in database is this account.
  return if has_key?('_id') && self['_id'] == account['_id']

  errors.add(:email, "is not unique")
end

end