phone_number.rb

# encoding: utf-8
module Iceleres
  class PhoneNumber
    include EnumerateIt
    include ActiveModel::Validations

    ATTRIBUTES = [:area_code, :number, :type, :validation]
    PHONE_FORMAT = /^[1-9]\d{3}[-\s]?\d{4}/

      attr_accessor *ATTRIBUTES

    class Type < EnumerateIt::Base
      associate_values(
        :mobile => 1,
        :work   => 2,
        :home   => 3
      )
    end

    has_enumeration_for :type, :with => Type, :create_helpers => true

    validate :validate_number_and_area_code, :if => lambda { self.validation }
    validate :validate_format

    def initialize(attributes)
      attributes.assert_valid_keys ATTRIBUTES
      attributes.each { |key, val| self.send("#{key}=", val) }
    end

    def formatted
      area_code_str = area_code.present? ? "(#{area_code})" : nil
      [area_code_str, number].compact.join " "
    end

    def validate_format
      phone_fields = [:area_code, :number]

      phone_fields.map do |field|
        unless field.blank?
          errors.add(field, :invalid) unless field =~ PHONE_FORMAT
        end
      end
    end

    def validate_number_and_area_code
      phone_fields = [area_code, number]

      if [phone_fields].all? { |fields| fields.any? &:blank? }
        name = Iceleres::PhoneNumber::Type.t(self.type).downcase
        errors.add :base, :no_phone_number_or_area_code
      end
    end
  end