# A study_subject's phone number
class PhoneNumber < ActiveRecordShared

	acts_as_list :scope => :study_subject_id
	default_scope :order => :position

	belongs_to :study_subject
	belongs_to :phone_type
	belongs_to :data_source

	#	TODO test this.  Also may not need current_user now.
#	This works in the console and such, but ActiveScaffold tries
#	to use it in a join, but it is in a different database so fails.
#	May be able to make it work in AS, but need to fiddle.
#	belongs_to :verified_by, :foreign_key => 'verified_by_uid',
#		:class_name => 'User', :primary_key => 'uid'

	delegate :is_other?, :to => :data_source, :allow_nil => true, :prefix => true

	validates_presence_of :phone_number

	validates_presence_of :phone_type_id
	validates_presence_of :phone_type, :if => :phone_type_id

	validates_presence_of :why_invalid,       :if => :is_not_valid?
	validates_presence_of :how_verified,      :if => :is_verified?
	validates_presence_of :data_source_other, :if => :data_source_is_other?
	validates_length_of   :why_invalid,  :maximum => 250, :allow_blank => true
	validates_length_of   :how_verified, :maximum => 250, :allow_blank => true

	#	Want to ensure contains 10 digits.
	#	I'm kinda surprised that this regex works.
	validates_format_of   :phone_number, :with => /\A(\D*\d\D*){10}\z/,
		:allow_blank => true




	attr_protected :study_subject_id, :study_subject




	validates_inclusion_of :current_phone, :is_valid,
			:in => YNDK.valid_values, :allow_nil => true


	named_scope :current, :conditions => [
		'current_phone IS NOT NULL AND current_phone != 2'
	]

	named_scope :historic, :conditions => [
		'current_phone IS NULL OR current_phone = 2'
	]

	before_save :format_phone_number, :if => :phone_number_changed?

	before_save :set_verifier, 
		:if => :is_verified?, 
		:unless => :is_verified_was

	before_save :nullify_verifier, 
		:unless => :is_verified?,
		:if => :is_verified_was

	attr_accessor :current_user

	#	Returns description
	def to_s
		phone_number
	end

	#	Returns boolean of comparison
	#	true only if is_valid == 2 or 999
	#	Beware of strings from forms
	#	Rails SHOULD convert incoming string params to integer.
	def is_not_valid?
#		[2,999].include?(is_valid.to_i)
		[2,999].include?(is_valid)
	end

protected

	#	Set verified time and user if given
	def set_verifier
		self.verified_on = Time.now
		self.verified_by_uid = current_user.try(:uid)||''
	end

	#	Unset verified time and user
	def nullify_verifier
		self.verified_on = nil
		self.verified_by_uid = nil
	end

	#	Formats phone numer with () and -
	def format_phone_number
		unless self.phone_number.nil?
			old = self.phone_number.gsub(/\D/,'')
			new_phone = "(#{old[0..2]}) #{old[3..5]}-#{old[6..9]}"
			self.phone_number = new_phone
		end
	end

end