class Customer < ActiveRecord::Base

	##--- Associaciones
	belongs_to :contact
	has_one :billing_information
	has_many :sales
	has_many :special_prices
	has_many :pre_sales
	has_many :credits
	has_many :credit_payments, :through => :credits
	accepts_nested_attributes_for :contact, :reject_if => :all_blank
	accepts_nested_attributes_for :billing_information, :reject_if => :all_blank
	
	enum status: [ :erased, :active, :inactive, :debtor ]

	##--- Llevar registro de Actividad del usuario
	audited 

	##--- Validaciones previas de guardar
	validates_presence_of :nick_name, message: "Debe capturar el nombre."
	# validates_presence_of :phone, message: "Debe capturar el teléfono."
	# validates_presence_of :email, message: "Debe capturar el correo electrónico de la Empresa."
	validates_format_of :email, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i ,message: "El formato del correo electrónico es inválido", :allow_blank => true
	validates :credit_limit, :numericality => { :only_integer => false, :message => "El limite de crédito debe ser numérico.", allow_nil: true }
	validates :time_limit, :numericality => { :only_integer => true, :message => "El liempo limite debe especificarse en dias.", allow_nil: true }

	##--- Tipo de vistas / consultas
	scope :vigentes, -> { where( "status != 0").order(" status ASC, nick_name ASC") }
	scope :credito, -> { where("status !=0 and credit = true").order("nick_name ASC")}
	
	before_save do
		if !self.credit
			self.credit_limit = 0
			self.time_limit = 0
		end
	end
	
	def verify_credit
		time = 0
		
		time = self.created_at + self.time_limit.days
			if time.to_date < Date.today && self.credit == true
				self.update_attributes(:status => :debtor)
				self.update_attributes(:credit => false)
			end
		return self
	end

	def get_debiting
		debiting = 0
		self.credits.activos.each do |credit|
		 	debiting = debiting + credit.rest
		 end
	 	return debiting
	end

	def sale_approved?(amount)
		puts "cantidad de nuevo credito: #{amount}"
		puts "limite de credito: #{credit_limit}"
		if amount > credit_limit 
			puts "venta no aprobada"
			false
		else
			puts "venta aprobada"
			true
		end
	end

	def self.get_customers_under_limit
		customers = Array.new
		Customer.vigentes.each do |customer|
			if customer.credit_limit > customer.get_debiting
				customers << customer
			end
		end
		return customers
	end
end