# encoding: utf-8

module Okei

  # Stores and validates units of measure
  class Unit < ActiveRecord::Base

    UUID_FORMAT = /\A[\d|a-f]{8}-([\d|a-f]{4}-){3}[\d|a-f]{12}\z/
    NUM_FORMAT  = /\A\d{3}\z/

    validates :uuid, :code, :name, :base, :factor, :measure, presence: true
    validates :uuid, :code, :name, uniqueness: true, allow_nil: true
    validates :factor, allow_nil: true, numericality: { greater_than: 0.0 }
    validates :num,    allow_nil: true, format: { with: NUM_FORMAT }
    validates :uuid,   allow_nil: true, format: { with: UUID_FORMAT }
  end
end