Roomarama Test Exercise

user.rb

class User < ActiveRecord::Base

  MAGIC_NUMBER = 3
  VALIDCHARS = 'abcdefghjkmnpqrstuvwxyzABCDEFGJKMNPQRSTUVWXYZ23456789'

  has_many :host_inquiries, class_name: 'Inquiry', foreign_key: 'host_id'

  validates :password, presence: true
  
  before_save :create_new_password
  after_save :certify_if_needed, unless: -> { certified }


  private 
  
  def certify_if_needed
    inquiries = Inquiry.where("host_id = ? AND status IN (?, ?)", id, (Inquiry.statusLookup['STATUS_ROOMORAMA_TO_PAY'],
                                                     Inquiry.statusLookup['STATUS_PAYMENT_COMPLETE'])).limit(MAGIC_NUMBER)
                                                   
    update(certified: true) if !inquiries.blank? && inquiries.length >= MAGIC_NUMBER

    return true
  end
  
  def create_new_password
    newpass = []
    8.times do
      r = rand(VALIDCHARS.length)
      newpass << VALIDCHARS[r..r]
    end
    self.password = newpass.join()
  end
  
end