module Docsis
  class DhcpLog < Docsis::ApplicationRecord

    self.table_name = :dhcp_log
    self.primary_key = false


    self.store_full_sti_class = false

    after_initialize :readonly!

    scope :ack,   -> {where(sending: :ack)}
    scope :nak,   -> {where(sending: :nak)}
    scope :offer, -> {where(sending: :offer)}
    scope :q_ack, -> {where(sending: :q_ack)}
    scope :q_nak, -> {where(sending: :q_nak)}

    enum sending: {
        ack: 'ACK',
        nak: 'NAK',
        offer: 'OFFER',
        q_ack: 'Q_ACK',
        q_nak: 'Q_NAK'
    }
    enum type: {
        CM: 'CM',
        CPE: 'CPE',
        MTA: 'MTA',
        'NO-AUTH': 'NO-AUTH'
    }
    enum dynamic_flag: {
        yes: 'YES' ,
        no: 'NO'
    }, _prefix: :dynamic_flag
    enum mcache_flag: {
        yes: 'YES',
        no: 'NO'
    }, _prefix: :mcache_flag

    def modem_macaddr
      macaddr_ntoa(b_modem_macaddr)
    end

    def macaddr
      macaddr_ntoa(b_macaddr)
    end

    def ipaddr
      IPAddr.new(b_ipaddr, Socket::AF_INET).to_s
    end

    # Return Docsis::Modem corresponding to this log entry
    def modem
      Docsis::Modem.find(modem_macaddr)
    end

    protected


    def self.sti_name
      case self.name.demodulize
        when 'ModemLog'
          'CM'
        when 'CustomerPremisesEquipmentLog'
          'CPE'
        when 'MultimediaTerminalAdapterLog'
          'MTA'
        else
          super
      end
    end


    def self.compute_type(type_name) # :nodoc
      case type_name
        when 'CM'
          ModemLog
        when 'CPE'
          CustomerPremisesEquipmentLog
        when 'MTA'
          MultimediaTerminalAdapterLog
        else
          super
      end
    end


    private


    def macaddr_ntoa(b_addr)
      MacAddress.new('%012X' % b_addr).to_s
    end


  end

end