# frozen_string_literal: true

class Netdisco
  class CDP < XDP
    MIB = "1.3.6.1.4.1.9.9.23" # ciscoCdpMIB

    OID      = {
      # http://tools.cisco.com/Support/SNMP/do/BrowseOID.do?local=en&translate=Translate&objectInput=1.3.6.1.4.1.9.9.23.1.2.1.1
      # cdpInterfaceName:   "1.3.6.1.2.1.31.1.1.1.18",
      cdpInterfaceName:   "1.3.6.1.4.1.9.9.23.1.1.1.1.6",
      cdpCacheAddress:    "1.3.6.1.4.1.9.9.23.1.2.1.1.4",
      cdpCacheDeviceId:   "1.3.6.1.4.1.9.9.23.1.2.1.1.6",
      cdpCacheDevicePort: "1.3.6.1.4.1.9.9.23.1.2.1.1.7",
    }
    PEERS_BY = OID[:cdpCacheDeviceId]

    private
      def make_peers
        peers = []
        @mib.by_oid(PEERS_BY).each do |_, vb|
          peer          = Peer.new
          peer_id       = vb.oid_id(PEERS_BY)
          peer.oid      = get_oid_hash(peer_id)
          peer.raw_ip   = @mib[OID[:cdpCacheAddress], peer_id].as_ip
          peer.raw_name = @mib[OID[:cdpCacheDeviceId], peer_id].value
          peer.ip       = get_ip(peer.raw_ip, peer.raw_name)
          peer.dst      = @mib[OID[:cdpCacheDevicePort], peer_id].value
          peer.src      = @mib[OID[:cdpInterfaceName], peer_id.first]
          peer.src      = peer.src&.value if peer.src
          peer.raw_ip   = @mib[OID[:cdpCacheAddress], peer_id].value
          peers << peer
        end
        peers
      end
  end
end