#!rsc
# RouterOS script: bridge-port-to-default
# Copyright (c) 2013-2020 Christian Hesse <mail@eworm.de>
#
# reset bridge ports to default bridge

:global BridgePortTo;

:local Len ([ :len $BridgePortTo ] + 1);

:if ($Len = 1) do={
  :delay 1s;
  :set Len ([ :len $BridgePortTo ] + 1);
}

:foreach BridgePort in=[ / interface bridge port find where comment!="" ] do={
  :local BridgePortVal [ / interface bridge port get $BridgePort ];
  :foreach Comment in=[ :toarray ($BridgePortVal->"comment") ] do={
    :if ([ :pick $Comment 0 $Len ] = ($BridgePortTo . ":")) do={
      :local BridgeDefault [ :pick $Comment $Len [ :len $Comment ] ];
      :if ($BridgeDefault = "dhcp-client") do={
        :if ($BridgePortVal->"disabled" = false) do={
          :log info ("Disabling bridge port for interface " . $BridgePortVal->"interface" . ", enabling dhcp client.");
          / interface bridge port disable $BridgePort;
          / ip dhcp-client enable [ find where interface=$BridgePortVal->"interface" comment="toggle with bridge port" disabled=yes ];
        }
      } else={
        :if ($BridgePortVal->"disabled" = true) do={
          :log info ("Enabling bridge port for interface " . $BridgePortVal->"interface" . ", disabling dhcp client.");
          / ip dhcp-client disable [ find where interface=$BridgePortVal->"interface" comment="toggle with bridge port" disabled=no ];
          / interface bridge port enable $BridgePort;
        }
        :if ($BridgeDefault != $BridgePortVal->"bridge") do={
          :log info ("Changing interface " . $BridgePortVal->"interface" . " to " . $BridgePortTo . " bridge " . $BridgeDefault);
          / interface bridge port set bridge=$BridgeDefault $BridgePort;
        } else={
          :log debug ("Interface " . $BridgePortVal->"interface" . " already connected to " . $BridgePortTo . " bridge " . $BridgeDefault);
        }
      }
    }
  }
}