#!/bin/sh
set -e
set -u

case "$1" in
configure)
  oldianadir=/var/lib/snmp/mibs/iana
  oldietfdir=/var/lib/snmp/mibs/ietf
  ianadir=/var/lib/mibs/iana
  ietfdir=/var/lib/mibs/ietf

  if [ -d $oldianadir ]; then
    mkdir -p $ianadir

    for mib in $(download-mibs --list iana) $(download-mibs --list ianarfc); do
      test -f $oldianadir/$mib || continue
      mv $oldianadir/$mib $ianadir/
    done

    if [ -h $oldianadir ]; then
      rm $oldianadir
    else
      rmdir --ignore-fail-on-non-empty $oldianadir
    fi
  fi

  if [ -d $oldietfdir ]; then
    mkdir -p $ietfdir

    for mib in $(download-mibs --list rfc); do
      test -f $oldietfdir/$mib || continue
      mv $oldietfdir/$mib $ietfdir
    done

    if [ -h $oldietfdir ]; then
      rm $oldietfdir
    else
      rmdir --ignore-fail-on-non-empty $oldietfdir
    fi
  fi

  if [ ! -d $ianadir -o ! -d $ietfdir ]; then
    if ! download-mibs; then
      echo "Downloading the MIBs failed."
      echo ""
      echo "Please check your Internet connection and run download-mibs again."
      echo ""
      exit 1
    fi
  fi
  ;;
esac