#!/bin/sh

set -e

PKG="webalizer-cn"

prepare_mv_conffile() {
  local conffile="$1"

  [ -e "$conffile" ] || return 0

  local md5sum="$(md5sum $conffile | sed -e 's/ .*//')"
  local old_md5sum="$(dpkg-query -W -f='${Conffiles}' $PKG | \
      sed -n -e "\' $conffile ' { s/ obsolete$//; s/.* //; p }")"

  if [ "$md5sum" = "$old_md5sum" ]; then
    mv -f "$conffile" "$conffile.dpkg-remove"
  fi
}

case "$1" in
  install|upgrade)
    prepare_mv_conffile /etc/apache2/conf.d/$PKG.conf
  ;;

  abort-upgrade)
  ;;

  *)
    echo "preinst called with unknown argument \`$1'" >&2
    exit 1
  ;;
esac

#DEBHELPER#

exit 0