#!/bin/sh -e

case "$1" in

  configure)

    # make sure the nut user exists and has correct memberships
    if ! getent group nut >/dev/null; then
      addgroup --quiet --system nut
    fi
    if ! getent passwd nut >/dev/null; then
      adduser --quiet --system --ingroup nut --home /var/lib/nut --no-create-home nut
    elif ! groups nut | grep -qw nut; then
      adduser nut nut
    fi
# for Ubuntu, while waiting for a proper debconf
#    if ! groups nut | grep -qw dialout; then
#	adduser nut dialout
#    fi

    # make sure that conffiles are secured and have the correct ownerships
    if [ -d /etc/nut/ ] ; then
      chown root:nut /etc/nut/
    fi
    for file in ups.conf upsd.conf upsd.users ; do
        if [ -f /etc/nut/$file ] ; then
            chown root:nut /etc/nut/$file
            chmod 640 /etc/nut/$file
        fi
    done

    # make sure that /var/run/nut exists and has the correct ownerships
    if [ ! -d /var/run/nut ] ; then
        mkdir -p /var/run/nut
    fi
    if [ -d /var/run/nut ] ; then
        chown root:nut /var/run/nut
        chmod 770 /var/run/nut
    fi

    # make sure that /var/lib/nut has the correct permissions and ownerships
    if [ -d /var/lib/nut ] ; then
        chown root:nut /var/lib/nut
        chmod 770 /var/lib/nut
    fi

    # ask udev to check for new udev rules
    [ -x /etc/init.d/udev ] && pidof udevd > /dev/null \
      && udevadm trigger --subsystem-match=usb --action=change

    # 557178  udevadm trigger --subsystem-match=usb

    # migrate /etc/default/nut to /etc/nut/nut.conf (part #2)
    if dpkg --compare-versions "$2" lt-nl "2.4.1-2" ; then
      # source the temporary /etc/default/nut.bak file
      if [ -f /etc/default/nut.bak ] ; then
        . /etc/default/nut.bak

        # FIXME: use a template (and debconf to output?)
        echo "migrating /etc/default/nut to /etc/nut/nut.conf"

        # pre process the config
        case "$START_UPSD" in
          y|Y|yes|YES|Yes)
            START_UPSD=yes
            ;;
          *)
            START_UPSD=no
            ;;
        esac
        case "$START_UPSMON" in
          y|Y|yes|YES|Yes)
            START_UPSMON=yes
            ;;
          *)
            START_UPSMON=no
            ;;
        esac

        # now process the result
        if [ "x$START_UPSD" = "xyes" ] ; then
          if [ "x$START_UPSMON" = "xyes" ] ; then
            # can also be netserver
            NUT_MODE=standalone
          #else not processed since it should be an error!
          fi
        else
          if [ "x$START_UPSMON" = "xyes" ] ; then
            NUT_MODE=netclient
          else
            NUT_MODE=none
          fi
        fi

        # output back the MODE to nut.conf
        sed "s/^MODE\(.*\)/MODE=$NUT_MODE/" /etc/nut/nut.conf  > /etc/nut/nut.conf.new

        # append the content of default, removing START_* / start...
        grep -iv 'START' /etc/default/nut.bak >> /etc/nut/nut.conf.new
        # move back to nut.conf
        mv /etc/nut/nut.conf.new /etc/nut/nut.conf
        # and to init.d/nut
        #if [ -f /etc/init.d/nut ] ; then
        #  sed "s/^UPSD_OPTIONS\(.*\)/UPSD_OPTIONS=\"$UPSD_OPTIONS\"/" /etc/init.d/nut  > /etc/init.d/nut.new
        #  sed "s/^UPSMON_OPTIONS\(.*\)/UPSMON_OPTIONS=\"$UPSMON_OPTIONS\"/" /etc/init.d/nut.new  > /etc/init.d/nut
        #fi
        rm -f /etc/default/nut.bak /etc/default/nut
      fi
    else
      # re process nut.conf MODE so that it can be sourced
      NUT_MODE=`grep -e '^ *MODE' /etc/nut/nut.conf | tr -d " "`
      sed "s/^ *MODE.*/$NUT_MODE/" /etc/nut/nut.conf > /etc/nut/nut.conf.new
      mv /etc/nut/nut.conf.new /etc/nut/nut.conf
    fi
    ;;

  abort-upgrade)
    # do nothing
    ;;

  abort-remove)
    # do nothing
    ;;

  abort-deconfigure)
    # do nothing
    ;;

  *)
    echo "$0: incorrect arguments: $*" >&2
    exit 1
    ;;

esac

#DEBHELPER#