#----------------------------------------------------------------------------
# /var/install/include/check-eisfair-version - check installed version
#
# Creation   :  2007-12-18 hbfl
# Last Update:  $Id$
#
# Copyright (c) 2007-@@YEAR@@ the eisfair team, team(at)eisfair(dot)org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

# ---------------------------------------------------------------------------
# check first if eislib is included
# ---------------------------------------------------------------------------
. /var/install/include/eislib

# ---------------------------------------------------------------------------
# select system version
# ---------------------------------------------------------------------------

    # list systems to select
    systems="eisfair-1
             eisxen-1
             eisfair-64
             eisfair-armhf"

    etc_system_file=/etc/eisfair-system

check_system()
{
    clrhome

    # display systems to select on tty
    mecho --info "Can't detect the system type,"
    mecho --info "please select one first."

    echo
    echo
    echo "${systems}" |
    /usr/bin/gawk '{ printf ("%6s.  %s\n", FNR, $1) }'
    echo
    echo
    /var/install/bin/ask "Select" "${system_to_work}" "1-$(echo "${systems}" |
                          /usr/bin/wc -l)" "^$=Return" "0=Exit" >/tmp/ask.$$
    rc=${?}

    read system_to_work </tmp/ask.$$
    rm -f /tmp/ask.$$

    if [ $rc = 255 ]
    then
        system_to_work=0
    fi

    case ${system_to_work} in
    '') exit 0    ;;
    0)  exit 127  ;;
    *)
        # set working system
        system_work="$(echo "${systems}" |
                       /usr/bin/gawk 'FNR == '${system_to_work}' { print $1 }')"
        # write ${etc_system_file}
        echo "${system_work}" >${etc_system_file}
        EISFAIR_SYSTEM=${system_work}

        # export EISFAIR_SYSTEM to check it once
        export EISFAIR_SYSTEM
        ;;
    esac
}

# check ${etc_system_file} exists
if [ ! -f ${etc_system_file} ]
then
    # if not exists
    check_system
else
    # if exists, read entry
    system_work="$(/usr/bin/gawk '{ print $1 }' ${etc_system_file})"

    # check if ${etc_system_file} entry broken
    if $(echo "${systems}" | /usr/bin/grep -q "${system_work}$")
    then
        # if not broken
        EISFAIR_SYSTEM="${system_work}"

        # export EISFAIR_SYSTEM to check it once
        export EISFAIR_SYSTEM
    else
        # if broken
        check_system
    fi
fi
# ---------------------------------------------------------------------------
# end
# ---------------------------------------------------------------------------