#!/bin/bash
#  $HeadURL$ $LastChangedRevision$
set -e
PROGNAME=$(basename $0)

#  Load support functions
. $(pcms-config PCMS_SHARE_PREFIX)/scripts/support.sh

main()
{
    #  Defaults for options
    VERBOSELEVEL=2

    #  Process options
    while [ $# -ge 1 ]; do
        case $1 in
            -d)              VERBOSELEVEL=$2; shift ;;
            --debug=*)       VERBOSELEVEL=${1#*=} ;;
            -v|--verbose)    VERBOSELEVEL=3 ;;
            --)              shift; break ;;
            -*)              error "main: $1: bad option" ;;
            *)               break ;;
        esac
        shift
    done

    #  Process arguments
    [ $# = 1 ] || usage
    eval set -- $(encode --decode "$1")
    while [ $# -ge 1 ]; do
        case $1 in
            ifname) IFNAME=$2; shift ;;
            type) TYPE=$2; shift ;;
            autoconnect) AUTOCONNECT=$2; shift ;;
            ip4) IP4=$2; shift ;;
            gw4) GW4=$2; shift ;;
            con-name) CON_NAME=$2; shift ;;
            *)   error "$1: unhandled nmcli keyword" ;;
        esac
        shift
    done

    #  Sanity checks and derivations
    for VAR in IFNAME CON_NAME TYPE; do
        eval "[ \"X\$$VAR\" != X ]" || error "$VAR: not set"
    done
    [[ $IFNAME =~ ^((eth|wlan|dummy)[0-6])$  ]] || error "$IFNAME: invalid device"

    #  Clean
    ifdown --force --all 2>/dev/null || true
    ifconfig eth0 down 2>/dev/null || true
    ifconfig eth1 down 2>/dev/null || true
    ifconfig wlan0 down 2>/dev/null || true
    nmcli con del 'Wired connection 1' 2>/dev/null || true
    nmcli con del "$CON_NAME" 2>/dev/null || true

    #  Configure but don't activate
    debug 10 "main: caling [nmcli conn add type $TYPE con-name $CON_NAME ifname $IFNAME ${AUTOCONNECT:+autoconnect $AUTOCONNECT} ${IP4:+ip4 $IP4} ${GW4:+gw4 $GW4}] ..."
    eval nmcli conn add type "$TYPE" con-name "$CON_NAME" ifname "$IFNAME" ${AUTOCONNECT:+autoconnect $AUTOCONNECT} ${IP4:+ip4 $IP4} ${GW4:+gw4 $GW4}
}

usage() { echo "Usage: $PROGNAME [ --file=<file> ] <nmcli-arguments>" >&2; exit 1; }

main "$@"