#!/bin/bash
#-----------------------------------------------------------------------------------------------------------------------------------
#
# Rx3 Vpn Adm
#
# Copyright (C) 2025-2026 Arnaud G. GIBERT
# mailto:arnaud@rx3.net
#
# This is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; If not, see
# <https://www.gnu.org/licenses/>.
#
#-----------------------------------------------------------------------------------------------------------------------------------



#-----------------------------------------------------------------------------------------------------------------------------------
# Includes
#-----------------------------------------------------------------------------------------------------------------------------------

: "${RX3_LIB_DIR:=/usr/lib/rx3}"
. "${RX3_LIB_DIR}/vpn.bash"





#-----------------------------------------------------------------------------------------------------------------------------------
# Global Variables
#-----------------------------------------------------------------------------------------------------------------------------------

declare -g VERSION="1.2.0"
declare -g    NAME="rx3_vpn_adm"
declare -g    HELP="usage: [-h | --help] | [-V | --version] | [-v | --verbose] {start | stop | restart | status | dump} [args...]"

declare -g    MODE="DEFAULT"
declare -g VERBOSE="FALSE"
declare -g DRY_RUN="FALSE"
declare -g  RETVAL=0
declare -g    prog="rx3-vpn"

declare -g   DEBUG=""
#declare -g   DEBUG="echo"
#declare -g   DEBUG=":"

declare -g     LOG=""
#declare -g     LOG=":"
#declare -g     LOG="echo"





#-----------------------------------------------------------------------------------------------------------------------------------
# Version Print
#-----------------------------------------------------------------------------------------------------------------------------------

rva_version_print()
{
    version_print
}





#-----------------------------------------------------------------------------------------------------------------------------------
# Help Print
#-----------------------------------------------------------------------------------------------------------------------------------

rva_help_print()
{
    rva_version_print
    help_print
}





#-----------------------------------------------------------------------------------------------------------------------------------
# Arg Parse
#-----------------------------------------------------------------------------------------------------------------------------------

rva_args_parse()
{
    tmp_args=$(getopt -o hvV --long help,verbose,version -n "${NAME}" -- "$@")

    if [ $? != 0 ]; then echo "Terminating..." >&2; exit 1; fi

    eval set -- "${tmp_args}"

    while true
    do
        case "$1" in
            # Options
            -h|--help)        MODE="EXIT"; rva_help_print;    shift;;
            -V|--version)     MODE="EXIT"; rva_version_print; shift;;
            -v|--verbose)  VERBOSE="TRUE";                    shift;;

            # End of options
            --)                                               shift;  break;;
            *) echo "args_parse internal error [$1]!";                exit 1;;
        esac
    done

    if [[ "${MODE}" != "EXIT" ]]
    then
        if [[ "${#}" -lt "1" ]]
        then
            MODE="EXIT"

            echo_error "Not enough args!"
            rva_help_print
        else
            case "$1" in
                start|stop|restart|status|dump)
                    MODE="$(echo "$1" | tr '[:lower:]' '[:upper:]')"
                ;;
                
                *)
                    MODE="EXIT"

                    echo_error "Invalid command: [$1]"
                    rva_help_print
                ;;
            esac
        fi
    fi
}





#-----------------------------------------------------------------------------------------------------------------------------------
# Start
#-----------------------------------------------------------------------------------------------------------------------------------

rva_start()
{
    echo "Starting..."

    if [ -r /var/lock/subsys/rx3-vpn ]
    then
        echo "already started"
        RETVAL=0
    else
        vpn_start

        RETVAL=$?
        [ "${RETVAL}" = 0 ] && touch /var/lock/subsys/rx3-vpn
    fi

    echo
}





#-----------------------------------------------------------------------------------------------------------------------------------
# Stop
#-----------------------------------------------------------------------------------------------------------------------------------

rva_stop()
{
    echo "Stopping..."

    if [ -r /var/lock/subsys/rx3-vpn ]
    then
        vpn_stop

        RETVAL=$?
    else
        echo "already stopped"
        RETVAL=0
    fi

    [ "${RETVAL}" = 0 ] && rm -f /var/lock/subsys/rx3-vpn

    echo
}





#-----------------------------------------------------------------------------------------------------------------------------------
# Status
#-----------------------------------------------------------------------------------------------------------------------------------

rva_status()
{
    vpn_status
}





#-----------------------------------------------------------------------------------------------------------------------------------
# Dump
#-----------------------------------------------------------------------------------------------------------------------------------

rva_dump()
{
    vpn_job_tab_dump
}





#-----------------------------------------------------------------------------------------------------------------------------------
# Main
#-----------------------------------------------------------------------------------------------------------------------------------

rva_args_parse "$@"



if [[ "${MODE}" == "EXIT" ]]
then
    exit 0
fi

vpn_init

case "${MODE}" in
    START)
        rva_start
    ;;

    STOP)
        rva_stop
    ;;

    RESTART)
        rva_stop
        sleep 1
        rva_start
    ;;

    STATUS)
        rva_status
    ;;

    DUMP)
        rva_dump
    ;;

    *)
        echo "Usage: $0 {start|stop|restart|status|dump}"
        RETVAL=1
    ;;
esac

vpn_deinit

exit ${RETVAL}