#!/bin/sh
# ----------------------------------------------------------------------
#
# This file is part of microdevuan, a set of scripts to create minimal 
# devuan live images
# 
# ----------------------------------------------------------------------
#
# 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 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
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# ----------------------------------------------------------------------
#
# (c) KatolaZ <katolaz@freaknet.org> (2016)
#
# ----------------------------------------------------------------------

### BEGIN INIT INFO
# Provides:          boot_beep
# Required-Start:    mountall
# Required-Stop:     
# Default-Start:     S
# Default-Stop:      
# Short-Description: Boot Beep Daemon
### END INIT INFO


. /etc/default/boot_beep

rm_hanging_instances(){
    
    if [ -f ${BB_TMPFILE} ];  then
        for i in `cat ${BB_TMPFILE}`; do
            is_alive=`ps ax | grep "^${i} " | wc -l`
            if [ $((${is_alive})) -gt 0 ]; then
                kill -9 ${i}
            fi
        done
        rm ${BB_TMPFILE}; touch ${BB_TMPFILE}
    fi

}

check_active(){

    ALIVE=0
    if [ -f ${BB_TMPFILE} ];  then
        for i in `cat ${BB_TMPFILE}`; do
            is_alive=`ps ax | grep "^${i} " | wc -l`
            if [ $((${is_alive})) -gt 0 ]; then
                ALIVE=1
            fi
        done
        if [ ${ALIVE} -ge 1 ]; then 
            return 1;
        else
            return 0;
        fi
    else
        return 0
    fi
    
    
}



start_bb(){

    check_active
    if [ $? != 0 ]; then
        echo "beep_boot is already running"
        exit 1;
    fi


    rm_hanging_instances 
    nohup ${BB_SCRIPTFILE}  2>&1 >/dev/null &
    exit 0;
}

stop_bb(){
    check_active 
    if [ $? == 0 ]; then
        echo "beep_boot is not running"
        rm ${BB_TMPFILE}
        exit 1;
    fi

    rm_hanging_instances
    exit 0;
}




case $1 in 

    start)
        start_bb
        exit 0;
        ;;
    
    stop)
        stop_bb;
        exit 0;
        ;;
    
    status)
        check_active
        if [ $? == 0 ]; then
            echo "boot_beep is not up"
        else
            echo "boot_beep is up and running"
        fi
        exit 0
        ;;

    *)
        echo "Usage: $0 {start|stop|status}"
        exit 1;
esac