#!/bin/sh
### BEGIN INIT INFO
# Provides:          pfclient
# Required-Start:    $local_fs $remote_fs $network $time $syslog
# Required-Stop:     $local_fs $remote_fs $network $time $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: planefinder.net ads-b decoder
# Description:       pfclient decodes ADS-B data and shares to planefinder.net
### END INIT INFO

. /lib/lsb/init-functions

DAEMON=/usr/bin/pfclient

PIDFILE=/var/run/pfclient.pid
LOGFILE=/var/log/pfclient
CONFIGFILE=/etc/pfclient-config.json

get_pid()
{
    cat "$PIDFILE"
}

is_running()
{
    [ -f "$PIDFILE" ] && ps `get_pid` > /dev/null 2>&1
}

start()
{
  log_daemon_msg "Starting pfclient" "pfclient"
  log_daemon_msg ""

  start-stop-daemon --start --exec $DAEMON -- -d -i $PIDFILE -z $CONFIGFILE -y $LOGFILE $ 2>/var/log/pfclient/error.log

  status=$?
  log_end_msg $status
}

stop() {
 log_daemon_msg "Stopping pfclient" "pfclient"
 log_daemon_msg ""

 PFPID=`cat ${PIDFILE} 2>/dev/null`

    if [ "${PFPID}" != "" ] && [ -e "/proc/${PFPID}" ]; then
      kill $PFPID #2>/dev/null
      ATTEMPT=0
      while [ -e "/proc/${PFPID}" ] && [ "${ATTEMPT}" -le 80 ]; do
        sleep 0.25
        ATTEMPT=$((ATTEMPT+1))
      done

      if [ -e "/proc/${PFPID}" ]; then
        echo "Killing all children processes"
        pkill -9 -P ${PFPID}
        kill -9 ${PFPID}
      fi
    fi

    log_end_msg $?
    return
}

status()
{
  if is_running; then
        echo "Running"
    else
        echo "Stopped"
        exit 1
    fi

  return;
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    status)
  status
        ;;
    restart)
        stop && sleep 2 && start
        ;;
    reload)
  exit 3
  ;;
    status)
  status_of_proc $DAEMON "pfclient"
  ;;
    *)
  echo "Usage: $0 {start|stop|restart|status}"
  exit 2
  ;;
esac