#!/bin/sh

### BEGIN INIT INFO
# Provides:          ethercalc
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts ethercalc
# Description:       starts ethercalc using start-stop-daemon
### END INIT INFO
app="ethercalc"
PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/opt/node/bin"
LOGFILE="/var/log/$app/$app.log"
EPLITE_DIR="/usr/local/bin"
EPLITE_BIN="ethercalc"
USER="www-data"
GROUP="www-data"
DESC="EtherCalc"
NAME="$app"

set -e

. /lib/lsb/init-functions

start() {
  echo "Starting $DESC... "
  
	start-stop-daemon --start --chuid "$USER:$GROUP" --background --make-pidfile --pidfile /var/run/$NAME.pid --exec $EPLITE_DIR/$EPLITE_BIN -- $LOGFILE || true
  echo "done"
}

#We need this function to ensure the whole process tree will be killed
killtree() {
    local _pid=$1
    local _sig=${2-TERM}
    for _child in $(ps -o pid --no-headers --ppid ${_pid}); do
        killtree ${_child} ${_sig}
    done
    kill -${_sig} ${_pid}
}

stop() {
  echo "Stopping $DESC... "
  if test -f /var/run/$NAME.pid; then
    while test -d /proc/$(cat /var/run/$NAME.pid); do
      killtree $(cat /var/run/$NAME.pid) 15
      sleep 0.5
    done
    rm /var/run/$NAME.pid
  fi
  echo "done"
}

status() {
  status_of_proc -p /var/run/$NAME.pid "" "$app" && exit 0 || exit $?
}

case "$1" in
  start)
	  start
	  ;;
  stop)
    stop
	  ;;
  restart)
	  stop
	  start
	  ;;
  status)
	  status
	  ;;
  *)
	  echo "Usage: $NAME {start|stop|restart|status}" >&2
	  exit 1
	  ;;
esac

exit 0