#!/bin/sh

### BEGIN INIT INFO
# Provides: etherpad-lite
# 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 etherpad lite
# Description: starts etherpad lite using start-stop-daemon
### END INIT INFO

PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/opt/node/bin"
LOGFILE="/var/log/etherpad.log"
EPLITE_DIR="/opt/etherpad"
EPLITE_BIN="bin/run.sh"
USER="etherpad"
GROUP="etherpad"
DESC="Etherpad"
NAME="etherpad"

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 $DESC... "
 while test -d /proc/$(cat /var/run/$NAME.pid); do
 killtree $(cat /var/run/$NAME.pid) 15
 sleep 0.5
 done
 rm /var/run/$NAME.pid
 echo "done"
}

status() {
 status_of_proc -p /var/run/$NAME.pid "" "etherpad" && 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