#!/bin/sh
# /etc/init.d/indiserver
#
# INDI server startup script
# Radek Kaczorek - rkaczorek@gmail.com
#
### BEGIN INIT INFO
# Provides:          indiserver
# Required-Start:    $local_fs 
# Required-Stop:     $local_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: indiserver
### END INIT INFO

# DO NOT EDIT THIS FILE
# set your drivers in /etc/indi.conf

SCRIPT="$0"
if [ -e '/etc/indi.conf' ]; then
  . /etc/indi.conf
else
  RUNAS="root"
  IP=$(hostname -I|sed -e 's/^ *//' -e 's/ *$//')
  PORT="7624"
  DRIVERS="indi_simulator_dome indi_simulator_telescope indi_simulator_ccd indi_simulator_focus"
  BIN=`which indiserver`
  LOGDIR="/var/log/indi"
  FIFO="/var/run/indi"
  LOCKFILE="/var/lock/indi"
  MAXFILE=100
fi

# check if binary exists
if [ ! $BIN ]; then
  echo "indiserver binary does not exist"
  exit 1;
fi

# set lock file
if [ ! -e $LOCKFILE ]; then
  touch $LOCKFILE
fi

# set log dir
if [ ! -e $LOGDIR ]; then
  mkdir $LOGDIR
  chown $RUNAS.root $LOGDIR
fi

# set fifo file
if [ ! -e $FIFO ]; then
  mkfifo $FIFO
  chown $RUNAS.root $FIFO
fi


# Carry out specific functions when asked to by the system
case "$1" in
  start)
    lock=`cat $LOCKFILE`
    if [ ! $lock ] || [ $lock = 0 ]; then
      echo "Starting INDI server"
      su - $RUNAS -c "$BIN -m $MAXFILE -l $LOGDIR -f $FIFO -p $PORT $DRIVERS > /dev/null 2>&1 &"
      pid=$(pidof indiserver)
      echo $pid > $LOCKFILE
    else
      echo "INDI server already running"
    fi
    ;;
  stop)
    lock=`cat $LOCKFILE`
    if [ $lock ] && [ $lock != 0 ]; then
      echo "Stopping INDI server"
      kill -TERM $lock &>/dev/null
      echo 0 > $LOCKFILE
      rm -rf $FIFO
    else
      echo "No INDI server running"
    fi
    ;;
  restart)
    $SCRIPT stop && $SCRIPT start
    ;;
  status)
    lock=`cat $LOCKFILE`
    if [ $lock ] && [ $lock != 0 ] && [ `netstat -tlp|grep $lock|wc -l` = 1 ]; then
      echo "INDI server is running on $IP:$PORT"
    else
      echo "INDI server is NOT running"
    fi
    ;;
  *)
    echo "Usage: /etc/init.d/indiserver {start|stop|status}"
    exit 1
    ;;
esac

exit 0