#!/bin/bash

# CIPRES_ROOT must be in the environment when this script is run.  
# This script shouldn't use any absolute paths so that it can be run
# by end users regardless of where they've installed cipres and other tools.

CIPRES_USER=`whoami`
CIPRES_HOME=~$CIPRES_USER
CIPRES_BIN=${CIPRES_ROOT}/bin
HOST=`hostname`

if [ "`uname | grep Darwin`" = "Darwin" ]; then
	PS="ps -U$CIPRES_USER -j -ww"
else
	PS="ps -U$CIPRES_USER -f"
fi

# Get processes IDs of interest
fn_ps()
{
	REGFIXED=`$PS | grep RegistryApp | grep "fixedPort" | grep -v grep |  awk '{print $2}'`
	PROPSVC=`$PS | grep PropertiesApp | grep -v grep |  awk '{print $2}'`
	REGOTHER=`$PS | grep RegistryApp |  grep -v "fixedPort" | grep -v grep |  awk '{print $2}'`
	len $REGFIXED ; REGFIXED_COUNT=$?
	len $PROPSVC ; PROPSVC_COUNT=$?
	len $REGOTHER ; REGOTHER_COUNT=$?
}

len()
{
	retval=0
	for i in $* 
	do
		retval=`expr $retval + 1`
	done
	return $retval 
}

killall()
{
	for pid in $*
	do
		echo killing $pid on $HOST
		kill $pid
	done
}



id $CIPRES_USER > /dev/null 2>&1
if [ $? = 1 ]
then
	echo "no cipres user: $CIPRES_USER" on $HOST
	exit 1
fi

if [ "$CIPRES_ROOT" == "" ] ; then
	echo "CIPRES_ROOT environment variable must be set to the top of a cipres installation"
	exit 1
fi

if [ $# -gt 1 ] ; then 
	CONFIGFILE="$2"
	if [ ! -f $CONFIGFILE ]; then
		echo "$CONFIGFILE must be an existingfile"
		exit 1
	fi
else
	CONFIGFILE=""
fi


case "$1" in
	'start')
		fn_ps
		if [ $PROPSVC_COUNT -eq 0 ]; then
			echo "Starting CIPRES property service on $HOST"
			python "$CIPRES_ROOT/bin/cipres_daemon" propsvc
			sleep 5
		fi
		if [ $REGFIXED_COUNT -gt 0 ]; then 
			echo "already running. pid is $REGFIXED" on $HOST
		else
			echo "Starting CIPRES Registry on $HOST"
			python "$CIPRES_ROOT/bin/cipres_daemon" registry
		fi
		;;
	'stop')
		fn_ps
		killall $REGFIXED $REGOTHER $PROPSVC
		;;
	'restart')
		echo "Restarting CIPRES Registry and property service" on $HOST
		$0 stop
		sleep 5
		$0 start
		echo "done on $HOST"
		;;
	'status')
		fn_ps
		if [ $REGFIXED_COUNT -gt 0 ] ; then
				echo "Cipres Registry is Running on $HOST.  pids: $REGFIXED"
		else
				echo "Main cipres registry is NOT Running on $HOST"
		fi
		if [ $REGOTHER_COUNT -gt 0 ] ; then
				echo "There are extra Cipres Registries Running on $HOST.  pids: $REGOTHER"
		else
				echo "There are NO extra Cipres Registries Running" on $HOST.  
		fi
		if [ $PROPSVC_COUNT -gt 0 ] ; then
				echo "Cipres PropertiesApp is running  on $HOST.  pids: $PROPSVC"
		else
				echo "Cipres PropertiesApp is NOT running on $HOST"
		fi
		;;
		*)
			echo "Usage: $0 {start|stop|restart|status} [name_of_script_to_source]"
			exit 0
esac