#!/bin/bash
# start-webui:
# Starts and controls instances of the OpenGroupware.org application server.
# Date: 06.03.2004
# Author: Sebastian Ley <ley@debian.org>
#
# Modify the following variable to match the location of the gnustep-make
# installation:
GNUSTEP_MAKE_DIR=/usr/lib/opengroupware.org/System/Makefiles

PROGNAME=$0
LOOP=0
TIMEREGISTER=([0]=-100 [1]=-100 [2]=-100 [3]=-100 [4]=-100)

usage() {
	cat <<EOF
Usage: $PROGNAME [-l LOGFILE] [-a ARGUMENTS] [-p PIDFILE] [-h]
Starts and controls the OpenGroupware.org application server.

  -l LOGFILE
        Log Output of application server to LOGFILE
	Default: ~/opengroupware.org-webui.log
  -a ARGUMENTS
        Invoke the application server with argument string ARGUMENTS
	Default: "-WOPort 20000 -WOHttpAllowHost localhost"
  -p PIDFILE
  	Store process ID of this script. Useful for usage in initscripts.
	Default: ~/opengroupware.org-webui.pid
  -h
        Prints this help text
EOF
}

start_time() {
	TIMEREGISTER[$LOOP]=$SECONDS
	return 0
}

respawn_too_fast() {
	DIFF=$((${TIMEREGISTER[$LOOP]}-${TIMEREGISTER[$((($LOOP+1)%5))]}))
	LOOP=$((($LOOP+1)%5))
	if [ "$DIFF" -lt "20" ]; then
		return 0
	fi
	return 1
}


while getopts "p:l:a:h" OPT; do
	case $OPT in
		l)	if [ -z "$OPTARG" ]; then usage; exit 1; fi
			LOGFILE="$OPTARG"
			;;
		a)	if [ -z "$OPTARG" ]; then usage; exit 1; fi
			ARGS="$OPTARG"
			;;
		p)	if [ -z "$OPTARG" ]; then usage; exit 1; fi
			PIDFILE="$OPTARG"
			;;
		h)	usage
			exit 0
			;;
		\?)	usage
			exit 0
			;;
	esac
done

if [ -z "$LOGFILE" ]; then
	LOGFILE=~/opengroupware.org-webui.log
fi
if [ -z "$ARGS" ]; then
	ARGS="-WOPort 20000 -WOHttpAllowHost localhost"
fi
if [ -z "$PIDFILE" ]; then
	PIDFILE=~/opengroupware.org-webui.pid
fi

echo $$ > $PIDFILE

export LOGNAME=`whoami`
. $GNUSTEP_MAKE_DIR/GNUstep.sh
cd $GNUSTEP_SYSTEM_ROOT/WOApps/OpenGroupware.woa

TERMINATE=
while [ ! $TERMINATE ]; do
	./OpenGroupware $ARGS > /dev/null 2>> "$LOGFILE" &
	trap "TERMINATE=1; kill $!" 1 2 15
	start_time
	wait $!
	STATUS=$?
	if [ "$STATUS" != "0" ]; then
		echo "[Control script] OpenGroupware.org application server has exitet abnormally with status $STATUS." >> "$LOGFILE"
	else
		echo "[Control script] OpenGroupware.org application server has exitet normally."  >> "$LOGFILE"
	fi
	if respawn_too_fast; then
		echo "[Control script] OpenGroupware.org application server respawning too fast. Exiting..." >> "$LOGFILE"
		TERMINATE=1
	fi
done

echo "" > $PIDFILE

exit 0