#!/bin/sh

export PATH=/sbin:/bin:/usr/sbin:/usr/bin:/mod/sbin:/mod/bin:/mod/usr/sbin:/mod/usr/bin
export LD_LIBRARY_PATH=/mod/lib:/mod/usr/lib

case "$1" in
	""|load|start|backup|restart|config)
		if [ ! -r "/mod/etc/conf/rrdstats.cfg" ]; then
			echo "Error[rrdstats]: not configured" 1>&2
			exit 1
		fi
		. /mod/etc/conf/rrdstats.cfg
		;;
esac

config() {
	# kein "-p" wg externer Pfade!
	mkdir $RRDSTATS_RRDDATA 2>/dev/null
	mkdir $RRDSTATS_RRDTEMP 2>/dev/null
	rm /var/mod/etc/statpix 2>/dev/null
	ln -s $(echo "$RRDSTATS_RRDTEMP" | sed 's/\/*$//g') /var/mod/etc/statpix 2>/dev/null
}

start() {
	echo -n 'Starting rrdstats...'

	if [ ! -z "$(pidof rrdstats)" ]; then
		echo "already running"
		exit 0
	fi

	[ "$RRDSTATS_SAVEBACKUP" = yes ] && backup

	start-stop-daemon -n rrdstats -a /etc/default.rrdstats/rrdstats $RRDSTATS_INTERVAL -b -q -S
	exitval=$?

	if [ "$exitval" -eq 0 ]; then
		echo 'done.'
	else
		echo 'failed.'
		exit $exitval
	fi
}

stop() {
	echo -n 'Stopping rrdstats...'
	killall rrdstats 2>/dev/null
	exitval=$?

	if [ $exitval -eq 0 ]; then
		echo 'done.'
	else
		echo 'failed.'
	fi
}

backup() {
	_CURRENT=$RRDSTATS_RRDDATA/backup/`echo $(date -Iseconds|sed 's/\:/-/g;s/\+.*//g;s/T/_/g')`
	if [ `ls $RRDSTATS_RRDDATA/*.rrd 2>/dev/null |wc -w` -le 0 ]; then
		echo -n "backup skipped, no files found..."
		return
	fi
	mkdir $RRDSTATS_RRDDATA/backup 2>/dev/null
	mkdir $_CURRENT 2>/dev/null
	cp -p $RRDSTATS_RRDDATA/*.rrd $_CURRENT/ 2>/dev/null
	exitval=$?
	if [ $exitval -ne 0 ]; then
		echo 'backup failed, abort.'
		exit $exitval
	fi
}

case "$1" in
	config)
		config
		;;
	""|load)
		modreg cgi rrdstats RRDstats
		modreg status rrdstats RRDstats rrdstats/stats
		config
		if [ "$RRDSTATS_ENABLED" != yes ]; then
			echo "rrdstats is disabled" 1>&2
			exit 1
		fi
		start
		;;
	unload)
		stop
		modunreg status rrdstats rrdstats/stats
		modunreg cgi rrdstats
		;;
	start)
		config
		start
		;;
	stop)
		stop
		;;
	backup)
		config
		backup
		;;
	restart)
		stop
		sleep 1
		config
		start
		;;
	status)
		if [ -z "$(pidof rrdstats)" ]; then
			echo 'stopped'
		else
			echo 'running'
		fi
		;;
	*)
		echo "Usage: $0 [load|unload|start|stop|restart|status|config]" 1>&2
		exit 1
		;;
esac