#!/bin/sh

NGINX=/usr/local/nginx/sbin/nginx

CMD="$1"

PID=`ps -ax | grep nginx | grep master | awk -F ' ' '{print $1}'`

if [ "x$PID" != "x" ] && kill -0 $PID 2>/dev/null ; then
	RUN=1
else
	RUN=0
fi

case $CMD in
start)
	if [ $RUN -eq 1 ]; then
		echo "$0 $CMD: nginx (pid $PID) already running"
		exit 1
	fi
        if $NGINX ; then
            echo "$0 $CMD: nginx started"
        else
            echo "$0 $CMD: nginx could not be started"
        fi
        ;;
stop)
	if [ $RUN -eq 0 ]; then
		echo "$0 $CMD: nginx not running"
		exit 1
	fi
	if kill $PID ; then
		echo "$0 $CMD: nginx stopped"
	else
		echo "$0 $CMD: nginx could not be stopped"
        fi
        ;;
graceful)
	if [ $RUN -eq 0 ]; then
		echo "$0 $CMD: nginx not running, trying to start"
		if $NGINX ; then
			echo "$0 $CMD: nginx started"
		else
			echo "$0 $CMD: nginx could not be started"
		fi
        else
	if $NGINX -t >/dev/null 2>&1; then
		if kill -1 $PID ; then
			echo "$0 $CMD: nginx gracefully restarted"
		else
			echo "$0 $CMD: nginx could not be restarted"
		fi
		else
			echo "$0 $CMD: configuration broken, ignoring restart"
			echo "$0 $CMD: run 'nginxctl configtest' for details"
		fi
	fi
        ;;
configtest)
	$NGINX -t
	;;
*)
	echo "usage: $0 (start|stop|graceful|configtest|help)"
        cat <<EOF

start      - start nginx
stop       - stop nginx
graceful   - do a graceful restart by sending a HUP to master process or start if not running
configtest - do a configuration syntax test
help       - this screen

EOF

esac