photobooth

#!/bin/bash 
# /etc/init.d/photobooth

### BEGIN INIT INFO
# Provides:          photobooth
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description:  Starts the raspberry pi photobooth
# Description:       Starts the raspberrypi photobooth
### END INIT INFO

# Loading path for CMDS
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
#Loading profile to have, for example, JAVA_HOME set
. /etc/profile

#The service name
NAME=photobooth
#THE COMMAND TO LAUNCH
DAEMON=/opt/photobooth/startphotobooth
#File where log will be placed (/dev/null if empty)
LOGFILE=/var/log/$NAME
#File where pid will be store, leave as is if you don't know what you do
PIDFILE=/var/run/$NAME.pid
#User who will be owner of the process, root if empty
USER=

processRunning() {
		kill -0 $1 &> /dev/null
		if [ "$?" == "0" ]
		then
			echo 0 
		else
			if [ -f $PIDFILE ]
			then 
				rm $PIDFILE
			fi
			echo 1
		fi
}

daemonRunning() {
	if [ -f $PIDFILE ]
	then
		echo $(processRunning $(cat $PIDFILE))
	else
		echo 1 
	fi
}

waitForCompletion() {

	echo "Service $NAME is being stopped"
	while [ $(daemonRunning) == 0 ]
	do
		sleep 1
	done
}

start() {
	CMD="nohup "
	if [ $(daemonRunning) == 1 ]
	then
		if [ -x $DAEMON ]
		then
			CMD="$CMD $DAEMON"
			if [ "$LOGFILE" != ""  ]
			then
				if [ ! -f $LOGFILE ]
				then
					touch $LOGFILE
					if [ "$USER" != "" ]
					then
						chown $USER:$(id -gn $USER) $LOGFILE
					fi
				fi
				CMD="$CMD 1>> $LOGFILE 2>>$LOGFILE"
			else
				CMD="$CMD &> /dev/null"
			fi
			CMD="$CMD &"
			CMD="$CMD echo \$!"
			if [ "$USER" != "" ]
			then
				CURRPID=$(su $USER -c "$CMD")
			else
				CURRPID=$(su -c "$CMD")
			fi
			echo $CURRPID > $PIDFILE
			echo -e "Service $NAME \e[0;32mSTARTED\e[0m"
		else
			echo "The daemon file $DAEMON is not executable"
		fi
	else
		echo -e "Service $NAME already running, pid: \e[1;34m$(cat $PIDFILE)\e[0m"
	fi

}
# Restart the service FOO
stop() {
	CURRPID=$(cat $PIDFILE)
	if [ $(daemonRunning) == 0 ]
	then 
			
			kill $CURRPID
			waitForCompletion
			echo -e "Service $NAME : \e[0;31mSTOPPED\e[0m"
	else
		echo "Service $NAME is not currently running."
	fi
}

forcestop() {
	CURRPID=$(cat $PIDFILE)
	if [ $(daemonRunning) == 0 ]
	then 
			
			kill -9 $CURRPID
			waitForCompletion
			echo -e "Service $NAME : \e[0;31mSTOPPED\e[0m"
	else
		echo "Service $NAME is not currently running."
	fi
}

### main logic ###
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  status)
        if [ $(daemonRunning) == "0" ]
		then 
			echo "Service $NAME running under pid $(cat $PIDFILE)"
		else
			echo "Service is stopped"
		fi
        ;;
  reload)
        stop
        start
        ;;
  force-reload)
        forcestop
        start
        ;;
  force-stop)
        forcestop
        ;;
  *)
        echo $"Usage: $0 {start|stop|reload|force-reload|force-stop|status}"
        exit 1
esac
exit 0