#!/bin/bash

function spawn () {
	nohup php server.php > daemon.out 2>&1 &
	PID=$!
	echo $PID > daemon.pid
}

if [ -z $1 ]
then
	if [ ! -e daemon.pid ]
	then
		nohup bash $0 start > /dev/null 2>&1 &
		echo "Sock Chat Daemon started."
	else
		echo "ERROR: Sock Chat Daemon is already running!"
		echo "To stop the daemon, use daemon stop"
	fi
elif [ $1 = "start" ]
then
	if [ ! -e daemon.pid ]
	then
		spawn

		while [ -e daemon.pid ]
		do
			if ! ps -p $PID > /dev/null
			then
				echo "Server died unexpectedly! Restarting..."
				spawn
			fi
			sleep 5
		done
		
		/bin/kill -s SIGKILL $PID
	fi
elif [ $1 = "stop" ]
then
	rm daemon.pid
	echo "Sock Chat Daemon stopped."
else
	echo "SOCK CHAT SERVER DAEMON"
	echo
	echo "USAGE: daemon [stop]"
fi