ebotv3

#!/bin/bash
### BEGIN INIT INFO
# Provides:          ebotv3
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     
# Default-Stop:      
# X-Interactive:     true
# Short-Description: start/stop eBot-CSGO
### END INIT INFO

# name of daemon (eBot) will be used to name the screen session
DAEMON="ebotv3"
# path to daemon (eBot) installation
DAEMON_PATH="/home/ebot/ebot-csgo"
# path to eBot WEB installation (used for clear-cache)
DAEMON_WEB_PATH="/home/ebot/ebot-web"

# display name of daemon
NAME="eBot-V3"
PIDFILE=/var/run/${DAEMON}.pid
RETVAL=0

# prints message with red text
function err_print {
	echo -e "\e[31m$1\e[0m"
}

# prints message with green text
function ok_print {
	echo -e "\e[32m$1\e[0m"
}

# gets the PID of the DAEMON running in screen (if any)
function get_pid {
	echo $(ps axf |grep $DAEMON |grep ' SCREEN ' |awk '{print $1}' |sed 's/\W//g')
}

case "$1" in
	start)
		echo -n "Starting $NAME: "

		# see if we have correct path to eBot-CSGO installation
		if [ ! -d $DAEMON_PATH ]; then
			err_print "DAEMON_PATH variable is set to '$DAEMON_PATH', the directory does not exist therefore I am unable to start $DAEMON. Update script with correct path."
			exit -1
		fi
		cd $DAEMON_PATH
		screen -dmS $DAEMON php bootstrap.php
		RETVAL=$?
		PID=$(get_pid)
		if [ -z $PID ]; then
			err_print "Failed to start $DAEMON (RC: $RETVAL)."
		else
			ok_print "$DAEMON started (PID: $PID)."
			echo $PID > $PIDFILE
		fi
	;;
	stop)
		echo -n "Stopping $NAME: "
		PID=$(get_pid)
		if [ ! -z $PID ]; then
			kill $PID
			RETVAL=$?
			if [ $RETVAL -eq 0 ]; then
				ok_print "stopped $DAEMON."
			else
				err_print "unable to stop $DAEMON return code: $RETVAL."
			fi
		else
			err_print "$DAEMON already stopped."
		fi

		rm -rf $PIDFILE
	;;
	clear-cache)
		echo "Clearing webcache..."

		# see if we have correct path to eBot-WEB installation
		if [ ! -d $DAEMON_WEB_PATH ]; then
			err_print "DAEMON_WEB_PATH variable is set to '$DAEMON_WEB_PATH', the directory does not exist therefore I am unable to clear web cache. Update script with correct path."
			exit -1
		fi

		# Clear symfony cache
		cd $DAEMON_WEB_PATH
		php symfony cc
		RETVAL=$?

		# sanity check of return code
		if [ $RETVAL -eq 0 ]; then
			ok_print "Cache cleared successfully.";
		else
			err_print "Got unexpected return code $RETVAL when clearing cache."
		fi
	;;
	restart)
		echo "Restarting $NAME..."
		$0 stop
		$0 start
	;;
	status)
		echo -n "$NAME: "
		PID=$(get_pid)

		# see if pidfile exists
		if [ -f $PIDFILE ]; then
			# pid according to PIDFILE
			PIDF=$(cat $PIDFILE)
			RETVAL=$?

			# PID in PIDFILE running?
			if [ -z "$(ps axf |grep $PIDF |grep -v grep)" ]; then
				# since PID in PIDFILE is not running, see if it is running under a different PID (ie manually started)
				if [ -z $PID ]; then
					err_print "Process dead, but pidfile exists."
				else
					err_print "Process running under PID $PID, but pidfile contains $PIDF."
				fi
			else
				# sanity check of screen session PID and pidfile content, check that they are equal
				if [ "$PID" -eq "$PIDF" ]; then
					DAEMON_UPTIME=$(date -u -d "0 $(date +%s) sec-$(date +%s -r $PIDFILE) sec" +"%H:%M:%S")
					ok_print "$DAEMON running (PID $PID) uptime: $DAEMON_UPTIME (hh:mm:ss)."
				else
					err_print "$DAEMON running under PID $PID, but pidfile contains $PIDF."
				fi
			fi
		else
			# Since pidfile does not exist, check if screen session is running under another PID (ie manually started)
			if [ -z $PID ]; then
				err_print "$DAEMON not running."
			else
				err_print "$DAEMON running under pid $PID, but pidfile does not exist."
			fi

		fi
    ;;
  *)
	echo "Usage: $0 {start|stop|restart|status|clear-cache}"
	exit 1
    ;;
esac

exit $RETVAL