## arg 1:  the new package version
post_install() {
	id slurm >&/dev/null
	if [ $? -ne 0 ]; then
		echo -e "\e[34;1m==>\e[39;1m Adding slurm system group... \e[0m"
		groupadd -g 64030 -r slurm
		[ $? -ne 0 ] && groupadd -r slurm

		echo -e "\e[34;1m==>\e[39;1m Adding slurm system user... \e[0m"
		useradd -r -c "Slurm Daemon" -d /var/log/slurm-llnl -g slurm -u 64030 slurm
		[ $? -ne 0 ] && useradd -r -c "Slurm Daemon" -d /var/log/slurm-llnl -g slurm slurm

		echo -e "\e[34;1m==>\e[39;1m Locking Slurm User Account...\e[0m"
		passwd -l slurm &>/dev/null
	fi

	# securing the log dir
	if [ -d /var/log/slurm-llnl ]; then
		chown -R slurm:slurm /var/log/slurm-llnl
	fi

	echo -e "\e[34;1m==>\e[39;1m NOTE: You have to create a slurm configuration-file in /etc/slurm-llnl/ \e[0m"
	echo -e "\e[34;1m==>\e[39;1m prior to starting any slurm daemons. \e[0m"
}

## arg 1:  the new package version
## arg 2:  the old package version
post_upgrade() {
	# THIS HAS TO BE REMOVED ONEDAY - TODO
	if [ -f /etc/slurm/slurm.conf ]; then
		mv /etc/slurm/* /etc/slurm-llnl/
		rmdir /etc/slurm
		echo -e "\e[34;1m==>\e[39;1m Your configuration-files were moved from /etc/slurm to /etc/slurm-llnl ! \e[0m"
	fi
}

## arg 1:  the old package version
pre_remove() {
	which systemctl >& /dev/null
	if [ $? -eq 0 ]; then
		echo -e "\e[34;1m==>\e[39;1m Stopping slurm daemons through SystemD... \e[0m"
		systemctl stop slurmd.service
		systemctl stop slurmdbd.service
		systemctl stop slurmctld.service

		echo -e "\e[34;1m==>\e[39;1m Disabling SystemD related file(s)... \e[0m"
		systemctl disable slurmd.service
		systemctl disable slurmdbd.service
		systemctl disable slurmctld.service
	else
		echo -e "\e[34;1m==>\e[39;1m Stopping slurm daemons... \e[0m"
		/etc/rc.d/slurm stop
		/etc/rc.d/slurmdbd stop
	fi
}

## arg 1:  the old package version
post_remove() {
	# Deleting remnant recusivly
	rm -rf /var/lib/slurm-llnl

	# Change directories which formerly belonged to slurm to be owned by root
	[[ -d /var/spool/slurm ]] && chown -R root:root /var/spool/slurm
	# notifying the user of kept dirs
	[[ -d /etc/slurm-llnl ]] && echo -e "\e[34;1m==>\e[39;1m NOTE: Custom configuration-file(s) in /etc/slurm-llnl/ were kept on your system.\e[0m"
	[[ -d /var/log/slurm-llnl ]] && chown -R root:root /var/log/slurm-llnl && echo -e "\e[34;1m==>\e[39;1m NOTE: Logfiles were preserved. They reside under /var/log/slurm-llnl .\e[0m"

	echo -e "\e[34;1m==>\e[39;1m Removing slurm system user/group... \e[0m"
	userdel slurm
}