#! /bin/sh

set -e

prevver="$2"

add_munin_system_user() {
	if ! getent passwd munin >/dev/null; then
		adduser --group --system --no-create-home --home /var/lib/munin munin;
	fi	
}

fixperms() {
        dpkg-statoverride --list /var/log/munin >/dev/null || \
		dpkg-statoverride --update --add munin adm 0750 /var/log/munin
        dpkg-statoverride --list /var/run/munin >/dev/null || \
		dpkg-statoverride --update --add munin root 0755 /var/run/munin
        dpkg-statoverride --list /var/lib/munin >/dev/null || \
		dpkg-statoverride --update --add munin munin 0755 /var/lib/munin
        dpkg-statoverride --list /var/lib/munin/plugin-state >/dev/null || \
		dpkg-statoverride --update --add munin munin 0775 /var/lib/munin/plugin-state
}

init_plugins() {
	TMPFILE=`mktemp /tmp/munin-node.configure.XXXXXXXXXX`
	if [ "$prevver" ]; then
		echo -n "Initializing new plugins.."
		munin-node-configure --shell --newer "${prevver%-*}" > $TMPFILE || rm -f $TMPFILE
		if [ -f $TMPFILE ] ; then 
			sh < $TMPFILE  
		else
			echo "failed."
		fi
	else
		echo -n "Initializing plugins.."
		munin-node-configure --shell > $TMPFILE || rm -f $TMPFILE
		if [ -f $TMPFILE ] ; then
			sh < $TMPFILE
		else 
			echo "failed."
		fi
	fi
	echo "done."
	rm -f $TMPFILE
}

case "$1" in
	configure)
		add_munin_system_user
		fixperms
		init_plugins
		;;
	abort-upgrade|abort-deconfigure|abort-remove)
		:
		;;
	*)
		echo "Called with unknown argument $1, bailing out."
		exit 1
		;;
esac

# Automatically added by dh_installinit
if [ -x "/etc/init.d/munin-node" ]; then
	update-rc.d munin-node defaults 98 20 >/dev/null
	if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
		invoke-rc.d munin-node start || true
	else
		/etc/init.d/munin-node start || true
	fi
fi
# End automatically added section