#!/usr/bin/bash
#----------------------------------------------------------------------
#
#----------------------------------------------------------------------


# config...
CT_DIR=/etc/pve/lxc/
SHARE_ROOT=/media/shared/


#----------------------------------------------------------------------

source ./.pct-helpers


# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

case $1 in
	-h|--help)
		echo "Create a clone and optionally a replate from a CT with directory mounts"
		echo
		echo "Usage:"
		echo "    `basename $0` SOURCE_ID CLONE_ID [TEMPLATE_ID]"
		echo
		exit
		;;
	-*)
		echo "Unknown option: $1"
		exit
		;;
esac

# XXX better argument handling / help...
id=$1
to=$2
tpl=$3


# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

ct=${CT_DIR}/${id}.conf
host=$(ct2hostname $id)
running=$(pct list | grep "running\s*$host\s*$")


#----------------------------------------------------------------------
# checks...

# error checking...
if [ -z $id ] || [ -z $to ] ; then
	echo ERR need both id and target id 1>&2
	exit 1
fi
if [ $id = $to ] ; then
	echo ERR need id and target id must be different 1>&2
	exit 1
fi

if ! [ -e $ct ] ; then
	echo ERR $ct does not exist.  1>&2
	exit 1
fi
if [ -e ${CT_DIR}/${to}.conf ] ; then
	echo ERR $to already exists. 1>&2
	exit 1
fi
if ! [ -z $tpl ] && [ -e ${CT_DIR}/${tpl}.conf ] ; then
	echo ERR $to already exists. 1>&2
	exit 1
fi

# check mount points...
IFS=$'\n' mounts=($(cat $ct | grep 'mp[0-9]*:'))
# check...
for mp in ${mounts[@]} ; do
	if ! [ $(grep ": $SHARE_ROOT" <<< $mp) ] ; then
		echo "ERR mountpoint: \"$mp\" heeds to handled manually." 1>&2
		exit 1
	fi
done


#----------------------------------------------------------------------
# after this point we are making changes...

# need to shutdown to clone...
# XXX might be a good idea to also do this with a snapshot...
if ! [ -z $running ] ; then 
	@ pct shutdown $id
fi


# delete mount points...
for mp in ${mounts[@]} ; do
	@ pct set ${id} -delete ${mp/: */}
done


# clone...
@ pct clone ${id} ${to} --hostname ${host} 
@ pct set ${to} -onboot 0


# startup if we stopped...
if ! [ -z $running ] ; then 
	@ pct start $id
fi


#----------------------------------------------------------------------
# after this point are are not affecting uptime...

# make template...
if ! [ -z $tpl ] ; then
	@ pct clone ${to} ${tpl} --hostname ${host} 
	@ pct template ${tpl}
fi

#----------------------------------------------------------------------

@ ./make-shares


#----------------------------------------------------------------------
# vim:set ts=4 sw=4 nowrap :