#!/bin/bash

. /etc/remote-backup/defaults.conf

declare -i i=0

usage(){
	cat <<-EOF
		set-backup -N <name>
		           [-R <device>]			/dev/... (default: $MOUNT_DEVICE)
		           -s <remote-dir>			[host:]/path|host::module (default: $REMOTE_LOCATION)
		           [-d <dir>]				/path/dest (default: $SNAPSHOT_RW)
		           [-X <exclude1> [-X ...]]
		           [-b <bwlimit>]			in kBytes/s (default: $BWLIMIT)
		           [-n <nb_hist>]			(default: $MAX_ROTATE)
	EOF
	exit 1
}

while getopts 'R:d:s:X:N:n:b:' opt
do
	case $opt in
		R) loc_REMOUNT=true
		   loc_MOUNT_DEVICE="$OPTARG"
		   ;;
		d) loc_SNAPSHOT_RW="$OPTARG"
		   ;;
		s) loc_REMOTE_LOCATION="$OPTARG"
		   ;;
		X) loc_EXCLUDE[$i]="$OPTARG"
		   i+=1
		   ;;
		N)loc_NAME="$OPTARG"
		   ;;
		n) loc_MAX_ROTATE="$OPTARG"
		   ;;
		b) loc_BWLIMIT="$OPTARG"
		   ;;
		*) usage ;;
	esac
done

[ -z "$loc_REMOTE_LOCATION" -o -z "$loc_NAME" ] && usage

[ ! -d "/etc/remote-backup/${loc_NAME//\//_}" ] \
		&& mkdir "/etc/remote-backup/${loc_NAME//\//_}"

[ -z "$loc_REMOUNT" -a -z "$REMOUNT" ] && echo "Check config file" && exit 2
[[ "$REMOUNT" == "true" ]] && [ -z "$loc_MOUNT_DEVICE" -a -z "$MOUNT_DEVICE" ] && echo "Check config file" && exit 2
[ -z "$loc_SNAPSHOT_RW" -a -z "$SNAPSHOT_RW" ] && echo "Check config file" && exit 2
[ -z "$loc_REMOTE_LOCATION" -a -z "$REMOTE_LOCATION" ] && echo "Check config file" && exit 2
[ -z "$loc_EXCLUDES" -a -z "$EXCLUDES" ] && echo "Check config file" && exit 2
[ -z "$loc_MAX_ROTATE" -a -z "$MAX_ROTATE" ] && echo "Check config file" && exit 2
[ -z "$loc_BWLIMIT" -a -z "$BWLIMIT" ] && echo "Check config file" && exit 2

for param in NAME REMOUNT MOUNT_DEVICE SNAPSHOT_RW REMOTE_LOCATION \
		MAX_ROTATE BWLIMIT
do
	if [ -n "$(eval echo '$loc_'"$(echo $param)")" ]
	then
		eval echo $param='"$loc_'$(echo $param)'"'
	fi
done > /etc/remote-backup/"${loc_NAME//\//_}"/config

if [ ${#loc_EXCLUDE[@]} -gt 0 ]
then
	echo EXCLUDES=/etc/remote-backup/"${loc_NAME//\//_}"/excludes \
				  >> /etc/remote-backup/"${loc_NAME//\//_}"/config
	for indice in ${!loc_EXCLUDE[@]}
	do
		echo "${loc_EXCLUDE[$indice]}"
	done > /etc/remote-backup/"${loc_NAME//\//_}"/excludes
fi