#!/bin/sh

# number of backpus per level
n=7
backupDir=${1:-~/.backup}

mkdir -p $backupDir
cd $backupDir

pos=$(($(cat pos 2>/dev/null || echo 0)+1))

next_level()
(
	level=$1
	distance=$(echo "$n^$level" | bc)
	if [ $(($pos%$distance)) -eq 0 ]; then
		next_level $(($level+1))
		if [ -e $(($level-1))-0 ]; then
			rm -rf $level-$((($pos/$distance)%$n))
			mv $(($level-1))-0 $level-$((($pos/$distance)%$n))
		fi
	fi
)
next_level 1

ssh nightbuild@minidvblinux.de '
	cd backup
	mkdir -p db
	for db in bug cms data forum; do
		mysqldump -u $db -p$db mld_$db > db/$db.sql
	done
'
rsync -acLz --skip-compress=bz2/gz/iso/jpg/opk/png/sfs/tgz --delete -e ssh nightbuild@minidvblinux.de:backup/ 0-$(($pos%$n)) --link-dest=../0-$((($pos-1)%$n)) 2>&1 | grep -v adding
touch 0-$(($pos%$n))

echo $pos > pos