#!/bin/bash

set -e

pushd images

prevbuild=$(<lastbuild)
buildstem=$(python -c "print '$prevbuild'.split('.')[0][:-2];")
nextbuild=$(python -c "print '%0.2d' % (int('$prevbuild'.split('.')[0][-2:]) + 1);")
buildname=$buildstem$nextbuild

date ; date >> ${buildname}.buildlog
echo building $buildname ; echo building $buildname >> ${buildname}.buildlog
/usr/bin/time nice setarch i586 \
    make -f ../Makefile ${buildname}.done >> ${buildname}.buildlog 2>&1

for ext in .tree .{2,4}gremovable.img.tar.lzma xo.tree xo.img ; do
    prevsize=$(< $prevbuild$ext.size.txt)
    nextsize=$(< $buildname$ext.size.txt)
    python -c "oldk = $prevsize ; newk = $nextsize ; print '%0.2fM / %dK' % (newk / 1024.0, newk - oldk)" > $buildname$ext.size-change.txt
done

diff -U 1 $prevbuild.tree.packages.txt $buildname.tree.packages.txt | grep -v ^@@ > $buildname.tree.package-changes.txt

xdelta delta $prevbuild.tree.tar $buildname.tree.tar $buildname.tree.tar.xdelta-to-$prevbuild
xdelta delta ${prevbuild}xo.tree.tar ${buildname}xo.tree.tar ${buildname}xo.tree.tar.xdelta-to-${prevbuild}xo

echo $buildname > lastbuild
date ; date >> ${buildname}.buildlog

popd

python appliance.py