#!/bin/sh
set -eu
PACKAGE=${1:-cockpit}

series_ver() {
    ver=$(wget -q -O- http://ftp.debian.org/debian/dists/${1}/main/source/Sources.xz | xz -d | grep-dctrl -n -sVersion -XP $PACKAGE | sort -u | tail -n1)
    ver=${ver%~bpo*}
}

upload() {
    cat ../${PACKAGE}*_source.changes

    read -p "Upload? [y/N] " answer
    if [ "$answer" = y ]; then
        dput ../${PACKAGE}_*_source.changes
    fi

    cd ..
    rm *bpo*
    rm -r ${PACKAGE}-*
}

mkdir /tmp/backport
cd  /tmp/backport
apt-get source $PACKAGE
cd ${PACKAGE}-*

# bullseye
series_ver bullseye-backports
[ ! -x debian/adjust-for-release ] || debian/adjust-for-release bullseye
dch --local ~bpo11+ --distribution bullseye-backports --force-distribution "No-change backport to Debian Bullseye"
dpkg-buildpackage -S -sd -nc -v$ver
upload