#!/bin/sh
set -eu
PACKAGE=${1:-cockpit}
TARGET=${2:-jammy}
POCKET="${TARGET}-backports"

series_ver() {
    ver=$(wget -q -O- http://de.archive.ubuntu.com/ubuntu/dists/$1/universe/source/Sources.xz | xz -d | grep-dctrl -n -sVersion -XP $PACKAGE | sort -u | tail -n1)
    ver=${ver%~bpo*}
    if [ -z "$ver" ]; then
        ver=$(wget -q -O- http://de.archive.ubuntu.com/ubuntu/dists/${1%-*}/universe/source/Sources.xz | xz -d | grep-dctrl -n -sVersion -XP $PACKAGE | sort -u | tail -n1)
    fi
}

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

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

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

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

case "$TARGET" in
    jammy) VER=22.04 ;;
    impish) VER=21.10 ;;
    focal) VER=20.04 ;;
    *) echo "Unknown target $TARGET" >&2; exit 1 ;;
esac

series_ver "$POCKET"
dch --local ~bpo${VER}. --distribution $POCKET --force-distribution "No-change backport to $TARGET"
dpkg-buildpackage -S -sd -nc -v$ver
upload