#! /bin/bash -e
# Authors: Matthias Klose <doko@ubuntu.com>, Martin Pitt <martin.pitt@ubuntu.com>
# License; Public Domain
#
# command for finding affected packages:
# grep-dctrl -sPackage,Maintainer,Original-Maintainer -FVersion ubuntu archive.ubuntu.com_ubuntu_dists_feisty_*_source_Sources | grep-dctrl -sPackage -FMaintainer -v -n ubuntu

export DEBEMAIL=martin.pitt@ubuntu.com
DIST=feisty
logentry="debian/control: Update maintainer fields according to debian-maintainer-field spec."

# update the version number for a mere rebuild upload
next_version_rebuild()
{
    local ver=$1

    case "$ver" in
    *ubuntu*)
	rel=${ver#*ubuntu}
	local base=$(echo $ver | sed 's/[0-9]*$//')
	echo "$base$(($rel+1))"
	;;
    *build*)
	rel=${ver#*build}
	local base=$(echo $ver | sed 's/[0-9]*$//')
	echo "$base$(($rel+1))"
	;;
    *)
	echo ${ver}build1
    esac
}

# update the version number for a source-changes upload
next_version()
{
    local ver=$1

    case "$ver" in
    *ubuntu*)
	rel=${ver#*ubuntu}
	local base=$(echo $ver | sed 's/[0-9]*$//')
	echo "$base$(($rel+1))"
	;;
    *build*)
	echo ${ver%build*}ubuntu1
	;;
    *)
	echo ${ver}ubuntu1
    esac
}

do_source_changes()
{
    # main or universe?
    if grep -q 'Section:.*universe' ../show; then
        maint='Ubuntu MOTU Developers <ubuntu-motu@lists.ubuntu.com>'
    else
        maint='Ubuntu Core Developers <ubuntu-devel-discuss@lists.ubuntu.com>'
    fi

    sed -i "s/^\(Maintainer:.*$\)/Maintainer: $maint\nXSBC-Original-\1/" debian/control
    if [ -e debian/control.in ]; then
        sed -i "s/^\(Maintainer:.*$\)/Maintainer: $maint\nXSBC-Original-\1/" debian/control.in
    fi
}

# fetch source $1, update version number, changelog, and call do_source_changes
update_pkg()
{
    name=$1
    tmpdir=$(mktemp -d ./pkg.XXXXXX)

    if ! apt-cache showsrc $p > $tmpdir/show; then
	rm -rf $tmpdir
	return
    fi
    version=$(awk '/^Version:/ {print $2}' $tmpdir/show | sort -n | tail -n 1)
    nextver=$(next_version_rebuild $version)
    case "$version" in
    *-*)
	olddir="$name-$(echo ${version#*:*} | sed 's/-[^-]*$//')"
	newdir=$olddir
	;;
    *)
	olddir="$name-${version#*:*}"
	newdir="$name-${nextver#*:*}"
    esac
    echo "$name: $version -> $nextver ($olddir $newdir)"
    (
	cd $tmpdir
	apt-get -q source $name
	[ $olddir = $newdir ] || mv $olddir $newdir
	cd $newdir
	chmod 644 debian/changelog
	debchange -p -D $DIST -v $nextver "$logentry"
        do_source_changes
	echo "building ..."
	dpkg-buildpackage -rfakeroot -S -us -uc > ../build.log 2>&1
    )
    if [ $? -ne 0 ]; then
	echo "ERROR building $name"
	mv $tmpdir failed-$name
    else
	mv $tmpdir/${name}_${nextver#*:*}* DONE/
	mv $tmpdir/build.log DONE/${name}_${nextver#*:*}.buildlog
	rm -rf $tmpdir
    fi
}

#
# entry point
#

base=$(basename $0)

if [ $# -eq 0 ]; then
    echo >&2 "usage: $base <srcname> [<srcname> ...]"
    exit 1
fi

mkdir DONE

for p in "$@"; do
    update_pkg $p
done