#!/bin/bash

set -e

if [ -z "$*" ] ; then
	echo "Usage: $0 [commit [commit ..]]"
	exit 1
fi


curbranch=$(git rev-parse --abbrev-ref HEAD)

# assert we got a branch
[ -n "$curbranch" ]

if [ $curbranch = HEAD ] ; then
	echo "You are not currently on a branch, cannot cherry-pick"
	exit 1
fi

case $curbranch in
	patch-queue/*)
		debbranch=${curbranch/patch-queue\/}
		pqbranch=$curbranch
		;;
	*)
		debbranch=$curbranch
		pqbranch=patch-queue/$curbranch
		;;
esac

commits=$(git rev-parse "$@")

if ! git rev-parse $pqbranch &>/dev/null ; then
	gbp pq import
fi

git checkout $pqbranch

echo "Cherry-picking the following commits:"
echo "$commits"

picks=$(echo "$commits" | sed -e 's/^/pick /' -e 's/$/\\n/' | tr --delete '\n' )

# find the first debian commit
firstdebian=$(git log -i --grep "topic.*debian" --pretty=%h --reverse $debbranch..$pqbranch | head -1)

sedexpr="/$firstdebian/i$picks"

GIT_EDITOR="sed -i -e '$sedexpr'" git rebase --interactive --no-autosquash $debbranch


