#!/bin/bash

set -eo pipefail

# running in guest

guest_name="$(qubesdb-read /name)"

guest_repo_dir="$(dirname $(realpath ""$0""))"
echo $guest_repo_dir
pushd ${guest_repo_dir} >/dev/null

if git remote | grep -Fq 'dom0'; then
	echo "(${guest_name}) remote 'dom0' already exists" >&2
else
	echo "(${guest_name}) setting up remote 'dom0' to pull changes via bundle" >&2
	git remote add dom0 ${guest_repo_dir}/.bundles/dom0.bundle
fi

branch=$(git branch --show-current)
echo "(${guest_name}) creating bundle for branch '${branch}'" >&2
mkdir -p .bundles
git bundle create .bundles/domu.bundle "${branch}"

popd >/dev/null

# piped to bash in dom0

cat <<-DOM0
set -eo pipefail

echo "(dom0) bringing bundle from qubes '${guest_name}'" >&2

qvm-run -p ${guest_name} "cat ${guest_repo_dir}/.bundles/domu.bundle" </dev/null >/tmp/saltstuff.bundle

echo "{dom0} cloning into \$1; checking out branch '${branch}'" >&2

git clone /tmp/saltstuff.bundle -b "${branch}" "\$1"

pushd "\$1"

echo "{dom0} setting up remote '${guest_name}' to push/pull changes via bundle" >&2

mkdir .bundles
mv /tmp/saltstuff.bundle .bundles/domu.bundle
git remote remove origin
git remote add "${guest_name}" \${pwd}/.bundles/domu.bundle

# ensure remote refs are present in each repo
git fetch "${guest_name}" # ensure remote refs are present in the dom0 repo

git bundle create .bundles/dom0.bundle main~1..main main

qvm-run -p "${guest_name}" "cat > ${guest_repo_dir}/.bundles/dom0.bundle" <.bundles/dom0.bundle

qvm-run -p "${guest_name}" "cd ${guest_repo_dir} && git fetch dom0" </dev/null

# configure pointer to guest VM and path

echo "GUEST=${guest_name}" > .bundle-env
echo "GUEST_REPO=${guest_repo_dir}" >> .bundle-env

echo "${dom0} has pulled!" >&2

popd
DOM0