#!/bin/sh -e

cd "$(dirname "$(readlink -f "$0")")"
git rev-parse --is-inside-work-tree >/dev/null

upstream="$(git rev-parse --abbrev-ref "@{u}" 2>/dev/null || true)"
if [ -z "$upstream" ]; then
	echo "*** ERROR: No upstream is configured for current branch"
	exit 1
fi

echo ""
echo "Going to reset current branch to: ${upstream}"

echo ""
echo "*** WARNING: These local commits will be lost:"
git log "${upstream}..HEAD" --oneline

echo ""
echo "*** WARNING: These local files will be reset:"
git diff "HEAD..${upstream}" --name-only

printf "\nExecute [Y,N]?"; read -r yn
if [ "$yn" = "${yn#[Yy]}" ]; then
    echo "Aborting reset..."
else
    git fetch --all
    git reset --hard "$upstream"
    echo "Done."
fi

exit 0