#!/usr/bin/env bash
# Copyright 2021 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -o nounset
set -o errexit
set -o pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd -P)"
cd $REPO_ROOT

echo "Ensuring go version."
source ./hack/build/setup-go.sh

find . -name '*.go' -type f -print0 | xargs -0 gofmt -s -w
diff=$(find . -name '*.go' -type f -print0 | xargs -0 gofmt -s -d)
if [[ -z "$diff" ]]; then
  exit 0
fi

echo "$diff"
echo
echo "ERROR: found unformatted go files, fix with:" >&2
echo "  make update-gofmt" >&2
exit 1
