#!/bin/bash

# Copyright 2014 Google Inc. All rights reserved.
#
# 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.

# GoFmt apparently is changing @ head...

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

KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..

GO_VERSION=($(go version))

if [[ -z $(echo "${GO_VERSION[2]}" | grep -E 'go1.2|go1.3|go1.4') ]]; then
  echo "Unknown go version '${GO_VERSION}', skipping gofmt."
  exit 0
fi

cd "${KUBE_ROOT}"

find_files() {
  find . -not \( \
      \( \
        -wholename './output' \
        -o -wholename './_output' \
        -o -wholename './release' \
        -o -wholename './target' \
        -o -wholename '*/third_party/*' \
        -o -wholename '*/Godeps/*' \
      \) -prune \
    \) -name '*.go'
}

GOFMT="gofmt -s"
bad_files=$(find_files | xargs $GOFMT -l)
if [[ -n "${bad_files}" ]]; then
  echo "!!! '$GOFMT' needs to be run on the following files: "
  echo "${bad_files}"
  exit 1
fi
