#!/usr/bin/env bash

# Copyright 2018 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 -euo pipefail

SCRIPT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "${SCRIPT_ROOT}/.." && pwd)"
pushd ${REPO_ROOT} > /dev/null

find_files() {
  find . -not \( \
      \( \
        -wholename '*/third-party/*' \
        -o -wholename '*/pkg/client/*' \
        -o -wholename '*/*deepcopy.go' \
        -o -wholename '*/test/common/bindata.go' \
        -o -wholename '*/doc.go' \
      \) -prune \
    \) -name '*.go'
}

ERRORPKG="grep -l fmt.Errorf"
bad_files=$(find_files | xargs $ERRORPKG) || true
popd > /dev/null

if [[ -n "${bad_files}" ]]; then
  echo "Please Switch from fmt.Errorf to \`errors\` to fix the following files:"
  echo "${bad_files}"
  exit 1
fi
