#!/usr/bin/env bash

# Copyright 2023 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 errexit
set -o nounset
set -o pipefail

[[ -n ${DEBUG:-} ]] && set -o xtrace

scversion="stable"

if [[ "$OSTYPE" == "darwin"* ]]; then
    operatingsystem="darwin.x86_64"
else
    operatingsystem="linux.x86_64"
fi

if command -v shellcheck >/dev/null 2>&1; then exit 0; fi

wget -qO- "https://github.com/koalaman/shellcheck/releases/download/${scversion?}/shellcheck-${scversion?}.${operatingsystem?}.tar.xz" | tar -xJv
cp "shellcheck-${scversion}/shellcheck" ~/.local/bin/
rm -rf "./shellcheck-${scversion}"
shellcheck --version