#!/usr/bin/env bash

#   Copyright The containerd 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.

: ${RUNHCS_VERSION:="$(grep 'Microsoft/hcsshim ' go.mod | awk '{print $2}')"}
: ${RUNHCS_REPO:="https://github.com/Microsoft/hcsshim.git"}
: ${DESTDIR:=''}
: ${GOOS:="windows"}

tmpdir="$(mktemp -d)"

cleanup() {
    rm -rf "$tmpdir"
}

trap 'cleanup' EXIT

export GOOS

(
    set -e -x
    cd "$tmpdir"
    git init .
    git remote add origin "$RUNHCS_REPO"
    git fetch --tags --depth=1 origin ${RUNHCS_VERSION}
    git checkout "refs/tags/${RUNHCS_VERSION}" || git checkout "refs/heads/${RUNHCS_VERSION}" || git checkout "${RUNHCS_VERSION}"
    GO111MODULE=on go build -mod=vendor -o "${DESTDIR}/containerd-shim-runhcs-v1.exe" ./cmd/containerd-shim-runhcs-v1
)