#!/usr/bin/env sh
#
# Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
#
# 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 -e

repo_root_dir="$1"
repo_base="$2"
repo_name="$3"

apk update
apk add --no-cache \
    ca-certificates \
    make \
    bash \
    go \
    git \
    musl-dev \
    curl \
    openssl \
    tar \
    gzip \
    gcc \
    sed

GOLANG_VERSION="$(sed -rn 's/FROM (eu\.gcr\.io\/gardener-project\/3rd\/golang|golang):([^ ]+).*/\2/p' < "$repo_root_dir/Dockerfile")"

export \
    GOROOT="$(go env GOROOT)" \
    GOOS="$(go env GOOS)" \
    GOARCH="$(go env GOARCH)" \
    GOHOSTOS="$(go env GOHOSTOS)" \
    GOHOSTARCH="$(go env GOHOSTARCH)"

echo "Downloading go $GOLANG_VERSION"
wget -q -O - "https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz" | tar zx -C /usr/local
cd /usr/local/go/src
echo "Executing make on go $GOLANG_VERSION"
./make.bash > /dev/null 2>&1

export GOPATH="$(mktemp -d)"
export GOBIN="$GOPATH/bin"
export PATH="$GOBIN:$PATH"

REPO_BASE="$GOPATH/src/$repo_base"
mkdir -p "$REPO_BASE"
REPO_PATH="$REPO_BASE/$repo_name"
cp -R "$repo_root_dir" "$REPO_PATH"

current_dir="$(pwd)"
cd "$REPO_PATH"
make install-requirements
cd "$current_dir"

echo "$EFFECTIVE_VERSION" > "$REPO_PATH/VERSION"
cur_dir="$(pwd)"
cd "$REPO_PATH"
if ! make generate; then
  cd "$cur_dir"
  exit 1
fi
cd "$cur_dir"
cp -RT "$REPO_PATH/" "$repo_root_dir/"

