#!/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.


#
# Downloads and installs protobuf
#
set -eu -o pipefail

PROTOBUF_VERSION=3.11.4
GOARCH=$(go env GOARCH)
GOOS=$(go env GOOS)
PROTOBUF_DIR=$(mktemp -d)

case $GOARCH in

arm64)
	wget -O "$PROTOBUF_DIR/protobuf" "https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOBUF_VERSION/protoc-$PROTOBUF_VERSION-linux-aarch64.zip"
	unzip "$PROTOBUF_DIR/protobuf" -d /usr/local
	;;

amd64|386)
	if [ "$GOOS" = windows ]; then
		wget -O "$PROTOBUF_DIR/protobuf" "https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOBUF_VERSION/protoc-$PROTOBUF_VERSION-win32.zip"
	elif [ "$GOOS" = linux ]; then
		wget -O "$PROTOBUF_DIR/protobuf" "https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOBUF_VERSION/protoc-$PROTOBUF_VERSION-linux-x86_64.zip"
	fi
	unzip "$PROTOBUF_DIR/protobuf" -d /usr/local
	;;

ppc64le)
	wget -O "$PROTOBUF_DIR/protobuf" "https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOBUF_VERSION/protoc-$PROTOBUF_VERSION-linux-ppcle_64.zip"
	unzip "$PROTOBUF_DIR/protobuf" -d /usr/local
	;;
*)
	wget -O "$PROTOBUF_DIR/protobuf" "https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOBUF_VERSION/protobuf-cpp-$PROTOBUF_VERSION.zip"
	unzip "$PROTOBUF_DIR/protobuf" -d /usr/src/protobuf
	cd "/usr/src/protobuf/protobuf-$PROTOBUF_VERSION"
	./autogen.sh
	./configure --disable-shared
	make
	make check
	make install
	ldconfig
	;;
esac
rm -rf "$PROTOBUF_DIR"
