#!/usr/bin/env bash
#
# Downloads and installs protobuf
#
set -eux -o pipefail

PROTOBUF_VERSION=3.5.1
GOARCH=$(go env GOARCH)
GOOS=$(go env GOOS)
PROTOBUF_DIR=$(mktemp -d)

case $GOARCH in

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

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

*)
	wget -O $PROTOBUF_DIR/protobuf "https://github.com/google/protobuf/releases/download/v$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