#!/bin/bash

set -euo pipefail

if [[ $# -ne 2 ]]; then
	echo "" 1>&2
	echo "Compiler for a Go PACKAGE producing windows/GOARCH binaries." 1>&2
	echo "" 1>&2
	echo "usage: $0 GOARCH PACKAGE" 1>&2
	echo "" 1>&2
	echo "GOARCH must be one of: 386, amd64." 1>&2
	echo "" 1>&2
	echo "Features:" 1>&2
	echo "" 1>&2
	echo "* automatically sets -tags=ooni_psiphon_config when possible;" 1>&2
	echo "" 1>&2
	echo "* if GOLANG_EXTRA_FLAGS is set, pass it to the Go compiler." 1>&2
	echo "" 1>&2
	echo "Example:" 1>&2
	echo "" 1>&2
	echo "  ./CLI/go-build-windows amd64 ./internal/cmd/miniooni" 1>&2
	echo "" 1>&2
	exit 1
fi

GOOS=windows
GOARCH=$1
PACKAGE=$2

if [[ -f ./internal/engine/psiphon-config.json.age &&
	-f ./internal/engine/psiphon-config.key ]]; then
	OONI_PSIPHON_TAGS=ooni_psiphon_config
else
	OONI_PSIPHON_TAGS=""
fi

PRODUCT=$(basename $PACKAGE)

if [[ $GOARCH == "amd64" ]]; then
	CC=x86_64-w64-mingw32-gcc
elif [[ $GOARCH == "386" ]]; then
	CC=i686-w64-mingw32-gcc
else
	echo "FATAL: unsupported GOARCH: $GOARCH" 1>&2
	exit 1
fi

set -x
export CC=$CC
export CGO_ENABLED=1
export GOOS=$GOOS
export GOARCH=$GOARCH
go build -tags=$OONI_PSIPHON_TAGS -ldflags="-s -w" \
	-o ./CLI/$PRODUCT-$GOOS-$GOARCH ${GOLANG_EXTRA_FLAGS:-} \
	$PACKAGE