#!/bin/sh
# Builds hammerhead for every release platform and packs the archives into dist/.
#
#   deploy/build.sh [version]      version defaults to `git describe`
#
# Output:
#   dist/bin/<os>_<arch>/hammerhead             the raw binaries (the Docker image uses the linux ones)
#   dist/hammerhead_<version>_<os>_<arch>.tar.gz or .zip
#   dist/SHA256SUMS
#
# Releases are published for linux/amd64 and windows/amd64 only. Set TARGETS="linux/arm64 darwin/arm64"
# (any GOOS/GOARCH pair Go supports) to build something else by hand.
set -eu
NAME=hammerhead
cd "$(dirname "$0")/.."
VERSION=${1:-$(git describe --tags --always 2>/dev/null || echo dev)}
TARGETS=${TARGETS:-"linux/amd64 windows/amd64"}

rm -rf dist
mkdir -p dist/bin dist/stage
for t in $TARGETS; do
	os=${t%/*}
	arch=${t#*/}
	ext=""
	[ "$os" = windows ] && ext=".exe"
	out="dist/bin/${os}_${arch}"
	mkdir -p "$out"
	echo "building $NAME $VERSION for $os/$arch"
	CGO_ENABLED=0 GOOS=$os GOARCH=$arch GOARM=7 \
		go build -trimpath -ldflags "-s -w -X main.version=$VERSION" -o "$out/$NAME$ext" "./cmd/$NAME"

	pkg="${NAME}_${VERSION}_${os}_${arch}"
	stage="dist/stage/$pkg"
	mkdir -p "$stage"
	cp "$out/$NAME$ext" "$stage/"
	for f in LICENSE README.md .env.example; do
		[ -f "$f" ] && cp "$f" "$stage/"
	done
	if [ "$os" = linux ]; then
		cp deploy/install.sh deploy/setup.sh "deploy/$NAME.service" deploy/docker-compose.yml "$stage/"
		chmod +x "$stage/install.sh"
	fi
	if [ "$os" = windows ] && command -v zip >/dev/null 2>&1; then
		(cd dist/stage && zip -qr "../$pkg.zip" "$pkg")
	else
		tar -C dist/stage -czf "dist/$pkg.tar.gz" "$pkg"
	fi
done
rm -rf dist/stage
(cd dist && sha256sum $(ls | grep -E '\.(tar\.gz|zip)$') > SHA256SUMS)
echo "done: $(ls dist | grep -cE '\.(tar\.gz|zip)$') archives in dist/"