#!/bin/sh
set -eu

here=$(cd "$(dirname "$0")" && pwd)
out=${1:-./dist}
version=${VERSION:-$(git -C "$here" describe --tags --always --dirty 2>/dev/null || echo dev)}
targets="linux/amd64 linux/arm64 darwin/arm64 darwin/amd64 windows/amd64"

mkdir -p "$out"
out=$(cd "$out" && pwd)
manifest="$out/manifest.json"
rm -f "$manifest"

hash_of() {
	if command -v sha256sum >/dev/null 2>&1; then
		sha256sum "$1" | cut -d' ' -f1
	else
		shasum -a 256 "$1" | cut -d' ' -f1
	fi
}

size_of() {
	wc -c <"$1" | tr -d ' '
}

printf '[\n' >"$manifest"
first=1
for target in $targets; do
	goos=${target%/*}
	goarch=${target#*/}
	name="devplace-node-$goos-$goarch"
	if [ "$goos" = "windows" ]; then
		name="$name.exe"
	fi
	(cd "$here" && CGO_ENABLED=0 GOOS="$goos" GOARCH="$goarch" go build -trimpath -ldflags "-s -w -X main.Version=$version" -o "$out/$name" .)
	if [ "$first" -eq 0 ]; then
		printf ',\n' >>"$manifest"
	fi
	first=0
	printf '  {"name": "%s", "os": "%s", "arch": "%s", "sha256": "%s", "size": %s, "version": "%s"}' \
		"$name" "$goos" "$goarch" "$(hash_of "$out/$name")" "$(size_of "$out/$name")" "$version" >>"$manifest"
done
printf '\n]\n' >>"$manifest"

for target in $targets; do
	goos=${target%/*}
	goarch=${target#*/}
	name="devplace-node-$goos-$goarch"
	if [ "$goos" = "windows" ]; then
		name="$name.exe"
	fi
	echo "$out/$name"
done
echo "$manifest"