#!/usr/bin/env bash

# Installs the latest NodeJS release into $TARGETDIR (default: ~/.local)

true "${TARGETDIR:="$HOME/.local"}"

UNAME=$(uname -s)
case "${UNAME}" in
	Linux*) CURR_OS=LINUX;;
	Darwin*) CURR_OS=MAC;;
	*) CURR_OS=UNK;;
esac

get_latest_release() {
  curl --silent "https://api.github.com/repos/$1/releases/latest" | # Get latest release from GitHub api
    jq -r '.tag_name'
}

get_latest_release_tarball() {
  curl --silent "https://api.github.com/repos/$1/releases/latest" | # Get latest release from GitHub api
    jq -r '.tarball_url'
}

fetch() {
	local filename
	filename="$(lookup_file)"
	[[ -z "$filename" ]] && echo "unable to fetch filename" 1>&2 && return 1
	local path="/tmp/$filename"
	[[ -n "$DOWNLOADS" ]] && [[ -d "$DOWNLOADS" ]] && path="$DOWNLOADS/$filename"
	curl -L "https://go.dev/dl/$filename" -o "$path"
	echo "$path"
}

install_latest_nodejs() {
	#local dir="$1" path
	#[[ -z "$dir" ]] && dir="$TARGETDIR"
	#[[ -z "$dir" ]] && dir="$HOME/.local"
	#mkdir -p "$dir" 2>/dev/null
	#path="$(fetch)"
	#[[ -z "$path" ]] && echo "unable to fetch go tarball" 1>&2 && return 1
	#rm -rf "$dir/go" && tar -C "$dir" -xzf "$path" # rm is required by instructions
	#echo "Add $dir/go/bin to your path and optionally set GOBIN=~/.local/bin" 1>&2
	RELVERS=$(get_latest_release "nodejs/node")
	TARBALL=$(get_latest_release_tarball "nodejs/node")
	TMPDIR=$(mktemp -d)
	if [ $? -ne 0 ]; then
		echo "Error creating temp directory.."
		exit 1;
	fi

	echo "Latest NodeJS from Github release is ${RELVERS}..."

	echo "Downloading NodeJS ${RELVERS} from ${TARBALL}..."
	curl -L "https://github.com/nodejs/node/archive/refs/tags/${RELVERS}.tar.gz" -o "${TMPDIR}/nodejs_${RELVERS}.tar.gz"
	if [ $? -ne 0 ]; then
		echo "Error downloading latest nodejs tarball.."
		exit 1;
	fi

	mkdir "${TMPDIR}/nodejs"

	tar -xf "nodejs_${RELVERS}.tar.gz" -C "${TMPDIR}/nodejs" --strip-components=1
	if [ $? -ne 0 ]; then
		echo "Error while trying to untar tarball ${TMPDIR}/nodejs_${RELVERS}.tar.gz"
		exit 1
	fi

	cd "${TMPDIR}/nodejs"

	./configure
	if [ $? -ne 0 ]; then
		echo "Error configuring build"
		exit 1
	fi

	make
	if [ $? -ne - ]; then
		echo "Error running make"
		exit 1
	fi
}

install_latest_nodejs "$@"