#!/bin/bash

# Update node install & modules from Chromium project.

set -e

cd /usr/local/src/extensions
if [[ ! -d nodejs ]]; then
	mkdir nodejs
fi
cd nodejs

URL_GS_BASE='https://storage.googleapis.com/chromium-nodejs'
URL_CHROMIUM_BASE='https://chromium.googlesource.com/chromium/src/+/HEAD'
URL_DEPS="${URL_CHROMIUM_BASE}/DEPS?format=TEXT"
URL_HASH_NODE="${URL_CHROMIUM_BASE}/third_party/node/linux/node-linux-x64.tar.gz.sha1?format=TEXT"
URL_HASH_MOD="${URL_CHROMIUM_BASE}/third_party/node/node_modules.tar.gz.sha1?format=TEXT"

hash=$(curl -s "${URL_DEPS}" | base64 -d)
VER=$(echo "${hash}" | grep -o 'chromium-nodejs/[0-9.]*' | sort -u | cut -d/ -f2)

hash=$(curl -s "${URL_HASH_NODE}" | base64 -d)
dir='node-linux-x64'
cur_hash=$(cat "${dir}/hash" 2>/dev/null || :)
if [[ ${cur_hash} != "${hash}" ]]; then
	rm -rf "${dir}" "${cur_hash}"
	wget -m -nd "${URL_GS_BASE}/${VER}/${hash}"
	echo "Unpacking ${hash} into ${dir}"
	tar xf "${hash}"
	echo "${hash}" >"${dir}/hash"
fi

ln -sfT "${dir}" current


hash=$(curl -s "${URL_HASH_MOD}" | base64 -d)
dir='node_modules'
cur_hash=$(cat "${dir}/hash" 2>/dev/null || :)
if [[ ${cur_hash} != "${hash}" ]]; then
	rm -rf "${dir}" "${cur_hash}"
	wget -m -nd "${URL_GS_BASE}/${hash}"
	echo "Unpacking ${hash} into ${dir}"
	tar xf "${hash}"
	echo "${hash}" >"${dir}/hash"
fi

ln -sfT ../../node_modules/eslint/bin/eslint.js current/bin/eslint


echo "Up-to-date now"


exit 0
# This is for nodejs directly.
URL_BASE='https://nodejs.org/dist/latest-v6.x'
SUMS='SHASUMS256.txt'
URL_SUMS="${URL_BASE}/${SUMS}"

wget -m -nd "${URL_SUMS}"

read sum tar < <(grep 'linux-x64.tar.xz' "${SUMS}")
dir=${tar%.tar.xz}

URL_TAR="${URL_BASE}/${tar}"
wget -m -nd "${URL_TAR}"

if [[ ! -d ${dir} ]] ; then
	tar xf "${tar}"
	ln -sfT "${dir}" current
fi