#!/bin/bash
set -xeuo pipefail
IFS=$'\n\t'

NODE_INSTALL_VERSION=${1:-7.x}
YARN_INSTALL_VERSION=${2:-0.27.5-1}

# Map MAJOR.MINOR.patch -> MAJOR.x
NODE_INSTALL_VERSION=`echo $NODE_INSTALL_VERSION | sed -r -e "s/([0-9]+)\.[0-9]+.*/\1\.x/g"`

# add official debian repos for node and yarn
curl -sS -L https://deb.nodesource.com/setup_${NODE_INSTALL_VERSION} | bash -
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list

apt-get update
apt-get install -y nodejs yarn=$YARN_INSTALL_VERSION