#!/usr/bin/env bash
set -euo pipefail

version=18.10.0
arch="$(uname -m)"

case $arch in
    x86_64)
        tarball="node-v$version-linux-x64.tar.xz"
        sha256=1aff4537bbb81c29c5c1c7c96379c6a2133b43651812745b524db8e1b65ee12b
        ;;

    aarch64)
        tarball="node-v$version-linux-arm64.tar.xz"
        sha256=bbe88afe35569780aae8a84d9be8b55e4944d13e9212b0d51883a5dcf6a7de8b
        ;;
esac

check_version() {
    out="$(node --version)" && [ "$out" = "v$version" ]
}

if ! check_version; then
    tmpdir="$(mktemp -d)"
    trap 'rm -r "$tmpdir"' EXIT
    cd "$tmpdir"
    curl_opts=(-fLO)
    if [ -n "${CUSTOM_CA_CERTIFICATES:-}" ]; then
        curl_opts+=(--cacert "${CUSTOM_CA_CERTIFICATES}")
    fi
    curl "${curl_opts[@]}" "https://nodejs.org/dist/v$version/$tarball"
    sha256sum -c <<<"$sha256 $tarball"
    rm -rf /srv/zulip-node
    mkdir -p /srv/zulip-node
    tar -xJf "$tarball" --no-same-owner --strip-components=1 -C /srv/zulip-node
    ln -sf /srv/zulip-node/bin/{node,npm,npx} /usr/local/bin
    rm -rf /usr/local/nvm
    check_version
fi