#!/usr/bin/env bash
# Install Node.js <major> from NodeSource, then refuse a build whose version is
# below the newest security release for that line. NodeSource mirrors can lag
# a release, and without this check a stale mirror ships a vulnerable image
# that looks like a normal successful build.
#   usage: install-node.sh <major>
set -euo pipefail
major="${1:?usage: install-node.sh <major>}"
case "$major" in ''|*[!0-9]*) echo "bad Node major: $major" >&2; exit 64;; esac

# Minimum acceptable version per line. Raise these when Node.js publishes a
# security release. 18 and 20 are end of life and get no fixes upstream.
declare -A MIN=(
  [22]=22.23.4   # 2026-10-20 security release (CVE-2026-111497 Brotli, +9)
  [24]=24.22.1
  [26]=26.12.1
)

# NodeSource repo written by pkg-cache-repos.sh with the signing key committed
# in keys/pkg-cache/ (replaces `curl setup_N.x | bash`, an unverified remote
# script). With PKG_CACHE (CI, cache reachable) the repo goes through the
# internal cache with the origin as 2nd baseurl; the caller's RUN must end with
# `pkg-cache-repos.sh restore`. RPMs are GPG-checked either way.
/usr/local/sbin/pkg-cache-repos.sh nodesource "$major"
dnf install -y nodejs
# npm 12 dropped Node 18/20; on those lines keep the npm Node ships with
# (what the old per-version scripts did, silently, before this one failed hard).
npm install -g npm@latest || echo "WARNING: npm@latest does not support Node $major; keeping bundled npm $(npm --version)" >&2

have="$(node -p 'process.versions.node')"
case "$have" in "$major".*) ;; *) echo "ERROR: wanted Node $major, got $have" >&2; exit 1;; esac
if [ -n "${MIN[$major]:-}" ]; then
  if [ "$(printf '%s\n%s\n' "${MIN[$major]}" "$have" | sort -V | head -1)" != "${MIN[$major]}" ]; then
    echo "ERROR: Node $have is below the security floor ${MIN[$major]} for line $major (mirror behind?)" >&2
    exit 1
  fi
else
  echo "WARNING: Node $major is end of life; this image gets no Node.js security fixes." >&2
fi
echo "node $have, npm $(npm --version)"