// The Node version goldens and surface manifests are recorded against: the repo's
// .node-version. Recording under any other Node silently re-targets the specs.
import { readFileSync } from "node:fs";

export const PINNED = readFileSync(new URL("../../../.node-version", import.meta.url), "utf8").trim();
// Volta pins the same version for `node` in the repo; the two must not drift.
const volta = JSON.parse(readFileSync(new URL("../../../package.json", import.meta.url), "utf8")).volta?.node;
if (volta !== PINNED) throw new Error(`.node-version says ${PINNED}, package.json volta.node says ${volta}`);
// process.version's source; tests import it unbundled, so it stays a literal that
// bump-node.mjs moves.
const { NODE_VERSION } = await import("../src/shared/platform.ts");
if (NODE_VERSION !== PINNED) throw new Error(`.node-version says ${PINNED}, src/shared/platform.ts NODE_VERSION says ${NODE_VERSION}`);
// The published Node target (the kernel's own version is semver).
const nibling = JSON.parse(readFileSync(new URL("../package.json", import.meta.url), "utf8")).nibling?.node;
if (nibling !== PINNED) throw new Error(`.node-version says ${PINNED}, package.json nibling.node says ${nibling}`);

export function assertPinnedNode() {
  if (process.version !== `v${PINNED}`) {
    console.error(`golden recordings need node v${PINNED} (.node-version); this is ${process.version}`);
    process.exit(1);
  }
}

// The environment the oracle runs under: this shell's, minus what changes Node's output
// without changing the program. FORCE_COLOR from a terminal paints util.inspect and
// styleText through a pipe; NODE_OPTIONS can enable experimental builtins.
const LEAKY = ["FORCE_COLOR", "NO_COLOR", "NODE_DISABLE_COLORS", "COLORTERM", "NODE_OPTIONS"];

export function oracleEnv(extra = {}) {
  const env = { ...process.env, ...extra };
  for (const k of LEAKY) delete env[k];
  return env;
}