#!/usr/bin/env node
// Bumps public/sw.js's CACHE_VERSION so a deploy invalidates old caches —
// run this before cutting a release that changes the app shell or updates
// the vendored vpinball-wasm engine build.
import { readFile, writeFile } from "node:fs/promises";
import path from "node:path";
import { fileURLToPath } from "node:url";

const rootDir = path.dirname(path.dirname(fileURLToPath(import.meta.url)));
const swPath = path.join(rootDir, "public", "sw.js");

const contents = await readFile(swPath, "utf8");
const match = contents.match(/CACHE_VERSION = "v(\d+)"/);
if (!match) {
  console.error(`Couldn't find CACHE_VERSION in ${swPath}`);
  process.exit(1);
}
const next = Number(match[1]) + 1;
const updated = contents.replace(/CACHE_VERSION = "v\d+"/, `CACHE_VERSION = "v${next}"`);
await writeFile(swPath, updated);
console.log(`Bumped service worker CACHE_VERSION to v${next}`);