#!/usr/bin/env node
/**
 * v1.4.43 QoL (L3) — write the active package.json version into
 * `public/sw-version.js`. The Service Worker (`public/sw.js`) loads
 * this file via `importScripts('/sw-version.js')` and reads
 * `self.__APP_VERSION__` to key its `CACHE_VERSION`.
 *
 * Pre-fix the SW carried a hand-bumped literal that drifted four
 * releases stale; the `activate`-step's old-cache eviction became
 * a no-op for every deploy in v1.4.38.4 → v1.4.42. Running this
 * script as a `prebuild` step re-anchors the version on every build,
 * so the eviction now fires reliably.
 *
 * Idempotent: writes the file unconditionally. Safe to commit the
 * generated file or `.gitignore` it — either way `pnpm build` reruns
 * the generator.
 */
import { readFileSync, writeFileSync } from "node:fs";
import { join, dirname } from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = dirname(fileURLToPath(import.meta.url));
const repoRoot = join(__dirname, "..");
const pkgPath = join(repoRoot, "package.json");
const outPath = join(repoRoot, "public", "sw-version.js");

const pkg = JSON.parse(readFileSync(pkgPath, "utf8"));
const version = `v${pkg.version}`;

const banner =
  "// AUTO-GENERATED by scripts/generate-sw-version.mjs — do not edit.\n";
const body = `self.__APP_VERSION__ = ${JSON.stringify(version)};\n`;

writeFileSync(outPath, banner + body, "utf8");

// One-line log so the build output shows the version we baked in.
process.stdout.write(`sw-version.js → ${version}\n`);