import { readdir, readFile, writeFile } from "node:fs/promises";
import { createHash } from "node:crypto";
const assets = [
  "/",
  "/manifest.webmanifest",
  "/icon.svg",
  "/icon-192.png",
  "/icon-512.png",
  ...(await readdir("dist/assets"))
    .filter((f) => /\.(js|css)$/.test(f))
    .map((f) => "/assets/" + f),
  ...(await readdir("dist/fonts"))
    .filter((f) => f === "RobotoFlex-Variable.ttf")
    .map((f) => "/fonts/" + f),
];
const rev = createHash("sha256")
  .update(assets.join("|"))
  .digest("hex")
  .slice(0, 12);
const template = await readFile("public/sw.js", "utf8");
await writeFile(
  "dist/sw.js",
  template
    .replace("__REVISION__", rev)
    .replace("/* build assets */ []", JSON.stringify(assets)),
);
console.log(`Офлайн-кэш: ${assets.length} ресурсов (${rev}).`);