import { readFile } from "node:fs/promises";
import { hash as blake3 } from "blake3-wasm";

// Native asset addressing for the distinct API fixture asset, calculated by the
// same public package as production packaging, outside the customer runtime.
export async function upgradeAssetHash() {
  const manifest = JSON.parse(
    await readFile("dist/release/manifest.json", "utf8"),
  );
  const file = manifest.files.find(
    (f) => f.path.startsWith("assets/") && f.path.endsWith(".js"),
  );
  const bytes = Buffer.concat([
    await readFile(`dist/release/${file.path}`),
    Buffer.from("\n// immutable upgrade asset TWO\n"),
  ]);
  return blake3(bytes.toString("base64") + "js")
    .toString("hex")
    .slice(0, 32);
}