import { decodeBolt11Invoice, mintMacaroon } from "@boltwall/l402";

function hexToBytes(hex: string): Uint8Array {
  const bytes = new Uint8Array(hex.length / 2);
  for (let i = 0; i < bytes.length; i++) {
    bytes[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);
  }
  return bytes;
}

const rootKey = hexToBytes("<64-char hex key>");
const invoice = "";
const paymentHash = invoice
  ? decodeBolt11Invoice(invoice).paymentHash
  : crypto.getRandomValues(new Uint8Array(32));

const identifier = {
  version: 0 as const,
  paymentHash,
  tokenId: crypto.getRandomValues(new Uint8Array(32)),
};
const macaroon = mintMacaroon({ rootKey, identifier });