NWC, L402, OpenAI example

nwc-openai.mjs

import { fetchWithL402 } from "alby-tools";
import { webln } from "alby-js-sdk";
import 'websocket-polyfill';
import * as crypto from 'crypto'; // or 'node:crypto'
globalThis.crypto = crypto;

const nwcURL = process.env.NWC_URL;

async function main() {
  const nwc = new webln.NWC({ nostrWalletConnectUrl: nwcURL });
  nwc.on("sendPayment", console.log);

  const payload = {
    "prompt": "make me a sandwitch",
    "n": 1,
    "size": "1024x1024"
  };
  const res = await fetchWithL402(
    "https://matador-ai.replit.app/v1/images/generations",
    {
      method: "POST",
      body: JSON.stringify(payload),
      mode: "cors",
      headers: { "Content-Type": "application/json", "Accept": "application/json" }
    }, {
    header_key: "L402",
    webln: nwc
  }
  );
  console.log(res);
  const data = await res.json();
  console.log(data);
  nwc.close();
}

main();