// Record an app's WebSocket exchange under real Node for tests/goldens/ws
// (scripts/golden.mjs drives it). The app runs as scripts/app-under-node.mjs starts it;
// the exchange is the `exchange` export of the app's public/client.js (the same file the
// app's page runs), driven by Node's global WebSocket against ws://localhost:<port>/live.
import { join, resolve } from "node:path";
import { pathToFileURL } from "node:url";
import { startApp } from "./app-under-node.mjs";

/** `root` is the package root that `app` is relative to. Resolves with the log lines. */
export async function recordWs(root, { app, port }, node) {
  const dir = resolve(root, app);
  const { exchange } = await import(pathToFileURL(join(dir, "public/client.js")).href);
  const running = await startApp(dir, port, node);
  try {
    return await exchange(WebSocket, `ws://localhost:${port}/live`);
  } finally {
    await running.stop();
  }
}