Function internalHandler

browse/src/terminal-agent.ts:406–429

* Wrap a JSON-bodied /internal/* handler with the standard bearer-auth + * generation-check + json-parse + error-response boilerplate. The handler * `fn` is called with the parsed body; whatever it returns is JSON-stringified * into a 200 Response, or the handler can return a Response directly to

(
  req: Request,
  fn: (body: any) => T | Promise<T> | Response | Promise<Response>,
)

 * New routes become a single call to internalHandler.
 */
async function internalHandler<T>(
  req: Request,
  fn: (body: any) => T | Promise<T> | Response | Promise<Response>,
): Promise<Response> {
  const denied = checkInternalAuth(req);
  if (denied) return denied;
  let body: any;
  try {
    body = await req.json();
  } catch {
    return new Response('bad', { status: 400 });
  }
  try {
    const result = await fn(body);
    if (result instanceof Response) return result;
    if (result === undefined || result === null) return new Response('ok');
    return new Response(JSON.stringify(result), {
      status: 200,
      headers: { 'Content-Type': 'application/json' },
    });
  } catch {
    return new Response('bad', { status: 400 });
  }
}

/**
 * Spawn the claude PTY for a session if it hasn't been spawned yet.