Function handleFeedback

design/src/serve.ts:124–182

(req: Request)

  }, timeout * 1000);

  async function handleFeedback(req: Request): Promise<Response> {
    let body: any;
    try {
      body = await req.json();
    } catch {
      return Response.json({ error: "Invalid JSON" }, { status: 400 });
    }

    // Validate expected shape
    if (typeof body !== "object" || body === null) {
      return Response.json({ error: "Expected JSON object" }, { status: 400 });
    }

    const isSubmit = body.regenerated === false;
    const isRegenerate = body.regenerated === true;
    const action = isSubmit
      ? "submitted"
      : body.regenerateAction || "regenerate";

    console.error(`SERVE_FEEDBACK_RECEIVED: type=${action}`);

    // Print feedback JSON to stdout (for foreground mode)
    console.log(JSON.stringify(body));

    // ALWAYS write feedback to disk so the agent can poll for it
    // (agent typically backgrounds $D serve, can't read stdout)
    const feedbackDir = path.dirname(html);
    const feedbackFile = isSubmit ? "feedback.json" : "feedback-pending.json";
    const feedbackPath = path.join(feedbackDir, feedbackFile);
    fs.writeFileSync(feedbackPath, JSON.stringify(body, null, 2));

    if (isSubmit) {
      state = "done";
      if (timeoutTimer) clearTimeout(timeoutTimer);

      // Give the response time to send before exiting
      setTimeout(() => {
        server.stop();
        process.exit(0);
      }, 100);

      return Response.json({ received: true, action: "submitted" });
    }

    if (isRegenerate) {
      state = "regenerating";
      // Reset timeout for regeneration (agent needs time to generate new variants)
      if (timeoutTimer) clearTimeout(timeoutTimer);
      timeoutTimer = setTimeout(() => {
        console.error(`SERVE_TIMEOUT: after=${timeout}s (during regeneration)`);
        server.stop();
        process.exit(1);
      }, timeout * 1000);

      return Response.json({ received: true, action: "regenerate" });
    }

    return Response.json({ received: true, action: "unknown" });