// rpc_probe.mjs — manual probe: drive `pi --mode rpc` and observe the gate.
// Usage (from harness/, with .env loaded + VPN up):  node scripts/rpc_probe.mjs
import { spawn } from "node:child_process";

const pi = spawn("pi", ["--mode", "rpc"], { cwd: process.cwd(), env: process.env });

const send = (obj) => {
  const line = JSON.stringify(obj) + "\n";
  process.stdout.write(`>>> SEND ${line}`);
  pi.stdin.write(line);
};

let buf = "";
pi.stdout.on("data", (chunk) => {
  buf += chunk.toString("utf8");
  for (let nl; (nl = buf.indexOf("\n")) !== -1; ) {
    const line = buf.slice(0, nl);
    buf = buf.slice(nl + 1);
    if (!line.trim()) continue;
    process.stdout.write(`<<< RECV ${line}\n`);
    let msg;
    try { msg = JSON.parse(line); } catch { continue; }
    if (msg.type === "extension_ui_request") {
      // Reply in BOTH the gate's expected shape and Pi's native shape; observe which one unblocks.
      const id = msg.id ?? msg.ui_request?.id;
      send({ type: "extension_ui_response", id, control: "freetext", text: "PROBE-ANSWER" });
    }
  }
});
pi.stderr.on("data", (d) => process.stdout.write(`!!! STDERR ${d}`));
pi.on("exit", (code) => console.log(`### pi exited ${code}`));

// Kick off the workflow via an RPC prompt command (NOT interactive keystrokes).
setTimeout(() => send({ type: "prompt", message: '/nuova-domanda "quante cardioversioni nel 2024"' }), 500);
setTimeout(() => { pi.stdin.end(); }, 60000);