// Phase-1 drive client: pair with a ZeroClaw gateway, open /ws/chat as an
// agent, send one message, and print the streamed turn events. This is the
// Clawmates-side seam that (in prod) the control plane uses to run a claw's
// turn and journal its events. Node >=22 (global WebSocket + fetch).
//
//   node tools/runtime-spike/drive.mjs <base_url> <agent_alias> "<message>"
//   e.g. node tools/runtime-spike/drive.mjs http://100.108.129.81:42617 scout "Say hi in 5 words"

const [base, agent, message] = process.argv.slice(2);
if (!base || !agent || !message) {
  console.error('usage: drive.mjs <base_url> <agent_alias> "<message>"');
  process.exit(2);
}

// 1) Pair: read the one-time code from env (printed in the daemon's startup log).
const code = process.env.PAIR_CODE;
if (!code) {
  console.error("set PAIR_CODE=<code from daemon startup log>");
  process.exit(2);
}
const pairRes = await fetch(`${base}/pair`, {
  method: "POST",
  headers: { "X-Pairing-Code": code, "Content-Type": "application/json" },
  body: "{}",
});
if (!pairRes.ok) {
  console.error(`pair failed: ${pairRes.status} ${await pairRes.text()}`);
  process.exit(1);
}
const pair = await pairRes.json();
const token = pair.token ?? pair.bearer ?? pair.access_token;
console.log(`✓ paired, token acquired (${String(token).slice(0, 6)}…)`);

// 2) Open the agent chat socket and run one turn.
// Node's global WebSocket can't set headers, so pass the token as ?token=
// (gateway accepts header > subprotocol > query).
const wsUrl =
  base.replace(/^http/, "ws") +
  `/ws/chat?agent=${encodeURIComponent(agent)}&name=${encodeURIComponent("clawmates-spike")}` +
  `&token=${encodeURIComponent(token)}`;
const ws = new WebSocket(wsUrl);

const t0 = Date.now();
ws.addEventListener("open", () => {
  console.log("✓ ws open → sending message");
  ws.send(JSON.stringify({ type: "message", content: message }));
});
ws.addEventListener("message", (ev) => {
  let m;
  try { m = JSON.parse(ev.data); } catch { return console.log("raw:", ev.data); }
  switch (m.type) {
    case "session_start": console.log(`  session_start id=${m.session_id} resumed=${m.resumed}`); break;
    case "chunk": process.stdout.write(m.content ?? ""); break;
    case "tool_call": console.log(`\n  [tool_call] ${m.name} ${JSON.stringify(m.args)}`); break;
    case "tool_result": console.log(`  [tool_result] ${m.name}: ${String(m.output).slice(0, 120)}`); break;
    case "approval_request": console.log(`\n  [APPROVAL REQUIRED] ${JSON.stringify(m)}  ← §15 gate hook`); break;
    case "done":
      console.log(`\n✓ done in ${Date.now() - t0}ms`);
      ws.close(); process.exit(0);
    case "error": console.error("\n✗ error:", JSON.stringify(m)); ws.close(); process.exit(1);
    default: console.log("  evt:", JSON.stringify(m));
  }
});
ws.addEventListener("error", (e) => { console.error("ws error:", e.message ?? e); process.exit(1); });
setTimeout(() => { console.error("timeout (90s)"); process.exit(1); }, 90_000);