import assert from "node:assert/strict";
import test from "node:test";
import { parseJsonFrame, parseLinkMessage } from "../src/protocol.js";

test("protocol validation accepts valid hello", () => {
  const frame = parseJsonFrame(JSON.stringify({ type: "hello", computerId: 12, computerLabel: "base-turtle" }));
  assert.deepEqual(parseLinkMessage(frame), { type: "hello", computerId: 12, computerLabel: "base-turtle" });
});

test("protocol validation normalizes empty label", () => {
  const frame = parseJsonFrame(JSON.stringify({ type: "hello", computerId: 12, computerLabel: "" }));
  assert.deepEqual(parseLinkMessage(frame), { type: "hello", computerId: 12, computerLabel: null });
});

test("protocol validation rejects invalid frames", () => {
  assert.equal(parseJsonFrame("not json"), null);
  assert.equal(parseLinkMessage({ type: "hello", computerId: "12" }), null);
  assert.equal(parseLinkMessage({ type: "response", id: 1, ok: true }), null);
});