import assert from "node:assert/strict";
import { readFile } from "node:fs/promises";
import createModule from "../../build-wasm/linuxcnc-sim-core.js";
import { loadSimulationCase, toWorkerConfiguration } from "../workspace/sim-case-loader.mjs";
import { CONTEXT_ID, SimSession } from "./sim-session.mjs";
import { fnv1a64 } from "./replay.mjs";

const CASE = "linuxcnc/configs/sim/axis/vismach/5axis/table-rotary-tilting/xyzac-trt.ini";
const fetchImpl = async (url) => {
  try {
    const body = await readFile(new URL(`../../${String(url).replace(/^\//, "")}`, import.meta.url));
    return { ok: true, text: async () => body.toString("utf8") };
  } catch {
    return { ok: false, text: async () => "" };
  }
};

const bundle = await loadSimulationCase({ path: CASE, fetchImpl });
assert.equal(bundle.status, "ready");
const sourcePath = "linuxcnc/src/hal/user_comps/vismach/xyzac-trt-gui.py";
const sourceHash = fnv1a64(bundle.files[sourcePath]);
const core = await createModule({ wasmBinary: await readFile(new URL("../../build-wasm/linuxcnc-sim-core.wasm", import.meta.url)) });
const session = new SimSession(core, { sessionId: "xyzac-visual-data-bridge" });
const base = { schema_version: 1, context_id: CONTEXT_ID, session_id: session.sessionId };
let seq = 0;
const send = (kind, payload = {}) => session.accept({ ...base, kind, seq: ++seq, operation_id: `${kind.toLowerCase()}-${seq}`, payload });
send("HELLO");
send("SESSION_ATTACH");
const loaded = send("LOAD_WORKSPACE", { root_path: "/workspace", configuration: toWorkerConfiguration(bundle) });
assert.equal(loaded.payload.status, "verified");
const panel = loaded.payload.panel_snapshot;
assert.equal(panel.visual.source, "wasm_canonical_motion");
assert.equal(panel.visual.machine_model.schema, "linuxcnc-vismach-model.v1");
assert.equal(panel.visual.machine_model.source, "linuxcnc-wasm-worker");
assert.equal(panel.visual.machine_model.source_path, sourcePath);
assert.equal(panel.visual.machine_model.source_hash, sourceHash);
assert.deepEqual(panel.visual.machine_model.joints, ["table-x", "saddle-y", "spindle-z", "tilt-a", "rotate-c"]);
assert.equal(panel.visual.machine_model.coordinate_system, "XYZAC");
assert.ok(panel.visual.toolpath === undefined || Array.isArray(panel.visual.toolpath), "toolpath is optional on compact startup snapshots");

const loadedProgram = send("PROGRAM_LOAD", {
  source: "G21\nG90\nG1 X1 Y2 Z3 A4 C5 F100\nM2\n",
  path: "bridge.ngc",
});
const visual = loadedProgram.payload.panel_snapshot.visual;
assert.equal(visual.machine_model.source_hash, sourceHash);
assert.ok(Array.isArray(visual.toolpath) && visual.toolpath.length > 0);
assert.equal(visual.source, "wasm_canonical_motion");
assert.match(loadedProgram.payload.panel_snapshot.state_hash, /^fnv1a64:/);

console.log(JSON.stringify({
  schema: "xyzac-visual-data-bridge.v1",
  status: "verified",
  source: sourcePath,
  source_hash: sourceHash,
  toolpath_segments: visual.toolpath.length,
  shared_snapshot_fields: ["visual.machine_model", "visual.toolpath", "visual.motion_trace", "visual.pose", "visual.joints"],
}));