import { performance } from "node:perf_hooks";
import { fileURLToPath } from "node:url";
import { dirname, resolve } from "node:path";
import { NodeIO } from "@gltf-transform/core";
import RAPIER from "@dimforge/rapier3d-compat";

const here = dirname(fileURLToPath(import.meta.url));
const collisionPath = resolve(
  here,
  "../src/assets/game/dungeons/wailing-caverns/wailing-caverns-collision.glb",
);

const readStarted = performance.now();
const document = await new NodeIO().read(collisionPath);
const primitive = document.getRoot().listMeshes()[0]?.listPrimitives()[0];
if (!primitive) throw new Error("Collision GLB has no mesh primitive.");

const positions = primitive.getAttribute("POSITION")?.getArray();
const indices = primitive.getIndices()?.getArray();
if (!positions || !indices) throw new Error("Collision GLB lacks indexed positions.");
const readFinished = performance.now();

const initStarted = performance.now();
await RAPIER.init();
const initFinished = performance.now();

const buildStarted = performance.now();
const world = new RAPIER.World({ x: 0, y: -18, z: 0 });
const body = world.createRigidBody(RAPIER.RigidBodyDesc.fixed());
world.createCollider(RAPIER.ColliderDesc.trimesh(positions, indices), body);
const buildFinished = performance.now();

console.log(JSON.stringify({
  vertices: positions.length / 3,
  triangles: indices.length / 3,
  glbReadMs: Math.round(readFinished - readStarted),
  rapierInitMs: Math.round(initFinished - initStarted),
  trimeshBuildMs: Math.round(buildFinished - buildStarted),
}, null, 2));