import * as THREE from "three";
import { OrbitControls } from "three/examples/jsm/controls/OrbitControls.js";

const scene = new THREE.Scene();
scene.background = new THREE.Color("white");

const camera = new THREE.PerspectiveCamera(
  75,
  window.innerWidth / window.innerHeight,
  0.1,
  1000
);
camera.position.z = 5;

const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

const geometry = new THREE.TorusKnotGeometry(1.5, 0.5, 100, 16);

const materials = {
  black: new THREE.MeshStandardMaterial({
    color: "black",
    roughness: 1,
    metalness: 0,
  }),
  silver: new THREE.MeshStandardMaterial({
    color: "#C0C0C0",
    roughness: 0.3,
    metalness: 1,
  }),
  gold: new THREE.MeshStandardMaterial({
    color: "#FFD700",
    roughness: 0.4,
    metalness: 1,
  }),
};

const sphere = new THREE.Mesh(geometry, materials.black);
scene.add(sphere);

const ambientLight = new THREE.AmbientLight(0xffffff, 0.6);
scene.add(ambientLight);

const pointLight = new THREE.PointLight(0xffffff, 1);
pointLight.position.set(5, 5, 5);
scene.add(pointLight);

const controls = new OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;

const buttons = document.querySelectorAll("button");

buttons.forEach((btn) => {
  btn.addEventListener("click", () => {
    const variant = btn.getAttribute("data-variant");

    sphere.material = materials[variant];

    buttons.forEach((b) => b.classList.remove("active"));
    btn.classList.add("active");
  });
});

function animate() {
  requestAnimationFrame(animate);

  controls.update();

  sphere.rotation.y += 0.01;

  renderer.render(scene, camera);
}
animate();

window.addEventListener("resize", () => {
  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize(window.innerWidth, window.innerHeight);
});