/**
 * Desk Lamp — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 684 · Size (W × H × D): 0.19 × 0.43 × 0.45 m
 *
 * Usage:
 *   import { createDeskLamp } from './desk-lamp.js';
 *   
 *   const model = createDeskLamp();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

const deg = THREE.MathUtils.degToRad;

// Revolve a 2D profile [[radius, y], ...] around the Y axis.
function lathe(points, segments, phiStart = 0, phiLength = Math.PI * 2) {
  return new THREE.LatheGeometry(points.map(([x, y]) => new THREE.Vector2(x, y)), segments, phiStart, phiLength);
}

export function createDeskLamp() {
  const root = new THREE.Group();
  root.name = 'DeskLamp';

  // Materials
  const paintMat = new THREE.MeshStandardMaterial({ name: 'paint', color: 0xc8463a, roughness: 0.4, metalness: 0.2, flatShading: true });
  const chromeMat = new THREE.MeshStandardMaterial({ name: 'chrome', color: 0xc9ced4, roughness: 0.25, metalness: 0.8, flatShading: true });
  const springMat = new THREE.MeshStandardMaterial({ name: 'spring', color: 0x7d8188, roughness: 0.4, metalness: 0.7, flatShading: true });
  const reflectorMat = new THREE.MeshStandardMaterial({ name: 'reflector', color: 0xf2ede2, roughness: 0.6, flatShading: true });
  const bulbMat = new THREE.MeshStandardMaterial({ name: 'bulb', color: 0xfff4cf, roughness: 0.3, emissive: 0xffe08a, emissiveIntensity: 1.3, flatShading: true });
  const rubberMat = new THREE.MeshStandardMaterial({ name: 'rubber', color: 0x26262a, roughness: 0.8, flatShading: true });

  // Shared geometries
  const cylinderGeo = new THREE.CylinderGeometry(0.0065, 0.0065, 0.3, 6);
  const cylinderGeo2 = new THREE.CylinderGeometry(0.006, 0.006, 0.29, 6);
  const cylinderGeo3 = new THREE.CylinderGeometry(0.009, 0.009, 0.162, 6);

  // Parts
  const deskLamp = new THREE.Group();
  deskLamp.name = 'deskLamp';
  deskLamp.position.set(0, 0, -0.0181);
  root.add(deskLamp);
  const base = new THREE.Mesh(new THREE.CylinderGeometry(0.085, 0.095, 0.03, 12), paintMat);
  base.name = 'base';
  base.position.set(0, 0.015, 0);
  deskLamp.add(base);
  const baseFoot = new THREE.Mesh(new THREE.CylinderGeometry(0.096, 0.096, 0.006, 12), rubberMat);
  baseFoot.name = 'baseFoot';
  baseFoot.position.set(0, 0.003, 0);
  deskLamp.add(baseFoot);
  const baseTrim = new THREE.Mesh(new THREE.CylinderGeometry(0.06, 0.08, 0.012, 12), chromeMat);
  baseTrim.name = 'baseTrim';
  baseTrim.position.set(0, 0.036, 0);
  deskLamp.add(baseTrim);
  const switch2 = new THREE.Mesh(new THREE.BoxGeometry(0.024, 0.012, 0.016), rubberMat);
  switch2.name = 'switch';
  switch2.position.set(0.045, 0.036, 0.05);
  deskLamp.add(switch2);
  const turret = new THREE.Mesh(new THREE.CylinderGeometry(0.02, 0.026, 0.05, 8), paintMat);
  turret.name = 'turret';
  turret.position.set(0, 0.065, -0.01);
  deskLamp.add(turret);
  const baseHinge = new THREE.Mesh(new THREE.CylinderGeometry(0.016, 0.016, 0.05, 8), chromeMat);
  baseHinge.name = 'baseHinge';
  baseHinge.position.set(0, 0.09, -0.01);
  baseHinge.rotation.set(0, 0, deg(90));
  deskLamp.add(baseHinge);
  const elbowHinge = new THREE.Mesh(new THREE.CylinderGeometry(0.015, 0.015, 0.05, 8), chromeMat);
  elbowHinge.name = 'elbowHinge';
  elbowHinge.position.set(0, 0.3549, -0.1508);
  elbowHinge.rotation.set(0, 0, deg(90));
  deskLamp.add(elbowHinge);
  const headHinge = new THREE.Mesh(new THREE.CylinderGeometry(0.013, 0.013, 0.044, 8), chromeMat);
  headHinge.name = 'headHinge';
  headHinge.position.set(0, 0.4052, 0.1348);
  headHinge.rotation.set(0, 0, deg(90));
  deskLamp.add(headHinge);
  const lowerRod = new THREE.Mesh(cylinderGeo, paintMat);
  lowerRod.name = 'lowerRod';
  lowerRod.position.set(0.014, 0.2224, -0.0804);
  lowerRod.rotation.set(deg(-28), 0, 0);
  deskLamp.add(lowerRod);
  const upperRod = new THREE.Mesh(cylinderGeo2, paintMat);
  upperRod.name = 'upperRod';
  upperRod.position.set(0.014, 0.3801, -0.008);
  upperRod.rotation.set(deg(80), 0, 0);
  deskLamp.add(upperRod);
  const lowerRod2 = new THREE.Mesh(cylinderGeo, paintMat);
  lowerRod2.name = 'lowerRod';
  lowerRod2.position.set(-0.014, 0.2224, -0.0804);
  lowerRod2.rotation.set(deg(-28), 0, 0);
  deskLamp.add(lowerRod2);
  const upperRod2 = new THREE.Mesh(cylinderGeo2, paintMat);
  upperRod2.name = 'upperRod';
  upperRod2.position.set(-0.014, 0.3801, -0.008);
  upperRod2.rotation.set(deg(80), 0, 0);
  deskLamp.add(upperRod2);
  const spring = new THREE.Mesh(cylinderGeo3, springMat);
  spring.name = 'spring';
  spring.position.set(0.031, 0.1827, -0.0593);
  spring.rotation.set(deg(-28), 0, 0);
  deskLamp.add(spring);
  const spring2 = new THREE.Mesh(cylinderGeo3, springMat);
  spring2.name = 'spring';
  spring2.position.set(-0.031, 0.1827, -0.0593);
  spring2.rotation.set(deg(-28), 0, 0);
  deskLamp.add(spring2);
  const shade = new THREE.Group();
  shade.name = 'shade';
  shade.position.set(0, 0.3438, 0.1778);
  shade.rotation.set(deg(-35), 0, 0);
  deskLamp.add(shade);
  const shadeOuter = new THREE.Mesh(lathe([[0.083, -0.064], [0.09, -0.06], [0.028, 0.058], [0, 0.066]], 12), paintMat);
  shadeOuter.name = 'shadeOuter';
  shade.add(shadeOuter);
  const shadeInner = new THREE.Mesh(lathe([[0, 0.05], [0.022, 0.048], [0.083, -0.062]], 12), reflectorMat);
  shadeInner.name = 'shadeInner';
  shade.add(shadeInner);
  const socket = new THREE.Mesh(new THREE.CylinderGeometry(0.012, 0.016, 0.02, 8), chromeMat);
  socket.name = 'socket';
  socket.position.set(0, 0.035, 0);
  shade.add(socket);
  const bulb = new THREE.Mesh(new THREE.SphereGeometry(0.028, 8, 6), bulbMat);
  bulb.name = 'bulb';
  bulb.position.set(0, -0.005, 0);
  bulb.scale.set(1, 1.15, 1);
  shade.add(bulb);
  const knuckle = new THREE.Mesh(new THREE.CylinderGeometry(0.014, 0.014, 0.03, 6), paintMat);
  knuckle.name = 'knuckle';
  knuckle.position.set(0, 0.075, 0);
  shade.add(knuckle);

  root.traverse((o) => {
    if (o.isMesh) {
      o.castShadow = true;
      o.receiveShadow = true;
    }
  });
  return root;
}

export default createDeskLamp;