/**
 * Knight Helmet — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 1,440 · Size (W × H × D): 0.25 × 0.56 × 0.31 m
 *
 * Usage:
 *   import { createKnightHelmet } from './knight-helmet.js';
 *   
 *   const model = createKnightHelmet();
 *   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 createKnightHelmet() {
  const root = new THREE.Group();
  root.name = 'KnightHelmet';

  // Materials
  const metalMat = new THREE.MeshStandardMaterial({ name: 'metal', color: 0xb4bdc7, roughness: 0.35, metalness: 0.75, flatShading: true });
  const trimMat = new THREE.MeshStandardMaterial({ name: 'trim', color: 0xd3a64a, roughness: 0.35, metalness: 0.75, flatShading: true });
  const darkMat = new THREE.MeshStandardMaterial({ name: 'dark', color: 0x16181d, roughness: 0.9, flatShading: true });
  const plumeMat = new THREE.MeshStandardMaterial({ name: 'plume', color: 0xc9343c, roughness: 0.9 });
  const plume2Mat = new THREE.MeshStandardMaterial({ name: 'plume2', color: 0xf1ece2, roughness: 0.9 });

  // Shared geometries
  const boxGeo = new THREE.BoxGeometry(0.0464, 0.024, 0.006);
  const boxGeo2 = new THREE.BoxGeometry(0.007, 0.007, 0.004);
  const sphereGeo = new THREE.SphereGeometry(0.006, 5, 3);
  const sphereGeo2 = new THREE.SphereGeometry(1, 7, 5);

  // Parts
  const helmet = new THREE.Group();
  helmet.name = 'helmet';
  root.add(helmet);
  const shell = new THREE.Mesh(lathe([[0.109, 0], [0.116, 0], [0.12, 0.05], [0.122, 0.13], [0.121, 0.2], [0.115, 0.245], [0.098, 0.275], [0.07, 0.295], [0.035, 0.305], [0, 0.308], [0, 0.3], [0.065, 0.287], [0.1, 0.258], [0.113, 0.2], [0.109, 0]], 16), metalMat);
  shell.name = 'shell';
  helmet.add(shell);
  const browBand = new THREE.Mesh(lathe([[0.1172, 0.184], [0.1262, 0.184], [0.1255, 0.204], [0.1165, 0.204], [0.1172, 0.184]], 16), metalMat);
  browBand.name = 'browBand';
  helmet.add(browBand);
  const faceBand = new THREE.Mesh(lathe([[0.1179, 0.14], [0.1269, 0.14], [0.1266, 0.158], [0.1176, 0.158], [0.1179, 0.14]], 16), metalMat);
  faceBand.name = 'faceBand';
  helmet.add(faceBand);
  const rimBand = new THREE.Mesh(lathe([[0.1123, 0.004], [0.1213, 0.004], [0.1229, 0.024], [0.1139, 0.024], [0.1123, 0.004]], 16), metalMat);
  rimBand.name = 'rimBand';
  helmet.add(rimBand);
  const slitMount56 = new THREE.Group();
  slitMount56.name = 'slitMount-56';
  slitMount56.rotation.set(0, deg(-56.25), 0);
  helmet.add(slitMount56);
  const slit56 = new THREE.Mesh(boxGeo, darkMat);
  slit56.name = 'slit-56';
  slit56.position.set(0, 0.17, 0.1176);
  slitMount56.add(slit56);
  const slitMount34 = new THREE.Group();
  slitMount34.name = 'slitMount-34';
  slitMount34.rotation.set(0, deg(-33.75), 0);
  helmet.add(slitMount34);
  const slit34 = new THREE.Mesh(boxGeo, darkMat);
  slit34.name = 'slit-34';
  slit34.position.set(0, 0.17, 0.1176);
  slitMount34.add(slit34);
  const slitMount11 = new THREE.Group();
  slitMount11.name = 'slitMount-11';
  slitMount11.rotation.set(0, deg(-11.25), 0);
  helmet.add(slitMount11);
  const slit11 = new THREE.Mesh(boxGeo, darkMat);
  slit11.name = 'slit-11';
  slit11.position.set(0, 0.17, 0.1176);
  slitMount11.add(slit11);
  const slitMount112 = new THREE.Group();
  slitMount112.name = 'slitMount11';
  slitMount112.rotation.set(0, deg(11.25), 0);
  helmet.add(slitMount112);
  const slit112 = new THREE.Mesh(boxGeo, darkMat);
  slit112.name = 'slit11';
  slit112.position.set(0, 0.17, 0.1176);
  slitMount112.add(slit112);
  const slitMount342 = new THREE.Group();
  slitMount342.name = 'slitMount34';
  slitMount342.rotation.set(0, deg(33.75), 0);
  helmet.add(slitMount342);
  const slit342 = new THREE.Mesh(boxGeo, darkMat);
  slit342.name = 'slit34';
  slit342.position.set(0, 0.17, 0.1176);
  slitMount342.add(slit342);
  const slitMount562 = new THREE.Group();
  slitMount562.name = 'slitMount56';
  slitMount562.rotation.set(0, deg(56.25), 0);
  helmet.add(slitMount562);
  const slit562 = new THREE.Mesh(boxGeo, darkMat);
  slit562.name = 'slit56';
  slit562.position.set(0, 0.17, 0.1176);
  slitMount562.add(slit562);
  const noseStrip = new THREE.Mesh(new THREE.BoxGeometry(0.032, 0.17, 0.012), metalMat);
  noseStrip.name = 'noseStrip';
  noseStrip.position.set(0, 0.115, 0.12);
  helmet.add(noseStrip);
  const stripCap = new THREE.Mesh(new THREE.BoxGeometry(0.032, 0.03, 0.012), trimMat);
  stripCap.name = 'stripCap';
  stripCap.position.set(0, 0.215, 0.119);
  helmet.add(stripCap);
  const holes34 = new THREE.Group();
  holes34.name = 'holes34';
  holes34.rotation.set(0, deg(33.75), 0);
  helmet.add(holes34);
  const hole341 = new THREE.Mesh(boxGeo2, darkMat);
  hole341.name = 'hole34_1';
  hole341.position.set(0, 0.085, 0.1191);
  holes34.add(hole341);
  const hole342 = new THREE.Mesh(boxGeo2, darkMat);
  hole342.name = 'hole34_2';
  hole342.position.set(-0.012, 0.085, 0.1191);
  holes34.add(hole342);
  const hole343 = new THREE.Mesh(boxGeo2, darkMat);
  hole343.name = 'hole34_3';
  hole343.position.set(0.012, 0.085, 0.1191);
  holes34.add(hole343);
  const hole344 = new THREE.Mesh(boxGeo2, darkMat);
  hole344.name = 'hole34_4';
  hole344.position.set(0, 0.065, 0.1191);
  holes34.add(hole344);
  const hole345 = new THREE.Mesh(boxGeo2, darkMat);
  hole345.name = 'hole34_5';
  hole345.position.set(0, 0.105, 0.1191);
  holes34.add(hole345);
  const holes56 = new THREE.Group();
  holes56.name = 'holes56';
  holes56.rotation.set(0, deg(56.25), 0);
  helmet.add(holes56);
  const hole561 = new THREE.Mesh(boxGeo2, darkMat);
  hole561.name = 'hole56_1';
  hole561.position.set(0, 0.085, 0.1191);
  holes56.add(hole561);
  const hole562 = new THREE.Mesh(boxGeo2, darkMat);
  hole562.name = 'hole56_2';
  hole562.position.set(-0.012, 0.085, 0.1191);
  holes56.add(hole562);
  const hole563 = new THREE.Mesh(boxGeo2, darkMat);
  hole563.name = 'hole56_3';
  hole563.position.set(0.012, 0.085, 0.1191);
  holes56.add(hole563);
  const hole564 = new THREE.Mesh(boxGeo2, darkMat);
  hole564.name = 'hole56_4';
  hole564.position.set(0, 0.065, 0.1191);
  holes56.add(hole564);
  const hole565 = new THREE.Mesh(boxGeo2, darkMat);
  hole565.name = 'hole56_5';
  hole565.position.set(0, 0.105, 0.1191);
  holes56.add(hole565);
  const rivetMount6 = new THREE.Group();
  rivetMount6.name = 'rivetMount-6';
  rivetMount6.rotation.set(0, deg(-67.5), 0);
  helmet.add(rivetMount6);
  const rivet6 = new THREE.Mesh(sphereGeo, trimMat);
  rivet6.name = 'rivet-6';
  rivet6.position.set(0, 0.194, 0.1237);
  rivetMount6.add(rivet6);
  const rivetMount2 = new THREE.Group();
  rivetMount2.name = 'rivetMount-2';
  rivetMount2.rotation.set(0, deg(-22.5), 0);
  helmet.add(rivetMount2);
  const rivet2 = new THREE.Mesh(sphereGeo, trimMat);
  rivet2.name = 'rivet-2';
  rivet2.position.set(0, 0.194, 0.1237);
  rivetMount2.add(rivet2);
  const rivetMount22 = new THREE.Group();
  rivetMount22.name = 'rivetMount2';
  rivetMount22.rotation.set(0, deg(22.5), 0);
  helmet.add(rivetMount22);
  const rivet22 = new THREE.Mesh(sphereGeo, trimMat);
  rivet22.name = 'rivet2';
  rivet22.position.set(0, 0.194, 0.1237);
  rivetMount22.add(rivet22);
  const rivetMount62 = new THREE.Group();
  rivetMount62.name = 'rivetMount6';
  rivetMount62.rotation.set(0, deg(67.5), 0);
  helmet.add(rivetMount62);
  const rivet62 = new THREE.Mesh(sphereGeo, trimMat);
  rivet62.name = 'rivet6';
  rivet62.position.set(0, 0.194, 0.1237);
  rivetMount62.add(rivet62);
  const plumeHolder = new THREE.Mesh(new THREE.CylinderGeometry(0.016, 0.022, 0.035, 8), trimMat);
  plumeHolder.name = 'plumeHolder';
  plumeHolder.position.set(0, 0.3135, 0);
  helmet.add(plumeHolder);
  const feather1 = new THREE.Group();
  feather1.name = 'feather1';
  feather1.position.set(0, 0.326, 0);
  feather1.rotation.set(deg(12), 0, deg(-4));
  helmet.add(feather1);
  const featherBlade1 = new THREE.Mesh(sphereGeo2, plumeMat);
  featherBlade1.name = 'featherBlade1';
  featherBlade1.position.set(0, 0.1, 0);
  featherBlade1.scale.set(0.026, 0.1, 0.042);
  feather1.add(featherBlade1);
  const feather2 = new THREE.Group();
  feather2.name = 'feather2';
  feather2.position.set(0, 0.326, 0);
  feather2.rotation.set(deg(-10), 0, deg(4));
  helmet.add(feather2);
  const featherBlade2 = new THREE.Mesh(sphereGeo2, plume2Mat);
  featherBlade2.name = 'featherBlade2';
  featherBlade2.position.set(0, 0.12, 0);
  featherBlade2.scale.set(0.026, 0.12, 0.042);
  feather2.add(featherBlade2);
  const feather3 = new THREE.Group();
  feather3.name = 'feather3';
  feather3.position.set(0, 0.326, 0);
  feather3.rotation.set(deg(-32), 0, deg(-4));
  helmet.add(feather3);
  const featherBlade3 = new THREE.Mesh(sphereGeo2, plumeMat);
  featherBlade3.name = 'featherBlade3';
  featherBlade3.position.set(0, 0.125, 0);
  featherBlade3.scale.set(0.026, 0.125, 0.042);
  feather3.add(featherBlade3);
  const feather4 = new THREE.Group();
  feather4.name = 'feather4';
  feather4.position.set(0, 0.326, 0);
  feather4.rotation.set(deg(-55), 0, deg(4));
  helmet.add(feather4);
  const featherBlade4 = new THREE.Mesh(sphereGeo2, plume2Mat);
  featherBlade4.name = 'featherBlade4';
  featherBlade4.position.set(0, 0.11, 0);
  featherBlade4.scale.set(0.026, 0.11, 0.042);
  feather4.add(featherBlade4);
  const feather5 = new THREE.Group();
  feather5.name = 'feather5';
  feather5.position.set(0, 0.326, 0);
  feather5.rotation.set(deg(-78), 0, deg(-4));
  helmet.add(feather5);
  const featherBlade5 = new THREE.Mesh(sphereGeo2, plumeMat);
  featherBlade5.name = 'featherBlade5';
  featherBlade5.position.set(0, 0.09, 0);
  featherBlade5.scale.set(0.026, 0.09, 0.042);
  feather5.add(featherBlade5);

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

export default createKnightHelmet;