/**
 * Clay Pot — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 840 · Size (W × H × D): 0.43 × 0.78 × 0.43 m
 *
 * Usage:
 *   import { createClayPot } from './clay-pot.js';
 *   
 *   const model = createClayPot();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

// 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);
}

// Tube along a smooth curve through the given points.
function tube(path, radius, tubularSegments, radialSegments, closed = false) {
  const curve = new THREE.CatmullRomCurve3(path.map(([x, y, z]) => new THREE.Vector3(x, y, z)), closed);
  return new THREE.TubeGeometry(curve, tubularSegments, radius, radialSegments, closed);
}

export function createClayPot() {
  const root = new THREE.Group();
  root.name = 'ClayPot';

  // Materials
  const clayMat = new THREE.MeshStandardMaterial({ name: 'clay', color: 0xc0643a, roughness: 0.85, flatShading: true });
  const innerMat = new THREE.MeshStandardMaterial({ name: 'inner', color: 0x492616, roughness: 1, flatShading: true });
  const paintMat = new THREE.MeshStandardMaterial({ name: 'paint', color: 0x2e2220, roughness: 0.7, flatShading: true });

  // Parts
  const body = new THREE.Mesh(lathe([[0, 0.004], [0.075, 0], [0.078, 0.025], [0.05, 0.05], [0.07, 0.1], [0.15, 0.2], [0.2, 0.32], [0.215, 0.42], [0.2, 0.51], [0.14, 0.59], [0.08, 0.63], [0.068, 0.7], [0.075, 0.74], [0.098, 0.765], [0.09, 0.777], [0.078, 0.769]], 12), clayMat);
  body.name = 'body';
  root.add(body);
  const interior = new THREE.Mesh(lathe([[0.078, 0.769], [0.052, 0.725], [0.048, 0.645], [0, 0.645]], 12), innerMat);
  interior.name = 'interior';
  root.add(interior);
  const band1 = new THREE.Mesh(lathe([[0.1897, 0.3], [0.1957, 0.3], [0.204, 0.32], [0.2048, 0.325], [0.1988, 0.325]], 12), paintMat);
  band1.name = 'band1';
  root.add(band1);
  const band2 = new THREE.Mesh(lathe([[0.2047, 0.47], [0.2107, 0.47], [0.2057, 0.5], [0.1997, 0.5]], 12), paintMat);
  band2.name = 'band2';
  root.add(band2);
  const handleL = new THREE.Mesh(tube([[-0.07, 0.705, 0], [-0.15, 0.715, 0], [-0.19, 0.66, 0], [-0.185, 0.56, 0], [-0.165, 0.54, 0]], 0.017, 12, 5), clayMat);
  handleL.name = 'handleL';
  root.add(handleL);
  const handleR = new THREE.Mesh(tube([[0.07, 0.705, 0], [0.15, 0.715, 0], [0.19, 0.66, 0], [0.185, 0.56, 0], [0.165, 0.54, 0]], 0.017, 12, 5), clayMat);
  handleR.name = 'handleR';
  root.add(handleR);

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

export default createClayPot;