/**
 * Bear — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 440 · Size (W × H × D): 0.56 × 1.09 × 1.37 m
 *
 * Usage:
 *   import { createBear } from './bear.js';
 *   
 *   const model = createBear();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

const deg = THREE.MathUtils.degToRad;

export function createBear() {
  const root = new THREE.Group();
  root.name = 'Bear';

  // Materials
  const furMat = new THREE.MeshStandardMaterial({ name: 'fur', color: 0x8a5a3a, roughness: 0.95, flatShading: true });
  const darkMat = new THREE.MeshStandardMaterial({ name: 'dark', color: 0x4f3324, roughness: 0.9, flatShading: true });
  const muzzleMat = new THREE.MeshStandardMaterial({ name: 'muzzle', color: 0xc99d70, roughness: 0.95, flatShading: true });
  const innerMat = new THREE.MeshStandardMaterial({ name: 'inner', color: 0xc99d70, roughness: 0.9, flatShading: true });
  const noseMat = new THREE.MeshStandardMaterial({ name: 'nose', color: 0x1b1719, roughness: 0.35, flatShading: true });
  const shineMat = new THREE.MeshStandardMaterial({ name: 'shine', color: 0xffffff, roughness: 0.3, flatShading: true });
  const clawMat = new THREE.MeshStandardMaterial({ name: 'claw', color: 0xefe6d2, roughness: 0.6, flatShading: true });

  // Shared geometries
  const boxGeo = new THREE.BoxGeometry(0.2, 0.3, 0.23);
  const boxGeo2 = new THREE.BoxGeometry(0.22, 0.09, 0.27);
  const boxGeo3 = new THREE.BoxGeometry(0.03, 0.03, 0.04);
  const boxGeo4 = new THREE.BoxGeometry(0.055, 0.065, 0.012);
  const boxGeo5 = new THREE.BoxGeometry(0.02, 0.02, 0.006);
  const cylinderGeo = new THREE.CylinderGeometry(0.08, 0.08, 0.06, 8);
  const cylinderGeo2 = new THREE.CylinderGeometry(0.048, 0.048, 0.02, 8);

  // Parts
  const bear = new THREE.Group();
  bear.name = 'bear';
  root.add(bear);
  const legFL = new THREE.Group();
  legFL.name = 'legFL';
  legFL.position.set(0.17, 0.38, 0.27);
  bear.add(legFL);
  const legFLLeg = new THREE.Mesh(boxGeo, furMat);
  legFLLeg.name = 'legFLLeg';
  legFLLeg.position.set(0, -0.15, 0);
  legFL.add(legFLLeg);
  const legFLPaw = new THREE.Mesh(boxGeo2, darkMat);
  legFLPaw.name = 'legFLPaw';
  legFLPaw.position.set(0, -0.335, 0.02);
  legFL.add(legFLPaw);
  const claw = new THREE.Mesh(boxGeo3, clawMat);
  claw.name = 'claw';
  claw.position.set(-0.06, -0.365, 0.165);
  legFL.add(claw);
  const claw2 = new THREE.Mesh(boxGeo3, clawMat);
  claw2.name = 'claw';
  claw2.position.set(0, -0.365, 0.165);
  legFL.add(claw2);
  const claw3 = new THREE.Mesh(boxGeo3, clawMat);
  claw3.name = 'claw';
  claw3.position.set(0.06, -0.365, 0.165);
  legFL.add(claw3);
  const legFR = new THREE.Group();
  legFR.name = 'legFR';
  legFR.position.set(-0.17, 0.38, 0.27);
  bear.add(legFR);
  const legFRLeg = new THREE.Mesh(boxGeo, furMat);
  legFRLeg.name = 'legFRLeg';
  legFRLeg.position.set(0, -0.15, 0);
  legFR.add(legFRLeg);
  const legFRPaw = new THREE.Mesh(boxGeo2, darkMat);
  legFRPaw.name = 'legFRPaw';
  legFRPaw.position.set(0, -0.335, 0.02);
  legFR.add(legFRPaw);
  const claw4 = new THREE.Mesh(boxGeo3, clawMat);
  claw4.name = 'claw';
  claw4.position.set(-0.06, -0.365, 0.165);
  legFR.add(claw4);
  const claw5 = new THREE.Mesh(boxGeo3, clawMat);
  claw5.name = 'claw';
  claw5.position.set(0, -0.365, 0.165);
  legFR.add(claw5);
  const claw6 = new THREE.Mesh(boxGeo3, clawMat);
  claw6.name = 'claw';
  claw6.position.set(0.06, -0.365, 0.165);
  legFR.add(claw6);
  const legBL = new THREE.Group();
  legBL.name = 'legBL';
  legBL.position.set(0.17, 0.38, -0.3);
  bear.add(legBL);
  const legBLLeg = new THREE.Mesh(boxGeo, furMat);
  legBLLeg.name = 'legBLLeg';
  legBLLeg.position.set(0, -0.15, 0);
  legBL.add(legBLLeg);
  const legBLPaw = new THREE.Mesh(boxGeo2, darkMat);
  legBLPaw.name = 'legBLPaw';
  legBLPaw.position.set(0, -0.335, 0.02);
  legBL.add(legBLPaw);
  const legBR = new THREE.Group();
  legBR.name = 'legBR';
  legBR.position.set(-0.17, 0.38, -0.3);
  bear.add(legBR);
  const legBRLeg = new THREE.Mesh(boxGeo, furMat);
  legBRLeg.name = 'legBRLeg';
  legBRLeg.position.set(0, -0.15, 0);
  legBR.add(legBRLeg);
  const legBRPaw = new THREE.Mesh(boxGeo2, darkMat);
  legBRPaw.name = 'legBRPaw';
  legBRPaw.position.set(0, -0.335, 0.02);
  legBR.add(legBRPaw);
  const body = new THREE.Group();
  body.name = 'body';
  bear.add(body);
  const torso = new THREE.Mesh(new THREE.BoxGeometry(0.56, 0.48, 0.88), furMat);
  torso.name = 'torso';
  torso.position.set(0, 0.56, 0);
  body.add(torso);
  const belly = new THREE.Mesh(new THREE.BoxGeometry(0.44, 0.012, 0.68), muzzleMat);
  belly.name = 'belly';
  belly.position.set(0, 0.314, 0);
  body.add(belly);
  const shoulderHump = new THREE.Mesh(new THREE.BoxGeometry(0.4, 0.09, 0.32), furMat);
  shoulderHump.name = 'shoulderHump';
  shoulderHump.position.set(0, 0.84, 0.18);
  body.add(shoulderHump);
  const tail = new THREE.Group();
  tail.name = 'tail';
  tail.position.set(0, 0.7, -0.44);
  bear.add(tail);
  const tailStub = new THREE.Mesh(new THREE.BoxGeometry(0.1, 0.09, 0.08), furMat);
  tailStub.name = 'tailStub';
  tailStub.position.set(0, 0, -0.03);
  tail.add(tailStub);
  const head = new THREE.Group();
  head.name = 'head';
  head.position.set(0, 0.68, 0.39);
  bear.add(head);
  const skull = new THREE.Mesh(new THREE.BoxGeometry(0.46, 0.4, 0.38), furMat);
  skull.name = 'skull';
  skull.position.set(0, 0.1, 0.14);
  head.add(skull);
  const muzzle = new THREE.Mesh(new THREE.BoxGeometry(0.22, 0.15, 0.13), muzzleMat);
  muzzle.name = 'muzzle';
  muzzle.position.set(0, -0.01, 0.39);
  head.add(muzzle);
  const nose = new THREE.Mesh(new THREE.BoxGeometry(0.1, 0.06, 0.04), noseMat);
  nose.name = 'nose';
  nose.position.set(0, 0.04, 0.45);
  head.add(nose);
  const mouthLine = new THREE.Mesh(new THREE.BoxGeometry(0.012, 0.05, 0.012), noseMat);
  mouthLine.name = 'mouthLine';
  mouthLine.position.set(0, -0.02, 0.457);
  head.add(mouthLine);
  const eyeL = new THREE.Mesh(boxGeo4, noseMat);
  eyeL.name = 'eyeL';
  eyeL.position.set(0.11, 0.15, 0.333);
  head.add(eyeL);
  const eyeShineL = new THREE.Mesh(boxGeo5, shineMat);
  eyeShineL.name = 'eyeShineL';
  eyeShineL.position.set(0.122, 0.165, 0.34);
  head.add(eyeShineL);
  const eyeR = new THREE.Mesh(boxGeo4, noseMat);
  eyeR.name = 'eyeR';
  eyeR.position.set(-0.11, 0.15, 0.333);
  head.add(eyeR);
  const eyeShineR = new THREE.Mesh(boxGeo5, shineMat);
  eyeShineR.name = 'eyeShineR';
  eyeShineR.position.set(-0.098, 0.165, 0.34);
  head.add(eyeShineR);
  const earL = new THREE.Group();
  earL.name = 'earL';
  earL.position.set(0.182, 0.28, 0.09);
  earL.rotation.set(0, 0, deg(-15));
  head.add(earL);
  const earOuterL = new THREE.Mesh(cylinderGeo, furMat);
  earOuterL.name = 'earOuterL';
  earOuterL.position.set(0, 0.056, 0);
  earOuterL.rotation.set(deg(90), 0, 0);
  earL.add(earOuterL);
  const earInnerL = new THREE.Mesh(cylinderGeo2, innerMat);
  earInnerL.name = 'earInnerL';
  earInnerL.position.set(0, 0.056, 0.025);
  earInnerL.rotation.set(deg(90), 0, 0);
  earL.add(earInnerL);
  const earR = new THREE.Group();
  earR.name = 'earR';
  earR.position.set(-0.182, 0.28, 0.09);
  earR.rotation.set(0, 0, deg(15));
  head.add(earR);
  const earOuterR = new THREE.Mesh(cylinderGeo, furMat);
  earOuterR.name = 'earOuterR';
  earOuterR.position.set(0, 0.056, 0);
  earOuterR.rotation.set(deg(90), 0, 0);
  earR.add(earOuterR);
  const earInnerR = new THREE.Mesh(cylinderGeo2, innerMat);
  earInnerR.name = 'earInnerR';
  earInnerR.position.set(0, 0.056, 0.025);
  earInnerR.rotation.set(deg(90), 0, 0);
  earR.add(earInnerR);

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

export default createBear;