/**
 * Fox — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 324 · Size (W × H × D): 0.27 × 0.56 × 0.91 m
 *
 * Usage:
 *   import { createFox } from './fox.js';
 *   
 *   const model = createFox();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

const deg = THREE.MathUtils.degToRad;

// Extrude a 2D outline along Z (centered). bevel = [thickness, size, segments].
function extrude(outline, depth, holes = [], bevel = null) {
  const shape = new THREE.Shape(outline.map(([x, y]) => new THREE.Vector2(x, y)));
  for (const hole of holes) shape.holes.push(new THREE.Path(hole.map(([x, y]) => new THREE.Vector2(x, y))));
  const options = bevel
    ? { depth, bevelEnabled: true, bevelThickness: bevel[0], bevelSize: bevel[1], bevelSegments: bevel[2] }
    : { depth, bevelEnabled: false };
  return new THREE.ExtrudeGeometry(shape, options).translate(0, 0, -depth / 2);
}

export function createFox() {
  const root = new THREE.Group();
  root.name = 'Fox';

  // Materials
  const furMat = new THREE.MeshStandardMaterial({ name: 'fur', color: 0xe57a2e, roughness: 0.85, flatShading: true });
  const whiteMat = new THREE.MeshStandardMaterial({ name: 'white', color: 0xf7efe2, roughness: 0.9, flatShading: true });
  const darkMat = new THREE.MeshStandardMaterial({ name: 'dark', color: 0x3b2b27, roughness: 0.8, flatShading: true });
  const eyeMat = new THREE.MeshStandardMaterial({ name: 'eye', color: 0x1a1515, roughness: 0.35, flatShading: true });
  const shineMat = new THREE.MeshStandardMaterial({ name: 'shine', color: 0xffffff, roughness: 0.4, flatShading: true });

  // Shared geometries
  const boxGeo = new THREE.BoxGeometry(0.055, 0.06, 0.055);
  const boxGeo2 = new THREE.BoxGeometry(0.06, 0.09, 0.06);
  const boxGeo3 = new THREE.BoxGeometry(0.035, 0.045, 0.01);
  const boxGeo4 = new THREE.BoxGeometry(0.014, 0.014, 0.006);
  const extrudeGeo = extrude([[-0.055, 0], [0.055, 0], [0, 0.13]], 0.03);
  const extrudeGeo2 = extrude([[-0.032, 0.012], [0.032, 0.012], [0, 0.085]], 0.01);
  const extrudeGeo3 = extrude([[-0.0285, 0.068], [0.0285, 0.068], [0, 0.135]], 0.036);

  // Parts
  const legFL = new THREE.Group();
  legFL.name = 'legFL';
  legFL.position.set(0.065, 0.15, 0.11);
  root.add(legFL);
  const legFLUpper = new THREE.Mesh(boxGeo, furMat);
  legFLUpper.name = 'legFLUpper';
  legFLUpper.position.set(0, -0.03, 0);
  legFL.add(legFLUpper);
  const legFLSock = new THREE.Mesh(boxGeo2, darkMat);
  legFLSock.name = 'legFLSock';
  legFLSock.position.set(0, -0.105, 0.003);
  legFL.add(legFLSock);
  const legFR = new THREE.Group();
  legFR.name = 'legFR';
  legFR.position.set(-0.065, 0.15, 0.11);
  root.add(legFR);
  const legFRUpper = new THREE.Mesh(boxGeo, furMat);
  legFRUpper.name = 'legFRUpper';
  legFRUpper.position.set(0, -0.03, 0);
  legFR.add(legFRUpper);
  const legFRSock = new THREE.Mesh(boxGeo2, darkMat);
  legFRSock.name = 'legFRSock';
  legFRSock.position.set(0, -0.105, 0.003);
  legFR.add(legFRSock);
  const legBL = new THREE.Group();
  legBL.name = 'legBL';
  legBL.position.set(0.065, 0.15, -0.12);
  root.add(legBL);
  const legBLUpper = new THREE.Mesh(boxGeo, furMat);
  legBLUpper.name = 'legBLUpper';
  legBLUpper.position.set(0, -0.03, 0);
  legBL.add(legBLUpper);
  const legBLSock = new THREE.Mesh(boxGeo2, darkMat);
  legBLSock.name = 'legBLSock';
  legBLSock.position.set(0, -0.105, 0.003);
  legBL.add(legBLSock);
  const legBR = new THREE.Group();
  legBR.name = 'legBR';
  legBR.position.set(-0.065, 0.15, -0.12);
  root.add(legBR);
  const legBRUpper = new THREE.Mesh(boxGeo, furMat);
  legBRUpper.name = 'legBRUpper';
  legBRUpper.position.set(0, -0.03, 0);
  legBR.add(legBRUpper);
  const legBRSock = new THREE.Mesh(boxGeo2, darkMat);
  legBRSock.name = 'legBRSock';
  legBRSock.position.set(0, -0.105, 0.003);
  legBR.add(legBRSock);
  const body = new THREE.Group();
  body.name = 'body';
  root.add(body);
  const torso = new THREE.Mesh(new THREE.BoxGeometry(0.19, 0.17, 0.36), furMat);
  torso.name = 'torso';
  torso.position.set(0, 0.205, 0);
  body.add(torso);
  const chest = new THREE.Mesh(new THREE.BoxGeometry(0.15, 0.11, 0.04), whiteMat);
  chest.name = 'chest';
  chest.position.set(0, 0.195, 0.19);
  body.add(chest);
  const belly = new THREE.Mesh(new THREE.BoxGeometry(0.13, 0.012, 0.24), whiteMat);
  belly.name = 'belly';
  belly.position.set(0, 0.116, 0.02);
  body.add(belly);
  const tail = new THREE.Group();
  tail.name = 'tail';
  tail.position.set(0, 0.25, -0.16);
  tail.rotation.set(deg(18), 0, 0);
  root.add(tail);
  const tailBase = new THREE.Mesh(new THREE.BoxGeometry(0.09, 0.09, 0.12), furMat);
  tailBase.name = 'tailBase';
  tailBase.position.set(0, 0, -0.06);
  tail.add(tailBase);
  const tailBush = new THREE.Mesh(new THREE.BoxGeometry(0.14, 0.14, 0.16), furMat);
  tailBush.name = 'tailBush';
  tailBush.position.set(0, 0.02, -0.18);
  tail.add(tailBush);
  const tailTip = new THREE.Mesh(new THREE.BoxGeometry(0.12, 0.12, 0.09), whiteMat);
  tailTip.name = 'tailTip';
  tailTip.position.set(0, 0.025, -0.3);
  tail.add(tailTip);
  const head = new THREE.Group();
  head.name = 'head';
  head.position.set(0, 0.26, 0.15);
  root.add(head);
  const skull = new THREE.Mesh(new THREE.BoxGeometry(0.26, 0.2, 0.2), furMat);
  skull.name = 'skull';
  skull.position.set(0, 0.08, 0.05);
  head.add(skull);
  const cheeks = new THREE.Mesh(new THREE.BoxGeometry(0.268, 0.075, 0.12), whiteMat);
  cheeks.name = 'cheeks';
  cheeks.position.set(0, 0.0135, 0.094);
  head.add(cheeks);
  const snout = new THREE.Mesh(new THREE.BoxGeometry(0.1, 0.06, 0.09), furMat);
  snout.name = 'snout';
  snout.position.set(0, 0.05, 0.195);
  head.add(snout);
  const jaw = new THREE.Mesh(new THREE.BoxGeometry(0.108, 0.03, 0.098), whiteMat);
  jaw.name = 'jaw';
  jaw.position.set(0, 0.031, 0.195);
  head.add(jaw);
  const nose = new THREE.Mesh(new THREE.BoxGeometry(0.04, 0.03, 0.025), darkMat);
  nose.name = 'nose';
  nose.position.set(0, 0.07, 0.248);
  head.add(nose);
  const eyeL = new THREE.Mesh(boxGeo3, eyeMat);
  eyeL.name = 'eyeL';
  eyeL.position.set(0.07, 0.105, 0.154);
  head.add(eyeL);
  const eyeShineL = new THREE.Mesh(boxGeo4, shineMat);
  eyeShineL.name = 'eyeShineL';
  eyeShineL.position.set(0.075, 0.115, 0.16);
  head.add(eyeShineL);
  const eyeR = new THREE.Mesh(boxGeo3, eyeMat);
  eyeR.name = 'eyeR';
  eyeR.position.set(-0.07, 0.105, 0.154);
  head.add(eyeR);
  const eyeShineR = new THREE.Mesh(boxGeo4, shineMat);
  eyeShineR.name = 'eyeShineR';
  eyeShineR.position.set(-0.075, 0.115, 0.16);
  head.add(eyeShineR);
  const earL = new THREE.Group();
  earL.name = 'earL';
  earL.position.set(0.08, 0.17, 0.02);
  earL.rotation.set(deg(-6), 0, deg(-12));
  head.add(earL);
  const earOuterL = new THREE.Mesh(extrudeGeo, furMat);
  earOuterL.name = 'earOuterL';
  earL.add(earOuterL);
  const earInnerL = new THREE.Mesh(extrudeGeo2, whiteMat);
  earInnerL.name = 'earInnerL';
  earInnerL.position.set(0, 0, 0.019);
  earL.add(earInnerL);
  const earTipL = new THREE.Mesh(extrudeGeo3, darkMat);
  earTipL.name = 'earTipL';
  earL.add(earTipL);
  const earR = new THREE.Group();
  earR.name = 'earR';
  earR.position.set(-0.08, 0.17, 0.02);
  earR.rotation.set(deg(-6), 0, deg(12));
  head.add(earR);
  const earOuterR = new THREE.Mesh(extrudeGeo, furMat);
  earOuterR.name = 'earOuterR';
  earR.add(earOuterR);
  const earInnerR = new THREE.Mesh(extrudeGeo2, whiteMat);
  earInnerR.name = 'earInnerR';
  earInnerR.position.set(0, 0, 0.019);
  earR.add(earInnerR);
  const earTipR = new THREE.Mesh(extrudeGeo3, darkMat);
  earTipR.name = 'earTipR';
  earR.add(earTipR);

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

export default createFox;