/**
 * Sentry Bot — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 1,490 · Size (W × H × D): 1.83 × 2.12 × 1.99 m
 *
 * Usage:
 *   import { createSentryBot } from './sentry-bot.js';
 *   
 *   const model = createSentryBot();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

const deg = THREE.MathUtils.degToRad;

export function createSentryBot() {
  const root = new THREE.Group();
  root.name = 'SentryBot';

  // Materials
  const bodyMat = new THREE.MeshStandardMaterial({ name: 'body', color: 0xdfe2dc, roughness: 0.45, metalness: 0.2, flatShading: true });
  const accentMat = new THREE.MeshStandardMaterial({ name: 'accent', color: 0x3d6fb6, roughness: 0.45, metalness: 0.2, flatShading: true });
  const darkMat = new THREE.MeshStandardMaterial({ name: 'dark', color: 0x2d3036, roughness: 0.55, metalness: 0.45, flatShading: true });
  const metalMat = new THREE.MeshStandardMaterial({ name: 'metal', color: 0x9aa1aa, roughness: 0.3, metalness: 0.8, flatShading: true });
  const eyeMat = new THREE.MeshStandardMaterial({ name: 'eye', color: 0xff3b2f, roughness: 0.3, emissive: 0xff3b2f, emissiveIntensity: 1.7, flatShading: true });
  const warnMat = new THREE.MeshStandardMaterial({ name: 'warn', color: 0xe9c23a, roughness: 0.5, flatShading: true });

  // Shared geometries
  const sphereGeo = new THREE.SphereGeometry(0.08, 6, 4);
  const cylinderGeo = new THREE.CylinderGeometry(0.065, 0.075, 0.4079, 6);
  const sphereGeo2 = new THREE.SphereGeometry(0.075, 6, 4);
  const cylinderGeo2 = new THREE.CylinderGeometry(0.05, 0.06, 0.7558, 6);
  const cylinderGeo3 = new THREE.CylinderGeometry(0.085, 0.085, 0.2843, 6);
  const cylinderGeo4 = new THREE.CylinderGeometry(0.15, 0.18, 0.08, 8);
  const cylinderGeo5 = new THREE.CylinderGeometry(0.05, 0.05, 0.06, 6);
  const boxGeo = new THREE.BoxGeometry(0.07, 0.36, 0.2);
  const boxGeo2 = new THREE.BoxGeometry(0.14, 0.2, 0.42);
  const cylinderGeo6 = new THREE.CylinderGeometry(0.05, 0.05, 0.42, 8);
  const cylinderGeo7 = new THREE.CylinderGeometry(0.07, 0.07, 0.1, 8);
  const cylinderGeo8 = new THREE.CylinderGeometry(0.035, 0.035, 0.02, 8);
  const boxGeo3 = new THREE.BoxGeometry(0.06, 0.06, 0.2);

  // Parts
  const tripod = new THREE.Group();
  tripod.name = 'tripod';
  root.add(tripod);
  const hub = new THREE.Mesh(new THREE.CylinderGeometry(0.26, 0.3, 0.3, 6), darkMat);
  hub.name = 'hub';
  hub.position.set(0, 0.72, 0);
  tripod.add(hub);
  const hubCap = new THREE.Mesh(new THREE.CylinderGeometry(0.28, 0.28, 0.06, 6), accentMat);
  hubCap.name = 'hubCap';
  hubCap.position.set(0, 0.87, 0);
  tripod.add(hubCap);
  const neck = new THREE.Mesh(new THREE.CylinderGeometry(0.11, 0.13, 0.15, 8), metalMat);
  neck.name = 'neck';
  neck.position.set(0, 0.945, 0);
  tripod.add(neck);
  const leg1 = new THREE.Group();
  leg1.name = 'leg1';
  tripod.add(leg1);
  const hipJoint = new THREE.Mesh(sphereGeo, darkMat);
  hipJoint.name = 'hipJoint';
  hipJoint.position.set(0, 0.72, -0.22);
  leg1.add(hipJoint);
  const upperLeg = new THREE.Mesh(cylinderGeo, bodyMat);
  upperLeg.name = 'upperLeg';
  upperLeg.position.set(0, 0.76, -0.42);
  upperLeg.rotation.set(deg(-78.6901), 0, 0);
  leg1.add(upperLeg);
  const kneeJoint = new THREE.Mesh(sphereGeo2, darkMat);
  kneeJoint.name = 'kneeJoint';
  kneeJoint.position.set(0, 0.8, -0.62);
  leg1.add(kneeJoint);
  const piston = new THREE.Mesh(cylinderGeo2, metalMat);
  piston.name = 'piston';
  piston.position.set(0, 0.44, -0.735);
  piston.rotation.set(deg(-162.2842), 0, 0);
  leg1.add(piston);
  const pistonSleeve = new THREE.Mesh(cylinderGeo3, warnMat);
  pistonSleeve.name = 'pistonSleeve';
  pistonSleeve.position.set(0, 0.62, -0.6775);
  pistonSleeve.rotation.set(deg(-156.1398), 0, 0);
  leg1.add(pistonSleeve);
  const footPad = new THREE.Mesh(cylinderGeo4, darkMat);
  footPad.name = 'footPad';
  footPad.position.set(0, 0.04, -0.85);
  leg1.add(footPad);
  const footBolt = new THREE.Mesh(cylinderGeo5, accentMat);
  footBolt.name = 'footBolt';
  footBolt.position.set(0, 0.11, -0.85);
  leg1.add(footBolt);
  const leg2 = new THREE.Group();
  leg2.name = 'leg2';
  tripod.add(leg2);
  const hipJoint2 = new THREE.Mesh(sphereGeo, darkMat);
  hipJoint2.name = 'hipJoint';
  hipJoint2.position.set(-0.1905, 0.72, 0.11);
  leg2.add(hipJoint2);
  const upperLeg2 = new THREE.Mesh(cylinderGeo, bodyMat);
  upperLeg2.name = 'upperLeg';
  upperLeg2.position.set(-0.3637, 0.76, 0.21);
  upperLeg2.rotation.set(deg(31.5336), deg(20.3707), deg(64.9393));
  leg2.add(upperLeg2);
  const kneeJoint2 = new THREE.Mesh(sphereGeo2, darkMat);
  kneeJoint2.name = 'kneeJoint';
  kneeJoint2.position.set(-0.5369, 0.8, 0.31);
  leg2.add(kneeJoint2);
  const piston2 = new THREE.Mesh(cylinderGeo2, metalMat);
  piston2.name = 'piston';
  piston2.position.set(-0.6365, 0.44, 0.3675);
  piston2.rotation.set(deg(16.5545), deg(57.7246), deg(150.4286));
  leg2.add(piston2);
  const pistonSleeve2 = new THREE.Mesh(cylinderGeo3, warnMat);
  pistonSleeve2.name = 'pistonSleeve';
  pistonSleeve2.position.set(-0.5867, 0.62, 0.3387);
  pistonSleeve2.rotation.set(deg(21.2027), deg(55.998), deg(141.2129));
  leg2.add(pistonSleeve2);
  const footPad2 = new THREE.Mesh(cylinderGeo4, darkMat);
  footPad2.name = 'footPad';
  footPad2.position.set(-0.7361, 0.04, 0.425);
  leg2.add(footPad2);
  const footBolt2 = new THREE.Mesh(cylinderGeo5, accentMat);
  footBolt2.name = 'footBolt';
  footBolt2.position.set(-0.7361, 0.11, 0.425);
  leg2.add(footBolt2);
  const leg3 = new THREE.Group();
  leg3.name = 'leg3';
  tripod.add(leg3);
  const hipJoint3 = new THREE.Mesh(sphereGeo, darkMat);
  hipJoint3.name = 'hipJoint';
  hipJoint3.position.set(0.1905, 0.72, 0.11);
  leg3.add(hipJoint3);
  const upperLeg3 = new THREE.Mesh(cylinderGeo, bodyMat);
  upperLeg3.name = 'upperLeg';
  upperLeg3.position.set(0.3637, 0.76, 0.21);
  upperLeg3.rotation.set(deg(31.5336), deg(-20.3707), deg(-64.9393));
  leg3.add(upperLeg3);
  const kneeJoint3 = new THREE.Mesh(sphereGeo2, darkMat);
  kneeJoint3.name = 'kneeJoint';
  kneeJoint3.position.set(0.5369, 0.8, 0.31);
  leg3.add(kneeJoint3);
  const piston3 = new THREE.Mesh(cylinderGeo2, metalMat);
  piston3.name = 'piston';
  piston3.position.set(0.6365, 0.44, 0.3675);
  piston3.rotation.set(deg(16.5545), deg(-57.7246), deg(-150.4286));
  leg3.add(piston3);
  const pistonSleeve3 = new THREE.Mesh(cylinderGeo3, warnMat);
  pistonSleeve3.name = 'pistonSleeve';
  pistonSleeve3.position.set(0.5867, 0.62, 0.3388);
  pistonSleeve3.rotation.set(deg(21.2027), deg(-55.998), deg(-141.2129));
  leg3.add(pistonSleeve3);
  const footPad3 = new THREE.Mesh(cylinderGeo4, darkMat);
  footPad3.name = 'footPad';
  footPad3.position.set(0.7361, 0.04, 0.425);
  leg3.add(footPad3);
  const footBolt3 = new THREE.Mesh(cylinderGeo5, accentMat);
  footBolt3.name = 'footBolt';
  footBolt3.position.set(0.7361, 0.11, 0.425);
  leg3.add(footBolt3);
  const head = new THREE.Group();
  head.name = 'head';
  head.position.set(0, 1.02, 0);
  head.rotation.set(0, deg(25), 0);
  root.add(head);
  const bearingRing = new THREE.Mesh(new THREE.CylinderGeometry(0.2, 0.22, 0.08, 12), accentMat);
  bearingRing.name = 'bearingRing';
  bearingRing.position.set(0, 0.04, 0);
  head.add(bearingRing);
  const yokeBase = new THREE.Mesh(new THREE.BoxGeometry(0.3, 0.12, 0.3), darkMat);
  yokeBase.name = 'yokeBase';
  yokeBase.position.set(0, 0.14, 0);
  head.add(yokeBase);
  const yokeArm = new THREE.Mesh(boxGeo, darkMat);
  yokeArm.name = 'yokeArm';
  yokeArm.position.set(0.3, 0.26, 0);
  head.add(yokeArm);
  const yokeArm2 = new THREE.Mesh(boxGeo, darkMat);
  yokeArm2.name = 'yokeArm';
  yokeArm2.position.set(-0.3, 0.26, 0);
  head.add(yokeArm2);
  const aim = new THREE.Group();
  aim.name = 'aim';
  aim.position.set(0, 0.42, 0);
  aim.rotation.set(deg(-5), 0, 0);
  aim.scale.setScalar(1.2);
  head.add(aim);
  const shell = new THREE.Mesh(new THREE.SphereGeometry(0.32, 10, 7), bodyMat);
  shell.name = 'shell';
  shell.scale.set(1, 0.86, 1.08);
  aim.add(shell);
  const topArmor = new THREE.Mesh(new THREE.SphereGeometry(0.33, 10, 3, 0, Math.PI * 2, 0, 0.75), accentMat);
  topArmor.name = 'topArmor';
  topArmor.scale.set(1, 0.86, 1.08);
  aim.add(topArmor);
  const seam = new THREE.Mesh(new THREE.BoxGeometry(0.66, 0.06, 0.5), darkMat);
  seam.name = 'seam';
  seam.position.set(0, -0.06, -0.05);
  aim.add(seam);
  const eyeSocket = new THREE.Mesh(new THREE.CylinderGeometry(0.15, 0.17, 0.1, 12), darkMat);
  eyeSocket.name = 'eyeSocket';
  eyeSocket.position.set(0, 0.02, 0.32);
  eyeSocket.rotation.set(deg(90), 0, 0);
  aim.add(eyeSocket);
  const eyeGlow = new THREE.Mesh(new THREE.CylinderGeometry(0.11, 0.11, 0.04, 12), eyeMat);
  eyeGlow.name = 'eyeGlow';
  eyeGlow.position.set(0, 0.02, 0.37);
  eyeGlow.rotation.set(deg(90), 0, 0);
  aim.add(eyeGlow);
  const pupil = new THREE.Mesh(new THREE.CylinderGeometry(0.045, 0.045, 0.03, 8), darkMat);
  pupil.name = 'pupil';
  pupil.position.set(0, 0.02, 0.39);
  pupil.rotation.set(deg(90), 0, 0);
  aim.add(pupil);
  const eyeRim = new THREE.Mesh(new THREE.TorusGeometry(0.16, 0.025, 4, 12), metalMat);
  eyeRim.name = 'eyeRim';
  eyeRim.position.set(0, 0.02, 0.37);
  aim.add(eyeRim);
  const antenna = new THREE.Mesh(new THREE.CylinderGeometry(0.012, 0.018, 0.35, 5), metalMat);
  antenna.name = 'antenna';
  antenna.position.set(-0.14, 0.375, -0.12);
  antenna.rotation.set(0, 0, deg(12));
  aim.add(antenna);
  const antennaTip = new THREE.Mesh(new THREE.SphereGeometry(0.025, 5, 3), eyeMat);
  antennaTip.name = 'antennaTip';
  antennaTip.position.set(-0.18, 0.55, -0.12);
  aim.add(antennaTip);
  const ammoDrum = new THREE.Mesh(new THREE.CylinderGeometry(0.14, 0.14, 0.3, 10), darkMat);
  ammoDrum.name = 'ammoDrum';
  ammoDrum.position.set(0, -0.02, -0.33);
  ammoDrum.rotation.set(0, 0, deg(90));
  aim.add(ammoDrum);
  const gunL = new THREE.Group();
  gunL.name = 'gunL';
  gunL.position.set(0.4, -0.02, 0);
  aim.add(gunL);
  const gunHousing = new THREE.Mesh(boxGeo2, accentMat);
  gunHousing.name = 'gunHousing';
  gunHousing.position.set(0, 0, 0.02);
  gunL.add(gunHousing);
  const barrel = new THREE.Mesh(cylinderGeo6, metalMat);
  barrel.name = 'barrel';
  barrel.position.set(0, 0.02, 0.42);
  barrel.rotation.set(deg(90), 0, 0);
  gunL.add(barrel);
  const muzzle = new THREE.Mesh(cylinderGeo7, darkMat);
  muzzle.name = 'muzzle';
  muzzle.position.set(0, 0.02, 0.62);
  muzzle.rotation.set(deg(90), 0, 0);
  gunL.add(muzzle);
  const muzzleGlow = new THREE.Mesh(cylinderGeo8, eyeMat);
  muzzleGlow.name = 'muzzleGlow';
  muzzleGlow.position.set(0, 0.02, 0.675);
  muzzleGlow.rotation.set(deg(90), 0, 0);
  gunL.add(muzzleGlow);
  const gunMount = new THREE.Mesh(boxGeo3, darkMat);
  gunMount.name = 'gunMount';
  gunMount.position.set(-0.08, 0, -0.05);
  gunL.add(gunMount);
  const gunR = new THREE.Group();
  gunR.name = 'gunR';
  gunR.position.set(-0.4, -0.02, 0);
  aim.add(gunR);
  const gunHousing2 = new THREE.Mesh(boxGeo2, accentMat);
  gunHousing2.name = 'gunHousing';
  gunHousing2.position.set(0, 0, 0.02);
  gunR.add(gunHousing2);
  const barrel2 = new THREE.Mesh(cylinderGeo6, metalMat);
  barrel2.name = 'barrel';
  barrel2.position.set(0, 0.02, 0.42);
  barrel2.rotation.set(deg(90), 0, 0);
  gunR.add(barrel2);
  const muzzle2 = new THREE.Mesh(cylinderGeo7, darkMat);
  muzzle2.name = 'muzzle';
  muzzle2.position.set(0, 0.02, 0.62);
  muzzle2.rotation.set(deg(90), 0, 0);
  gunR.add(muzzle2);
  const muzzleGlow2 = new THREE.Mesh(cylinderGeo8, eyeMat);
  muzzleGlow2.name = 'muzzleGlow';
  muzzleGlow2.position.set(0, 0.02, 0.675);
  muzzleGlow2.rotation.set(deg(90), 0, 0);
  gunR.add(muzzleGlow2);
  const gunMount2 = new THREE.Mesh(boxGeo3, darkMat);
  gunMount2.name = 'gunMount';
  gunMount2.position.set(0.08, 0, -0.05);
  gunR.add(gunMount2);

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

export default createSentryBot;