/**
 * Arrow Marker — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the model (it floats — pickups, planets)
 * Triangles: 76 · Size (W × H × D): 0.69 × 0.99 × 0.21 m
 *
 * Usage:
 *   import { createArrowMarker } from './arrow-marker.js';
 *   
 *   const model = createArrowMarker();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

// 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 createArrowMarker() {
  const root = new THREE.Group();
  root.name = 'ArrowMarker';

  // Materials
  const mainMat = new THREE.MeshStandardMaterial({ name: 'main', color: 0xffc93c, roughness: 0.4, emissive: 0xffc93c, emissiveIntensity: 0.45, flatShading: true });
  const whiteMat = new THREE.MeshStandardMaterial({ name: 'white', color: 0xfff2ce, roughness: 0.3, emissive: 0xffffff, emissiveIntensity: 0.5, flatShading: true });

  // Parts
  const marker = new THREE.Group();
  marker.name = 'marker';
  root.add(marker);
  const arrow = new THREE.Mesh(extrude([[0, -0.47], [0.3, -0.07], [0.12, -0.07], [0.12, 0.44], [-0.12, 0.44], [-0.12, -0.07], [-0.3, -0.07]], 0.12, [], [0.035, 0.035, 1]), mainMat);
  arrow.name = 'arrow';
  marker.add(arrow);
  const arrowInset = new THREE.Mesh(extrude([[0, -0.309], [0.165, -0.061], [0.066, -0.061], [0.066, 0.2552], [-0.066, 0.2552], [-0.066, -0.061], [-0.165, -0.061]], 0.21), whiteMat);
  arrowInset.name = 'arrowInset';
  marker.add(arrowInset);

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

export default createArrowMarker;