clickResolver.ts

import { projects } from '@/data/projects';
import { Object3D } from 'three';

// What a 3D click resolves to in app-state terms.
export type ClickTarget =
  { kind: 'project'; projectId: string } | { kind: 'terminal' } | { kind: 'linkedin' } | null;

const PROJECT_IDS = new Set(projects.map((p) => p.id));

// Walks up from the picked mesh to the nearest named ancestor that maps
// to something the UI cares about. Underscore-not-dot separator: see
// anchors.ts for why.
const NAMED_NODE_RE = /^(Rack|Screen)_(.+)$/;

export function resolveClick(picked: Object3D | null): ClickTarget {
  let cur: Object3D | null = picked;
  while (cur) {
    // OperatorHolo + its HoloPedestal stand are parented to Desk in
    // the GLB. Both resolve to LinkedIn so the whole stand reads as a
    // single click target. Has to fire before the Desk → terminal
    // branch below or clicks would fall through to "terminal".
    if (cur.name === 'OperatorHolo' || cur.name === 'HoloPedestal') {
      return { kind: 'linkedin' };
    }
    const m = cur.name.match(NAMED_NODE_RE);
    if (m && PROJECT_IDS.has(m[2])) {
      return { kind: 'project', projectId: m[2] };
    }
    if (cur.name === 'Monitor' || cur.name === 'Desk') {
      return { kind: 'terminal' };
    }
    cur = cur.parent;
  }
  return null;
}