// Resolve the browser-style specifiers the game uses ("three", "/assets/...",
// "/vendor/...") to files on disk, and swap the DOM-bound PrototypeShell for
// a headless one. Registered by host.mjs through module.register().
import { pathToFileURL } from 'node:url';
import path from 'node:path';

let config;

export async function initialize(data) {
  config = data;
}

export async function resolve(specifier, context, next) {
  const { gameDir, threeModule, shellStub } = config;
  if (specifier === 'three' || specifier === '/vendor/three.module.js') {
    return { url: pathToFileURL(threeModule).href, shortCircuit: true };
  }
  if (specifier === '/assets/user-interface/PrototypeShell.js' && !context.parentURL?.endsWith('shell-stub.mjs')) {
    return { url: pathToFileURL(shellStub).href, shortCircuit: true };
  }
  if (specifier.startsWith('/assets/')) {
    return { url: pathToFileURL(path.join(gameDir, specifier)).href, shortCircuit: true };
  }
  return next(specifier, context);
}