import registry from "./generated/manastormAssetPackages.json";
import {
  MANASTORM_STAGE_ASSET_SCHEMA_VERSION,
  registerManastormStageAssetPackage,
  type ManastormStageAssetPackage,
} from "./manastormStageAssets";

let initialized = false;
const generatedPackages = registry.packages as unknown as readonly ManastormStageAssetPackage[];

export const GENERATED_MANASTORM_STAGE_ASSET_PACKAGE_COUNT = registry.packages.length;

/** Resolves a runtime stage package to its independently downloadable content pack. */
export function generatedManastormContentPackId(assetPackageId: string): string | null {
  const assetPackage = generatedPackages.find((candidate) => candidate.id === assetPackageId);
  const assetUrl = assetPackage?.visual[0]?.url
    ?? assetPackage?.collision[0]?.url
    ?? assetPackage?.navigation.url;
  const directory = /^\/assets\/game\/manastorm\/([^/]+)\//.exec(assetUrl ?? "")?.[1];
  return directory ? `manastorm:${directory}` : null;
}

export function registerGeneratedManastormStageAssets(): readonly string[] {
  if (initialized) return Object.freeze(generatedPackages.map((assetPackage) => assetPackage.id));
  if (registry.schemaVersion !== MANASTORM_STAGE_ASSET_SCHEMA_VERSION) {
    throw new Error(`Unsupported generated Manastorm asset registry schema ${registry.schemaVersion}.`);
  }
  const registered: string[] = [];
  for (const assetPackage of generatedPackages) {
    registerManastormStageAssetPackage(assetPackage);
    registered.push(assetPackage.id);
  }
  initialized = true;
  return Object.freeze(registered);
}