import Terria from "../../Terria";
import CommonStrata from "../../Definition/CommonStrata";
import upsertModelFromJson from "../../Definition/upsertModelFromJson";
import CatalogMemberFactory from "../CatalogMemberFactory";
import UrlReference from "./UrlReference";
import TerriaError from "../../../Core/TerriaError";

export default async function createUrlReferenceFromUrl(
  url: string,
  terria: Terria,
  allowLoad: boolean
): Promise<UrlReference | undefined> {
  try {
    const item = upsertModelFromJson(
      CatalogMemberFactory,
      terria,
      "",
      CommonStrata.definition,
      {
        type: UrlReference.type,
        name: url,
        localId: url,
        allowLoad: allowLoad
      },
      {}
    ).throwIfUndefined() as UrlReference;

    // Set URL in user stratum so it can be shared
    item.setTrait(CommonStrata.user, "url", url);

    if (!(item instanceof UrlReference)) {
      throw `Invalid model type`;
    }

    terria.catalog.userAddedDataGroup.add(CommonStrata.user, item);

    (await item.loadReference()).throwIfError();
    if (item.target !== undefined) {
      return item;
    }
  } catch (e) {
    throw TerriaError.from(e, `Could not load UrlReference for URL: ${url}`);
  }
}