/**
 * @author Martin Karkowski
 * @email m.karkowski@zema.de
 * @create date 2020-11-06 08:52:48
 * @modify date 2020-12-02 15:15:32
 * @desc [description]
 */

import { getSingleton } from "../helpers/singletonMethod";
import { NopeGenericModule } from "../module/GenericModule";
import { NopeObservable } from "../observables/nopeObservable";
import { INopeDispatcherOptions } from "../types/nope/nopeCommunication.interface";
import { INopeDispatcher } from "../types/nope/nopeDispatcher.interface";
import { nopeDispatcher } from "./nopeDispatcher";

/**
 * Function to extract a Singleton Dispatcher
 * @param options The provided options for the Dispatcher
 */
export function getDispatcher(options: INopeDispatcherOptions) {
  const container = getSingleton("nopeBackendDispatcher.instance", () => {
    const dispatcher = new nopeDispatcher(options, () => new NopeObservable());

    // Register a default instance generator:
    // Defaultly generate a NopeGenericModule
    dispatcher.registerInternalInstanceGenerator(
      "*",
      async (dispather, description) => {
        const mod = new NopeGenericModule(
          dispather,
          () => new NopeObservable()
        );
        await mod.fromDescription(description, "overwrite");
        // await mod.init();
        return mod;
      }
    );

    // Return the Dispathcer
    return dispatcher as INopeDispatcher;
  });

  return container.instance;
}