import { EventBusSession, Listener, EventBusManager, EventType } from '../../Event';
import { useEffect, useState } from 'react';

export const useEventBus = (key: symbol, listernerMap: Map<EventType<any>, Listener<any>>) => {
  const [eventBus] = useState(EventBusManager.getInstance());

  useEffect(() => {
    let session: EventBusSession;
    if (key) {
      eventBus.registerTempEventBus(key);
      session = eventBus.getTempEventSession(key)!;

      for (let item of listernerMap.entries()) {
        session?.on(item[0], item[1]);
      }
    }

    return () => {
      if (key) {
        session?.clear();
        eventBus.unRegisterTempEventBus(key);
      }
    };
  }, []);

  return {
    eventBus,
  };
};