fcEventToAngularSignal.ts

import { Signal, signal } from '@angular/core';
import { Event } from '@flowcards/core';

export function getSignal<P, V>(event: Event<P, V>) {
  const eventSignal = signal<Event<P, V>>(event);
  event.registerCallback(() => {
    eventSignal.set(this._internalEvent);
  });
  return eventSignal.asReadonly;
}

type MapToSignal<T> = {
  [K in keyof T]: T[K] extends Event<infer V, infer B>
    ? Signal<Event<V, B>>
    : MapToSignal<T[K]>;
};

export function mapToSignals<T>(obj: T): MapToSignal<T> {
  const result: any = {};
  for (const key in obj) {
    const item = obj[key];
    if (item instanceof Event) {
      result[key] = getSignal(item);
    } else {
      result[key] = mapToSignals(item);
    }
  }
  return result;
}

const obj = {
  a: new Event<number>('a'),
  b: new Event<number>('b'),
  c: {
    d: new Event<string>('d'),
  },
};

const signalsObj = mapToSignals(obj);

// JUHUUUU!!!! x ist ein string!
const x = signalsObj.c.d().value;