odyfive/src/ui/utils/useLayer.ts

import { useEffect, useState } from "react";
import { useDispatch } from "react-redux";
import { addLayer, removeLayer, showLayer, hideLayer } from "~store/ui/reducer";
import { UILayer } from "~store/ui/state";

export default function useUILayer(data: UILayer, show: boolean) {
  const dispatch = useDispatch();

  const [id] = useState(data.type + "-" + Math.random().toString(32).slice(2));
  const [visible, setVisible] = useState(show);

  useEffect(() => {
    dispatch(addLayer({ id, data }));
    return () => {
      dispatch(removeLayer({ id }));
    };
  }, []);

  useEffect(() => {
    if (visible) {
      dispatch(showLayer({ id }));
    } else {
      dispatch(hideLayer({ id }));
    }
  }, [visible]);

  if (show != visible) {
    setVisible(show);
  }

  return id;
}