@bemit/consent-ui-react/usePreferState/usePreferState.js

import React from 'react';
export const usePreferState = (userPrefers, prefersInitial) => {
  const [nextUserPrefers, setNextUserPrefers] = React.useState({});
  React.useEffect(() => {
    setNextUserPrefers(typeof userPrefers === 'undefined' ? {
      ...prefersInitial
    } : {
      ...userPrefers
    });
  }, [userPrefers, prefersInitial, setNextUserPrefers]);
  const toggleGroup = React.useCallback(group => {
    setNextUserPrefers((up = {}) => {
      return {
        ...up,
        groups: {
          ...(up?.groups || {}),
          [group]: up?.groups?.[group] ? undefined : 2
        }
      };
    });
  }, [setNextUserPrefers]);
  const toggleService = React.useCallback(service => {
    setNextUserPrefers((up = {}) => {
      return {
        ...up,
        services: {
          ...(up?.services || {}),
          [service]: up?.services?.[service] ? undefined : 2
        }
      };
    });
  }, [setNextUserPrefers]);
  return {
    nextUserPrefers,
    toggleGroup,
    toggleService
  };
};