import { atomFamily, selectorFamily, useRecoilValue } from 'recoil';

export const DEFAULT_LOADER = '@recoil-toolkit.loader.global';

export const loader = atomFamily<number, string>({
   key: '@recoil-toolkit.loader',
   default: 0,
});

export const isLoading = selectorFamily<boolean, string>({
   key: '@recoil-toolkit.loader.isLoading',
   get:
      (key: string) =>
      ({ get }) =>
         get(loader(key)) > 0,
});

export const useIsLoading = (key?: string) => useRecoilValue(isLoading(key || DEFAULT_LOADER));