import { useEffect, useState } from 'react';

import { ipcChannels } from '../../../shared/ipc/contracts';
import type { PlaylistsState } from '../../../shared/types/appPlaylists';
import { getDndApi } from '../dndApi';

const EMPTY: PlaylistsState = { playlists: [], audios: [] };

export function useAppPlaylists(): PlaylistsState {
  const api = getDndApi();
  const [state, setState] = useState<PlaylistsState>(EMPTY);

  useEffect(() => {
    void api.invoke(ipcChannels.playlists.getState, {}).then(setState);
    return api.on(ipcChannels.playlists.stateChanged, (next) => setState(next));
  }, [api]);

  return state;
}