import { createContext, useContext } from 'solid-js';
import assert from '../../utils/assert';
import FocusNavigator from '../../utils/focus-navigator';

export const FeedContentContext = createContext<FocusNavigator>();

export function useFeedContentContext(componentName: string): FocusNavigator {
  const context = useContext(FeedContentContext);
  assert(
    context,
    new Error(`<${componentName}> must be used inside a <FeedContent>`),
  );
  return context;
}

export function createFeedArticleFocusNavigator(owner: string): FocusNavigator {
  return new FocusNavigator(owner);
}