/*
 * Copyright 2020 The Backstage Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { useVersionedContext } from '@backstage/version-bridge';
import { AppContext as AppContextV1 } from './types';

export const useApp = (): AppContextV1 => {
  const versionedContext =
    useVersionedContext<{ 1: AppContextV1 }>('app-context');
  if (!versionedContext) {
    throw new Error('App context is not available');
  }

  const appContext = versionedContext.atVersion(1);
  if (!appContext) {
    throw new Error('AppContext v1 not available');
  }
  return appContext;
};
