/*
 * Copyright (c) 2021 Huawei Device Co., Ltd.
 * 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 { appMap } from './map';

/**
 * Get appGlobal of App.
 * @param {string} packageName - Package name.
 * @return {Object | ProxyConstructor}
 */
export function getPageGlobal(packageName: string): object | ProxyConstructor {
  if (!appMap[packageName] || !appMap[packageName].appGlobal) {
    return Object.create(global);
  }
  return new Proxy(Object.create(appMap[packageName].appGlobal), {
    get(trapTarget, key, receiver) {
      if (key === '__proto__') {
        return appMap[packageName].appGlobal;
      }
      return Reflect.get(trapTarget, key, receiver);
    }
  });
}