/*
 * Copyright (c) 2022-2023 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.
 */

/**
 * @file
 * @kit AbilityKit
 */

import AbilityConstant from './@ohos.app.ability.AbilityConstant';
import AbilityStageContext from './application/AbilityStageContext';
import Want from './@ohos.app.ability.Want';
import { Configuration } from './@ohos.app.ability.Configuration';

/**
 * The class of an ability stage.
 *
 * @syscap SystemCapability.Ability.AbilityRuntime.Core
 * @stagemodelonly
 * @since 9
 */
/**
 * The class of an ability stage.
 *
 * @syscap SystemCapability.Ability.AbilityRuntime.Core
 * @stagemodelonly
 * @crossplatform
 * @since 10
 */
/**
 * The class of an ability stage.
 *
 * @syscap SystemCapability.Ability.AbilityRuntime.Core
 * @stagemodelonly
 * @crossplatform
 * @atomicservice
 * @since 11
 */
export default class AbilityStage {
  /**
   * Indicates configuration information about context.
   *
   * @type { AbilityStageContext }
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @since 9
   */
  /**
   * Indicates configuration information about context.
   *
   * @type { AbilityStageContext }
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @crossplatform
   * @since 10
   */
  /**
   * Indicates configuration information about context.
   *
   * @type { AbilityStageContext }
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  context: AbilityStageContext;

  /**
   * Called back when an ability stage is started for initialization.
   *
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @since 9
   */
  /**
   * Called back when an ability stage is started for initialization.
   *
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @crossplatform
   * @since 10
   */
  /**
   * Called back when an ability stage is started for initialization.
   *
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  onCreate(): void;

  /**
   * Called back when start specified ability.
   *
   * @param { Want } want - Indicates the want info of started ability.
   * @returns { string } The user returns an ability string ID. If the ability of this ID has been started before,
   *         do not create a new instance and pull it back to the top of the stack.
   *         Otherwise, create a new instance and start it.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @since 9
   */
  /**
   * Called back when start specified ability.
   *
   * @param { Want } want - Indicates the want info of started ability.
   * @returns { string } The user returns an ability string ID. If the ability of this ID has been started before,
   *         do not create a new instance and pull it back to the top of the stack.
   *         Otherwise, create a new instance and start it.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @atomicservice
   * @since 11
   */
  onAcceptWant(want: Want): string;

  /**
   * Called back when start UIAbility in specified process.
   *
   * @param { Want } want - Indicates the want info of started ability.
   * @returns { string } The user returns an process string ID. If the process of this ID has been created before,
   *         let the ability run in this process. Otherwise, create a new process.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @since 11
   */
  onNewProcessRequest(want: Want): string;

  /**
   * Called when the system configuration is updated.
   *
   * @param { Configuration } newConfig - Indicates the updated configuration.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @since 9
   */
  /**
   * Called when the system configuration is updated.
   *
   * @param { Configuration } newConfig - Indicates the updated configuration.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @crossplatform
   * @since 10
   */
  /**
   * Called when the system configuration is updated.
   *
   * @param { Configuration } newConfig - Indicates the updated configuration.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  onConfigurationUpdate(newConfig: Configuration): void;

  /**
   * Called when the system has determined to trim the memory, for example, when the ability is running in the
   * background and there is no enough memory for running as many background processes as possible.
   *
   * @param { AbilityConstant.MemoryLevel } level - Indicates the memory trim level, which shows the current memory usage status.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @since 9
   */
  /**
   * Called when the system has determined to trim the memory, for example, when the ability is running in the
   * background and there is no enough memory for running as many background processes as possible.
   *
   * @param { AbilityConstant.MemoryLevel } level - Indicates the memory trim level, which shows the current memory usage status.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @atomicservice
   * @since 11
   */
  onMemoryLevel(level: AbilityConstant.MemoryLevel): void;

  /**
   * Called back when an ability stage is Destroyed.
   * Will not call the onDestroy function when killing a process or crashing abnormally.
   *
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @atomicservice
   * @since 12
   */
  onDestroy(): void;

  /**
   * Called back before an ability stage is terminated.
   *
   * @permission ohos.permission.PREPARE_APP_TERMINATE
   * @returns { AbilityConstant.PrepareTermination } The user returns an action indicating
   *                                                 what the process should do prior to terminating.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @atomicservice
   * @since 15
   */
  onPrepareTermination(): AbilityConstant.PrepareTermination;

  /**
   * Called back asynchronously before an ability stage is terminated.
   * If onPrepareTerminationAsync has been implemented then onPrepareTermination won't take effect
   *
   * @permission ohos.permission.PREPARE_APP_TERMINATE
   * @returns { Promise<AbilityConstant.PrepareTermination> } The user returns a promise of the action indicating
   *                                                          what the process should do prior to terminating.
   * @syscap SystemCapability.Ability.AbilityRuntime.Core
   * @stagemodelonly
   * @atomicservice
   * @since 15
   */
  onPrepareTerminationAsync(): Promise<AbilityConstant.PrepareTermination>;
}