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1/*
2 * Copyright (c) 2025 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16import { HiLog } from './HiLog';
17import commonEventManager from '@ohos.commonEventManager';
18import { BusinessError, emitter } from '@kit.BasicServicesKit';
19import Constants from './constant';
20
21const TAG = 'CommonEventManager';
22
23export default class CommonEventManager {
24  private static instance: CommonEventManager;
25  private subscribe: commonEventManager.CommonEventSubscriber | undefined;
26  private subscribeInfo: commonEventManager.CommonEventSubscribeInfo = {
27    events: [commonEventManager.Support.COMMON_EVENT_SCREEN_LOCKED]
28  };
29
30  private constructor() {
31  }
32
33  static getInstance(): CommonEventManager {
34    if (!CommonEventManager.instance) {
35      CommonEventManager.instance = new CommonEventManager();
36    }
37    return CommonEventManager.instance;
38  }
39
40  public async init(): Promise<void> {
41    HiLog.info(TAG, 'CommonEventManager init');
42    let subscribeCB = (err: BusinessError, data: commonEventManager.CommonEventData): void => {
43      if (err) {
44        HiLog.wrapError(TAG, err, 'subscribeCB error');
45      } else {
46        switch (data.event) {
47          case commonEventManager.Support.COMMON_EVENT_SCREEN_LOCKED:
48            HiLog.info(TAG, 'subscribeCB COMMON_EVENT_SCREEN_LOCKED');
49            emitter.emit(Constants.SCREEN_OFF_EVENT);
50            break;
51          default:
52            HiLog.error(TAG, 'unKnow event');
53        }
54      }
55    };
56
57    let createCB = (err: BusinessError, commonEventSubscriber: commonEventManager.CommonEventSubscriber): void => {
58      if (err) {
59        HiLog.wrapError(TAG, err, 'createCB failed');
60      } else {
61        HiLog.info(TAG, 'createCB data');
62        this.subscribe = commonEventSubscriber;
63        try {
64          commonEventManager.subscribe(this.subscribe, subscribeCB);
65          HiLog.info(TAG, 'subscribe success');
66        } catch (err) {
67          HiLog.wrapError(TAG, err, 'subscribe failed');
68        }
69      }
70    };
71
72    try {
73      commonEventManager.createSubscriber(this.subscribeInfo, createCB);
74      HiLog.info(TAG, 'createSubscriber success');
75    } catch (err) {
76      HiLog.wrapError(TAG, err, 'createSubscriber failed');
77    }
78  }
79
80  public unsubscribe(): void {
81    try {
82      commonEventManager.unsubscribe(this.subscribe, (err: BusinessError) => {
83        if (err) {
84          HiLog.wrapError(TAG, err, 'unsubscribe error');
85          return;
86        }
87        this.subscribe = undefined;
88        HiLog.info(TAG, 'subscribe unsubscribe');
89      });
90    } catch (error) {
91      HiLog.wrapError(TAG, error, 'Failed to unsubscribe');
92    }
93  }
94}