1/*
2 * Copyright (c) 2022 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 BatteryInfo from "@ohos.batteryInfo";
17import commonEvent from "@ohos.commonEvent";
18import createOrGet from "../../../../../../common/src/main/ets/default/SingleInstanceHelper";
19import Constants from "./common/constants";
20import Log from "../../../../../../common/src/main/ets/default/Log";
21import {CommonEventData} from "commonEvent/commonEventData";
22import {CommonEventManager, getCommonEventManager, POLICY} from "../../../../../../common/src/main/ets/default/commonEvent/CommonEventManager";
23
24const TAG = "BatteryComponent-batteryModel";
25const DEFAULT_PROGRESS = 100;
26const SUBSCRIBE_INFO = {
27  events: [commonEvent.Support.COMMON_EVENT_BATTERY_CHANGED],
28};
29
30function getChargingStatus(state: BatteryInfo.BatteryChargeState): boolean {
31  Log.showDebug(TAG, `charging status update: ${state}`);
32  let batteryStatus = false;
33  switch (state) {
34    case BatteryInfo.BatteryChargeState.DISABLE:
35    case BatteryInfo.BatteryChargeState.ENABLE:
36    case BatteryInfo.BatteryChargeState.FULL:
37      batteryStatus = true;
38      break;
39    default:
40      batteryStatus = false;
41      break;
42  }
43  return batteryStatus;
44}
45
46export class BatteryModel {
47  private mBatterySoc: any;
48  private mBatteryCharging: any;
49  private mManager?: CommonEventManager;
50
51  initBatteryModel() {
52    if (this.mManager) {
53      return;
54    }
55    this.mManager = getCommonEventManager(
56      TAG,
57      SUBSCRIBE_INFO,
58      () => this.updateBatteryStatus(),
59      (isSubscribe: boolean) => isSubscribe && this.updateBatteryStatus()
60    );
61    Log.showDebug(TAG, "initBatteryModel");
62    this.mBatterySoc = AppStorage.SetAndLink("batterySoc", 0);
63    this.mBatteryCharging = AppStorage.SetAndLink("batteryCharging", false);
64    this.mManager.subscriberCommonEvent();
65    this.mManager.applyPolicy([POLICY.SCREEN_POLICY]);
66  }
67
68  unInitBatteryModel() {
69    Log.showDebug(TAG, "unInitBatteryModel");
70    this.mManager?.release();
71    this.mManager = undefined;
72  }
73
74  /**
75   * Get battery status and remaining power
76   */
77  private updateBatteryStatus() {
78    Log.showDebug(TAG, "updateBatteryStatus");
79    let batterySoc = BatteryInfo.batterySOC ?? DEFAULT_PROGRESS;
80    let batteryCharging = BatteryInfo.chargingStatus;
81    if (batterySoc <= 0) {
82      // If the result is a negative number, set it as positive number.
83      batterySoc = Math.abs(batterySoc) * Constants.PERCENT_NUMBER;
84    }
85
86    Log.showDebug(TAG, "batterySoc = " + batterySoc);
87
88    // Set the battery status as charging when there is no battery hardware
89    this.mBatterySoc.set(batterySoc);
90    this.mBatteryCharging.set(getChargingStatus(batteryCharging));
91  }
92}
93
94let mBatteryModel = createOrGet(BatteryModel, TAG);
95export default mBatteryModel as BatteryModel;
96