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1/**
2 * Copyright (c) 2021 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 LogUtil from '../../../../../../../common/utils/src/main/ets/default/baseUtil/LogUtil';
17import ConfigData from '../../../../../../../common/utils/src/main/ets/default/baseUtil/ConfigData';
18import nfcController from '@ohos.nfc.controller';
19
20const TAG = ConfigData.TAG + 'NfcModel: ';
21
22export class NfcModel {
23  private nfcStatus: boolean;
24  private isNfcEnabled: boolean;
25
26  /**
27   * register Nfc Status change
28   * @param callback
29   */
30  registerNfcStatusObserver(callback) {
31    LogUtil.info(TAG + 'start register nfc status observer' );
32    nfcController.on('nfcStateChange', (code) => {
33      if(code == nfcController.NfcState.STATE_OFF || code == nfcController.NfcState.STATE_ON) {
34        if (code == nfcController.NfcState.STATE_ON) {
35          this.isNfcEnabled = true;
36          this.nfcStatus = true;
37        }
38        if (code == nfcController.NfcState.STATE_OFF) {
39          this.isNfcEnabled = false;
40          this.nfcStatus = false;
41        }
42        AppStorage.SetOrCreate('isNfcEnabled', this.isNfcEnabled);
43        AppStorage.SetOrCreate('nfcStatus', this.nfcStatus);
44        LogUtil.info(TAG + 'nfc active status code : ' + code + " isNfcEnabled" + this.isNfcEnabled);
45      }
46      callback(code);
47    })
48    LogUtil.info(TAG + 'end register nfc status observer' );
49  }
50
51  /**
52   * check whether NFC is open
53   * return boolean. true is mean of NFC open, false is mean of NFC close
54   */
55  isNfcOpen(): boolean {
56    const isOpen: boolean = nfcController.isNfcOpen();
57    LogUtil.info(TAG + 'check nfc is open: ' + isOpen);
58    return isOpen;
59  }
60
61  /**
62   * open NFC
63   * return boolean. true is mean of NFC open success, false is mean of NFC open failed
64   */
65  openNfc(): boolean {
66    let enableNfc = nfcController.openNfc();
67    LogUtil.info(TAG + 'open nfc: ' + enableNfc);
68    return enableNfc;
69  }
70
71  /**
72   * close NFC
73   * return boolean. true is mean of NFC close success, false is mean of NFC close failed
74   */
75  closeNfc(): boolean {
76    let disableNfc = nfcController.closeNfc();
77    LogUtil.info(TAG + 'close nfc' + disableNfc);
78    return disableNfc;
79  }
80}
81
82let nfcModel = new NfcModel();
83export default nfcModel as NfcModel;