1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.systemui.biometrics.ui.viewmodel
18 
19 import com.android.systemui.biometrics.shared.model.BiometricModality
20 
21 /** Contains metadata about key events that have occurred while biometric prompt is showing. */
22 interface PromptHistory {
23 
24     /** If face authentication has failed at least once. */
25     val faceFailed: Boolean
26 
27     /** If fingerprint authentication has failed at least once. */
28     val fingerprintFailed: Boolean
29 }
30 
31 class PromptHistoryImpl : PromptHistory {
32     private var failures = mutableSetOf<BiometricModality>()
33 
34     override val faceFailed
35         get() = failures.contains(BiometricModality.Face)
36 
37     override val fingerprintFailed
38         get() = failures.contains(BiometricModality.Fingerprint)
39 
40     /** Record a failure event. */
failurenull41     fun failure(modality: BiometricModality) {
42         if (modality != BiometricModality.None) {
43             failures.add(modality)
44         }
45     }
46 }
47