Whenever face auth is locked out, provide the locked out error message in response to face auth triggers

Fixes: 282093034
Test: atest KeyguardFaceAuthInteractorTest
Change-Id: Ibffbeadceb1716a7090c00ef007b961802db2024

packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/SystemUIKeyguardFaceAuthInteractor.kt

@@ -16,9 +16,12 @@
 
 package com.android.systemui.keyguard.domain.interactor
 
+import android.content.Context
+import android.hardware.biometrics.BiometricFaceConstants
 import com.android.keyguard.FaceAuthUiEvent
 import com.android.keyguard.KeyguardUpdateMonitor
 import com.android.systemui.CoreStartable
+import com.android.systemui.R
 import com.android.systemui.bouncer.domain.interactor.AlternateBouncerInteractor
 import com.android.systemui.bouncer.domain.interactor.PrimaryBouncerInteractor
 import com.android.systemui.dagger.SysUISingleton
@@ -27,6 +30,8 @@ import com.android.systemui.dagger.qualifiers.Main
 import com.android.systemui.flags.FeatureFlags
 import com.android.systemui.flags.Flags
 import com.android.systemui.keyguard.data.repository.DeviceEntryFaceAuthRepository
+import com.android.systemui.keyguard.shared.model.AuthenticationStatus
+import com.android.systemui.keyguard.shared.model.ErrorAuthenticationStatus
 import com.android.systemui.keyguard.shared.model.TransitionState
 import com.android.systemui.log.FaceAuthenticationLogger
 import com.android.systemui.util.kotlin.pairwise
@@ -34,7 +39,9 @@ import javax.inject.Inject
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.filterNotNull
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.map
@@ -50,6 +57,7 @@ import kotlinx.coroutines.launch
 class SystemUIKeyguardFaceAuthInteractor
 @Inject
 constructor(
+    private val context: Context,
     @Application private val applicationScope: CoroutineScope,
     @Main private val mainDispatcher: CoroutineDispatcher,
     private val repository: DeviceEntryFaceAuthRepository,
@@ -157,17 +165,28 @@ constructor(
         repository.cancel()
     }
 
+    private val _authenticationStatusOverride = MutableStateFlow<AuthenticationStatus?>(null)
     /** Provide the status of face authentication */
-    override val authenticationStatus = repository.authenticationStatus
+    override val authenticationStatus =
+        merge(_authenticationStatusOverride.filterNotNull(), repository.authenticationStatus)
 
     /** Provide the status of face detection */
     override val detectionStatus = repository.detectionStatus
 
     private fun runFaceAuth(uiEvent: FaceAuthUiEvent, fallbackToDetect: Boolean) {
         if (featureFlags.isEnabled(Flags.FACE_AUTH_REFACTOR)) {
-            applicationScope.launch {
-                faceAuthenticationLogger.authRequested(uiEvent)
-                repository.authenticate(uiEvent, fallbackToDetection = fallbackToDetect)
+            if (repository.isLockedOut.value) {
+                _authenticationStatusOverride.value =
+                    ErrorAuthenticationStatus(
+                        BiometricFaceConstants.FACE_ERROR_LOCKOUT_PERMANENT,
+                        context.resources.getString(R.string.keyguard_face_unlock_unavailable)
+                    )
+            } else {
+                _authenticationStatusOverride.value = null
+                applicationScope.launch {
+                    faceAuthenticationLogger.authRequested(uiEvent)
+                    repository.authenticate(uiEvent, fallbackToDetection = fallbackToDetect)
+                }
             }
         } else {
             faceAuthenticationLogger.ignoredFaceAuthTrigger(

packages/SystemUI/src/com/android/systemui/keyguard/shared/model/FaceAuthenticationModels.kt

@@ -17,6 +17,7 @@
 package com.android.systemui.keyguard.shared.model
 
 import android.hardware.face.FaceManager
+import android.os.SystemClock.elapsedRealtime
 
 /**
  * Authentication status provided by
@@ -38,8 +39,12 @@ data class AcquiredAuthenticationStatus(val acquiredInfo: Int) : AuthenticationS
 object FailedAuthenticationStatus : AuthenticationStatus()
 
 /** Face authentication error message */
-data class ErrorAuthenticationStatus(val msgId: Int, val msg: String? = null) :
-    AuthenticationStatus() {
+data class ErrorAuthenticationStatus(
+    val msgId: Int,
+    val msg: String? = null,
+    // present to break equality check if the same error occurs repeatedly.
+    val createdAt: Long = elapsedRealtime()
+) : AuthenticationStatus() {
     /**
      * Method that checks if [msgId] is a lockout error. A lockout error means that face
      * authentication is locked out.

packages/SystemUI/tests/src/com/android/systemui/keyguard/data/repository/DeviceEntryFaceAuthRepositoryTest.kt

@@ -418,13 +418,9 @@ class DeviceEntryFaceAuthRepositoryTest : SysuiTestCase() {
                 FACE_ERROR_CANCELED,
                 "First auth attempt cancellation completed"
             )
-            assertThat(authStatus())
-                .isEqualTo(
-                    ErrorAuthenticationStatus(
-                        FACE_ERROR_CANCELED,
-                        "First auth attempt cancellation completed"
-                    )
-                )
+            val value = authStatus() as ErrorAuthenticationStatus
+            assertThat(value.msgId).isEqualTo(FACE_ERROR_CANCELED)
+            assertThat(value.msg).isEqualTo("First auth attempt cancellation completed")
 
             faceAuthenticateIsCalled()
             uiEventIsLogged(FACE_AUTH_TRIGGERED_ALTERNATE_BIOMETRIC_BOUNCER_SHOWN)

packages/SystemUI/tests/src/com/android/systemui/keyguard/domain/interactor/KeyguardFaceAuthInteractorTest.kt

@@ -17,6 +17,7 @@
 
 package com.android.systemui.keyguard.domain.interactor
 
+import android.hardware.biometrics.BiometricFaceConstants
 import android.os.Handler
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.SmallTest
@@ -30,6 +31,7 @@ import com.android.systemui.bouncer.domain.interactor.PrimaryBouncerCallbackInte
 import com.android.systemui.bouncer.domain.interactor.PrimaryBouncerInteractor
 import com.android.systemui.bouncer.ui.BouncerView
 import com.android.systemui.classifier.FalsingCollector
+import com.android.systemui.coroutines.collectLastValue
 import com.android.systemui.dump.logcatLogBuffer
 import com.android.systemui.flags.FakeFeatureFlags
 import com.android.systemui.flags.Flags
@@ -39,6 +41,7 @@ import com.android.systemui.keyguard.data.repository.FakeDeviceEntryFaceAuthRepo
 import com.android.systemui.keyguard.data.repository.FakeDeviceEntryFingerprintAuthRepository
 import com.android.systemui.keyguard.data.repository.FakeKeyguardTransitionRepository
 import com.android.systemui.keyguard.data.repository.FakeTrustRepository
+import com.android.systemui.keyguard.shared.model.ErrorAuthenticationStatus
 import com.android.systemui.keyguard.shared.model.KeyguardState
 import com.android.systemui.keyguard.shared.model.TransitionState
 import com.android.systemui.keyguard.shared.model.TransitionStep
@@ -90,6 +93,7 @@ class KeyguardFaceAuthInteractorTest : SysuiTestCase() {
 
         underTest =
             SystemUIKeyguardFaceAuthInteractor(
+                mContext,
                 testScope.backgroundScope,
                 dispatcher,
                 faceAuthRepository,
@@ -143,6 +147,22 @@ class KeyguardFaceAuthInteractorTest : SysuiTestCase() {
                 )
         }
 
+    @Test
+    fun whenFaceIsLockedOutAnyAttemptsToTriggerFaceAuthMustProvideLockoutError() =
+        testScope.runTest {
+            underTest.start()
+            val authenticationStatus = collectLastValue(underTest.authenticationStatus)
+            faceAuthRepository.setLockedOut(true)
+
+            underTest.onDeviceLifted()
+
+            val outputValue = authenticationStatus()!! as ErrorAuthenticationStatus
+            assertThat(outputValue.msgId)
+                .isEqualTo(BiometricFaceConstants.FACE_ERROR_LOCKOUT_PERMANENT)
+            assertThat(outputValue.msg).isEqualTo("Face Unlock unavailable")
+            assertThat(faceAuthRepository.runningAuthRequest.value).isNull()
+        }
+
     @Test
     fun faceAuthIsRequestedWhenLockscreenBecomesVisibleFromAodState() =
         testScope.runTest {

packages/SystemUI/tests/utils/src/com/android/systemui/keyguard/data/repository/FakeDeviceEntryFaceAuthRepository.kt

@@ -41,7 +41,9 @@ class FakeDeviceEntryFaceAuthRepository : DeviceEntryFaceAuthRepository {
     fun setDetectionStatus(status: DetectionStatus) {
         _detectionStatus.value = status
     }
-    override val isLockedOut = MutableStateFlow(false)
+
+    private val _isLockedOut = MutableStateFlow(false)
+    override val isLockedOut = _isLockedOut
     private val _runningAuthRequest = MutableStateFlow<Pair<FaceAuthUiEvent, Boolean>?>(null)
     val runningAuthRequest: StateFlow<Pair<FaceAuthUiEvent, Boolean>?> =
         _runningAuthRequest.asStateFlow()
@@ -56,6 +58,10 @@ class FakeDeviceEntryFaceAuthRepository : DeviceEntryFaceAuthRepository {
         _isAuthRunning.value = true
     }
 
+    fun setLockedOut(value: Boolean) {
+        _isLockedOut.value = value
+    }
+
     override fun cancel() {
         _isAuthRunning.value = false
         _runningAuthRequest.value = null