Add an audit logger for bouncer messages

Runs only in debuggable builds.

Bug: 275600559
Test: adb logcat -s "BouncerMessageAuditLogger:*" shows updates to the bouncer messages
Change-Id: I04f6a54e3f8aba4e36887962f2e14bc120310c7e

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

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.keyguard.bouncer.domain.interactor
+
+import android.os.Build
+import android.util.Log
+import com.android.systemui.CoreStartable
+import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.dagger.qualifiers.Application
+import com.android.systemui.keyguard.bouncer.data.repository.BouncerMessageRepository
+import com.android.systemui.keyguard.bouncer.shared.model.BouncerMessageModel
+import javax.inject.Inject
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.launch
+
+private val TAG = BouncerMessageAuditLogger::class.simpleName!!
+
+/** Logger that echoes bouncer messages state to logcat in debuggable builds. */
+@SysUISingleton
+class BouncerMessageAuditLogger
+@Inject
+constructor(
+    @Application private val scope: CoroutineScope,
+    private val repository: BouncerMessageRepository,
+    private val interactor: BouncerMessageInteractor,
+) : CoreStartable {
+    override fun start() {
+        if (Build.isDebuggable()) {
+            collectAndLog(repository.biometricAuthMessage, "biometricMessage: ")
+            collectAndLog(repository.primaryAuthMessage, "primaryAuthMessage: ")
+            collectAndLog(repository.customMessage, "customMessage: ")
+            collectAndLog(repository.faceAcquisitionMessage, "faceAcquisitionMessage: ")
+            collectAndLog(
+                repository.fingerprintAcquisitionMessage,
+                "fingerprintAcquisitionMessage: "
+            )
+            collectAndLog(repository.authFlagsMessage, "authFlagsMessage: ")
+            collectAndLog(interactor.bouncerMessage, "interactor.bouncerMessage: ")
+        }
+    }
+
+    private fun collectAndLog(flow: Flow<BouncerMessageModel?>, context: String) {
+        scope.launch { flow.collect { Log.d(TAG, context + it) } }
+    }
+}

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

@@ -16,10 +16,14 @@
 
 package com.android.systemui.keyguard.data.repository
 
+import com.android.systemui.CoreStartable
 import com.android.systemui.keyguard.bouncer.data.repository.BouncerMessageRepository
 import com.android.systemui.keyguard.bouncer.data.repository.BouncerMessageRepositoryImpl
+import com.android.systemui.keyguard.bouncer.domain.interactor.BouncerMessageAuditLogger
 import dagger.Binds
 import dagger.Module
+import dagger.multibindings.ClassKey
+import dagger.multibindings.IntoMap
 
 @Module
 interface KeyguardRepositoryModule {
@@ -51,5 +55,10 @@ interface KeyguardRepositoryModule {
     @Binds
     fun bouncerMessageRepository(impl: BouncerMessageRepositoryImpl): BouncerMessageRepository
 
+    @Binds
+    @IntoMap
+    @ClassKey(BouncerMessageAuditLogger::class)
+    fun bind(impl: BouncerMessageAuditLogger): CoreStartable
+
     @Binds fun trustRepository(impl: TrustRepositoryImpl): TrustRepository
 }