[SB][Sat] Add demo repo for device-based satellite.

Fixes: 323522792
Test: See below:
1) `adb shell am broadcast -a com.android.systemui.demo -e command
   enter` -> starts demo mode
2) `adb shell am broadcast -a com.android.systemui.demo -e command
   network -e mobile show -e level 0` -> sets mobile to be
   out-of-service
3) Wait 10s
4) Verify dimmed satellite icon appears
5) `adb shell am broadcast -a com.android.systemui.demo -e command
network -e satellite show -e level 4 -e connection connected` -> Verify
full satellite icon appears with level
6) Update the `level` value or `connection` value in the satellite
   command -> Verify satellite icon adjusts appropriately
7) `adb shell am broadcast -a com.android.systemui.demo -e command
   network -e mobile show -e level 1` -> sets mobile to be in-service,
   so verify satellite icon disappears
Test: all unit tests in the statusbar.pipeline.satellite directory
Flag: ACONFIG com.android.internal.telephony.flags.oem_enabled_satellite_flag
NEXTFOOD

Change-Id: I43622852763f6ac1d28446e0afd77a8cb92d26e0
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/DemoStatusIcons.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DemoStatusIcons.java
index 5deb08a7..cff46ab 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/DemoStatusIcons.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DemoStatusIcons.java
@@ -37,6 +37,7 @@
 import com.android.systemui.statusbar.pipeline.mobile.ui.MobileViewLogger;
 import com.android.systemui.statusbar.pipeline.mobile.ui.view.ModernStatusBarMobileView;
 import com.android.systemui.statusbar.pipeline.mobile.ui.viewmodel.MobileIconsViewModel;
+import com.android.systemui.statusbar.pipeline.shared.ui.view.ModernStatusBarView;
 import com.android.systemui.statusbar.pipeline.wifi.ui.view.ModernStatusBarWifiView;
 import com.android.systemui.statusbar.pipeline.wifi.ui.viewmodel.LocationBasedWifiViewModel;
 
@@ -277,6 +278,15 @@
         addView(view, viewIndex, createLayoutParams());
     }
 
+    /** Adds a bindable icon to the demo mode view. */
+    public void addBindableIcon(StatusBarIconHolder.BindableIconHolder holder) {
+        // This doesn't do any correct ordering, and also doesn't check if we already have an
+        // existing icon for the slot. But since we hope to remove this class soon, we won't spend
+        // the time adding that logic.
+        ModernStatusBarView view = holder.getInitializer().createAndBind(mContext);
+        addView(view, createLayoutParams());
+    }
+
     public void onRemoveIcon(StatusIconDisplayable view) {
         if (view.getSlot().equals("wifi")) {
             if (view instanceof ModernStatusBarWifiView) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java
index d7cbe5d..5b82cf7 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java
@@ -54,7 +54,9 @@
 import com.android.systemui.util.Assert;
 
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import javax.inject.Inject;
 
@@ -348,7 +350,11 @@
         private final MobileContextProvider mMobileContextProvider;
         private final LocationBasedWifiViewModel mWifiViewModel;
         private final MobileIconsViewModel mMobileIconsViewModel;
-
+        /**
+         * Stores the list of bindable icons that have been added, keyed on slot name. This ensures
+         * we don't accidentally add the same bindable icon twice.
+         */
+        private final Map<String, BindableIconHolder> mBindableIcons = new HashMap<>();
         protected final Context mContext;
         protected int mIconSize;
         // Whether or not these icons show up in dumpsys
@@ -460,8 +466,12 @@
          * ViewBinder to control its visual state.
          */
         protected StatusIconDisplayable addBindableIcon(BindableIconHolder holder, int index) {
+            mBindableIcons.put(holder.getSlot(), holder);
             ModernStatusBarView view = holder.getInitializer().createAndBind(mContext);
             mGroup.addView(view, index, onCreateLayoutParams());
+            if (mIsInDemoMode) {
+                mDemoStatusIcons.addBindableIcon(holder);
+            }
             return view;
         }
 
@@ -572,6 +582,9 @@
             if (mDemoStatusIcons == null) {
                 mDemoStatusIcons = createDemoStatusIcons();
                 mDemoStatusIcons.addModernWifiView(mWifiViewModel);
+                for (BindableIconHolder holder : mBindableIcons.values()) {
+                    mDemoStatusIcons.addBindableIcon(holder);
+                }
             }
             mDemoStatusIcons.onDemoModeStarted();
         }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconControllerImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconControllerImpl.java
index 4f148f1..ad2ea2f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconControllerImpl.java
@@ -212,7 +212,8 @@
         StatusBarIconHolder existingHolder = mStatusBarIconList.getIconHolder(icon.getSlot(), 0);
         // Expected to be null
         if (existingHolder == null) {
-            BindableIconHolder bindableIcon = new BindableIconHolder(icon.getInitializer());
+            BindableIconHolder bindableIcon =
+                    new BindableIconHolder(icon.getInitializer(), icon.getSlot());
             setIcon(icon.getSlot(), bindableIcon);
         } else {
             Log.e(TAG, "addBindableIcon called, but icon has already been added. Ignoring");
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconHolder.kt b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconHolder.kt
index bef0b28..08a890d 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconHolder.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconHolder.kt
@@ -169,16 +169,19 @@
      * StatusBarIconController will register all available bindable icons on init (see
      * [BindableIconsRepository]), and will ignore any call to setIcon for these.
      *
-     * [initializer] a view creator that can bind the relevant view models to the created view.
+     * @property initializer a view creator that can bind the relevant view models to the created
+     *   view.
+     * @property slot the name of the slot that this holder is used for.
      */
-    class BindableIconHolder(val initializer: ModernStatusBarViewCreator) : StatusBarIconHolder() {
+    class BindableIconHolder(val initializer: ModernStatusBarViewCreator, val slot: String) :
+        StatusBarIconHolder() {
         override var type: Int = TYPE_BINDABLE
 
         /** This is unused, as bindable icons use their own view binders to control visibility */
         override var isVisible: Boolean = true
 
         override fun toString(): String {
-            return ("StatusBarIconHolder(type=BINDABLE)")
+            return ("StatusBarIconHolder(type=BINDABLE, slot=$slot)")
         }
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/dagger/StatusBarPipelineModule.kt b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/dagger/StatusBarPipelineModule.kt
index 4129b3a..5d91c7f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/dagger/StatusBarPipelineModule.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/dagger/StatusBarPipelineModule.kt
@@ -41,6 +41,8 @@
 import com.android.systemui.statusbar.pipeline.mobile.util.SubscriptionManagerProxy
 import com.android.systemui.statusbar.pipeline.mobile.util.SubscriptionManagerProxyImpl
 import com.android.systemui.statusbar.pipeline.satellite.data.DeviceBasedSatelliteRepository
+import com.android.systemui.statusbar.pipeline.satellite.data.DeviceBasedSatelliteRepositorySwitcher
+import com.android.systemui.statusbar.pipeline.satellite.data.RealDeviceBasedSatelliteRepository
 import com.android.systemui.statusbar.pipeline.satellite.data.prod.DeviceBasedSatelliteRepositoryImpl
 import com.android.systemui.statusbar.pipeline.shared.data.repository.ConnectivityRepository
 import com.android.systemui.statusbar.pipeline.shared.data.repository.ConnectivityRepositoryImpl
@@ -81,8 +83,13 @@
     abstract fun connectivityRepository(impl: ConnectivityRepositoryImpl): ConnectivityRepository
 
     @Binds
-    abstract fun deviceBasedSatelliteRepository(
+    abstract fun realDeviceBasedSatelliteRepository(
         impl: DeviceBasedSatelliteRepositoryImpl
+    ): RealDeviceBasedSatelliteRepository
+
+    @Binds
+    abstract fun deviceBasedSatelliteRepository(
+        impl: DeviceBasedSatelliteRepositorySwitcher
     ): DeviceBasedSatelliteRepository
 
     @Binds abstract fun wifiRepository(impl: WifiRepositorySwitcher): WifiRepository
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepository.kt b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepository.kt
index ad8b810..d38e834 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepository.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepository.kt
@@ -17,7 +17,7 @@
 package com.android.systemui.statusbar.pipeline.satellite.data
 
 import com.android.systemui.statusbar.pipeline.satellite.shared.model.SatelliteConnectionState
-import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.StateFlow
 
 /**
  * Device-based satellite refers to the capability of a device to connect directly to a satellite
@@ -26,12 +26,22 @@
  */
 interface DeviceBasedSatelliteRepository {
     /** See [SatelliteConnectionState] for available states */
-    val connectionState: Flow<SatelliteConnectionState>
+    val connectionState: StateFlow<SatelliteConnectionState>
 
     /** 0-4 level (similar to wifi and mobile) */
     // @IntRange(from = 0, to = 4)
-    val signalStrength: Flow<Int>
+    val signalStrength: StateFlow<Int>
 
     /** Clients must observe this property, as device-based satellite is location-dependent */
-    val isSatelliteAllowedForCurrentLocation: Flow<Boolean>
+    val isSatelliteAllowedForCurrentLocation: StateFlow<Boolean>
 }
+
+/**
+ * A no-op interface used for Dagger bindings.
+ *
+ * [DeviceBasedSatelliteRepositorySwitcher] needs to inject both the real repository and the demo
+ * mode repository, both of which implement the [DeviceBasedSatelliteRepository] interface. To help
+ * distinguish the two for the switcher, [DeviceBasedSatelliteRepositoryImpl] will implement this
+ * [RealDeviceBasedSatelliteRepository] interface.
+ */
+interface RealDeviceBasedSatelliteRepository : DeviceBasedSatelliteRepository
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepositorySwitcher.kt b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepositorySwitcher.kt
new file mode 100644
index 0000000..6b1bc65
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepositorySwitcher.kt
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2024 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.statusbar.pipeline.satellite.data
+
+import android.os.Bundle
+import androidx.annotation.VisibleForTesting
+import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.dagger.qualifiers.Application
+import com.android.systemui.demomode.DemoMode
+import com.android.systemui.demomode.DemoModeController
+import com.android.systemui.statusbar.pipeline.satellite.data.demo.DemoDeviceBasedSatelliteRepository
+import com.android.systemui.statusbar.pipeline.satellite.shared.model.SatelliteConnectionState
+import com.android.systemui.utils.coroutines.flow.conflatedCallbackFlow
+import javax.inject.Inject
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.mapLatest
+import kotlinx.coroutines.flow.stateIn
+
+/**
+ * A provider for the [DeviceBasedSatelliteRepository] interface that can choose between the Demo
+ * and Prod concrete implementations at runtime. It works by defining a base flow, [activeRepo],
+ * which switches based on the latest information from [DemoModeController], and switches every flow
+ * in the interface to point to the currently-active provider. This allows us to put the demo mode
+ * interface in its own repository, completely separate from the real version, while still using all
+ * of the prod implementations for the rest of the pipeline (interactors and onward). Looks
+ * something like this:
+ * ```
+ * RealRepository
+ *                 │
+ *                 ├──►RepositorySwitcher──►RealInteractor──►RealViewModel
+ *                 │
+ * DemoRepository
+ * ```
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+@SysUISingleton
+class DeviceBasedSatelliteRepositorySwitcher
+@Inject
+constructor(
+    private val realImpl: RealDeviceBasedSatelliteRepository,
+    private val demoImpl: DemoDeviceBasedSatelliteRepository,
+    private val demoModeController: DemoModeController,
+    @Application scope: CoroutineScope,
+) : DeviceBasedSatelliteRepository {
+    private val isDemoMode =
+        conflatedCallbackFlow {
+                val callback =
+                    object : DemoMode {
+                        override fun dispatchDemoCommand(command: String?, args: Bundle?) {
+                            // Don't care
+                        }
+
+                        override fun onDemoModeStarted() {
+                            demoImpl.startProcessingCommands()
+                            trySend(true)
+                        }
+
+                        override fun onDemoModeFinished() {
+                            demoImpl.stopProcessingCommands()
+                            trySend(false)
+                        }
+                    }
+
+                demoModeController.addCallback(callback)
+                awaitClose { demoModeController.removeCallback(callback) }
+            }
+            .stateIn(scope, SharingStarted.WhileSubscribed(), demoModeController.isInDemoMode)
+
+    @VisibleForTesting
+    val activeRepo: StateFlow<DeviceBasedSatelliteRepository> =
+        isDemoMode
+            .mapLatest { isDemoMode ->
+                if (isDemoMode) {
+                    demoImpl
+                } else {
+                    realImpl
+                }
+            }
+            .stateIn(scope, SharingStarted.WhileSubscribed(), realImpl)
+
+    override val connectionState: StateFlow<SatelliteConnectionState> =
+        activeRepo
+            .flatMapLatest { it.connectionState }
+            .stateIn(scope, SharingStarted.WhileSubscribed(), realImpl.connectionState.value)
+
+    override val signalStrength: StateFlow<Int> =
+        activeRepo
+            .flatMapLatest { it.signalStrength }
+            .stateIn(scope, SharingStarted.WhileSubscribed(), realImpl.signalStrength.value)
+
+    override val isSatelliteAllowedForCurrentLocation: StateFlow<Boolean> =
+        activeRepo
+            .flatMapLatest { it.isSatelliteAllowedForCurrentLocation }
+            .stateIn(
+                scope,
+                SharingStarted.WhileSubscribed(),
+                realImpl.isSatelliteAllowedForCurrentLocation.value
+            )
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteDataSource.kt b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteDataSource.kt
new file mode 100644
index 0000000..fecd7fe
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteDataSource.kt
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2024 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.statusbar.pipeline.satellite.data.demo
+
+import android.os.Bundle
+import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.dagger.qualifiers.Application
+import com.android.systemui.demomode.DemoMode
+import com.android.systemui.demomode.DemoModeController
+import com.android.systemui.statusbar.pipeline.satellite.shared.model.SatelliteConnectionState
+import javax.inject.Inject
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.shareIn
+
+/**
+ * Reads the incoming demo commands and emits the satellite-related commands to [satelliteEvents]
+ * for the demo repository to consume.
+ */
+@SysUISingleton
+class DemoDeviceBasedSatelliteDataSource
+@Inject
+constructor(
+    demoModeController: DemoModeController,
+    @Application scope: CoroutineScope,
+) {
+    private val demoCommandStream = demoModeController.demoFlowForCommand(DemoMode.COMMAND_NETWORK)
+    private val _satelliteCommands =
+        demoCommandStream.map { args -> args.toSatelliteEvent() }.filterNotNull()
+
+    /** A flow that emits the demo commands that are satellite-related. */
+    val satelliteEvents = _satelliteCommands.shareIn(scope, SharingStarted.WhileSubscribed())
+
+    private fun Bundle.toSatelliteEvent(): DemoSatelliteEvent? {
+        val satellite = getString("satellite") ?: return null
+        if (satellite != "show") {
+            return null
+        }
+
+        return DemoSatelliteEvent(
+            connectionState = getString("connection").toConnectionState(),
+            signalStrength = getString("level")?.toInt() ?: 0,
+        )
+    }
+
+    data class DemoSatelliteEvent(
+        val connectionState: SatelliteConnectionState,
+        val signalStrength: Int,
+    )
+
+    private fun String?.toConnectionState(): SatelliteConnectionState {
+        if (this == null) {
+            return SatelliteConnectionState.Unknown
+        }
+        return try {
+            // Lets people use "connected" on the command line and have it be correctly converted
+            // to [SatelliteConnectionState.Connected] with a capital C.
+            SatelliteConnectionState.valueOf(this.replaceFirstChar { it.uppercase() })
+        } catch (e: IllegalArgumentException) {
+            SatelliteConnectionState.Unknown
+        }
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteRepository.kt b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteRepository.kt
new file mode 100644
index 0000000..56034f0
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteRepository.kt
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2024 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.statusbar.pipeline.satellite.data.demo
+
+import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.dagger.qualifiers.Application
+import com.android.systemui.statusbar.pipeline.satellite.data.DeviceBasedSatelliteRepository
+import com.android.systemui.statusbar.pipeline.satellite.shared.model.SatelliteConnectionState
+import javax.inject.Inject
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.launch
+
+/** A satellite repository that represents the latest satellite values sent via demo mode. */
+@SysUISingleton
+class DemoDeviceBasedSatelliteRepository
+@Inject
+constructor(
+    private val dataSource: DemoDeviceBasedSatelliteDataSource,
+    @Application private val scope: CoroutineScope,
+) : DeviceBasedSatelliteRepository {
+    private var demoCommandJob: Job? = null
+
+    override val connectionState = MutableStateFlow(SatelliteConnectionState.Unknown)
+    override val signalStrength = MutableStateFlow(0)
+    override val isSatelliteAllowedForCurrentLocation = MutableStateFlow(true)
+
+    fun startProcessingCommands() {
+        demoCommandJob =
+            scope.launch { dataSource.satelliteEvents.collect { event -> processEvent(event) } }
+    }
+
+    fun stopProcessingCommands() {
+        demoCommandJob?.cancel()
+    }
+
+    private fun processEvent(event: DemoDeviceBasedSatelliteDataSource.DemoSatelliteEvent) {
+        connectionState.value = event.connectionState
+        signalStrength.value = event.signalStrength
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImpl.kt b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImpl.kt
index 3e3ea85..0739b836 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImpl.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImpl.kt
@@ -31,7 +31,7 @@
 import com.android.systemui.log.core.MessageInitializer
 import com.android.systemui.log.core.MessagePrinter
 import com.android.systemui.statusbar.pipeline.dagger.OemSatelliteInputLog
-import com.android.systemui.statusbar.pipeline.satellite.data.DeviceBasedSatelliteRepository
+import com.android.systemui.statusbar.pipeline.satellite.data.RealDeviceBasedSatelliteRepository
 import com.android.systemui.statusbar.pipeline.satellite.data.prod.SatelliteSupport.Companion.whenSupported
 import com.android.systemui.statusbar.pipeline.satellite.data.prod.SatelliteSupport.NotSupported
 import com.android.systemui.statusbar.pipeline.satellite.data.prod.SatelliteSupport.Supported
@@ -50,12 +50,14 @@
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.suspendCancellableCoroutine
 import kotlinx.coroutines.withContext
@@ -134,7 +136,7 @@
     @Application private val scope: CoroutineScope,
     @OemSatelliteInputLog private val logBuffer: LogBuffer,
     private val systemClock: SystemClock,
-) : DeviceBasedSatelliteRepository {
+) : RealDeviceBasedSatelliteRepository {
 
     private val satelliteManager: SatelliteManager?
 
@@ -200,10 +202,12 @@
     }
 
     override val connectionState =
-        satelliteSupport.whenSupported(
-            supported = ::connectionStateFlow,
-            orElse = flowOf(SatelliteConnectionState.Off)
-        )
+        satelliteSupport
+            .whenSupported(
+                supported = ::connectionStateFlow,
+                orElse = flowOf(SatelliteConnectionState.Off)
+            )
+            .stateIn(scope, SharingStarted.Eagerly, SatelliteConnectionState.Off)
 
     // By using the SupportedSatelliteManager here, we expect registration never to fail
     private fun connectionStateFlow(sm: SupportedSatelliteManager): Flow<SatelliteConnectionState> =
@@ -227,7 +231,9 @@
             .flowOn(bgDispatcher)
 
     override val signalStrength =
-        satelliteSupport.whenSupported(supported = ::signalStrengthFlow, orElse = flowOf(0))
+        satelliteSupport
+            .whenSupported(supported = ::signalStrengthFlow, orElse = flowOf(0))
+            .stateIn(scope, SharingStarted.Eagerly, 0)
 
     // By using the SupportedSatelliteManager here, we expect registration never to fail
     private fun signalStrengthFlow(sm: SupportedSatelliteManager) =
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepositorySwitcherTest.kt b/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepositorySwitcherTest.kt
new file mode 100644
index 0000000..7ca3b1c
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/DeviceBasedSatelliteRepositorySwitcherTest.kt
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2024 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.statusbar.pipeline.satellite.data
+
+import android.telephony.satellite.SatelliteManager
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.demomode.DemoMode
+import com.android.systemui.demomode.DemoModeController
+import com.android.systemui.log.core.FakeLogBuffer
+import com.android.systemui.statusbar.pipeline.satellite.data.demo.DemoDeviceBasedSatelliteDataSource
+import com.android.systemui.statusbar.pipeline.satellite.data.demo.DemoDeviceBasedSatelliteRepository
+import com.android.systemui.statusbar.pipeline.satellite.data.prod.DeviceBasedSatelliteRepositoryImpl
+import com.android.systemui.statusbar.pipeline.satellite.shared.model.SatelliteConnectionState
+import com.android.systemui.util.mockito.kotlinArgumentCaptor
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.util.mockito.whenever
+import com.android.systemui.util.time.FakeSystemClock
+import com.google.common.truth.Truth.assertThat
+import java.util.Optional
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.test.StandardTestDispatcher
+import kotlinx.coroutines.test.TestScope
+import kotlinx.coroutines.test.runCurrent
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+import org.mockito.Mockito.verify
+
+@SmallTest
+class DeviceBasedSatelliteRepositorySwitcherTest : SysuiTestCase() {
+    private val testDispatcher = StandardTestDispatcher()
+    private val testScope = TestScope(testDispatcher)
+
+    private val demoModeController =
+        mock<DemoModeController>().apply { whenever(this.isInDemoMode).thenReturn(false) }
+    private val satelliteManager = mock<SatelliteManager>()
+    private val systemClock = FakeSystemClock()
+
+    private val realImpl =
+        DeviceBasedSatelliteRepositoryImpl(
+            Optional.of(satelliteManager),
+            testDispatcher,
+            testScope.backgroundScope,
+            FakeLogBuffer.Factory.create(),
+            systemClock,
+        )
+    private val demoDataSource =
+        mock<DemoDeviceBasedSatelliteDataSource>().also {
+            whenever(it.satelliteEvents)
+                .thenReturn(
+                    MutableStateFlow(
+                        DemoDeviceBasedSatelliteDataSource.DemoSatelliteEvent(
+                            connectionState = SatelliteConnectionState.Unknown,
+                            signalStrength = 0,
+                        )
+                    )
+                )
+        }
+    private val demoImpl =
+        DemoDeviceBasedSatelliteRepository(demoDataSource, testScope.backgroundScope)
+
+    private val underTest =
+        DeviceBasedSatelliteRepositorySwitcher(
+            realImpl,
+            demoImpl,
+            demoModeController,
+            testScope.backgroundScope,
+        )
+
+    @OptIn(ExperimentalCoroutinesApi::class)
+    @Test
+    fun switcherActiveRepo_updatesWhenDemoModeChanges() =
+        testScope.runTest {
+            assertThat(underTest.activeRepo.value).isSameInstanceAs(realImpl)
+
+            val latest by collectLastValue(underTest.activeRepo)
+            runCurrent()
+
+            startDemoMode()
+
+            assertThat(latest).isSameInstanceAs(demoImpl)
+
+            finishDemoMode()
+
+            assertThat(latest).isSameInstanceAs(realImpl)
+        }
+
+    private fun startDemoMode() {
+        whenever(demoModeController.isInDemoMode).thenReturn(true)
+        getDemoModeCallback().onDemoModeStarted()
+    }
+
+    private fun finishDemoMode() {
+        whenever(demoModeController.isInDemoMode).thenReturn(false)
+        getDemoModeCallback().onDemoModeFinished()
+    }
+
+    private fun getDemoModeCallback(): DemoMode {
+        val captor = kotlinArgumentCaptor<DemoMode>()
+        verify(demoModeController).addCallback(captor.capture())
+        return captor.value
+    }
+}
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteRepositoryTest.kt b/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteRepositoryTest.kt
new file mode 100644
index 0000000..f77fd19
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/demo/DemoDeviceBasedSatelliteRepositoryTest.kt
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2024 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.statusbar.pipeline.satellite.data.demo
+
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.statusbar.pipeline.satellite.shared.model.SatelliteConnectionState
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.util.mockito.whenever
+import com.google.common.truth.Truth.assertThat
+import kotlin.test.Test
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.test.StandardTestDispatcher
+import kotlinx.coroutines.test.TestScope
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+
+@SmallTest
+class DemoDeviceBasedSatelliteRepositoryTest : SysuiTestCase() {
+
+    private val testDispatcher = StandardTestDispatcher()
+    private val testScope = TestScope(testDispatcher)
+
+    private val fakeSatelliteEvents =
+        MutableStateFlow(
+            DemoDeviceBasedSatelliteDataSource.DemoSatelliteEvent(
+                connectionState = SatelliteConnectionState.Unknown,
+                signalStrength = 0,
+            )
+        )
+
+    private lateinit var dataSource: DemoDeviceBasedSatelliteDataSource
+
+    private lateinit var underTest: DemoDeviceBasedSatelliteRepository
+
+    @Before
+    fun setUp() {
+        dataSource =
+            mock<DemoDeviceBasedSatelliteDataSource>().also {
+                whenever(it.satelliteEvents).thenReturn(fakeSatelliteEvents)
+            }
+
+        underTest = DemoDeviceBasedSatelliteRepository(dataSource, testScope.backgroundScope)
+    }
+
+    @Test
+    fun startProcessing_getsNewUpdates() =
+        testScope.runTest {
+            val latestConnection by collectLastValue(underTest.connectionState)
+            val latestSignalStrength by collectLastValue(underTest.signalStrength)
+
+            underTest.startProcessingCommands()
+
+            fakeSatelliteEvents.value =
+                DemoDeviceBasedSatelliteDataSource.DemoSatelliteEvent(
+                    connectionState = SatelliteConnectionState.On,
+                    signalStrength = 3,
+                )
+
+            assertThat(latestConnection).isEqualTo(SatelliteConnectionState.On)
+            assertThat(latestSignalStrength).isEqualTo(3)
+
+            fakeSatelliteEvents.value =
+                DemoDeviceBasedSatelliteDataSource.DemoSatelliteEvent(
+                    connectionState = SatelliteConnectionState.Connected,
+                    signalStrength = 4,
+                )
+
+            assertThat(latestConnection).isEqualTo(SatelliteConnectionState.Connected)
+            assertThat(latestSignalStrength).isEqualTo(4)
+        }
+
+    @Test
+    fun stopProcessing_stopsGettingUpdates() =
+        testScope.runTest {
+            val latestConnection by collectLastValue(underTest.connectionState)
+            val latestSignalStrength by collectLastValue(underTest.signalStrength)
+
+            underTest.startProcessingCommands()
+
+            fakeSatelliteEvents.value =
+                DemoDeviceBasedSatelliteDataSource.DemoSatelliteEvent(
+                    connectionState = SatelliteConnectionState.On,
+                    signalStrength = 3,
+                )
+            assertThat(latestConnection).isEqualTo(SatelliteConnectionState.On)
+            assertThat(latestSignalStrength).isEqualTo(3)
+
+            underTest.stopProcessingCommands()
+
+            // WHEN new values are emitted
+            fakeSatelliteEvents.value =
+                DemoDeviceBasedSatelliteDataSource.DemoSatelliteEvent(
+                    connectionState = SatelliteConnectionState.Connected,
+                    signalStrength = 4,
+                )
+
+            // THEN they're not collected because we stopped processing commands, so the old values
+            // are still present
+            assertThat(latestConnection).isEqualTo(SatelliteConnectionState.On)
+            assertThat(latestSignalStrength).isEqualTo(3)
+        }
+}
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImplTest.kt b/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImplTest.kt
index 77e48bff..6b0ad4b 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImplTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/satellite/data/prod/DeviceBasedSatelliteRepositoryImplTest.kt
@@ -156,7 +156,7 @@
                     verify(satelliteManager).registerForNtnSignalStrengthChanged(any(), capture())
                 }
 
-            assertThat(latest).isNull()
+            assertThat(latest).isEqualTo(0)
 
             callback.onNtnSignalStrengthChanged(NtnSignalStrength(1))
             assertThat(latest).isEqualTo(1)