Add Instant hotspot preference

- Add Instant hotspot preference to Wi-Fi hotspot settings

- Wait onServiceConnected callback and then getSettingsState

- Use the PendingIntent provided by SharedConnectivitySettingsState to launch Instant hotspot settings

Bug: 268550769
Test: manual test
atest -c WifiTetherSettingsTest
atest -c WifiTetherViewModelTest \
         SharedConnectivityRepositoryTest

Change-Id: I343599e6127d9b1cb4af661dcc80a8683589c7b8

src/com/android/settings/wifi/repository/SharedConnectivityRepository.java

@@ -0,0 +1,184 @@
+/*
+ * 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.settings.wifi.repository;
+
+import android.app.PendingIntent;
+import android.content.Context;
+import android.net.wifi.sharedconnectivity.app.HotspotNetwork;
+import android.net.wifi.sharedconnectivity.app.HotspotNetworkConnectionStatus;
+import android.net.wifi.sharedconnectivity.app.KnownNetwork;
+import android.net.wifi.sharedconnectivity.app.KnownNetworkConnectionStatus;
+import android.net.wifi.sharedconnectivity.app.SharedConnectivityClientCallback;
+import android.net.wifi.sharedconnectivity.app.SharedConnectivityManager;
+import android.net.wifi.sharedconnectivity.app.SharedConnectivitySettingsState;
+import android.os.HandlerThread;
+import android.provider.DeviceConfig;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+import androidx.annotation.WorkerThread;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import com.android.settings.overlay.FeatureFactory;
+
+import java.util.List;
+import java.util.concurrent.Executor;
+
+/**
+ * Shared Connectivity Repository for {@link SharedConnectivityManager}
+ */
+public class SharedConnectivityRepository {
+    private static final String TAG = "SharedConnectivityRepository";
+    private static final String DEVICE_CONFIG_NAMESPACE = "wifi";
+    private static final String DEVICE_CONFIG_KEY = "shared_connectivity_enabled";
+
+    private Context mAppContext;
+    private SharedConnectivityManager mManager;
+    private ClientCallback mClientCallback = new ClientCallback();
+    private HandlerThread mWorkerThread = new HandlerThread(TAG);
+    private Executor mWorkerExecutor = cmd -> mWorkerThread.getThreadHandler().post(cmd);
+    private Runnable mLaunchSettingsRunnable = () -> handleLaunchSettings();
+    @VisibleForTesting
+    MutableLiveData<SharedConnectivitySettingsState> mSettingsState = new MutableLiveData<>();
+
+    public SharedConnectivityRepository(@NonNull Context appContext) {
+        this(appContext,
+                DeviceConfig.getBoolean(DEVICE_CONFIG_NAMESPACE, DEVICE_CONFIG_KEY, false));
+    }
+
+    @VisibleForTesting
+    SharedConnectivityRepository(@NonNull Context appContext, boolean isConfigEnabled) {
+        mAppContext = appContext;
+        if (!isConfigEnabled) {
+            return;
+        }
+        mManager = mAppContext.getSystemService(SharedConnectivityManager.class);
+        if (mManager == null) {
+            Log.w(TAG, "Failed to get SharedConnectivityManager");
+            return;
+        }
+        mWorkerThread.start();
+        mManager.registerCallback(mWorkerExecutor, mClientCallback);
+    }
+
+    /**
+     * Return whether Wi-Fi Shared Connectivity service is available or not.
+     *
+     * @return {@code true} if Wi-Fi Shared Connectivity service is available
+     */
+    public boolean isServiceAvailable() {
+        return mManager != null;
+    }
+
+    /**
+     * Gets SharedConnectivitySettingsState LiveData
+     */
+    public LiveData<SharedConnectivitySettingsState> getSettingsState() {
+        return mSettingsState;
+    }
+
+    /**
+     * Launch Instant Hotspot Settings
+     */
+    public void launchSettings() {
+        mWorkerExecutor.execute(mLaunchSettingsRunnable);
+    }
+
+    @WorkerThread
+    @VisibleForTesting
+    void handleLaunchSettings() {
+        if (mManager == null) {
+            return;
+        }
+        SharedConnectivitySettingsState state = mManager.getSettingsState();
+        log("handleLaunchSettings(), state:" + state);
+        if (state == null) {
+            Log.e(TAG, "No SettingsState to launch Instant Hotspot settings");
+            return;
+        }
+        PendingIntent intent = state.getInstantTetherSettingsPendingIntent();
+        if (intent == null) {
+            Log.e(TAG, "No PendingIntent to launch Instant Hotspot settings");
+            return;
+        }
+        sendSettingsIntent(intent);
+    }
+
+    @WorkerThread
+    @VisibleForTesting
+    void sendSettingsIntent(@NonNull PendingIntent intent) {
+        try {
+            log("sendSettingsIntent(), sent intent:" + intent);
+            intent.send();
+        } catch (PendingIntent.CanceledException e) {
+            Log.e(TAG, "Failed to launch Instant Hotspot settings", e);
+        }
+    }
+
+    @WorkerThread
+    class ClientCallback implements SharedConnectivityClientCallback {
+
+        @Override
+        public void onHotspotNetworkConnectionStatusChanged(HotspotNetworkConnectionStatus status) {
+            log("onHotspotNetworkConnectionStatusChanged(), status:" + status);
+        }
+
+        @Override
+        public void onHotspotNetworksUpdated(List<HotspotNetwork> networks) {
+            log("onHotspotNetworksUpdated(), networks:" + networks);
+        }
+
+        @Override
+        public void onKnownNetworkConnectionStatusChanged(KnownNetworkConnectionStatus status) {
+            log("onKnownNetworkConnectionStatusChanged(), status:" + status);
+        }
+
+        @Override
+        public void onKnownNetworksUpdated(List<KnownNetwork> networks) {
+            log("onKnownNetworksUpdated(), networks:" + networks);
+        }
+
+        @Override
+        public void onRegisterCallbackFailed(Exception e) {
+            Log.e(TAG, "onRegisterCallbackFailed(), e:" + e);
+        }
+
+        @Override
+        public void onServiceConnected() {
+            SharedConnectivitySettingsState state = mManager.getSettingsState();
+            Log.d(TAG, "onServiceConnected(), Manager#getSettingsState:" + state);
+            mSettingsState.postValue(state);
+        }
+
+        @Override
+        public void onServiceDisconnected() {
+            log("onServiceDisconnected()");
+        }
+
+        @Override
+        public void onSharedConnectivitySettingsChanged(SharedConnectivitySettingsState state) {
+            Log.d(TAG, "onSharedConnectivitySettingsChanged(), state:" + state);
+            mSettingsState.postValue(state);
+        }
+    }
+
+    private void log(String msg) {
+        FeatureFactory.getFeatureFactory().getWifiFeatureProvider().verboseLog(TAG, msg);
+    }
+}