Move WifiWakeupController to NetworkRecommendation

Added ability to enable/disable WifiNotificationController based on
whether the framework is bound to the DefaultNetworkRecommendationProvider.

Bug: 34054262
Test: runtest --path tests/src/com/android/networkrecommendation/WifiWakeupControllerTest.java
Change-Id: Ia3c645bf001dc5bc6ee129bac6d5a24b80e09897

3 files changed, 211 insertions, 0 deletions

diff --git a/src/com/android/networkrecommendation/DefaultNetworkRecommendationService.java b/src/com/android/networkrecommendation/DefaultNetworkRecommendationService.java
index ba2bd64..301e949 100644
--- a/src/com/android/networkrecommendation/DefaultNetworkRecommendationService.java
+++ b/src/com/android/networkrecommendation/DefaultNetworkRecommendationService.java
@@ -72,6 +72,7 @@ public class DefaultNetworkRecommendationService extends Service {
     private Handler mHandler;
     private DefaultNetworkRecommendationProvider mProvider;
     private WifiNotificationController mWifiNotificationController;
+    private WifiWakeupController mWifiWakeupController;
 
     @Override
     public void onCreate() {
@@ -83,16 +84,26 @@ public class DefaultNetworkRecommendationService extends Service {
                 new DefaultNetworkRecommendationProvider.ScoreStorage());
         mWifiNotificationController = new WifiNotificationController(
                 this, mHandler.getLooper(), null);
+        mWifiWakeupController = new WifiWakeupController(
+                this, getContentResolver(), mHandlerThread.getLooper());
     }
 
     @Override
     public IBinder onBind(Intent intent) {
+        mWifiWakeupController.start();
         return mProvider.getBinder();
     }
 
     @Override
+    public boolean onUnbind(Intent intent) {
+        mWifiWakeupController.stop();
+        return super.onUnbind(intent);
+    }
+
+    @Override
     protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
         mProvider.dump(fd, writer, args);
         mWifiNotificationController.dump(fd, writer, args);
+        mWifiWakeupController.dump(fd, writer, args);
     }
 }
diff --git a/src/com/android/networkrecommendation/WifiWakeupController.java b/src/com/android/networkrecommendation/WifiWakeupController.java
new file mode 100644
index 0000000..a2e3e36
--- /dev/null
+++ b/src/com/android/networkrecommendation/WifiWakeupController.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2013 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.networkrecommendation;
+
+import android.content.BroadcastReceiver;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.database.ContentObserver;
+import android.net.wifi.WifiManager;
+import android.os.Handler;
+import android.os.Looper;
+import android.provider.Settings;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+/**
+ * Handles enabling Wi-Fi for the Wi-Fi Wakeup feature.
+ * @hide
+ */
+public class WifiWakeupController {
+    private final Context mContext;
+    private final ContentResolver mContentResolver;
+    private final Handler mHandler;
+    private final AtomicBoolean mStarted;
+    @VisibleForTesting
+    final ContentObserver mContentObserver;
+    @VisibleForTesting
+    boolean mWifiWakeupEnabled;
+
+    WifiWakeupController(Context context, ContentResolver contentResolver, Looper looper) {
+        mContext = context;
+        mContentResolver = contentResolver;
+        mHandler = new Handler(looper);
+        mStarted = new AtomicBoolean(false);
+        mContentObserver = new ContentObserver(mHandler) {
+            @Override
+            public void onChange(boolean selfChange) {
+                mWifiWakeupEnabled = getWifiWakeupEnabledSetting();
+            }
+        };
+    }
+
+    /** Starts {@link WifiWakeupController}. */
+    public void start() {
+        if (!mStarted.compareAndSet(false, true)) {
+            return;
+        }
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
+        filter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
+        mContext.registerReceiver(mBroadcastReceiver, filter, null, mHandler);
+        mContentResolver.registerContentObserver(Settings.Global.getUriFor(
+                Settings.Global.WIFI_WAKEUP_ENABLED), true, mContentObserver);
+        mWifiWakeupEnabled = getWifiWakeupEnabledSetting();
+    }
+
+    /** Stops {@link WifiWakeupController}. */
+    public void stop() {
+        if (!mStarted.compareAndSet(true, false)) {
+            return;
+        }
+        mContext.unregisterReceiver(mBroadcastReceiver);
+        mContentResolver.unregisterContentObserver(mContentObserver);
+    }
+
+    private boolean getWifiWakeupEnabledSetting() {
+        return Settings.Global.getInt(
+                mContentResolver, Settings.Global.WIFI_WAKEUP_ENABLED, 0) == 1;
+    }
+
+    private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
+                handleWifiStateChanged(intent);
+            } else if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
+                handleScanResultsAvailable(intent);
+            }
+        }
+    };
+
+    private void handleWifiStateChanged(Intent intent) {};
+    private void handleScanResultsAvailable(Intent intent) {};
+
+    void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+        pw.println("mStarted " + mStarted.get());
+        pw.println("mWifiWakeupEnabled " + mWifiWakeupEnabled);
+    }
+}
diff --git a/tests/src/com/android/networkrecommendation/WifiWakeupControllerTest.java b/tests/src/com/android/networkrecommendation/WifiWakeupControllerTest.java
new file mode 100644
index 0000000..5ab02b4
--- /dev/null
+++ b/tests/src/com/android/networkrecommendation/WifiWakeupControllerTest.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2016 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.networkrecommendation;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.net.wifi.WifiScanner;
+import android.os.Looper;
+import android.provider.Settings;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+/**
+ * Unit tests for {@link com.android.server.wifi.WifiWakeupController}.
+ */
+@RunWith(AndroidJUnit4.class)
+public class WifiWakeupControllerTest {
+    public static final String TAG = "WifiScanningServiceTest";
+
+    @Mock private Context mContext;
+    @Mock private WifiScanner mWifiScanner;
+    private ContentResolver mContentResolver;
+
+    private WifiWakeupController mWifiWakeupController;
+    private int mWifiWakeupEnabledOriginalValue;
+
+    /** Initialize objects before each test run. */
+    @Before
+    public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+        mContentResolver = InstrumentationRegistry.getTargetContext().getContentResolver();
+
+        mWifiWakeupEnabledOriginalValue =
+                Settings.Global.getInt(mContentResolver, Settings.Global.WIFI_WAKEUP_ENABLED, 0);
+        Settings.Global.putInt(mContentResolver, Settings.Global.WIFI_WAKEUP_ENABLED, 1);
+        mWifiWakeupController = new WifiWakeupController(mContext, mContentResolver,
+                Looper.getMainLooper());
+        mWifiWakeupController.start();
+    }
+
+    @After
+    public void tearDown() {
+        Settings.Global.putInt(mContentResolver, Settings.Global.WIFI_WAKEUP_ENABLED,
+                mWifiWakeupEnabledOriginalValue);
+    }
+
+    /** Test WifiWakeupEnabledSettingObserver enables feature correctly. */
+    @Test
+    public void testEnableWifiWakeup() {
+        assertTrue(mWifiWakeupController.mWifiWakeupEnabled);
+
+        Settings.Global.putInt(mContentResolver, Settings.Global.WIFI_WAKEUP_ENABLED, 0);
+        mWifiWakeupController.mContentObserver.onChange(true);
+        assertFalse(mWifiWakeupController.mWifiWakeupEnabled);
+    }
+
+    /** Test dump() does not crash. */
+    @Test
+    public void testDump() {
+        StringWriter stringWriter = new StringWriter();
+        mWifiWakeupController.dump(
+                new FileDescriptor(), new PrintWriter(stringWriter), new String[0]);
+    }
+}