WIP #471 Handling basic notifications in native code

android/app/build.gradle

@@ -80,6 +80,7 @@ flutter {
 dependencies {
     implementation 'com.google.firebase:firebase-analytics:17.2.2'
     implementation 'com.google.firebase:firebase-messaging:20.2.0'
+    implementation 'androidx.work:work-runtime:2.3.4'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

android/app/src/main/AndroidManifest.xml

@@ -48,15 +48,15 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
-<!--
+
         <service
-            android:name=".java.MyFirebaseMessagingService"
+            android:name=".MessagingService"
             android:exported="false">
             <intent-filter>
                 <action android:name="com.google.firebase.MESSAGING_EVENT" />
             </intent-filter>
         </service>
-    -->
+    
         <service
             android:name="io.flutter.plugins.androidalarmmanager.AlarmService"
             android:permission="android.permission.BIND_JOB_SERVICE"

android/app/src/main/java/com/keyboardcrumbs/hassclient/MessagingService.java

@@ -0,0 +1,95 @@
+package com.keyboardcrumbs.hassclient;
+
+import java.util.Map;
+
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.media.RingtoneManager;
+import android.net.Uri;
+import android.os.Build;
+import androidx.core.app.NotificationCompat;
+import android.util.Log;
+
+import com.google.firebase.messaging.FirebaseMessagingService;
+import com.google.firebase.messaging.RemoteMessage;
+
+import androidx.work.OneTimeWorkRequest;
+import androidx.work.WorkManager;
+
+
+public class MessagingService extends FirebaseMessagingService {
+
+    private static final String TAG = "MessagingService";
+
+    @Override
+    public void onMessageReceived(RemoteMessage remoteMessage) {
+        Log.d(TAG, "From: " + remoteMessage.getFrom());
+        Map<String, String> data = remoteMessage.getData();
+        if (data.size() > 0) {
+           Log.d(TAG, "Message data payload: " + data);
+           if (data.containsKey("body") || data.containsKey("title")) {
+                sendNotification(
+                    data.get("body"),
+                    data.get("title"),
+                    data.get("channelId"),
+                    data.get("action1"),
+                    data.get("action2"),
+                    data.get("action3")
+                    );
+           }
+        }
+    }
+
+    @Override
+    public void onNewToken(String token) {
+        Log.d(TAG, "Refreshed token: " + token);
+        //TODO update token
+    }
+
+    private void executeAction() {
+        OneTimeWorkRequest work = new OneTimeWorkRequest.Builder(NotificationActionWorker.class)
+                .build();
+        WorkManager.getInstance().beginWith(work).enqueue();
+    }
+
+    private void sendNotification(String messageBody, String messageTitle, String channelId, String action1, String action2, String action3) {
+        if (channelId == null) {
+            channelId = "ha_notify";
+        }
+        if (messageBody == null) {
+            messageBody = "";
+        }
+        if (messageTitle == null) {
+            messageTitle = "HA Client";
+        }
+        Intent intent = new Intent(this, MainActivity.class);
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
+                PendingIntent.FLAG_ONE_SHOT);
+        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
+        NotificationCompat.Builder notificationBuilder =
+                new NotificationCompat.Builder(this, channelId)
+                        .setSmallIcon(R.drawable.mini_icon)
+                        .setContentTitle(messageTitle)
+                        .setContentText(messageBody)
+                        .setAutoCancel(false)
+                        .setSound(defaultSoundUri)
+                        .setContentIntent(pendingIntent);
+
+        NotificationManager notificationManager =
+                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
+
+        // Since android Oreo notification channel is needed.
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            NotificationChannel channel = new NotificationChannel(channelId,
+                    "Home Assistant notifications",
+                    NotificationManager.IMPORTANCE_DEFAULT);
+            notificationManager.createNotificationChannel(channel);
+        }
+
+        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
+    }
+}

android/app/src/main/java/com/keyboardcrumbs/hassclient/NotificationActionWorker.java

@@ -0,0 +1,25 @@
+package com.keyboardcrumbs.hassclient;
+
+import android.content.Context;
+import androidx.annotation.NonNull;
+import android.util.Log;
+
+import androidx.work.Worker;
+import androidx.work.WorkerParameters;
+
+public class NotificationActionWorker extends Worker {
+
+    private static final String TAG = "NotificationActionWorker";
+
+    public NotificationActionWorker(@NonNull Context appContext, @NonNull WorkerParameters workerParams) {
+        super(appContext, workerParams);
+    }
+
+    @NonNull
+    @Override
+    public Result doWork() {
+        Log.d(TAG, "Performing long running task in scheduled job");
+        // TODO(developer): add long running task here.
+        return Result.success();
+    }
+}