Unregister push endpoint onUnregistered

app/src/main/java/app/fedilab/android/mastodon/helper/PushNotifications.java

@@ -45,6 +45,23 @@ import retrofit2.converter.gson.GsonConverterFactory;
 
 public class PushNotifications {
 
+    public static void unregisterPushNotifications(Context context, String slug) {
+        new Thread(() -> {
+            String[] slugArray = slug.split("@");
+            BaseAccount accountDb = null;
+            try {
+                accountDb = new Account(context).getUniqAccount(slugArray[0], slugArray[1]);
+            } catch (DBException e) {
+                e.printStackTrace();
+            }
+
+            if (accountDb == null) {
+                return;
+            }
+            MastodonNotificationsService mastodonNotificationsService = init(context, accountDb.instance);
+            mastodonNotificationsService.deletePushsubscription(accountDb.token);
+        });
+    }
 
     public static void registerPushNotifications(Context context, PushEndpoint pushEndpoint, String slug) {
 

app/src/main/java/app/fedilab/android/mastodon/services/PushServiceImpl.java

@@ -56,6 +56,13 @@ public class PushServiceImpl extends PushService {
     }
 
     @Override
-    public void onUnregistered(@NonNull String s) {
+    public void onUnregistered(@NonNull String slug) {
+        Context context = getApplicationContext();
+        if (context != null) {
+            synchronized (this) {
+                PushNotifications
+                        .unregisterPushNotifications(context, slug);
+            }
+        }
     }
 }