handle silent delete/delete-all push notifications

do not ignore talk messages (will only be sent if no talk app is installed)
exclude generated Parcelable

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

spotbugs-filter.xml

@@ -1,27 +1,28 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
-
 <FindBugsFilter>
     <Match>
-        <Class name="~.*\.Manifest\$.*"/>
+        <Class name="~.*\.Manifest\$.*" />
+    </Match>
+    <Match>
+        <Class name="~.*\.R\$.*" />
     </Match>
     <Match>
-        <Class name="~.*\.R\$.*"/>
+        <Class name="~.*\.R\$.*" />
     </Match>
     <Match>
-        <Class name="~.*\.R\$.*"/>
+        <Class name="~.*\$\$Parcelable.*" />
     </Match>
 
     <!-- Dagger code is autogenerated. Exclude it from Check. -->
     <Match>
         <Or>
-            <Class name="~.*\.Dagger.*"/>
-            <Class name="~com.nextcloud.client.di\..*_.*"/>
+            <Class name="~.*\.Dagger.*" />
+            <Class name="~com.nextcloud.client.di\..*_.*" />
         </Or>
     </Match>
     <!-- Dagger generated code uses internal APIs -->
     <Match>
-        <Class name="~.*\..*.*Factory"/>
+        <Class name="~.*\..*.*Factory" />
         <Bug pattern="IICU_INCORRECT_INTERNAL_CLASS_USE" />
     </Match>
 
@@ -30,5 +31,5 @@
     <Bug pattern="BAS_BLOATED_ASSIGNMENT_SCOPE" />
 
     <!-- This is unmanageable for now due to large amount of interconnected static state -->
-    <Bug pattern="FCCD_FIND_CLASS_CIRCULAR_DEPENDENCY"/>
+    <Bug pattern="FCCD_FIND_CLASS_CIRCULAR_DEPENDENCY" />
 </FindBugsFilter>

src/main/java/com/owncloud/android/datamodel/DecryptedPushMessage.java

@@ -20,6 +20,8 @@
 
 package com.owncloud.android.datamodel;
 
+import com.google.gson.annotations.SerializedName;
+
 import org.parceler.Parcel;
 
 import lombok.AllArgsConstructor;
@@ -41,4 +43,7 @@ public class DecryptedPushMessage {
     public String subject;
     public String id;
     public int nid;
+    public boolean delete;
+    @SerializedName("delete-all")
+    public boolean deleteAll;
 }

src/main/java/com/owncloud/android/jobs/NotificationJob.java

@@ -95,9 +95,7 @@ public class NotificationJob extends Job {
     private static final String KEY_NOTIFICATION_ACTION_TYPE = "KEY_NOTIFICATION_ACTION_TYPE";
     private static final String PUSH_NOTIFICATION_ID = "PUSH_NOTIFICATION_ID";
     private static final String NUMERIC_NOTIFICATION_ID = "NUMERIC_NOTIFICATION_ID";
-    private static final String APP_SPREED = "spreed";
 
-    private SecureRandom randomId = new SecureRandom();
     private Context context;
     private UserAccountManager accountManager;
 
@@ -110,6 +108,7 @@ public class NotificationJob extends Job {
     @Override
     protected Result onRunJob(@NonNull Params params) {
         context = getContext();
+        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
         PersistableBundleCompat persistableBundleCompat = getParams().getExtras();
         String subject = persistableBundleCompat.getString(KEY_NOTIFICATION_SUBJECT, "");
         String signature = persistableBundleCompat.getString(KEY_NOTIFICATION_SIGNATURE, "");
@@ -135,8 +134,11 @@ public class NotificationJob extends Job {
                         DecryptedPushMessage decryptedPushMessage = gson.fromJson(new String(decryptedSubject),
                                                                                   DecryptedPushMessage.class);
 
-                        // We ignore Spreed messages for now
-                        if (!APP_SPREED.equals(decryptedPushMessage.getApp())) {
+                        if (decryptedPushMessage.delete) {
+                            notificationManager.cancel(decryptedPushMessage.nid);
+                        } else if (decryptedPushMessage.deleteAll) {
+                            notificationManager.cancelAll();
+                        } else {
                             fetchCompleteNotification(signatureVerification.getAccount(), decryptedPushMessage);
                         }
                     }
@@ -152,6 +154,7 @@ public class NotificationJob extends Job {
     }
 
     private void sendNotification(Notification notification, Account account) {
+        SecureRandom randomId = new SecureRandom();
         RichObject file = notification.subjectRichParameters.get("file");
 
         Intent intent;
@@ -234,7 +237,7 @@ public class NotificationJob extends Job {
                 .setContentIntent(pendingIntent).build());
 
         NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
-        notificationManager.notify(pushNotificationId, notificationBuilder.build());
+        notificationManager.notify(notification.getNotificationId(), notificationBuilder.build());
     }
 
     private void fetchCompleteNotification(Account account, DecryptedPushMessage decryptedPushMessage) {