chore(deps): Migrate Observable<Void> to Observable<EmptyResponse>

Signed-off-by: Stefan Niedermann <info@niedermann.it>

17 files changed, 70 insertions, 42 deletions

diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/adapters/ServerAdapter.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/adapters/ServerAdapter.java
index 33c781a5d..ec5dc551b 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/adapters/ServerAdapter.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/adapters/ServerAdapter.java
@@ -10,6 +10,7 @@ import android.webkit.MimeTypeMap;
 import androidx.annotation.NonNull;
 import androidx.preference.PreferenceManager;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
 import com.nextcloud.android.sso.api.ParsedResponse;
 import com.nextcloud.android.sso.model.SingleSignOnAccount;
 
@@ -139,7 +140,7 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getDeckAPI().createBoard(board), responseCallback);
     }
 
-    public void deleteBoard(Board board, @NonNull ResponseCallback<Void> responseCallback) {
+    public void deleteBoard(Board board, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().deleteBoard(board.getId()), responseCallback);
     }
@@ -159,7 +160,7 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getDeckAPI().updateAccessControl(remoteBoardId, acl.getId(), acl), responseCallback);
     }
 
-    public void deleteAccessControl(long remoteBoardId, AccessControl acl, @NonNull ResponseCallback<Void> responseCallback) {
+    public void deleteAccessControl(long remoteBoardId, AccessControl acl, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().deleteAccessControl(remoteBoardId, acl.getId(), acl), responseCallback);
     }
@@ -179,7 +180,7 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getDeckAPI().createStack(board.getId(), stack), responseCallback);
     }
 
-    public void deleteStack(Board board, Stack stack, @NonNull ResponseCallback<Void> responseCallback) {
+    public void deleteStack(Board board, Stack stack, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().deleteStack(board.getId(), stack.getId()), responseCallback);
 
@@ -207,7 +208,7 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getDeckAPI().createCard(boardId, stackId, card), responseCallback);
     }
 
-    public void deleteCard(long boardId, long stackId, Card card, @NonNull ResponseCallback<Void> responseCallback) {
+    public void deleteCard(long boardId, long stackId, Card card, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().deleteCard(boardId, stackId, card.getId()), responseCallback);
     }
@@ -217,22 +218,22 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getDeckAPI().updateCard(boardId, stackId, card.getId(), card), responseCallback);
     }
 
-    public void assignUserToCard(long boardId, long stackId, long cardId, String userUID, @NonNull ResponseCallback<Void> responseCallback) {
+    public void assignUserToCard(long boardId, long stackId, long cardId, String userUID, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().assignUserToCard(boardId, stackId, cardId, userUID), responseCallback);
     }
 
-    public void unassignUserFromCard(long boardId, long stackId, long cardId, String userUID, @NonNull ResponseCallback<Void> responseCallback) {
+    public void unassignUserFromCard(long boardId, long stackId, long cardId, String userUID, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().unassignUserFromCard(boardId, stackId, cardId, userUID), responseCallback);
     }
 
-    public void assignLabelToCard(long boardId, long stackId, long cardId, long labelId, @NonNull ResponseCallback<Void> responseCallback) {
+    public void assignLabelToCard(long boardId, long stackId, long cardId, long labelId, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().assignLabelToCard(boardId, stackId, cardId, labelId), responseCallback);
     }
 
-    public void unassignLabelFromCard(long boardId, long stackId, long cardId, long labelId, @NonNull ResponseCallback<Void> responseCallback) {
+    public void unassignLabelFromCard(long boardId, long stackId, long cardId, long labelId, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().unassignLabelFromCard(boardId, stackId, cardId, labelId), responseCallback);
     }
@@ -245,7 +246,7 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getDeckAPI().createLabel(boardId, label), responseCallback);
     }
 
-    public void deleteLabel(long boardId, Label label, @NonNull ResponseCallback<Void> responseCallback) {
+    public void deleteLabel(long boardId, Label label, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().deleteLabel(boardId, label.getId()), responseCallback);
     }
@@ -304,7 +305,7 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getDeckAPI().downloadAttachment(remoteBoardId, remoteStackId, remoteCardId, remoteAttachmentId), responseCallback);
     }
 
-    public void deleteAttachment(Long remoteBoardId, long remoteStackId, long remoteCardId, long remoteAttachmentId, @NonNull ResponseCallback<Void> responseCallback) {
+    public void deleteAttachment(Long remoteBoardId, long remoteStackId, long remoteCardId, long remoteAttachmentId, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getDeckAPI().deleteAttachment(remoteBoardId, remoteStackId, remoteCardId, remoteAttachmentId), responseCallback);
     }
@@ -329,7 +330,7 @@ public class ServerAdapter {
         RequestHelper.request(provider, () -> provider.getNextcloudAPI().updateCommentForCard(comment.getObjectId(), comment.getId(), comment), responseCallback);
     }
 
-    public void deleteCommentForCard(DeckComment comment, @NonNull ResponseCallback<Void> responseCallback) {
+    public void deleteCommentForCard(DeckComment comment, @NonNull ResponseCallback<EmptyResponse> responseCallback) {
         ensureInternetConnection();
         RequestHelper.request(provider, () -> provider.getNextcloudAPI().deleteCommentForCard(comment.getObjectId(), comment.getId()), responseCallback);
     }
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/DeckAPI.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/DeckAPI.java
index 576ccc33b..1f17d2daa 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/DeckAPI.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/DeckAPI.java
@@ -1,6 +1,7 @@
 package it.niedermann.nextcloud.deck.remote.api;
 
 
+import com.nextcloud.android.sso.api.EmptyResponse;
 import com.nextcloud.android.sso.api.ParsedResponse;
 
 import java.util.List;
@@ -54,7 +55,7 @@ public interface DeckAPI {
     Observable<FullBoard> updateBoard(@Path("id") long id, @Body Board board);
 
     @DELETE("v1.0/boards/{id}")
-    Observable<Void> deleteBoard(@Path("id") long id);
+    Observable<EmptyResponse> deleteBoard(@Path("id") long id);
 
     @DELETE("v1.0/boards/{id}/undo_delete")
     Observable<FullBoard> restoreBoard(@Path("id") long id);
@@ -75,7 +76,7 @@ public interface DeckAPI {
     Observable<FullStack> updateStack(@Path("boardId") long boardId, @Path("stackId") long id, @Body Stack stack);
 
     @DELETE("v1.0/boards/{boardId}/stacks/{stackId}")
-    Observable<Void> deleteStack(@Path("boardId") long boardId, @Path("stackId") long id);
+    Observable<EmptyResponse> deleteStack(@Path("boardId") long boardId, @Path("stackId") long id);
 
     @GET("v1.0/boards/{boardId}/stacks/{stackId}")
     Observable<FullStack> getStack(@Path("boardId") long boardId, @Path("stackId") long id, @Header(MODIFIED_SINCE_HEADER) String lastSync);
@@ -97,25 +98,25 @@ public interface DeckAPI {
 
     @FormUrlEncoded
     @PUT("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}/assignLabel")
-    Observable<Void> assignLabelToCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("labelId") long labelId);
+    Observable<EmptyResponse> assignLabelToCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("labelId") long labelId);
 
     @FormUrlEncoded
     @PUT("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}/removeLabel")
-    Observable<Void> unassignLabelFromCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("labelId") long labelId);
+    Observable<EmptyResponse> unassignLabelFromCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("labelId") long labelId);
 
     @FormUrlEncoded
     @PUT("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}/assignUser")
-    Observable<Void> assignUserToCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("userId") String userUID);
+    Observable<EmptyResponse> assignUserToCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("userId") String userUID);
 
     @FormUrlEncoded
     @PUT("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}/unassignUser")
-    Observable<Void> unassignUserFromCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("userId") String userUID);
+    Observable<EmptyResponse> unassignUserFromCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Field("userId") String userUID);
 
     @PUT("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}/reorder")
     Observable<List<FullCard>> moveCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Body Reorder reorder);
 
     @DELETE("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}")
-    Observable<Void> deleteCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId);
+    Observable<EmptyResponse> deleteCard(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId);
 
     /**
      * @see <a href="https://github.com/nextcloud/deck/issues/2874">This endpoint does only return {@link Attachment}s of type {@link EAttachmentType.DECK_FILE}</a>
@@ -140,7 +141,7 @@ public interface DeckAPI {
     Observable<Label> createLabel(@Path("boardId") long boardId, @Body Label label);
 
     @DELETE("v1.0/boards/{boardId}/labels/{labelId}")
-    Observable<Void> deleteLabel(@Path("boardId") long boardId, @Path("labelId") long labelId);
+    Observable<EmptyResponse> deleteLabel(@Path("boardId") long boardId, @Path("labelId") long labelId);
 
 
     // Attachments
@@ -160,7 +161,7 @@ public interface DeckAPI {
     Observable<Attachment> updateAttachment(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Path("attachmentId") long attachmentId, @Part MultipartBody.Part type, @Part MultipartBody.Part attachment);
 
     @DELETE("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}/attachments/{attachmentId}")
-    Observable<Void> deleteAttachment(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Path("attachmentId") long attachmentId);
+    Observable<EmptyResponse> deleteAttachment(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Path("attachmentId") long attachmentId);
 
     @PUT("v1.0/boards/{boardId}/stacks/{stackId}/cards/{cardId}/attachments/{attachmentId}/restore")
     Observable<Attachment> restoreAttachment(@Path("boardId") long boardId, @Path("stackId") long stackId, @Path("cardId") long cardId, @Path("attachmentId") long attachmentId);
@@ -175,6 +176,6 @@ public interface DeckAPI {
     Observable<AccessControl> updateAccessControl(@Path("boardId") long boardId, @Path("aclId") long aclId, @Body AccessControl acl);
 
     @DELETE("v1.0/boards/{boardId}/acl/{aclId}")
-    Observable<Void> deleteAccessControl(@Path("boardId") long boardId, @Path("aclId") long aclId, @Body AccessControl acl);
+    Observable<EmptyResponse> deleteAccessControl(@Path("boardId") long boardId, @Path("aclId") long aclId, @Body AccessControl acl);
 
 }
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/NextcloudServerAPI.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/NextcloudServerAPI.java
index 6f260f31a..2e005d35f 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/NextcloudServerAPI.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/api/NextcloudServerAPI.java
@@ -1,6 +1,7 @@
 package it.niedermann.nextcloud.deck.remote.api;
 
 
+import com.nextcloud.android.sso.api.EmptyResponse;
 import com.nextcloud.android.sso.api.ParsedResponse;
 
 import java.util.List;
@@ -89,5 +90,5 @@ public interface NextcloudServerAPI {
             "Content-Type: application/json;charset=utf-8"
     })
     @DELETE("apps/deck/api/v1.0/cards/{cardId}/comments/{commentId}")
-    Observable<Void> deleteCommentForCard(@Path("cardId") long cardId, @Path("commentId") long commentId);
+    Observable<EmptyResponse> deleteCommentForCard(@Path("cardId") long cardId, @Path("commentId") long commentId);
 }
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/DataPropagationHelper.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/DataPropagationHelper.java
index ac6bdedc2..6b6549ac7 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/DataPropagationHelper.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/DataPropagationHelper.java
@@ -3,6 +3,8 @@ package it.niedermann.nextcloud.deck.remote.helpers;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.util.concurrent.ExecutorService;
 import java.util.function.BiConsumer;
 
@@ -109,7 +111,7 @@ public class DataPropagationHelper {
         }
     }
 
-    public <T extends IRemoteEntity> void deleteEntity(@NonNull final AbstractSyncDataProvider<T> provider, @NonNull T entity, @NonNull ResponseCallback<Void> callback){
+    public <T extends IRemoteEntity> void deleteEntity(@NonNull final AbstractSyncDataProvider<T> provider, @NonNull T entity, @NonNull ResponseCallback<EmptyResponse> callback){
         final long accountId = callback.getAccount().getId();
         // known to server?
         if (entity.getId() != null) {
@@ -122,7 +124,7 @@ public class DataPropagationHelper {
             try {
                 provider.deleteOnServer(serverAdapter, accountId, new ResponseCallback<>(new Account(accountId)) {
                     @Override
-                    public void onResponse(Void response) {
+                    public void onResponse(EmptyResponse response) {
                         executor.submit(() -> {
                             provider.deletePhysicallyInDB(dataBaseAdapter, accountId, entity);
                             callback.onResponse(null);
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/SyncHelper.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/SyncHelper.java
index 846c7cf0e..4028e3ad3 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/SyncHelper.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/SyncHelper.java
@@ -3,6 +3,7 @@ package it.niedermann.nextcloud.deck.remote.helpers;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
 import com.nextcloud.android.sso.exceptions.NextcloudHttpRequestFailedException;
 
 import java.net.HttpURLConnection;
@@ -133,10 +134,10 @@ public class SyncHelper {
         }
     }
 
-    private <T extends IRemoteEntity> ResponseCallback<Void> getDeleteCallback(@NonNull AbstractSyncDataProvider<T> provider, T entity) {
+    private <T extends IRemoteEntity> ResponseCallback<EmptyResponse> getDeleteCallback(@NonNull AbstractSyncDataProvider<T> provider, T entity) {
         return new ResponseCallback<>(account) {
             @Override
-            public void onResponse(Void response) {
+            public void onResponse(EmptyResponse response) {
                 provider.deletePhysicallyInDB(dataBaseAdapter, accountId, entity);
                 provider.goDeeperForUpSync(SyncHelper.this, serverAdapter, dataBaseAdapter, responseCallback);
             }
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AbstractSyncDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AbstractSyncDataProvider.java
index 36eba5704..4347af0b5 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AbstractSyncDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AbstractSyncDataProvider.java
@@ -2,6 +2,8 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
 import androidx.annotation.Nullable;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
@@ -105,7 +107,7 @@ public abstract class AbstractSyncDataProvider<T extends IRemoteEntity> {
 
     public abstract void updateOnServer(ServerAdapter serverAdapter, DataBaseAdapter dataBaseAdapter, long accountId, ResponseCallback<T> callback, T entity);
 
-    public abstract void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, T entity, DataBaseAdapter dataBaseAdapter);
+    public abstract void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, T entity, DataBaseAdapter dataBaseAdapter);
 
     public void childDone(AbstractSyncDataProvider<?> child, ResponseCallback<Boolean> responseCallback, boolean syncChangedSomething) {
         removeChild(child);
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AccessControlDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AccessControlDataProvider.java
index cff7dae89..030669158 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AccessControlDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AccessControlDataProvider.java
@@ -2,6 +2,8 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
 import androidx.annotation.Nullable;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.List;
 import java.util.concurrent.CountDownLatch;
@@ -174,7 +176,7 @@ public class AccessControlDataProvider extends AbstractSyncDataProvider<AccessCo
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, AccessControl entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, AccessControl entity, DataBaseAdapter dataBaseAdapter) {
         serverAdapter.deleteAccessControl(board.getBoard().getId(), entity, callback);
     }
 
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/ActivityDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/ActivityDataProvider.java
index 018ac0282..b4981bf08 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/ActivityDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/ActivityDataProvider.java
@@ -2,6 +2,8 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
 import androidx.annotation.NonNull;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.Collections;
 import java.util.List;
@@ -63,7 +65,7 @@ public class ActivityDataProvider extends AbstractSyncDataProvider<Activity> {
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, Activity entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, Activity entity, DataBaseAdapter dataBaseAdapter) {
         // nope.
     }
 
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AttachmentDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AttachmentDataProvider.java
index 0d8ca5d51..e3f84fdaf 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AttachmentDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/AttachmentDataProvider.java
@@ -3,6 +3,8 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 import android.annotation.SuppressLint;
 import android.net.Uri;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.io.File;
 import java.io.IOException;
 import java.time.Instant;
@@ -101,7 +103,7 @@ public class AttachmentDataProvider extends AbstractSyncDataProvider<Attachment>
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, Attachment entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, Attachment entity, DataBaseAdapter dataBaseAdapter) {
         serverAdapter.deleteAttachment(board.getId(), stack.getId(), card.getId(), entity.getId(), callback);
     }
 
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/BoardDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/BoardDataProvider.java
index cd8350535..a4d29f4bc 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/BoardDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/BoardDataProvider.java
@@ -5,6 +5,7 @@ import android.util.Pair;
 
 import androidx.lifecycle.MutableLiveData;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
 import com.nextcloud.android.sso.api.ParsedResponse;
 
 import java.time.Instant;
@@ -242,7 +243,7 @@ public class BoardDataProvider extends AbstractSyncDataProvider<FullBoard> {
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, FullBoard entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, FullBoard entity, DataBaseAdapter dataBaseAdapter) {
         serverAdapter.deleteBoard(entity.getBoard(), callback);
     }
 
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardDataProvider.java
index b8f3e5000..a1e87897e 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardDataProvider.java
@@ -2,6 +2,7 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
 import android.annotation.SuppressLint;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
 import com.nextcloud.android.sso.exceptions.NextcloudHttpRequestFailedException;
 
 import java.time.Instant;
@@ -203,7 +204,7 @@ public class CardDataProvider extends AbstractSyncDataProvider<FullCard> {
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, FullCard entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, FullCard entity, DataBaseAdapter dataBaseAdapter) {
         serverAdapter.deleteCard(board.getId(), stack.getId(), entity.getCard(), callback);
     }
 
@@ -255,7 +256,7 @@ public class CardDataProvider extends AbstractSyncDataProvider<FullCard> {
                 } else {
                     serverAdapter.unassignLabelFromCard(board.getId(), stack.getId(), changedLabel.getCardId(), changedLabel.getLabelId(), new ResponseCallback<>(account) {
                         @Override
-                        public void onResponse(Void response) {
+                        public void onResponse(EmptyResponse response) {
                             dataBaseAdapter.deleteJoinedLabelForCardPhysicallyByRemoteIDs(account.getId(), changedLabel.getCardId(), changedLabel.getLabelId());
                         }
                     });
@@ -270,7 +271,7 @@ public class CardDataProvider extends AbstractSyncDataProvider<FullCard> {
                         LABEL_JOINS_IN_SYNC.add(changedLabel);
                         serverAdapter.assignLabelToCard(board.getId(), stack.getId(), changedLabel.getCardId(), changedLabel.getLabelId(), new ResponseCallback<>(account) {
                             @Override
-                            public void onResponse(Void response) {
+                            public void onResponse(EmptyResponse response) {
                                 Label label = dataBaseAdapter.getLabelByRemoteIdDirectly(account.getId(), changedLabel.getLabelId());
                                 dataBaseAdapter.setStatusForJoinCardWithLabel(card.getLocalId(), label.getLocalId(), DBStatus.UP_TO_DATE.getId());
                                 LABEL_JOINS_IN_SYNC.remove(changedLabel);
@@ -322,14 +323,14 @@ public class CardDataProvider extends AbstractSyncDataProvider<FullCard> {
             if (changedUser.getStatusEnum() == DBStatus.LOCAL_DELETED) {
                 serverAdapter.unassignUserFromCard(board.getId(), stack.getId(), changedUser.getCardId(), user.getUid(), new ResponseCallback<>(account) {
                     @Override
-                    public void onResponse(Void response) {
+                    public void onResponse(EmptyResponse response) {
                         dataBaseAdapter.deleteJoinedUserForCardPhysicallyByRemoteIDs(account.getId(), changedUser.getCardId(), user.getUid());
                     }
                 });
             } else if (changedUser.getStatusEnum() == DBStatus.LOCAL_EDITED) {
                 serverAdapter.assignUserToCard(board.getId(), stack.getId(), changedUser.getCardId(), user.getUid(), new ResponseCallback<>(account) {
                     @Override
-                    public void onResponse(Void response) {
+                    public void onResponse(EmptyResponse response) {
                         dataBaseAdapter.setStatusForJoinCardWithUser(card.getLocalId(), user.getLocalId(), DBStatus.UP_TO_DATE.getId());
                     }
                 });
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardPropagationDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardPropagationDataProvider.java
index e9028c685..c91ac9740 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardPropagationDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/CardPropagationDataProvider.java
@@ -2,6 +2,8 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
 import android.annotation.SuppressLint;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import it.niedermann.nextcloud.deck.database.DataBaseAdapter;
 import it.niedermann.nextcloud.deck.model.Board;
 import it.niedermann.nextcloud.deck.model.Card;
@@ -83,7 +85,7 @@ public class CardPropagationDataProvider extends CardDataProvider {
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, FullCard entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, FullCard entity, DataBaseAdapter dataBaseAdapter) {
         serverAdapter.deleteCard(board.getId(), stack.getId(), entity.getCard(), callback);
     }
 }
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/DeckCommentsDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/DeckCommentsDataProvider.java
index c366ca1fc..ee0b357f0 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/DeckCommentsDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/DeckCommentsDataProvider.java
@@ -2,6 +2,8 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
 import android.annotation.SuppressLint;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -154,7 +156,7 @@ public class DeckCommentsDataProvider extends AbstractSyncDataProvider<OcsCommen
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, OcsComment entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, OcsComment entity, DataBaseAdapter dataBaseAdapter) {
         DeckComment comment = entity.getSingle();
         comment.setObjectId(card.getId());
         serverAdapter.deleteCommentForCard(comment, callback);
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/LabelDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/LabelDataProvider.java
index 9259391bb..b01ca2b51 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/LabelDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/LabelDataProvider.java
@@ -2,6 +2,8 @@ package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
 import android.annotation.SuppressLint;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.List;
 
@@ -94,7 +96,7 @@ public class LabelDataProvider extends AbstractSyncDataProvider<Label> {
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, Label entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, Label entity, DataBaseAdapter dataBaseAdapter) {
         serverAdapter.deleteLabel(board.getId(), entity, callback);
     }
 
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/OcsProjectDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/OcsProjectDataProvider.java
index 40d661b8b..0f5d28ff6 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/OcsProjectDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/OcsProjectDataProvider.java
@@ -1,5 +1,7 @@
 package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.Collections;
 import java.util.List;
@@ -105,7 +107,7 @@ public class OcsProjectDataProvider extends AbstractSyncDataProvider<OcsProject>
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, OcsProject entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, OcsProject entity, DataBaseAdapter dataBaseAdapter) {
         // Do Nothing
     }
 
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/StackDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/StackDataProvider.java
index 6645390a5..16eea8692 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/StackDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/StackDataProvider.java
@@ -1,5 +1,7 @@
 package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.Collections;
 import java.util.List;
@@ -91,7 +93,7 @@ public class StackDataProvider extends AbstractSyncDataProvider<FullStack> {
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, FullStack entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, FullStack entity, DataBaseAdapter dataBaseAdapter) {
         entity.getStack().setBoardId(board.getId());
         serverAdapter.deleteStack(board.getBoard(), entity.getStack(), callback);
     }
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/UserDataProvider.java b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/UserDataProvider.java
index e644b3a8d..7b322b5e9 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/UserDataProvider.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/remote/helpers/providers/UserDataProvider.java
@@ -1,5 +1,7 @@
 package it.niedermann.nextcloud.deck.remote.helpers.providers;
 
+import com.nextcloud.android.sso.api.EmptyResponse;
+
 import java.time.Instant;
 import java.util.List;
 
@@ -62,7 +64,7 @@ public class UserDataProvider extends AbstractSyncDataProvider<User> {
     }
 
     @Override
-    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<Void> callback, User entity, DataBaseAdapter dataBaseAdapter) {
+    public void deleteOnServer(ServerAdapter serverAdapter, long accountId, ResponseCallback<EmptyResponse> callback, User entity, DataBaseAdapter dataBaseAdapter) {
         //TODO: implement
     }