dont use FileDownloadWorker in SynchronizeFolderOperation

Signed-off-by: alperozturk <alper_ozturk@proton.me>

app/src/main/java/com/owncloud/android/operations/SynchronizeFolderOperation.java

@@ -15,7 +15,6 @@ import android.content.Intent;
 import android.text.TextUtils;
 
 import com.nextcloud.client.account.User;
-import com.nextcloud.client.jobs.download.FileDownloadHelper;
 import com.owncloud.android.datamodel.FileDataStorageManager;
 import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.datamodel.e2e.v1.decrypted.DecryptedFolderMetadataFileV1;
@@ -40,7 +39,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Vector;
 import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.function.Consumer;
 
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 
@@ -441,8 +439,28 @@ public class SynchronizeFolderOperation extends SyncOperation {
     }
 
     private void startDirectDownloads() {
-        final var fileDownloadHelper = FileDownloadHelper.Companion.instance();
-        mFilesForDirectDownload.forEach(file -> fileDownloadHelper.downloadFile(user, file));
+        try {
+            for (OCFile file: mFilesForDirectDownload) {
+                if (file != null) {
+                    // delay 1 second before each download
+                    Thread.sleep(1000);
+
+                    final var operation = new DownloadFileOperation(user, file, mContext);
+                    var result = operation.execute(getClient());
+
+                    String filename = file.getFileName();
+                    if (filename != null) {
+                        if (result.isSuccess()) {
+                            Log_OC.d(TAG, "startDirectDownloads completed for: " + file.getFileName());
+                        } else {
+                            Log_OC.d(TAG, "startDirectDownloads failed for: " + file.getFileName());
+                        }
+                    }
+                }
+            }
+        } catch (Exception e) {
+            Log_OC.d(TAG, "Exception caught at startDirectDownloads" + e);
+        }
     }
 
     /**