node collections controller

import it.inaf.ia2.vospace.ui.exception.VOSpaceException;

import it.inaf.oats.vospace.datamodel.NodeUtils;

import static it.inaf.oats.vospace.datamodel.NodeUtils.urlEncodePath;

import it.inaf.oats.vospace.datamodel.collections.NodeCollection;

import it.inaf.oats.vospace.datamodel.collections.NodeCollectionsWrapper;

import java.io.IOException;

import java.io.InputStream;

import it.inaf.ia2.aa.data.User;

import it.inaf.ia2.vospace.ui.TokenProvider;

import it.inaf.ia2.vospace.ui.client.VOSpaceClient;

import it.inaf.oats.vospace.datamodel.collections.NodeCollection;

import it.inaf.oats.vospace.datamodel.collections.NodeCollectionsWrapper;

import java.util.List;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.http.MediaType;

import org.springframework.http.ResponseEntity;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RestController;

    private TokenProvider tokenProvider;

    @GetMapping(value = "/collections", produces = MediaType.APPLICATION_JSON_VALUE)

    public ResponseEntity<NodeCollectionsWrapper> listNodeCollections(User principal) 

    public List<NodeCollection> listNodeCollections(User principal) 

            throws Exception

    {

        LOG.debug("listNodeCollections called for user {}", principal.getName());

        NodeCollectionsWrapper ncw =

                client.getNodeCollections(tokenProvider.getToken());

        return ResponseEntity.ok(ncw);

        return ncw.getNodeCollections();

    }

}