package org.gcube.portlets.widgets.ckancontentmoderator.server;

import java.util.ArrayList;
import java.util.List;

import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
import org.gcube.common.scope.api.ScopeProvider;
import org.gcube.datacatalogue.utillibrary.server.cms.CatalogueContentModeratorSystem;
import org.gcube.datacatalogue.utillibrary.shared.ItemStatus;
import org.gcube.datacatalogue.utillibrary.shared.jackan.model.CkanDataset;
import org.gcube.portlets.widgets.ckancontentmoderator.client.CkanContentModeratorService;
import org.gcube.portlets.widgets.ckancontentmoderator.shared.CatalogueDataset;
import org.gcube.vomanagement.usermanagement.model.GCubeUser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

/**
 * The server side implementation of the RPC service.
 */
@SuppressWarnings("serial")
public class CkanContentModeratorServiceImpl extends RemoteServiceServlet implements CkanContentModeratorService {

	private static Logger LOG = LoggerFactory.getLogger(CkanContentModeratorServiceImpl.class);

	@Override
	public boolean isContentModeratorEnabled() {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public void setStatus(String itemId, ItemStatus theStatus) {
		// TODO Auto-generated method stub

	}

	@Override
	public List<CatalogueDataset> getListItemsForStatus(ItemStatus theStatus, int limit, int offset) throws Exception {
		LOG.info("called getListItemsForStatus with [status: " + theStatus + "], [limit: " + limit + "], [offset: "
				+ offset + "]");
		List<CatalogueDataset> datasetList = null;
		try {

			String scope = WsUtil.getCurrentScope(this.getThreadLocalRequest());
			GCubeUser user = WsUtil.getCurrentUser(this.getThreadLocalRequest());
			String token = WsUtil.getCurrentToken(scope, user.getUsername());
			ScopeProvider.instance.set(scope);
			SecurityTokenProvider.instance.set(token);
			CatalogueContentModeratorSystem cmsInstance = CatalogueCMSFactory.getFactory().getCMSPerScope(scope);
			List<CkanDataset> datasets = cmsInstance.getListItemsForStatus(theStatus, limit, offset);
			if (datasets != null) {
				int size = datasets.size();
				datasetList = new ArrayList<CatalogueDataset>(size);
				LOG.info("datasetList for input parameters returned by CMS has size: " + size);
				for (CkanDataset ckanDataset : datasets) {
					CatalogueDataset ds = CatalogueBeansConverter.toCatalogueDataset.apply(ckanDataset);
					LOG.debug("converted dataset is: " + ds);
					datasetList.add(ds);
				}
			}

		} catch (Exception e) {
			LOG.error(e.getMessage(), e);
			throw new Exception(
					"Error occurrend on reading items for status: " + theStatus + ". Caused by: " + e.getMessage());
		}
		
		LOG.info("returning "+datasetList.size()+ " dataset");
		return datasetList;
	}

	@Override
	public void approveItem(String itemId) {
		LOG.info("Called approve Item: " + itemId);

	}

	@Override
	public void rejectItem(String itemId, boolean permanentlyDelete, String reasonMsg) {
		// TODO Auto-generated method stub

	}

	@Override
	public void permanentlyDelete(String itemId) {
		// TODO Auto-generated method stub

	}
}