/**
 * 
 */
package org.gcube.portlets.user.sdmxexportwizardtd.server;

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

import org.gcube.datapublishing.sdmx.api.model.SDMXRegistryDescriptor;
import org.gcube.datapublishing.sdmx.api.model.SDMXRegistryInterfaceType;
import org.gcube.datapublishing.sdmx.api.registry.SDMXRegistryClient;
import org.gcube.datapublishing.sdmx.api.registry.SDMXRegistryClient.Detail;
import org.gcube.datapublishing.sdmx.api.registry.SDMXRegistryClient.References;
import org.gcube.datapublishing.sdmx.impl.model.GCubeSDMXRegistryDescriptor;
import org.gcube.datapublishing.sdmx.impl.model.SDMXRegistryDescriptorImpl;
import org.gcube.datapublishing.sdmx.impl.registry.FusionRegistryClient;
import org.gcube.portlets.user.sdmxexportwizardtd.shared.Agencies;
import org.gcube.portlets.user.sdmxexportwizardtd.shared.Codelist;
import org.gcube.portlets.user.sdmxexportwizardtd.shared.Dataset;
import org.sdmxsource.sdmx.api.model.beans.SdmxBeans;
import org.sdmxsource.sdmx.api.model.beans.base.AgencyBean;
import org.sdmxsource.sdmx.api.model.beans.codelist.CodelistBean;
import org.sdmxsource.sdmx.api.model.beans.datastructure.DataflowBean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 
 * @author "Giancarlo Panichi" <a
 *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
 * 
 */
public class SDMXClient {

	public static enum TYPE {
		INTERNAL, ANOTHER
	}

	protected static Logger logger = LoggerFactory.getLogger(SDMXClient.class);

	protected SDMXRegistryClient client;
	protected TYPE type;
	protected String url;

	public SDMXClient() {
		type = TYPE.INTERNAL;
		url = null;
		SDMXRegistryDescriptor descriptor = new GCubeSDMXRegistryDescriptor();
		client = new FusionRegistryClient(descriptor);

	}

	public SDMXClient(String url) {
		type = TYPE.ANOTHER;
		this.url = url;
		SDMXRegistryDescriptorImpl descriptor = new SDMXRegistryDescriptorImpl();
		descriptor.setUrl(SDMXRegistryInterfaceType.RESTV2_1, url);
		client = new FusionRegistryClient(descriptor);
	}

	public List<Codelist> getAllCodelists() throws Exception {
		SdmxBeans beans = client.getCodelist("all", "all", "all",
				Detail.allstubs, References.none);
		List<Codelist> codelists = new ArrayList<Codelist>();
		for (CodelistBean codelist : beans.getCodelists())
			codelists.add(new Codelist(codelist.getId(), codelist.getName(),
					codelist.getAgencyId(), codelist.getVersion(), codelist
							.getDescription()));
		logger.debug("codelists: " + codelists);
		return codelists;
	}

	public List<Dataset> getAllDatasets() throws Exception {
		SdmxBeans beans = client.getProvisionAgreement("all", "all", "latest",
				Detail.full, References.children);
		List<Dataset> datasets = new ArrayList<Dataset>();
		for (DataflowBean dataflowBean : beans.getDataflows()) {
			datasets.add(new Dataset(dataflowBean.getId(), dataflowBean
					.getName(), dataflowBean.getAgencyId(), dataflowBean
					.getVersion(), dataflowBean.getDescription()));
		}
		logger.debug("datasets: " + datasets);
		return datasets;
	}

	public List<Agencies> getAllAgencies() throws Exception {
		List<Agencies> agenciesList = new ArrayList<Agencies>();
		if (client == null) {
			logger.error("getAllAgencies() Error: client is null");
		} else {
			SdmxBeans beans = client.getAgencyScheme("SDMX", "AGENCIES", "1.0",
					Detail.full, References.none);
			if (beans == null) {
				logger.error("getAllAgencies() Error: SdmxBeans is null");
			} else {
				for (AgencyBean agency : beans.getAgencies())
					agenciesList.add(new Agencies(agency.getId(), agency
							.getName(), agency.getDescription()));

			}
		}
		logger.debug("agencies: " + agenciesList);
		return agenciesList;
	}

}