package org.gcube.portlets.user.geoportaldataentry.server;

import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.gcube.application.geoportal.managers.ConcessioneManager;
import org.gcube.application.geoportal.managers.ManagerFactory;
import org.gcube.application.geoportal.model.InputStreamDescriptor;
import org.gcube.application.geoportal.model.Record;
import org.gcube.application.geoportal.model.concessioni.Concessione;
import org.gcube.application.geoportal.model.concessioni.LayerConcessione;
import org.gcube.application.geoportal.model.concessioni.RelazioneScavo;
import org.gcube.application.geoportal.model.content.UploadedImage;
import org.gcube.application.geoportal.model.report.PublicationReport;
import org.gcube.application.geoportalcommon.GeoportalCommon;
import org.gcube.application.geoportalcommon.shared.GeoNaItemRef;
import org.gcube.portlets.user.geoportaldataentry.client.ConcessioniFormCardTitle;
import org.gcube.portlets.user.geoportaldataentry.client.GeoportalDataEntryService;
import org.gcube.portlets.user.geoportaldataentry.shared.CommitReport;
import org.gcube.portlets.user.geoportaldataentry.shared.CommitReport.STATE;
import org.gcube.portlets.user.geoportaldataentry.shared.GeoNaFormDataObject;
import org.gcube.portlets.user.geoportaldataentry.shared.GeonaISConfig;
import org.gcube.portlets.widgets.mpformbuilder.shared.GenericDatasetBean;
import org.gcube.portlets.widgets.mpformbuilder.shared.upload.FileUploaded;
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.
 *
 * @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
 * 
 *         Dec 1, 2020
 */
@SuppressWarnings("serial")
public class GeoportalDataEntryServiceImpl extends RemoteServiceServlet implements GeoportalDataEntryService {

	public static final String GEONA_GENERIC_RESOURCE_SECONDARY_TYPE = "GEONA_GENERIC_RESOURCE_SECONDARY_TYPE";
	private static final Logger LOG = LoggerFactory.getLogger(GeoportalDataEntryServiceImpl.class);

	/**
	 * Save geona data forms.
	 *
	 * @param listGeonaFormObjects the list geona form objects
	 * @return the commit report
	 * @throws Exception the exception
	 */
	@Override
	public CommitReport saveGeonaDataForms(List<GeoNaFormDataObject> listGeonaFormObjects) throws Exception {
		LOG.info("saveGeonaDataForms called");

		HashMap<ConcessioniFormCardTitle, List<GeoNaFormDataObject>> toMap = new HashMap<ConcessioniFormCardTitle, List<GeoNaFormDataObject>>();

		for (GeoNaFormDataObject geoNaFormDataObject : listGeonaFormObjects) {

			ConcessioniFormCardTitle theType = geoNaFormDataObject.getTheType();

			List<GeoNaFormDataObject> listForm = toMap.get(theType);
			if (listForm == null) {
				listForm = new ArrayList<GeoNaFormDataObject>();
			}

			listForm.add(geoNaFormDataObject);
			toMap.put(theType, listForm);
		}
		if (LOG.isDebugEnabled())
			prettyPrintClientDataEntryMap(toMap);

		LOG.debug("Built map with form data: " + toMap);

		GCubeUser user = SessionUtil.getCurrentUser(this.getThreadLocalRequest());

		ConcessioneManager manager;

		try {

			// Saving Data
			// Informazioni di Progetto
			List<GeoNaFormDataObject> list = toMap.get(ConcessioniFormCardTitle.INFORMAZIONI_DI_PROGETTO);
			if (list == null || list.isEmpty() || list.get(0) == null || list.get(0).getListGDB() == null)
				throw new Exception(
						"Error: no data found for " + ConcessioniFormCardTitle.INFORMAZIONI_DI_PROGETTO.getTitle());

			List<GenericDatasetBean> listGDB = list.get(0).getListGDB();
			GenericDatasetBean idp = listGDB.get(0);
			LOG.debug("\n\n");
			LOG.debug(ConcessioniFormCardTitle.INFORMAZIONI_DI_PROGETTO + " building with client obj: " + idp);
			Concessione concessione = ConvertToServiceModel.toConcessione(idp, user);
			LOG.debug("Built " + ConcessioniFormCardTitle.INFORMAZIONI_DI_PROGETTO + " as server obj: " + concessione);

			// saving into back-end
			SessionUtil.getCurrentContext(this.getThreadLocalRequest(), true);
			manager = ManagerFactory.registerNew(concessione);
			
			// ABSTRACT_RELAZIONE_DI_SCAVO
			list = toMap.get(ConcessioniFormCardTitle.ABSTRACT_RELAZIONE_DI_SCAVO);
			if (list == null || list.isEmpty() || list.get(0) == null || list.get(0).getListGDB() == null)
				throw new Exception(
						"Error: no data found for " + ConcessioniFormCardTitle.ABSTRACT_RELAZIONE_DI_SCAVO.getTitle());
			
			listGDB = list.get(0).getListGDB();
			GenericDatasetBean ards = listGDB.get(0);
			LOG.debug("\n\n");
			LOG.debug(ConcessioniFormCardTitle.ABSTRACT_RELAZIONE_DI_SCAVO + " building with client obj: " + ards);
			RelazioneScavo abstractRelazioneDiScavo = ConvertToServiceModel.toAbstractRelazioneScavo(ards);

			// RELAZIONE_DI_SCAVO
			list = toMap.get(ConcessioniFormCardTitle.RELAZIONE_DI_SCAVO);
			if (list == null || list.isEmpty() || list.get(0) == null || list.get(0).getListGDB() == null)
				throw new Exception(
						"Error: no data found for " + ConcessioniFormCardTitle.RELAZIONE_DI_SCAVO.getTitle());

			listGDB = list.get(0).getListGDB();
			GenericDatasetBean rds = listGDB.get(0);
			LOG.debug("\n\n");
			LOG.debug(ConcessioniFormCardTitle.RELAZIONE_DI_SCAVO + " building with client obj: " + rds);
			RelazioneScavo relazioneDiScavo = ConvertToServiceModel.toRelazioneScavo(abstractRelazioneDiScavo, rds);
			LOG.debug("Built " + ConcessioniFormCardTitle.RELAZIONE_DI_SCAVO + " as server obj: " + relazioneDiScavo);
			// Should be only one
			for (FileUploaded fileUploaded : rds.getFilesUploaded()) {
				FileInputStream fis = new FileInputStream(fileUploaded.getTempSystemPath());
				InputStreamDescriptor isd = new InputStreamDescriptor(fis, fileUploaded.getFileName());
				// saving into back-end
				manager.setRelazioneScavo(relazioneDiScavo, isd);
			}

			// IMMAGINI_RAPPRESENTATIVE
			list = toMap.get(ConcessioniFormCardTitle.IMMAGINI_RAPPRESENTATIVE);
			if (list == null || list.isEmpty() || list.get(0) == null || list.get(0).getListGDB() == null)
				throw new Exception(
						"Error: no data found for " + ConcessioniFormCardTitle.IMMAGINI_RAPPRESENTATIVE.getTitle());

			List<GenericDatasetBean> imgRaprsLst = list.get(0).getListGDB();
			for (GenericDatasetBean imgRapr : imgRaprsLst) {
				LOG.debug("\n\n");
				LOG.debug(ConcessioniFormCardTitle.IMMAGINI_RAPPRESENTATIVE + " building with client obj: " + imgRapr);
				UploadedImage img = ConvertToServiceModel.toImmaginiRappresentative(imgRapr);
				LOG.debug("Built " + ConcessioniFormCardTitle.IMMAGINI_RAPPRESENTATIVE + " as server obj: " + img);
				for (FileUploaded fileUploaded : imgRapr.getFilesUploaded()) {
					LOG.debug("Adding uploaded file: " + fileUploaded.getFileName() + " to " + img);
					FileInputStream fis = new FileInputStream(fileUploaded.getTempSystemPath());
					InputStreamDescriptor isd = new InputStreamDescriptor(fis, fileUploaded.getFileName());
					// saving into back-end
					manager.addImmagineRappresentativa(img, isd);
				}
			}

			// POSIZIONAMENTO_DELL_AREA_DI_INDAGINE
			list = toMap.get(ConcessioniFormCardTitle.POSIZIONAMENTO_DELL_AREA_DI_INDAGINE);
			if (list == null || list.isEmpty() || list.get(0) == null || list.get(0).getListGDB() == null)
				throw new Exception("Error: no data found for "
						+ ConcessioniFormCardTitle.POSIZIONAMENTO_DELL_AREA_DI_INDAGINE.getTitle());

			listGDB = list.get(0).getListGDB();
			GenericDatasetBean pad = listGDB.get(0);
			LOG.debug("\n\n");
			LOG.debug(ConcessioniFormCardTitle.POSIZIONAMENTO_DELL_AREA_DI_INDAGINE + " building with client obj: "
					+ pad);
			LayerConcessione layerPad = ConvertToServiceModel.toLayerConcessione(pad);
			LOG.debug("Built " + ConcessioniFormCardTitle.POSIZIONAMENTO_DELL_AREA_DI_INDAGINE + " as server obj: "
					+ layerPad);
			for (FileUploaded fileUploaded : pad.getFilesUploaded()) {
				LOG.debug("Adding uploaded file: " + fileUploaded.getFileName() + " to " + layerPad);
				FileInputStream fis = new FileInputStream(fileUploaded.getTempSystemPath());
				InputStreamDescriptor isd = new InputStreamDescriptor(fis, fileUploaded.getFileName());
				// saving into back-end
				manager.setPosizionamento(layerPad, isd);
			}

			// PIANTA_DI_FINE_SCAVO
			list = toMap.get(ConcessioniFormCardTitle.PIANTA_DI_FINE_SCAVO);
			if (list == null || list.isEmpty() || list.get(0) == null || list.get(0).getListGDB() == null)
				throw new Exception(
						"Error: no data found for " + ConcessioniFormCardTitle.PIANTA_DI_FINE_SCAVO.getTitle());

			listGDB = list.get(0).getListGDB();
			//Managing N:N
			for (GenericDatasetBean pfs : listGDB) {
				LOG.debug("\n\n");
				LOG.debug(ConcessioniFormCardTitle.PIANTA_DI_FINE_SCAVO + " building with client obj: " + pfs);
				LayerConcessione layerPfs = ConvertToServiceModel.toLayerConcessione(pfs);
				LOG.debug("Built " + ConcessioniFormCardTitle.PIANTA_DI_FINE_SCAVO + " as server obj: " + layerPfs);
				for (FileUploaded fileUploaded : pfs.getFilesUploaded()) {
					LOG.debug("Adding uploaded file: " + fileUploaded.getFileName() + " to " + layerPfs);
					FileInputStream fis = new FileInputStream(fileUploaded.getTempSystemPath());
					InputStreamDescriptor isd = new InputStreamDescriptor(fis, fileUploaded.getFileName());
					// saving into back-end
					manager.addPiantaFineScavo(layerPfs, isd);
				}
			}
		} catch (Exception e) {
			LOG.error("Error on converting form data: ", e);
			throw new Exception(
					"Error occurred on saving data, try again or contact the support. Error: " + e.getMessage());
		}

		try {

			// If true -> data are published into the SDI
			Boolean publish = true;
			PublicationReport report = manager.commitSafely(publish);
			LOG.info("PublicationReport: " + report);
			Record registered = report.getTheRecord();

			// String link = "toTest";
			CommitReport cRep = new CommitReport();
			
			if(registered!=null)
				cRep.setRecordId(registered.getId());
			
			cRep.setReport(report.prettyPrint());
			
			switch (report.getStatus()) {
			case PASSED:
				cRep.setState(STATE.OK);
				if(cRep.getRecordId()==null) {
					LOG.error("The record id is null!!!");
					throw new Exception("Invalid record id");
				}
				break;
			case WARNING:
				cRep.setState(STATE.WARN);
				cRep.setMsg(report.getWarningMessages().toString());
				break;
			case ERROR:
				cRep.setState(STATE.ERROR);
				cRep.setMsg(report.getErrorMessages().toString());
				break;

			default:
				cRep.setState(STATE.UNKNOWN);
				break;
			}
			
			return cRep;
		} catch (Exception e) {
			LOG.error("Error on commiting data: ", e);
			throw new Exception(
					"Error occurred on saving data. Error: " + e.getMessage());
		} finally {
//			if(manager!=null) {
//				try {
//					manager.shutdown();
//				}catch (Exception e) {
//					//silent
//				}
//				
//			}
		}

	}

	/**
	 * Gets the geona init config.
	 *
	 * @return the geona init config
	 */
	@Override
	public GeonaISConfig getGeonaInitConfig() {
		LOG.info("getConfig called");

		String scope = SessionUtil.getCurrentContext(this.getThreadLocalRequest(), false);
		String theSecondaryType;
		try {
			theSecondaryType = this.getServletContext().getInitParameter(GEONA_GENERIC_RESOURCE_SECONDARY_TYPE);
		} catch (Exception e) {
			LOG.error("I cannot read the init parameter for: " + GEONA_GENERIC_RESOURCE_SECONDARY_TYPE, e);
			theSecondaryType = "GeoNaMetadata";
		}

//		LOG.warn("\n\n\nHARD-CABLING THE SCOPE, PLEASE REMOTE IT!!!!\n\n\n");
//		scope = "/gcube/devsec/devVRE";

		GeonaISConfig configs = new GeonaISConfig(theSecondaryType, scope);
		LOG.info("returning config: " + configs);
		return configs;
	}

	/**
	 * Gets the links for.
	 *
	 * @param itemId     the item id
	 * @param recordType the record type
	 * @return the links for
	 * @throws Exception the exception
	 */
	@Override
	public GeoNaItemRef getLinksFor(Long itemId, String recordType) throws Exception {
		LOG.info("getLinksFor called");

		SessionUtil.getCurrentContext(this.getThreadLocalRequest(), true);
		GeoportalCommon gc = new GeoportalCommon();
		GeoNaItemRef item = new GeoNaItemRef(itemId, recordType);
		item = gc.getPublicLinksFor(item);
		LOG.info("Returning: " + item);
		return item;
	}

	/**
	 * Pretty print client data entry map.
	 *
	 * @param toMap the to map
	 */
	private void prettyPrintClientDataEntryMap(HashMap<ConcessioniFormCardTitle, List<GeoNaFormDataObject>> toMap) {

		for (ConcessioniFormCardTitle theType : toMap.keySet()) {
			LOG.debug("\n\n");
			LOG.debug(theType.toString());
			List<GeoNaFormDataObject> list = toMap.get(theType);
			for (GeoNaFormDataObject geoNaFormDataObject : list) {
				LOG.debug("\t has " + geoNaFormDataObject.getListGDB().size() + " data bean/s");
				int i = 0;
				for (GenericDatasetBean gbd : geoNaFormDataObject.getListGDB()) {
					LOG.debug("\t " + ++i + ") " + GenericDatasetBean.class.getSimpleName() + " entries:");
					Map<String, List<String>> map = gbd.getFormDataEntryFields();
					for (String keyEntry : map.keySet()) {
						LOG.debug("\t " + keyEntry + ": " + map.get(keyEntry));
					}
					for (FileUploaded fup : gbd.getFilesUploaded()) {
						LOG.debug("\t " + fup);
					}
				}
			}
		}
	}
}