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.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.content.WorkspaceContent;
import org.gcube.portlets.user.geoportaldataentry.client.ConcessioniFormCardTitle;
import org.gcube.portlets.user.geoportaldataentry.client.GreetingService;
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.
 */
@SuppressWarnings("serial")
public class GreetingServiceImpl extends RemoteServiceServlet implements GreetingService {
	
	public static final String GEONA_GENERIC_RESOURCE_SECONDARY_TYPE = "GEONA_GENERIC_RESOURCE_SECONDARY_TYPE";
	private static final Logger LOG = LoggerFactory.getLogger(GreetingServiceImpl.class);

	@Override
	public String 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());
		
		//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
		ConcessioneManager manager = ManagerFactory.registerNew(concessione);
		
		//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(rds);
		LOG.debug("Built "+ConcessioniFormCardTitle.INFORMAZIONI_DI_PROGETTO+" 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();
		GenericDatasetBean pfs = listGDB.get(0);
		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);
		}
		
		//If true -> data are published into the SDI 
		Boolean publish=false;
		
		/*Chiedo al manager di salvare il progetto, causando :
			*scrittura sul WS
			*pubblicazione sull'SDI (boolean publish)
			*scrittura sul DB di applicazione sia dei meta che dei vari link */
		Concessione registered=manager.commit(publish);

		LOG.info("Registered: "+registered);
		String link = null;
		try {
			link = ((WorkspaceContent)registered.getRelazioneScavo().getActualContent().get(0)).getLink();
		}catch (Exception e) {
			// TODO: handle exception
		}

		//String link = "toTest";
		
		if(link!=null)
			return "Project saved successfully";
		else
			return "Project saved with errors";
	}
	
	@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;
	}
	
	
	
	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);
					}
				}
			}
		}
	}
}