package org.gcube.vremanagement.vremodeler.impl;

import java.rmi.RemoteException;
import java.sql.Date;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;

import org.gcube.common.core.faults.GCUBEFault;
import org.gcube.vremanagement.vremodeler.db.DBInterface;
import org.gcube.vremanagement.vremodeler.stubs.CollectionArray;
import org.gcube.vremanagement.vremodeler.stubs.FunctionalityIDArray;
import org.gcube.vremanagement.vremodeler.stubs.GHNArray;
import org.gcube.vremanagement.vremodeler.stubs.SetMDFormatArgs;
import org.gcube.vremanagement.vremodeler.stubs.VRERequest;

import org.globus.wsrf.ResourceException;
import org.globus.wsrf.encoding.ObjectSerializer;
import org.globus.wsrf.encoding.SerializationException;


public class ModelerService {

	
	protected ModelerResource getResource() throws ResourceException{
		return (ModelerResource) ModelerContext.getPortTypeContext().getWSHome().find();
	}
	
	/**
	 * 
	 * @param request void
	 * @return VoidType
	 * @throws RemoteException -
	 *   
	 */	
	public void setVREModel(VRERequest request) throws GCUBEFault{
		
		Date dateFrom=null, dateTo=null;
		ResultSet res=null;
		try {
			res=DBInterface.queryDB("select * from DL where DL.id='"+getResource().getId()+"'; ");
			if(res.next())	
			{
				dateFrom=new Date(request.getStartTime());
				dateTo=new Date(request.getEndTime());
				DBInterface.queryDB("update VRE set name='"+request.getVREName()+"', description='"+request.getVREDescription()+"', dldesigner='"+request.getVREDesigner()+"', dlmanager= '"+request.getVREManager()+"', intervalfrom='"+dateFrom+"', intervalto='"+dateTo+"' where DL.id='"+getResource().getID()+"'; ");
			}else{
				dateFrom=new Date(request.getStartTime());
				dateTo=new Date(request.getEndTime());
				String eprToString;
				try {
					eprToString = ObjectSerializer.toString(getResource().getEPR());
				    //logger.debug("EPR: "+eprToString);
				} catch (SerializationException e) {
					//logger.error("VDL Model Service: error serializing EPR");
					throw new RemoteException("VDL Model Service: error serializing EPR",e);
				}
				
				DBInterface.ExecuteUpdate("insert into VRE values('"+getResource().getID()+"','"+request.getVREName()+"','"+request.getVREDescription()+"','"+request.getVREDesigner()+"','"+request.getVREManager()+"','"+dateFrom+"','"+dateTo+"','"+eprToString+"','In Progress'); ");
			}
				
					
		} catch (Exception e) {
			//logger.error(e.getMessage());
			//e.printStackTrace();
			throw new GCUBEFault(e);
		}
				
	}
	
	
	
	/**
	 * 
	 * 
	 * @param request void
	 * @return VoidType
	 * @throws RemoteException -
	 */
	public String getVREModel() throws GCUBEFault{
		
				
		String toReturn =null;
		ResultSet res=null;
		
		//logger.debug("Request DL with ID "+ID);
		try {
			String ID=getResource().getId();
			DBInterface.connect();
			res=DBInterface.queryDB("select * from DL where DL.id='"+ID+"';");
			toReturn=XMLUtil.PrepareVREModelXML(res);
		} catch (Exception e) {
			//logger.error("VDLModel parsing error in function getDLModel "+e.getMessage());
			throw new GCUBEFault(e);
		}
		return toReturn;
	}
	
	/**
	 * return an XML containing the DHN list
	 * 
	 * @param request void
	 * @return a XML String
	 * @throws RemoteException -
	 */
	public String getGHNs() throws GCUBEFault{
		ResultSet res;
		ArrayList<String> relatedGHN=new ArrayList<String>();
		try{
			DBInterface.connect();
			res= DBInterface.queryDB("select * from GHN;");
			
			ResultSet resRelated= DBInterface.queryDB("select ghnid from VRERELATEDGHN where VRERELATEDGHN.dlid='"+getResource().getId()+"';");
			while(resRelated.next()){
				relatedGHN.add(resRelated.getString(1));
			}
			
		}catch(Exception e) {//logger.error("VDL Model: error on DB"); 
			throw new GCUBEFault(e);}
		
		return XMLUtil.PrepareGHNsXML(res, relatedGHN); 
	}
	
	
	/**
	 * Set the selected DHN
	 *  
	 * @param request array of dhn id
	 * @return VoidType
	 * @throws RemoteException -
	 */
	public void setGHNs(GHNArray request) throws GCUBEFault{
		try{
			String instanceID=(String) getResource().getId();
			DBInterface.ExecuteUpdate("DELETE FROM VRERELATEDDHN WHERE VRERELATEDDHN.vreid='"+instanceID+"';");
			
			String dlKey=instanceID;
			
			ArrayList<List<String>> values= new ArrayList<List<String>>(request.getGHNElement().length);
			ArrayList<String> row=null;
			for (int i=0; i<request.getGHNElement().length; i++)
			{
				row= new ArrayList<String>(2);
				row.add(dlKey);
				row.add(request.getGHNElement()[i]);
				values.add(row);
			}
			
			DBInterface.InsertInto("VRERELATEDGHN", values);
		}catch(Exception e){throw new GCUBEFault(e);}
				
	}
	
	
	/**
	 * 
	 * Return an XML with all the collection selectable
	 * 
	 * @param request void
	 * @return the collection retreived from the database
	 * @throws RemoteException -
	 */
	public String getCollection() throws GCUBEFault{
		ResultSet res;
		ArrayList<String> relatedCollection=new ArrayList<String>();
		try{
			DBInterface.connect();
			res= DBInterface.queryDB("select * from COLLECTION;");
			
			ResultSet resRelated= DBInterface.queryDB("select collid from VRERELATEDCOLLECTION where VRERELATEDCOLLECTION.dlid='"+getResource().getId()+"';");
			while(resRelated.next()){
				relatedCollection.add(resRelated.getString(1));
			}
			
		}catch(Exception e) {//logger.error("VDL Model: error on DB"); 
			throw new GCUBEFault(e);}
		
		return XMLUtil.PrepareCollectionXML(res, relatedCollection); 
	}
	
	/**
	 * 
	 * Insert in the DB the selected collection
	 * 
	 * @param request An Array that contains the selected collections ids 
	 * @return void
	 * @throws RemoteException -
	 */
	public void setCollection(CollectionArray request) throws GCUBEFault{
		try{
			DBInterface.connect();
			DBInterface.ExecuteUpdate("DELETE FROM VRERELATEDCOLLECTION WHERE VRERELATEDCOLLECTION.vreid='"+getResource().getID()+"';");
								
			String dlKey=(String) getResource().getId();
						
			ArrayList<List<String>> values= new ArrayList<List<String>>(request.getCollectionElement().length);
			ArrayList<String> row=null;
			for (int i=0; i<request.getCollectionElement().length; i++)
			{
				row = new ArrayList<String>(2);
				row.add(dlKey);
				row.add(request.getCollectionElement()[i]);
			}
			DBInterface.connect();
			DBInterface.InsertInto("VRERELATEDCOLLECTION", values);
		}catch(Exception e){throw new GCUBEFault(e);}
		
	}
	
	/**
	 * Return the possibles metadata format for selected collection 
	 * 
	 * @param request void
	 * @return a XML format string
	 * @throws RemoteException -
	 */
	public String getMetadataRelatedToCollection() throws GCUBEFault {
		ResultSet resDerivable, resNative, collectionRelated, totalMF;
		String preparedWhere="";
		
		Hashtable<String, ArrayList<String>> selectedMetadataStructure= new Hashtable<String, ArrayList<String>>();
		boolean enter=false;
		try{
			DBInterface.connect();
							
			collectionRelated= DBInterface.queryDB("select DLRELATEDCOLLECTION.collid from DLRELATEDCOLLECTION where DLRELATEDCOLLECTION.dlid='"+getResource().getId()+"';");
			//select only the resuls related with selected collection
			preparedWhere= " and ( ";
			while (collectionRelated.next()){
				enter=true;
				preparedWhere+= " mdc.collid='"+collectionRelated.getString(1)+"' or ";
			}
			
			ResultSet metadataSelected= DBInterface.queryDB("select collid, mfid from DLRELATEDMETADATAFORMAT where dlid='"+getResource().getID()+"';");
			
			//recovering possible previsious selection for metadataFormat
			while (metadataSelected.next()){
				if(selectedMetadataStructure.containsKey(metadataSelected.getString(1)))
					selectedMetadataStructure.get(metadataSelected.getString(1)).add(metadataSelected.getString(2));
				else {
					ArrayList<String> temp= new ArrayList<String>();
					temp.add(metadataSelected.getString(2));
					selectedMetadataStructure.put(metadataSelected.getString(1), temp);
				}
			}
			 
			if(!enter) throw new RemoteException("no collection selected for this DL");
			else preparedWhere=preparedWhere.substring(0, preparedWhere.length()-4)+") ";
				
			totalMF = DBInterface.queryDB("select MDFORMAT.id, MDFORMAT.name, MDFORMAT.schemauri, MDFORMAT.language from MDFORMAT;");
			
			
			resDerivable= DBInterface.queryDB("select mdc.collid, mdc.collname, mdc.colldesc , collmdf.id as mdfid from (select * from DERIVABLEMDF INNER JOIN MDFORMAT on DERIVABLEMDF.mdfid= MDFORMAT.id) " +
					"as COLLMDF,(select COLLECTION.id as collid, COLLECTION.name as collname, COLLECTION.description as colldesc, MDCOLLECTION.id as mdid from COLLECTION INNER JOIN MDCOLLECTION " +
					"ON COLLECTION.id = MDCOLLECTION.relatedcollectionid) as MDC where COLLMDF.mdcollid= MDC.mdid "+preparedWhere+";");
			
			resNative= DBInterface.queryDB("select mdc.collid, mdc.collname, mdc.colldesc , collmdf.id as mdfid from (select * from NATIVEMDF INNER JOIN MDFORMAT on NATIVEMDF.mdfid= MDFORMAT.id) " +
					"as COLLMDF,(select COLLECTION.id as collid, COLLECTION.name as collname, COLLECTION.description as colldesc, MDCOLLECTION.id as mdid from COLLECTION INNER JOIN MDCOLLECTION " +
			"ON COLLECTION.id = MDCOLLECTION.relatedcollectionid) as MDC where COLLMDF.mdcollid= MDC.mdid "+preparedWhere+";"); 
						
		}catch(Exception e) {//logger.error("ModelService: "+e.getMessage()); 
			throw new GCUBEFault(e);
		}
		
		
		return XMLUtil.PrepareMCFormatXML(null, null, null, selectedMetadataStructure);
	}
	
	
	/**
	 * 
	 * Sets selected Metadata Format
	 * 
	 * @param request
	 * @return void
	 * @throws RemoteException -
	 */
	public void setMetadataRelatedToCollection(SetMDFormatArgs request) throws GCUBEFault {
		try{
			DBInterface.ExecuteUpdate("DELETE FROM DLRELATEDMETADATAFORMAT WHERE DLRELATEDMETADATAFORMAT.dlid='"+getResource().getId()+"';");
			String[] singleElement;
			String key=(String) getResource().getId();
			
			//logger.debug(request.getCollectionIDArray().length+"  "+request.getMdFormatIDArray().length+" "+request.getCheckedArray().length+" "+request.getCheckedArray(0).getCheckedRowElement().length);
			ArrayList<List<String>> values= new ArrayList<List<String>>(request.getCollectionIDArray().length);
			ArrayList<String> row=null;
			for (int i=0; i<request.getCollectionIDArray().length; i++)
				for( int j=0; j<request.getMdFormatIDArray().length; j++)
				{
					if (request.getCheckedArray(i).getCheckedRowElement(j)){
						row =new ArrayList<String>(3);
						row.add(key);
						row.add(request.getCollectionIDArray(i));
						row.add(request.getMdFormatIDArray(j));
						values.add(row);
						
					}
				}
			
			DBInterface.InsertInto("VRERELATEDMETADATAFORMAT", values);
		}catch(Exception e){throw new GCUBEFault(e);}
	}
	
	
	/**
	 * Return an xml with the selectable functionalities
	 * String
	 * 
	 * @param request void
	 * @return an xml String containing selectable functionalities
	 * @throws RemoteException -
	 */
	public String getFunctionality() throws GCUBEFault {
		
		ResultSet resFunct=null;
		ResultSet selectedFuncRes=null;
		ResultSet selectedCSRes=null;
		ArrayList<Integer> selectedFunctionality= new ArrayList<Integer>();
		ArrayList<String> selectedCS= new ArrayList<String>();
		
		try {
			DBInterface.connect();
			resFunct= DBInterface.queryDB("select * from functionality where father is null;");
			selectedFuncRes= DBInterface.queryDB("select funcid from DLRELATEDFUNCT where vreid='"+getResource().getID()+"';");
			while (selectedFuncRes.next())
				selectedFunctionality.add(selectedFuncRes.getInt(1));
			selectedCSRes= DBInterface.queryDB("select csid from VRERELATEDCS where vreid='"+getResource().getID()+"';");
			while (selectedCSRes.next())
				selectedCS.add(selectedCSRes.getString(1));
		} catch (Exception e) {
			//logger.error("VDLModel Service: error retreiving functionality");
			e.printStackTrace();
			throw new GCUBEFault(e);
		}
		
		return XMLUtil.PrepareFunctionalityXML(resFunct, selectedFunctionality, selectedCS);
	}
	
	
	/**
	 * 
	 * 
	 * 
	 * @return void
	 * @throws RemoteException -
	 */
	public void setFunctionality(FunctionalityIDArray request) throws GCUBEFault {
		try{
			DBInterface.ExecuteUpdate("DELETE FROM VRERELATEDFUNCT WHERE VRERELATEDFUNCT.vreid='"+getResource().getId()+"';");
			DBInterface.ExecuteUpdate("DELETE FROM VRERELATEDCS WHERE VRERELATEDCS.vreid='"+getResource().getId()+"';");
			
			
			String dlKey=(String) getResource().getId();
			//logger.debug("KEY: "+dlKey);
			
			if (request.getFunctionalityIDElement()!=null){
				ArrayList<List<String>> values= new ArrayList<List<String>>(request.getFunctionalityIDElement().length);
				ArrayList<String> row=null;
				for (int i=0; i<request.getFunctionalityIDElement().length; i++)
				{
					row= new ArrayList<String>(2);
					row.add(dlKey);
					row.add(request.getFunctionalityIDElement()[i]);
					values.add(row);
				}
					
				DBInterface.InsertInto("VRERELATEDFUNCT", values);
			}
			
			if (request.getCsIDElement()!=null)
			{	
				ArrayList<List<String>> values= new ArrayList<List<String>>(request.getCsIDElement().length);
				ArrayList<String> row=null;
				
				for (int i=0; i<request.getCsIDElement().length; i++)
				{
					row= new ArrayList<String>(2);
					row.add(dlKey);
					row.add(request.getCsIDElement()[i]);
					values.add(row);
				}
					
				DBInterface.InsertInto("VRERELATEDCS", values);
			}
		}catch(Exception e){throw new GCUBEFault(e);}
		
	}
	
	/**
	 * Return an XML with Quality parameter to insert
	 * 
	 * @param request void
	 * @return a XML format String
	 * @throws RemoteException -
	 */
	public String getQuality() throws GCUBEFault{
		return XMLUtil.PrepareQualityXML(); 
	}
	
	
	/**
	 * Sets Quality parameters
	 * 
	 * @param request
	 * @throws RemoteException -
	 */
	public void setQuality(String request) throws GCUBEFault{
		
	}
	
	/**
	 * 
	 * set the DL state to Pending
	 * 
	 * @param request
	 * @return
	 * @throws RemoteException -
	 */
	public void setVREtoPendingState() throws GCUBEFault{
		try{
			DBInterface.ExecuteUpdate("UPDATE VRE SET STATUS='Pending' WHERE VRE.id='"+getResource().getId()+"';");
		}catch(Exception e){throw new GCUBEFault(e);}
	}
	
	/**
	 * 
	 * @param request
	 * @return
	 * @throws RemoteException -
	 */
	public void deployVRE() throws RemoteException{
		/*DBInterface.ExecuteUpdate("UPDATE DL SET STATUS='Deploying' WHERE DL.id='"+getResource().getId()+"';");
		DLManagementFactoryServiceAddressingLocator dlMan=new DLManagementFactoryServiceAddressingLocator();
		try {
			//retreive and connect to the DLManagement
			EndpointReferenceType eprDLMan= new EndpointReferenceType(new AttributedURI(DISHLSClient.getRunningInstanceManager(null, getMyEPR()).getEPRsRIFromClassAndName("Keeper", "DLManagement", "diligentproject/keeperservice/dlmanagement/DLManagementFactoryService", null, getMyEPR())[0]));
			DLManagementFactoryPortType dlManagementFactory= dlMan.getDLManagementFactoryPortTypePort(eprDLMan);
//			authorization control (if in the container the security is enabled)
		    if (ModelFactoryService.isSecurityEnabled){
		    	CredentialManager cred= new CredentialManager();
		    	ConfigureSecurity.setSecurity(((javax.xml.rpc.Stub)dlManagementFactory), cred.getCredentials());
		    }
			logger.debug("DLManagement retreived");
			String dlId=(String)getResource().getId();
			CreateDLMessage createDLMessage= new CreateDLMessage();
			createDLMessage.setVDLUniqueID(dlId);
			
			ResultSet dlGenRes= DBInterface.queryDB("select name, description, dldesigner, dlmanager, intervalto, id from DL where DL.id='"+dlId+"';");
			if (dlGenRes.next()){
				createDLMessage.setDLName((new NAL().getDefaultVO())+"/"+dlGenRes.getString(1));
				createDLMessage.setDescription(dlGenRes.getString(2));
				createDLMessage.setDLDesigner(dlGenRes.getString(3));
				createDLMessage.setDLManager(dlGenRes.getString(4));
				Calendar terminationTime=Calendar.getInstance();
				terminationTime.setTime(dlGenRes.getDate(5));
				createDLMessage.setDLTerminationTime(terminationTime);
				createDLMessage.setVDLUniqueID(dlGenRes.getString(6));
				createDLMessage.setIsSecurityEnabled(ModelFactoryService.isSecurityEnabled);
			}else throw new RemoteException("VDLModel Service: impossible to retreive specific DL");
		    
			//logger.debug("Setted first parameters");
			
			ArrayList<String> tempArray= new ArrayList<String>();
			
			//retreive and set collection ids
			ResultSet dlCollRes= DBInterface.queryDB("select collid from DLRELATEDCOLLECTION where  DLRELATEDCOLLECTION.dlid='"+dlId+"';");
			for (int i=0; dlCollRes.next(); i++)
				tempArray.add(dlCollRes.getString(1));
				
			createDLMessage.setColIDsList(tempArray.toArray(new String[0]));
			
			
			tempArray= new ArrayList<String>();
			//retreive Metadata IDs
			ResultSet dlMetadataRes=DBInterface.queryDB("select DISTINCT NATIVEMDF.MDCOLLID from DLRELATEDMETADATAFORMAT, NATIVEMDF where DLRELATEDMETADATAFORMAT.mfid=NATIVEMDF.mdfid and DLRELATEDMETADATAFORMAT.dlid='"+dlId+"';");
			for (int i=0; dlMetadataRes.next(); i++)
				tempArray.add(dlMetadataRes.getString(1));
			
			createDLMessage.setMcIDsList(tempArray.toArray(new String[0]));
			
			//TODO: TP retriving is a mistery :)
			
			//adding functionality to DLManagement request
			tempArray= new ArrayList<String>();
			ResultSet dlRelatedFunctionality=DBInterface.queryDB("select RELATEDSERVICEID.id from RELATEDSERVICEID, SERVICES, DLRELATEDFUNCT where DLRELATEDFUNCT.dlid='"+dlId+"' and SERVICES.id=DLRELATEDFUNCT.funcid and SERVICES.class=RELATEDSERVICEID.class and SERVICES.name=RELATEDSERVICEID.name;");
			for (int i=0; dlRelatedFunctionality.next(); i++){
				tempArray.add(dlRelatedFunctionality.getString(1));
				logger.debug("ServiceID: "+dlRelatedFunctionality.getString(1));
			}
			createDLMessage.setServiceIDsList(tempArray.toArray(new String[0]));
			
			//adding DHN to DLManagement request
			tempArray= new ArrayList<String>();
			ResultSet dlRelatedDHN=DBInterface.queryDB("select DLRELATEDDHN.dhnid from DLRELATEDDHN where DLRELATEDDHN.dlid='"+dlId+"'");
			for (int i=0; dlRelatedDHN.next(); i++)
				tempArray.add(dlRelatedDHN.getString(1));
				
			createDLMessage.setDhnIDsList(tempArray.toArray(new String[0]));
			
			
			//adding cs to DLManagement request
			tempArray= new ArrayList<String>();
			ResultSet dlCSRes= DBInterface.queryDB("select csid from DLRELATEDCS where  DLRELATEDCS.dlid='"+getResource().getId()+"';");
			for (int i=0; dlCSRes.next(); i++)
				tempArray.add(dlCSRes.getString(1));
			createDLMessage.setCsIDsList(tempArray.toArray(new String[0]));
			
			
			//DLManagement invocation
			dlManagementFactory.createDL(createDLMessage);
			
		} catch (Exception e) {
			logger.error("VDLModel Service: Error Deploying DL "+e.getMessage());
			e.printStackTrace();
			DBInterface.ExecuteUpdate("UPDATE DL SET STATUS='Failed' WHERE DL.id='"+getResource().getId()+"';");
			throw new RemoteException("VDLModel Service: Error Deploying DL" ,e);
		}
		*/
				
		
	}
	
	
	
}