package org.gcube.informationsystem.registry.impl.profilemanagement;

import java.rmi.RemoteException;
import java.util.List;

import org.gcube.common.core.contexts.GHNContext;
import org.gcube.common.core.faults.GCUBEFault;
import org.gcube.common.core.informationsystem.ISException;
import org.gcube.common.core.informationsystem.client.ISClient;
import org.gcube.common.core.informationsystem.client.QueryParameter;
import org.gcube.common.core.informationsystem.client.XMLResult;
import org.gcube.common.core.informationsystem.client.ISClient.ISMalformedQueryException;
import org.gcube.common.core.informationsystem.client.queries.GCUBEGenericQuery;
import org.gcube.common.core.resources.GCUBERunningInstance;
import org.gcube.common.core.utils.logging.GCUBELog;
import org.gcube.informationsystem.registry.impl.porttypes.RegistryFactory;
import org.gcube.informationsystem.registry.impl.contexts.ServiceContext;
import org.gcube.informationsystem.registry.stubs.RemoveResourceMessage;

/**
 * 
 * GHN profile management
 * 
 * @author Manuele Simi (ISTI-CNR)
 * 
 */
public class GHN {

    public static ISClient client = null;

    protected static final GCUBELog logger = new GCUBELog(GHN.class);
    
    private String id = null;

    public GHN(String id) {
	this.id = id;
    }

    /**
     * Unregisters all the RIs hosted on the gHN
     * 
     * @param service
     * @throws ISMalformedQueryException
     * @throws ISInvalidQueryException
     * @throws ISException
     * @throws GCUBEFault
     * @throws RemoteException
     */
    public void unregisterHostedRIs(RegistryFactory service) throws Exception {
	if (client == null)
	    client = GHNContext.getImplementation(ISClient.class);
	RemoveResourceMessage message = null;
	GCUBEGenericQuery query = client.getQuery("RIOnGHN");
	query.addParameters(new QueryParameter("ID", this.id));

	// query to IS on order to retrieve the RI deployed on the GHN;
	List<XMLResult> resources = client.execute(query, ServiceContext.getContext().getScope());

	if (resources.size() != 0) {
	    for (XMLResult resource : resources) {
		try {
		    message = new RemoveResourceMessage();
		    message.setType(GCUBERunningInstance.TYPE);
		    message.setUniqueID(resource.evaluate("/Resource/ID/text()").get(0));
		    service.removeResource(message);
		} catch (RemoteException rme) {
		}
	    }

	}
    }
}