package org.gcube.informationsystem.collector.impl.porttypes;


import javax.xml.namespace.QName;

import org.oasis.wsrf.faults.BaseFaultType;

import org.gcube.common.core.contexts.GCUBEServiceContext;
import org.gcube.common.core.porttypes.GCUBEPortType;
import org.gcube.common.core.utils.logging.GCUBELog;
import org.gcube.informationsystem.collector.impl.contexts.ICServiceContext;
import org.gcube.informationsystem.collector.impl.persistence.AggregatorPersistentResource;
import org.gcube.informationsystem.collector.impl.xmlstorage.exist.State;
import org.gcube.informationsystem.collector.impl.xmlstorage.exist.Sweeper;
import org.gcube.informationsystem.collector.stubs.DeleteProfileParams;
import org.gcube.informationsystem.collector.stubs.DocumentNotFoundFaultType;
import org.gcube.informationsystem.collector.stubs.GetProfileCriteria;
import org.gcube.informationsystem.collector.stubs.GetProfileLastModificationTimeMsCriteria;
import org.gcube.informationsystem.collector.stubs.GetResourceCriteria;
import org.gcube.informationsystem.collector.stubs.GetResourceLastModificationTimeMsCriteria;

import org.globus.wsrf.utils.FaultHelper;

/**
 * State service implementation class
 * 
 * @author Manuele Simi (ISTI-CNR)
 * 
 */
public class XMLCollectionAccess extends GCUBEPortType {

    /**
     * WS Properties namespace
     */
    public static final QName RP_SET = new QName(
	    "http://gcube-system.org/namespaces/informationsystem/collector/XMLCollectionAccess",
	    "ICRP");

    private final GCUBELog logger = new GCUBELog(XMLCollectionAccess.class);

    /**
     * Removes a profile from the Storage given its DILIGENT Resource ID
     * 
     * @param params
     *            a stub class including private java.lang.String
     *            DILIGENTResourceID; the id of the profile to remove private
     *            java.lang.String profileType; the type of the profile to
     *            remove (e.g RunningInstance, DHN, Service, etc.);
     * @return true if the resource is successfully deleted
     * @throws BaseFaultType
     *             if the type parameter is not valid or an error occurs when
     *             deleting the profile
     */

    public boolean deleteProfile(DeleteProfileParams params)
	    throws BaseFaultType {

	boolean response = false;
	String id = params.getID();
	String type = params.getProfileType();

	if ((id == "") || (id == null)) {
	    logger.warn("invalid id");
	    BaseFaultType fault = new BaseFaultType();
	    FaultHelper faultHelper = new FaultHelper(fault);
	    faultHelper.addDescription("invalid id");
	    throw fault;
	}

	if ((type == "") || (type == null)) {
	    logger.warn("invalid profile type");
	    BaseFaultType fault = new BaseFaultType();
	    FaultHelper faultHelper = new FaultHelper(fault);
	    faultHelper.addDescription("invalid profile type");
	    throw fault;
	}

	try {
	    logger.debug("deleting profile " + id + " from collection " + type);
	    State.getDataManager().retrieveAndDeleteProfileFromID(id, type);
	    if (type.equalsIgnoreCase("RunningInstance"))
		Sweeper.cleanResourceForRI(id);

	} catch (Exception e) {
	    logger.error("unable to remove resource: " + id, e);
	    BaseFaultType fault = new BaseFaultType();
	    FaultHelper faultHelper = new FaultHelper(fault);
	    faultHelper.addFaultCause(e);
	    faultHelper
		    .addDescription("IC service: Exception when deleting the requested resource");
	    throw fault;
	}
	return response;
    }

    /**
     * Removes a resource from the Storage given its ID
     * 
     * @param id
     *            - the id of the resoure to remove
     * @return true if the resource is successfully deleted
     * @throws BaseFaultType
     *             if the id parameter is null or an error occurs when deleting
     *             the profile
     */
    public boolean deleteResource(String id) throws BaseFaultType {

	boolean response = false;

	if ((id == "") || (id == null)) {
	    logger.warn("invalid id");
	    BaseFaultType fault = new BaseFaultType();
	    FaultHelper faultHelper = new FaultHelper(fault);
	    faultHelper.addDescription("invalid id");
	    throw fault;
	}

	try {
	    logger.debug("deleting resource: " + id);
	    State.getDataManager().retrieveAndDeleteResourceFromID(id);
	} catch (Exception e) {
	    logger.error("unable to remove resource: " + id, e);
	    BaseFaultType fault = new BaseFaultType();
	    FaultHelper faultHelper = new FaultHelper(fault);
	    faultHelper.addFaultCause(e);
	    faultHelper
		    .addDescription("IC service: Exception when deleting the requested resource");
	    throw fault;
	}
	return response;
    }

    /**
     * Deletes the entire set of registered RPs from the storage
     * 
     * @throws BaseFaultType  if an error occurs when deleting the resources
     */
    public void deleteAllRPs() throws BaseFaultType {
	try {
	    logger.info("DeleteAllRPs operation invoked");
	    Sweeper.cleanRPs();
	    logger.info("All RPs have been deleted from the storage");
	} catch (Exception e) {
	    logger.error("unable to clean RPs collction: ", e);
	    BaseFaultType fault = new BaseFaultType();
	    FaultHelper faultHelper = new FaultHelper(fault);
	    faultHelper.addFaultCause(e);
	    faultHelper.addDescription("IC service: Exception when deleting the requested resource");
	    throw fault;
	}
    }        

    /**
     * Retrieves the given Resource
     * @param criteria the Resource ID
     * @return the XML serialization of the Resource
     * @throws DocumentNotFoundFaultType if the Resource does not exist
     */
    public String getResource(GetResourceCriteria criteria) throws DocumentNotFoundFaultType {
	try {	    
	    AggregatorPersistentResource aresource = State.getDataManager().retrievePropertyResourceFromID(criteria.getID());	   
	    return aresource.getData();
	} catch (Exception e) {
	    logger.warn("Unable to find Resource with ID=" + criteria.getID(), e);	    
	    throw new DocumentNotFoundFaultType();
	}
	
    }
    
    /**
     * Retrieves the given Profile
     * @param criteria the Profile ID and Type
     * @return the XML serialization of the Profile
     * @throws DocumentNotFoundFaultType if the Profile does not exist
     */
    public String getProfile(GetProfileCriteria criteria) throws DocumentNotFoundFaultType {
	try {
	    AggregatorPersistentResource aresource = State.getDataManager().retrieveProfile(criteria.getID(), criteria.getProfileType());	    
	    return aresource.getData();
	} catch (Exception e) {
	    logger.warn("Unable to find Profile with ID=" + criteria.getID(), e);
	    throw new DocumentNotFoundFaultType();
	}
    }
    
    /**
     * Gets the last modification time in milliseconds of the given Profile
     * @param criteria the Profile ID and Type
     * @return the last update time in milliseconds
     * @throws DocumentNotFoundFaultType if the Profile does not exist
     */
    public long getProfileLastModificationTimeMs(GetProfileLastModificationTimeMsCriteria criteria) throws DocumentNotFoundFaultType {
	try {
	    AggregatorPersistentResource aresource = State.getDataManager().retrieveProfile(criteria.getID(), criteria.getProfileType());	
	    return aresource.getLastUpdateTimeinMills();
	} catch (Exception e) {
	    logger.warn("Unable to find Profile with ID=" + criteria.getID(), e);
	    throw new DocumentNotFoundFaultType();
	}
    }

    /**
     * Gets the last modification time in milliseconds of the given Resource
     * @param criteria the Resource ID
     * @return the last update time in milliseconds
     * @throws DocumentNotFoundFaultType if the Resource does not exist
     */
    public long getResourceLastModificationTimeMs(GetResourceLastModificationTimeMsCriteria criteria) throws DocumentNotFoundFaultType {	
	try {	    
	    AggregatorPersistentResource aresource = State.getDataManager().retrievePropertyResourceFromID(criteria.getID());	    
	    return aresource.getLastUpdateTimeinMills();
	} catch (Exception e) {
	    logger.warn("Unable to find Resource with ID=" + criteria.getID(), e);	    
	    throw new DocumentNotFoundFaultType();
	}
	
    }

    /** {@inheritDoc} */
    @Override
    protected GCUBEServiceContext getServiceContext() {
	return ICServiceContext.getContext();
    }
}