/**
 * Copyright (c) 2009-2012 EBM WebSourcing, 2012-2015 Linagora
 * 
 * This program/library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 2.1 of the License, or (at your
 * option) any later version.
 * 
 * This program/library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program/library; If not, see <http://www.gnu.org/licenses/>
 * for the GNU Lesser General Public License version 2.1.
 */
package org.ow2.petals.microkernel.service;

import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.xml.namespace.QName;

import org.ow2.petals.launcher.api.service.Location;
import org.ow2.petals.launcher.api.service.ServiceEndpoint;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;

import com.ebmwebsourcing.easycommons.xml.XMLHelper;

/**
 * The PEtALS ESB service endpoint implementation.
 * @author Christophe Hamerling - EBM WebSourcing
 */
public class ServiceEndpointImpl implements ServiceEndpoint, Serializable {

    private static final Logger LOGGER = Logger.getLogger(ServiceEndpointImpl.class.getName());
    
    /**
     * Unique serial UID
     */
    private static final long serialVersionUID = 3846565220895975538L;

    /**
     * This attribute is defined "transient" to avoid its serialization when sending message exchanges. This attribute
     * is saved/loaded from the registry by the endpoint service.
     */
    private transient Document description;


    /**
     * This is the string description, the document is loaded if needed...
     * 
     * This attribute is defined "transient" to avoid its serialization when sending message exchanges. This attribute
     * is saved/loaded from the registry by the endpoint service.
     */
    private transient String stringDescription;

    private String endpointName;

    private QName serviceName;

    private Location location;

    private List<QName> interfacesName;

    private EndpointType type;

    /**
     * Default constructor
     */
    public ServiceEndpointImpl() {
        this(null, null, new ArrayList<QName>(0), null, new Location(),
                new HashMap<String, String>());
    }

    /**
     * 
     * @param endpointName
     * @param serviceName
     * @param interfacesName
     * @param description
     * @param location
     */
    public ServiceEndpointImpl(String endpointName, QName serviceName, List<QName> interfacesName,
            Document description, Location location, Map<String, String> properties) {
        super();
        this.endpointName = endpointName;
        this.serviceName = serviceName;
        this.interfacesName = interfacesName;
        this.description = description;
        this.location = location;
    }

    /**
     * {@inheritDoc}
     */
    public synchronized Document getDescription() {
        // transform the string description as DOM one on first call since this
        // is not always used, takes time and memory!
        if ((this.description == null) && (this.stringDescription != null)) {
            try {
                this.description = XMLHelper.createDocumentFromString(this.stringDescription);
            } catch (SAXException e) {
                LOGGER.log(Level.SEVERE, "Bad XML fragment can't be transformed to a DOM tree.", e);
            } catch (IOException e) {
                LOGGER.log(Level.SEVERE, "Unexpected Error", e);
            }
        }
        return this.description;
    }

    /**
     * {@inheritDoc}
     */
    public String getEndpointName() {
        return this.endpointName;
    }

    /**
     * {@inheritDoc}
     */
    public List<QName> getInterfacesName() {
        return this.interfacesName;
    }

    /**
     * {@inheritDoc}
     */
    public Location getLocation() {
        return this.location;
    }

    /**
     * {@inheritDoc}
     */
    public QName getServiceName() {
        return this.serviceName;
    }

    public void setDescription(Document description) {
        this.description = description;
    }

    public void setEndpointName(String endpointName) {
        this.endpointName = endpointName;
    }

    public void setServiceName(QName serviceName) {
        this.serviceName = serviceName;
    }

    public void setLocation(Location location) {
        this.location = location;
    }

    public void setInterfacesName(List<QName> interfacesName) {
        this.interfacesName = interfacesName;
    }

    @Override
    public String toString() {
        return this.serviceName + " ->" + this.endpointName + " (" + this.getType() + "):"
                + this.location.getSubdomainName() + "/" + this.location.getContainerName() + "/"
                + this.location.getComponentName();
    }

    public EndpointType getType() {
        return this.type;
    }

    public void setType(EndpointType type) {
        this.type = type;
    }

    public String getStringDescription() {
        return this.stringDescription;
    }

    public void setStringDescription(String stringDescription) {
        this.stringDescription = stringDescription;
    }

}