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package com.sun.xml.ws.transport.http.server;

import com.sun.net.httpserver.HttpContext;
import com.sun.xml.ws.transport.http.HttpAdapter;
import com.sun.xml.ws.transport.http.HttpAdapterList;
import com.sun.xml.ws.server.ServerRtException;
import com.sun.xml.ws.resources.ServerMessages;

import javax.xml.ws.EndpointReference;
import java.util.concurrent.Executor;
import java.net.MalformedURLException;
import java.net.URL;

import org.w3c.dom.Element;

/**
 * Hides {@link HttpContext} so that {@link EndpointImpl}
 * may load even without {@link HttpContext}.
 *
 * TODO: But what's the point? If Light-weight HTTP server isn't present,
 * all the publish operations will fail way. Why is it better to defer
 * the failure, as opposed to cause the failure as earyl as possible? -KK
 *
 * @author Jitendra Kotamraju
 */
public final class HttpEndpoint extends com.sun.xml.ws.api.server.HttpEndpoint {
    private String address;
    private HttpContext httpContext;
    private final HttpAdapter adapter;
    private final Executor executor;

    public HttpEndpoint(Executor executor, HttpAdapter adapter) {
        this.executor = executor;
        this.adapter = adapter;
    }

    public void publish(String address) {
        this.address = address;
        httpContext = ServerMgr.getInstance().createContext(address);
        publish(httpContext);
    }

    public void publish(Object serverContext) {
        if (serverContext instanceof javax.xml.ws.spi.http.HttpContext) {
            setHandler((javax.xml.ws.spi.http.HttpContext)serverContext);
            return;
        }
        if (serverContext instanceof HttpContext) {
            this.httpContext = (HttpContext)serverContext;
            setHandler(httpContext);
            return;
        }
        throw new ServerRtException(ServerMessages.NOT_KNOW_HTTP_CONTEXT_TYPE(
                serverContext.getClass(), HttpContext.class,
                javax.xml.ws.spi.http.HttpContext.class));
    }

    HttpAdapterList getAdapterOwner() {
        return adapter.owner;
    }

    /**
     * This can be called only after publish
     * @return address of the Endpoint
     */
    private String getEPRAddress() {
    	if (address == null)
    		return httpContext.getServer().getAddress().toString();
    	try {
    		URL u = new URL(address);
    		if (u.getPort() == 0) {
    			return new URL(u.getProtocol(),u.getHost(),
    					httpContext.getServer().getAddress().getPort(),u.getFile()).toString();
    		}
    	} catch (MalformedURLException murl) {}
    	return address;
    }

    public void stop() {
        if (httpContext != null) {
            if (address == null) {
                // Application created its own HttpContext
                // httpContext.setHandler(null);
                httpContext.getServer().removeContext(httpContext);
            } else {
                // Remove HttpContext created by JAXWS runtime
                ServerMgr.getInstance().removeContext(httpContext);
            }
        }

        // Invoke WebService Life cycle method
        adapter.getEndpoint().dispose();
    }

    private void setHandler(HttpContext context) {
        context.setHandler(new WSHttpHandler(adapter, executor));
    }

    private void setHandler(javax.xml.ws.spi.http.HttpContext context) {
        context.setHandler(new PortableHttpHandler(adapter, executor));
    }

    public  T getEndpointReference(Class clazz, Element...referenceParameters) {
        String eprAddress = getEPRAddress();
        return clazz.cast(adapter.getEndpoint().getEndpointReference(clazz, eprAddress,eprAddress+"?wsdl", referenceParameters));
    }

}