package org.apidesign.aserverinfo;

import java.net.URL;

import org.openide.util.Lookup;

public final class AServerInfo {

    private final NameProvider name;

    private final URLProvider url;

    private final ResetHandler reset;

    private final ShutdownHandler shutdown;

    private AServerInfo(

        NameProvider name, URLProvider url, 

        ResetHandler reset, ShutdownHandler shutdown

    ) {

        this.name = name;

        this.url = url;

        this.reset = reset;

        this.shutdown = shutdown;

    }

    //

    // API for clients

    //

    public String getName() {

        return name == null ? "noname" : name.getName();

    }

    public URL getURL() {

        return url == null ? null : url.getURL();

    }

    public void reset() {

        if (reset != null) {

            reset.reset();

        }

    }

    public void shutdown() {

        if (shutdown != null) {

            shutdown.shutdown();

        }

    }

    //

    // factories

    //

    // BEGIN: aserverinfo.create

    public interface NameProvider {

        public String getName();

    }

    public interface URLProvider {

        public URL getURL();

    }

    public interface ResetHandler {

        public void reset();

    }

    public static AServerInfo create(final Lookup interfaces) 

    // END: aserverinfo.create

    {

        NameProvider nameP = new NameProvider() {

            public String getName() {

                NameProvider p = interfaces.lookup(NameProvider.class);

                return p == null ? "noname" : p.getName();

            }

        };

        URLProvider urlP = new URLProvider() {

            public URL getURL() {

                URLProvider p = interfaces.lookup(URLProvider.class);

                return p == null ? null : p.getURL();

            }

        };

        ResetHandler resetP = new ResetHandler() {

            public void reset() {

                ResetHandler h = interfaces.lookup(ResetHandler.class);

                if (h != null) {

                    h.reset();

                }

            }

        };

        return new AServerInfo(nameP, urlP, resetP, null);

    }

    // BEGIN: aserverinfo.regularcreate

    public static AServerInfo create(

        NameProvider nameProvider, 

        URLProvider urlProvider, 

        ResetHandler reset

    )

    // END: aserverinfo.regularcreate

    {

        return new AServerInfo(nameProvider, urlProvider, reset, null);

    }

    // BEGIN: aserverinfo.regularcreate.withshutdown

    /** @since 2.0 */

    public interface ShutdownHandler {

        public void shutdown();

    }

    /** @since 2.0 */

    public static AServerInfo create(

        NameProvider nameProvider, 

        URLProvider urlProvider, 

        ResetHandler reset, 

        ShutdownHandler shutdown

    )

    // END: aserverinfo.regularcreate.withshutdown

    {

        return new AServerInfo(nameProvider, urlProvider, reset, shutdown);

    }

    //

    // cumulative factory methods

    //

    // BEGIN: aserverinfo.cumulative.factory

    public static AServerInfo empty() {

        return new AServerInfo(null, null, null, null);

    }

    public final AServerInfo nameProvider(final NameProvider np) {

        return new AServerInfo(np, this.url, this.reset, this.shutdown);

    }

    // END: aserverinfo.cumulative.factory

    public final AServerInfo urlProvider(final URLProvider up) {

        return new AServerInfo(this.name, up, this.reset, this.shutdown);

    }

    public final AServerInfo reset(final ResetHandler h) {

        return new AServerInfo(this.name, this.url, h, this.shutdown);

    }

    public final AServerInfo shutdown(final ShutdownHandler s) {

        return new AServerInfo(this.name, this.url, this.reset, s);

    }

}