/**
    * Copyright (C) 2010 Daniel Manzke <daniel.manzke@googlemail.com>
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *         http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.onami.autobind.integrations.metro;
  
  import javax.xml.ws.WebServiceContext;
  
  import com.google.inject.AbstractModule;
  import com.google.inject.Guice;
  import com.google.inject.Injector;
  import com.google.inject.Module;
  import com.sun.istack.NotNull;
  import com.sun.xml.ws.api.message.Packet;
  import com.sun.xml.ws.api.server.ResourceInjector;
  import com.sun.xml.ws.api.server.WSEndpoint;
  import com.sun.xml.ws.api.server.WSWebServiceContext;
  import com.sun.xml.ws.server.AbstractMultiInstanceResolver;
  
  public class AutomaticGuiceManager<T> extends AbstractMultiInstanceResolver<T> {
  	private static Module startup;
  	protected static Injector injector;
  	protected ResourceInjector resourceInjector;
  	protected WSWebServiceContext webServiceContext;
  
  	public AutomaticGuiceManager(@NotNull final Class<T> clazz) throws IllegalAccessException,
  			InstantiationException {
  		super(clazz);
  	}
  
  	@Override
  	public T resolve(@NotNull final Packet packet) {
  		final T instance = injector.getInstance(this.clazz);
  		resourceInjector.inject(this.webServiceContext, instance);
  		return instance;
  	}
  
  	@SuppressWarnings("rawtypes")
  	@Override
  	public synchronized void start(WSWebServiceContext wsc, WSEndpoint endpoint) {
  		resourceInjector = getResourceInjector(endpoint);
  		webServiceContext = wsc;
  		if(injector == null){
  			injector = Guice.createInjector(startup, new AbstractModule() {
  				@Override
  				protected void configure() {
  					bind(WebServiceContext.class).toInstance(webServiceContext);
  				}
  			});
  		}
  	}
  	
  	public static void inject(Module startup){
  		AutomaticGuiceManager.startup = startup;
  	}
  }