/*
    * Copyright 2002-2014 the original author or authors.
    *
    * 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.springframework.web.socket;
  
  import java.util.EnumSet;
  import javax.servlet.DispatcherType;
  import javax.servlet.Filter;
  
  import org.eclipse.jetty.server.Server;
  import org.eclipse.jetty.servlet.FilterHolder;
  import org.eclipse.jetty.servlet.ServletContextHandler;
  import org.eclipse.jetty.servlet.ServletHolder;
  
  import org.springframework.util.Assert;
  import org.springframework.util.SocketUtils;
  import org.springframework.web.context.WebApplicationContext;
  import org.springframework.web.servlet.DispatcherServlet;
  
  /**
   * Jetty based {@link WebSocketTestServer}.
   *
   * @author Rossen Stoyanchev
   */
  public class JettyWebSocketTestServer implements WebSocketTestServer {
  
  	private Server jettyServer;
  
  	private int port = -1;
  
  
  	@Override
  	public void setup() {
  		this.port = SocketUtils.findAvailableTcpPort();
  		this.jettyServer = new Server(this.port);
  	}
  
  	@Override
  	public int getPort() {
  		return this.port;
  	}
  
  	@Override
  	public void deployConfig(WebApplicationContext cxt, Filter... filters) {
  		Assert.state(this.port != -1, "setup() was never called.");
  		ServletContextHandler contextHandler = new ServletContextHandler();
  		ServletHolder servletHolder = new ServletHolder(new DispatcherServlet(cxt));
  		contextHandler.addServlet(servletHolder, "/");
  		for (Filter filter : filters) {
  			contextHandler.addFilter(new FilterHolder(filter), "/*", getDispatcherTypes());
  		}
  		this.jettyServer.setHandler(contextHandler);
  	}
  
  	private EnumSet<DispatcherType> getDispatcherTypes() {
  		return EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.INCLUDE, DispatcherType.ASYNC);
  	}
  
  	@Override
  	public void undeployConfig() {
  		// Stopping jetty will undeploy the servlet
  	}
  
  	@Override
  	public void start() throws Exception {
  		this.jettyServer.start();
  	}
  
  	@Override
  	public void stop() throws Exception {
  		if (this.jettyServer.isRunning()) {
  			this.jettyServer.setStopTimeout(5000);
  			this.jettyServer.stop();
  		}
  	}
  
  }