/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.bookkeeper.http.servlet;

import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.file.Files;
import java.util.List;
import javax.servlet.Servlet;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.webapp.WebAppContext;

/**
 * Jetty based http server.
 **/

public class JettyHttpServer {

  private Server jettyServer;
  private ContextHandlerCollection contexts;

  public JettyHttpServer(String host, int port){
     this.jettyServer = new Server(new InetSocketAddress(host, port));
     this.contexts = new ContextHandlerCollection();
     this.jettyServer.setHandler(contexts);
  }
  /**
   * Add servlet.
   **/
  public void addServlet(String webApp, String contextPath, String pathSpec, List<Servlet> servlets) throws IOException{
    if (servlets == null){
      return;
    }
    File bookieApi = new File(webApp);
    if (!bookieApi.isDirectory()) {
      Files.createDirectories(bookieApi.toPath());
    }
    WebAppContext webAppBookie = new WebAppContext(bookieApi.getAbsolutePath(), contextPath);
    for (Servlet s:servlets) {
      webAppBookie.addServlet(new ServletHolder(s), pathSpec);
    }
    contexts.addHandler(webAppBookie);
  }

  /**
   * Start jetty server.
   **/
  public void startServer() throws Exception{
       jettyServer.start();
  }

  /**
   * Stop jetty server.
   **/
  public void stopServer() throws Exception{
       jettyServer.stop();
  }
}
