/*
    * 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.syncope.fit.buildtools;
  
  import com.unboundid.ldap.listener.Base64PasswordEncoderOutputFormatter;
  import com.unboundid.ldap.listener.InMemoryDirectoryServer;
  import com.unboundid.ldap.listener.InMemoryDirectoryServerConfig;
  import com.unboundid.ldap.listener.InMemoryListenerConfig;
  import com.unboundid.ldap.listener.UnsaltedMessageDigestInMemoryPasswordEncoder;
  import com.unboundid.ldap.sdk.schema.Schema;
  import java.net.InetAddress;
  import java.security.MessageDigest;
  import javax.servlet.ServletContextEvent;
  import javax.servlet.ServletContextListener;
  import javax.servlet.annotation.WebListener;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.context.ApplicationContext;
  import org.springframework.web.context.support.WebApplicationContextUtils;
  
  /**
   * Start and stop an in-memory LDAP server instance alongside with Servlet Context.
   */
  @WebListener
  public class LDAPStartStopListener implements ServletContextListener {
  
      private static final Logger LOG = LoggerFactory.getLogger(LDAPStartStopListener.class);
  
      private InMemoryDirectoryServer ldapServer;
  
      @Override
      public void contextInitialized(final ServletContextEvent sce) {
          try {
              ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(sce.getServletContext());
  
              InMemoryDirectoryServerConfig config =
                      new InMemoryDirectoryServerConfig(ctx.getEnvironment().getProperty("testds.rootDn"));
  
              config.addAdditionalBindCredentials(
                      ctx.getEnvironment().getProperty("testds.bindDn"),
                      ctx.getEnvironment().getProperty("testds.password"));
  
              InMemoryListenerConfig listenerConfig = InMemoryListenerConfig.createLDAPConfig(
                      "test-listener",
                      InetAddress.getLoopbackAddress(),
                      Integer.parseInt(ctx.getEnvironment().getProperty("testds.port")),
                      null);
              config.setListenerConfigs(listenerConfig);
  
              config.setSchema(Schema.getDefaultStandardSchema());
  
              config.setPasswordEncoders(
                      new UnsaltedMessageDigestInMemoryPasswordEncoder(
                              "{SHA}",
                              Base64PasswordEncoderOutputFormatter.getInstance(),
                              MessageDigest.getInstance("SHA-1")));
  
              ldapServer = new InMemoryDirectoryServer(config);
              ldapServer.importFromLDIF(false, ctx.getResource("classpath:/content.ldif").getFile());
              ldapServer.startListening();
          } catch (Exception e) {
              LOG.error("Fatal error in context init", e);
              throw new RuntimeException(e);
          }
      }
  
      @Override
      public void contextDestroyed(final ServletContextEvent sce) {
          if (ldapServer != null) {
              ldapServer.shutDown(true);
          }
      }
  }