/*
    * Copyright 2012-2021 CodeLibs Project and the Others.
    *
    * 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.codelibs.fess.filter;
  
  import java.io.IOException;
  
  import javax.servlet.Filter;
  import javax.servlet.FilterChain;
  import javax.servlet.FilterConfig;
  import javax.servlet.ServletException;
  import javax.servlet.ServletRequest;
  import javax.servlet.ServletResponse;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.codelibs.fess.api.WebApiManager;
  import org.codelibs.fess.api.WebApiManagerFactory;
  import org.codelibs.fess.util.ComponentUtil;
  
  public class WebApiFilter implements Filter {
  
      @Override
      public void init(final FilterConfig filterConfig) throws ServletException {
          // nothing
      }
  
      @Override
      public void destroy() {
          // nothing
      }
  
      @Override
      public void doFilter(final ServletRequest request, final ServletResponse response, final FilterChain chain)
              throws IOException, ServletException {
          final WebApiManagerFactory webApiManagerFactory = ComponentUtil.getWebApiManagerFactory();
          final WebApiManager webApiManager = webApiManagerFactory.get((HttpServletRequest) request);
          if (webApiManager == null) {
              chain.doFilter(request, response);
          } else {
              webApiManager.process((HttpServletRequest) request, (HttpServletResponse) response, chain);
          }
      }
  
  }