content: /*
   * Solo - A small and beautiful blogging system written in Java.
   * Copyright (c) 2010-present, b3log.org
   *
   * Solo is licensed under Mulan PSL v2.
   * You can use this software according to the terms and conditions of the Mulan PSL v2.
   * You may obtain a copy of Mulan PSL v2 at:
   *         http://license.coscl.org.cn/MulanPSL2
   * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
   * See the Mulan PSL v2 for more details.
   */
  package org.b3log.solo.processor;
  
  import org.apache.commons.lang3.StringUtils;
  import org.apache.logging.log4j.Level;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.b3log.latke.Keys;
  import org.b3log.latke.Latkes;
  import org.b3log.latke.http.RequestContext;
  import org.b3log.latke.http.function.Handler;
  import org.b3log.latke.ioc.BeanManager;
  import org.b3log.solo.service.InitService;
  
  /**
   * Checks initialization handler.
   *
   * @author <a href="http://88250.b3log.org">Liang Ding</a>
   * @version 1.0.0.2, Dec 14, 2019
   * @since 3.2.0
   */
  public class InitCheckHandler implements Handler {
  
      /**
       * Logger.
       */
      private static final Logger LOGGER = LogManager.getLogger(InitCheckHandler.class);
  
      /**
       * Whether initialization info reported.
       */
      private static boolean initReported;
  
      @Override
      public void handle(final RequestContext context) {
          final String requestURI = context.requestURI();
          final boolean isSpiderBot = (boolean) context.attr(Keys.HttpRequest.IS_SEARCH_ENGINE_BOT);
          LOGGER.log(Level.TRACE, "Request [URI={}]", requestURI);
  
          // 禁止直接获取 robots.txt https://github.com/b3log/solo/issues/12543
          if (requestURI.startsWith("/robots.txt") && !isSpiderBot) {
              context.sendError(403);
              return;
          }
  
          final BeanManager beanManager = BeanManager.getInstance();
          final InitService initService = beanManager.getReference(InitService.class);
          if (initService.isInited()) {
              context.handle();
              return;
          }
  
          if (StringUtils.startsWith(requestURI, Latkes.getContextPath() + "/login/")) {
              // Do initialization
              context.handle();
              return;
          }
  
          if (!initReported) {
              LOGGER.log(Level.DEBUG, "Solo has not been initialized, so redirects to /start");
              initReported = true;
          }
  
          context.attr(Keys.HttpRequest.REQUEST_URI, Latkes.getContextPath() + "/start");
          context.handle();
      }
  }
  