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 eu.bitwalker.useragentutils.BrowserType;
  import eu.bitwalker.useragentutils.UserAgent;
  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.http.Request;
  import org.b3log.latke.http.RequestContext;
  import org.b3log.latke.http.function.Handler;
  import org.b3log.latke.ioc.BeanManager;
  import org.b3log.latke.util.Requests;
  import org.b3log.solo.service.OptionQueryService;
  import org.b3log.solo.service.StatisticMgmtService;
  import org.b3log.solo.util.Skins;
  import org.b3log.solo.util.Solos;
  import org.json.JSONObject;
  
  /**
   * Skin handler.
   *
   * @author <a href="http://88250.b3log.org">Liang Ding</a>
   * @version 1.0.0.1, Apr 30, 2020
   * @since 3.6.7
   */
  public class SkinHandler implements Handler {
  
      /**
       * Logger.
       */
      private static final Logger LOGGER = LogManager.getLogger(SkinHandler.class);
  
      @Override
      public void handle(final RequestContext context) {
          final Request request = context.getRequest();
          Requests.log(request, Level.DEBUG, LOGGER);
  
          fillBotAttrs(request);
          if (!Solos.isBot(request)) {
              final StatisticMgmtService statisticMgmtService = BeanManager.getInstance().getReference(StatisticMgmtService.class);
              statisticMgmtService.onlineVisitorCount(request);
          }
  
          resolveSkinDir(request);
  
          context.handle();
      }
  
      /**
       * Resolve skin (template) for the specified HTTP request.
       * 前台皮肤切换 https://github.com/b3log/solo/issues/12060
       * 调整前台动态皮肤预览逻辑 https://github.com/88250/solo/issues/116
       *
       * @param request the specified HTTP request
       */
      private void resolveSkinDir(final Request request) {
          String skin = Skins.getQuerySkin(request);
          if (StringUtils.isBlank(skin)) {
              final BeanManager beanManager = BeanManager.getInstance();
              final OptionQueryService optionQueryService = beanManager.getReference(OptionQueryService.class);
              final JSONObject skinOpt = optionQueryService.getSkin();
              if (Solos.isMobile(request)) {
                  if (null != skinOpt) {
                      skin = skinOpt.optString(org.b3log.solo.model.Option.ID_C_MOBILE_SKIN_DIR_NAME);
                  } else {
                      skin = org.b3log.solo.model.Option.DefaultPreference.DEFAULT_MOBILE_SKIN_DIR_NAME;
                  }
              } else {
                  if (null != skinOpt) {
                      skin = skinOpt.optString(org.b3log.solo.model.Option.ID_C_SKIN_DIR_NAME);
                  } else {
                      skin = org.b3log.solo.model.Option.DefaultPreference.DEFAULT_SKIN_DIR_NAME;
                  }
              }
          }
          request.setAttribute(Keys.TEMPLATE_DIR_NAME, skin);
      }
  
      private static void fillBotAttrs(final Request request) {
          final String userAgentStr = request.getHeader("User-Agent");
          final UserAgent userAgent = UserAgent.parseUserAgentString(userAgentStr);
          BrowserType browserType = userAgent.getBrowser().getBrowserType();
  
          if (StringUtils.containsIgnoreCase(userAgentStr, "mobile")
                  || StringUtils.containsIgnoreCase(userAgentStr, "MQQBrowser")
                  || StringUtils.containsIgnoreCase(userAgentStr, "iphone")
                  || StringUtils.containsIgnoreCase(userAgentStr, "MicroMessenger")
                  || StringUtils.containsIgnoreCase(userAgentStr, "CFNetwork")
                  || StringUtils.containsIgnoreCase(userAgentStr, "Android")) {
              browserType = BrowserType.MOBILE_BROWSER;
          } else if (StringUtils.containsIgnoreCase(userAgentStr, "Iframely")
                  || StringUtils.containsIgnoreCase(userAgentStr, "Google")
                  || StringUtils.containsIgnoreCase(userAgentStr, "BUbiNG")
                  || StringUtils.containsIgnoreCase(userAgentStr, "ltx71")
                  || StringUtils.containsIgnoreCase(userAgentStr, "py")) {
              browserType = BrowserType.ROBOT;
          }
  
          request.setAttribute(Keys.HttpRequest.IS_SEARCH_ENGINE_BOT, BrowserType.ROBOT == browserType);
          request.setAttribute(Keys.HttpRequest.IS_MOBILE_BOT, BrowserType.MOBILE_BROWSER == browserType);
      }
  }
  