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.service;
  
  import org.apache.logging.log4j.Level;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.b3log.latke.ioc.Inject;
  import org.b3log.latke.repository.RepositoryException;
  import org.b3log.latke.service.annotation.Service;
  import org.b3log.solo.model.Option;
  import org.b3log.solo.repository.OptionRepository;
  import org.json.JSONObject;
  
  /**
   * Option query service.
   *
   * @author <a href="http://88250.b3log.org">Liang Ding</a>
   * @version 1.0.0.4, Jun 13, 2019
   * @since 0.6.0
   */
  @Service
  public class OptionQueryService {
  
      /**
       * Logger.
       */
      private static final Logger LOGGER = LogManager.getLogger(OptionQueryService.class);
  
      /**
       * Option repository.
       */
      @Inject
      private OptionRepository optionRepository;
  
      /**
       * Gets the skin.
       *
       * @return skin, returns {@code null} if not found
       */
      public JSONObject getSkin() {
          try {
              return getOptions(Option.CATEGORY_C_SKIN);
          } catch (final Exception e) {
              LOGGER.log(Level.ERROR, "Gets skin failed", e);
  
              return null;
          }
      }
  
      /**
       * Gets the user preference.
       *
       * @return user preference, returns {@code null} if not found
       */
      public JSONObject getPreference() {
          try {
              return getOptions(Option.CATEGORY_C_PREFERENCE);
          } catch (final Exception e) {
              LOGGER.log(Level.ERROR, "Gets preference failed", e);
  
              return null;
          }
      }
  
      /**
       * Gets an option with the specified option id.
       *
       * @param optionId the specified option id
       * @return an option, returns {@code null} if not found
       */
      public JSONObject getOptionById(final String optionId) {
          try {
              return optionRepository.get(optionId);
          } catch (final RepositoryException e) {
              return null;
          }
      }
  
      /**
       * Gets options with the specified category.
       * <p>
       * All options with the specified category will be merged into one json object as the return value.
       * </p>
       *
       * @param category the specified category
       * @return all options with the specified category, for example,
       * <pre>
       * {
       *     "${optionId}": "${optionValue}",
       *     ....
       * }
       * </pre>, returns {@code null} if not found
       */
      public JSONObject getOptions(final String category) {
          try {
              return optionRepository.getOptions(category);
          } catch (final Exception e) {
              return null;
          }
      }
  }
  