/*
    * Copyright 2012-2025 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.app.service;
  
  import java.util.Collections;
  import java.util.List;
  
  import org.codelibs.core.beans.util.BeanUtil;
  import org.codelibs.fess.Constants;
  import org.codelibs.fess.app.pager.KuromojiPager;
  import org.codelibs.fess.dict.DictionaryFile.PagingList;
  import org.codelibs.fess.dict.DictionaryManager;
  import org.codelibs.fess.dict.kuromoji.KuromojiFile;
  import org.codelibs.fess.dict.kuromoji.KuromojiItem;
  import org.codelibs.fess.mylasta.direction.FessConfig;
  import org.dbflute.optional.OptionalEntity;
  
  import jakarta.annotation.Resource;
  
  /**
   * Service class for Kuromoji.
   */
  public class KuromojiService {
      /** The dictionary manager. */
      @Resource
      protected DictionaryManager dictionaryManager;
  
      /** The Fess config. */
      @Resource
      protected FessConfig fessConfig;
  
      /**
       * Default constructor.
       */
      public KuromojiService() {
          // do nothing
      }
  
      /**
       * Get a list of Kuromoji items.
       *
       * @param dictId The dictionary ID.
       * @param kuromojiPager The pager for Kuromoji.
       * @return A list of Kuromoji items.
       */
      public List<KuromojiItem> getKuromojiList(final String dictId, final KuromojiPager kuromojiPager) {
          return getKuromojiFile(dictId).map(file -> {
              final int pageSize = kuromojiPager.getPageSize();
              final PagingList<KuromojiItem> kuromojiList = file.selectList((kuromojiPager.getCurrentPageNumber() - 1) * pageSize, pageSize);
  
              // update pager
              BeanUtil.copyBeanToBean(kuromojiList, kuromojiPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
              kuromojiList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
              kuromojiPager.setPageNumberList(kuromojiList.createPageNumberList());
  
              return (List<KuromojiItem>) kuromojiList;
          }).orElse(Collections.emptyList());
      }
  
      /**
       * Get a Kuromoji file.
       *
       * @param dictId The dictionary ID.
       * @return An optional entity of the Kuromoji file.
       */
      public OptionalEntity<KuromojiFile> getKuromojiFile(final String dictId) {
          return dictionaryManager.getDictionaryFile(dictId)
                  .filter(KuromojiFile.class::isInstance)
                  .map(file -> OptionalEntity.of((KuromojiFile) file))
                  .orElse(OptionalEntity.empty());
      }
  
      /**
       * Get a Kuromoji item.
       *
       * @param dictId The dictionary ID.
       * @param id The ID of the Kuromoji item.
       * @return An optional entity of the Kuromoji item.
       */
      public OptionalEntity<KuromojiItem> getKuromojiItem(final String dictId, final long id) {
          return getKuromojiFile(dictId).map(file -> file.get(id).get());
      }
  
      /**
       * Store a Kuromoji item.
       *
      * @param dictId The dictionary ID.
      * @param kuromojiItem The Kuromoji item to store.
      */
     public void store(final String dictId, final KuromojiItem kuromojiItem) {
         getKuromojiFile(dictId).ifPresent(file -> {
             if (kuromojiItem.getId() == 0) {
                 file.insert(kuromojiItem);
             } else {
                 file.update(kuromojiItem);
             }
         });
     }
 
     /**
      * Delete a Kuromoji item.
      *
      * @param dictId The dictionary ID.
      * @param kuromojiItem The Kuromoji item to delete.
      */
     public void delete(final String dictId, final KuromojiItem kuromojiItem) {
         getKuromojiFile(dictId).ifPresent(file -> {
             file.delete(kuromojiItem);
         });
     }
 }