/*
    * 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.ProtwordsPager;
  import org.codelibs.fess.dict.DictionaryFile.PagingList;
  import org.codelibs.fess.dict.DictionaryManager;
  import org.codelibs.fess.dict.protwords.ProtwordsFile;
  import org.codelibs.fess.dict.protwords.ProtwordsItem;
  import org.codelibs.fess.mylasta.direction.FessConfig;
  import org.dbflute.optional.OptionalEntity;
  
  import jakarta.annotation.Resource;
  
  /**
   * Service for managing protected words dictionary.
   * This service provides operations for managing protected words dictionary files and items.
   */
  public class ProtwordsService {
  
      /**
       * Default constructor.
       */
      public ProtwordsService() {
          // Default constructor
      }
  
      /** Dictionary manager for handling dictionary files */
      @Resource
      protected DictionaryManager dictionaryManager;
  
      /** Configuration for Fess */
      @Resource
      protected FessConfig fessConfig;
  
      /**
       * Gets a paginated list of protected words items.
       * @param dictId the dictionary ID
       * @param protwordsPager the pager for pagination
       * @return the list of protected words items
       */
      public List<ProtwordsItem> getProtwordsList(final String dictId, final ProtwordsPager protwordsPager) {
          return getProtwordsFile(dictId).map(file -> {
              final int pageSize = protwordsPager.getPageSize();
              final PagingList<ProtwordsItem> protwordsList =
                      file.selectList((protwordsPager.getCurrentPageNumber() - 1) * pageSize, pageSize);
  
              // update pager
              BeanUtil.copyBeanToBean(protwordsList, protwordsPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
              protwordsList.setPageRangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
              protwordsPager.setPageNumberList(protwordsList.createPageNumberList());
  
              return (List<ProtwordsItem>) protwordsList;
          }).orElse(Collections.emptyList());
      }
  
      /**
       * Gets the protected words file for the specified dictionary ID.
       * @param dictId the dictionary ID
       * @return the protected words file if found
       */
      public OptionalEntity<ProtwordsFile> getProtwordsFile(final String dictId) {
          return dictionaryManager.getDictionaryFile(dictId)
                  .filter(ProtwordsFile.class::isInstance)
                  .map(file -> OptionalEntity.of((ProtwordsFile) file))
                  .orElse(OptionalEntity.empty());
      }
  
      /**
       * Gets a specific protected words item by ID.
       * @param dictId the dictionary ID
       * @param id the item ID
       * @return the protected words item if found
       */
      public OptionalEntity<ProtwordsItem> getProtwordsItem(final String dictId, final long id) {
          return getProtwordsFile(dictId).map(file -> file.get(id).get());
      }
  
      /**
       * Stores a protected words item (insert or update).
       * @param dictId the dictionary ID
      * @param protwordsItem the item to store
      */
     public void store(final String dictId, final ProtwordsItem protwordsItem) {
         getProtwordsFile(dictId).ifPresent(file -> {
             if (protwordsItem.getId() == 0) {
                 file.insert(protwordsItem);
             } else {
                 file.update(protwordsItem);
             }
         });
     }
 
     /**
      * Deletes a protected words item.
      * @param dictId the dictionary ID
      * @param protwordsItem the item to delete
      */
     public void delete(final String dictId, final ProtwordsItem protwordsItem) {
         getProtwordsFile(dictId).ifPresent(file -> {
             file.delete(protwordsItem);
         });
     }
 }