/*
    * Copyright 2012-2017 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.dict;
  
  import java.util.Base64;
  import java.util.Date;
  import java.util.regex.Pattern;
  
  import org.codelibs.fess.Constants;
  
  public abstract class DictionaryCreator {
      protected Pattern pattern;
  
      protected DictionaryManager dictionaryManager;
  
      public DictionaryCreator(final String pattern) {
          this.pattern = Pattern.compile(pattern);
      }
  
      public DictionaryFile<? extends DictionaryItem> create(final String path, final Date timestamp) {
          if (!isTarget(path)) {
              return null;
          }
  
          return newDictionaryFile(encodePath(path), path, timestamp);
      }
  
      protected String encodePath(final String path) {
          return Base64.getUrlEncoder().encodeToString(path.getBytes(Constants.CHARSET_UTF_8));
      }
  
      protected boolean isTarget(final String path) {
          return pattern.matcher(path).find();
      }
  
      protected abstract DictionaryFile<? extends DictionaryItem> newDictionaryFile(String id, String path, Date timestamp);
  
      public void setDictionaryManager(final DictionaryManager dictionaryManager) {
          this.dictionaryManager = dictionaryManager;
      }
  }