content: /*
   * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
   * 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 me.ahoo.cosid.converter;
  
  import me.ahoo.cosid.Decorator;
  import me.ahoo.cosid.IdConverter;
  import me.ahoo.cosid.segment.grouped.GroupedAccessor;
  import me.ahoo.cosid.stat.Stat;
  import me.ahoo.cosid.stat.converter.GroupedPrefixConverterStat;
  
  import jakarta.annotation.Nonnull;
  import com.google.common.base.Preconditions;
  
  public class GroupedPrefixIdConverter implements IdConverter, Decorator<IdConverter> {
      public static final String DEFAULT_DELIMITER = "-";
      private final String delimiter;
      private final IdConverter actual;
  
      public GroupedPrefixIdConverter(String delimiter, IdConverter actual) {
          Preconditions.checkNotNull(delimiter, "prefix can not be null!");
          this.delimiter = delimiter;
          this.actual = actual;
      }
  
      @Nonnull
      @Override
      public IdConverter getActual() {
          return actual;
      }
  
      public String getDelimiter() {
          return delimiter;
      }
  
      @Nonnull
      @Override
      public String asString(long id) {
          String idStr = actual.asString(id);
          String groupKey = GroupedAccessor.requiredGet().getKey();
          if (delimiter.isEmpty()) {
              return groupKey + idStr;
          }
          return groupKey + delimiter + idStr;
      }
  
      @Override
      public long asLong(@Nonnull String idString) {
          throw new UnsupportedOperationException("GroupedPrefixIdConverter does not support converting String to Long!");
      }
  
      @Override
      public Stat stat() {
          return new GroupedPrefixConverterStat(getClass().getSimpleName(), delimiter, actual.stat());
      }
  }
  