/*
    * Copyright 2017 The Netty Project
    *
    * The Netty Project licenses this file to you 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:
    *
    *   https://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 io.netty.handler.codec.http2;
  
  import io.netty.channel.ChannelId;
  
  /**
   * ChannelId implementation which is used by our {@link Http2StreamChannel} implementation.
   */
  final class Http2StreamChannelId implements ChannelId {
      private static final long serialVersionUID = -6642338822166867585L;
  
      private final int id;
      private final ChannelId parentId;
  
      Http2StreamChannelId(ChannelId parentId, int id) {
          this.parentId = parentId;
          this.id = id;
      }
  
      @Override
      public String asShortText() {
          return parentId.asShortText() + '/' + id;
      }
  
      @Override
      public String asLongText() {
          return parentId.asLongText() + '/' + id;
      }
  
      @Override
      public int compareTo(ChannelId o) {
          if (o instanceof Http2StreamChannelId) {
              Http2StreamChannelId otherId = (Http2StreamChannelId) o;
              int res = parentId.compareTo(otherId.parentId);
              if (res == 0) {
                  return id - otherId.id;
              } else {
                  return res;
              }
          }
          return parentId.compareTo(o);
      }
  
      @Override
      public int hashCode() {
          return id * 31 + parentId.hashCode();
      }
  
      @Override
      public boolean equals(Object obj) {
          if (!(obj instanceof Http2StreamChannelId)) {
              return false;
          }
          Http2StreamChannelId otherId = (Http2StreamChannelId) obj;
          return id == otherId.id && parentId.equals(otherId.parentId);
      }
  
      @Override
      public String toString() {
          return asShortText();
      }
  }