/*
    * Copyright 2016 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.bootstrap;
  
  import io.netty.channel.ChannelHandler;
  import io.netty.channel.ChannelOption;
  import io.netty.channel.EventLoopGroup;
  import io.netty.channel.ServerChannel;
  import io.netty.util.AttributeKey;
  import io.netty.util.internal.StringUtil;
  
  import java.util.Map;
  
  /**
   * Exposes the configuration of a {@link ServerBootstrapConfig}.
   */
  public final class ServerBootstrapConfig extends AbstractBootstrapConfig<ServerBootstrap, ServerChannel> {
  
      ServerBootstrapConfig(ServerBootstrap bootstrap) {
          super(bootstrap);
      }
  
      /**
       * Returns the configured {@link EventLoopGroup} which will be used for the child channels or {@code null}
       * if non is configured yet.
       */
      @SuppressWarnings("deprecation")
      public EventLoopGroup childGroup() {
          return bootstrap.childGroup();
      }
  
      /**
       * Returns the configured {@link ChannelHandler} be used for the child channels or {@code null}
       * if non is configured yet.
       */
      public ChannelHandler childHandler() {
          return bootstrap.childHandler();
      }
  
      /**
       * Returns a copy of the configured options which will be used for the child channels.
       */
      public Map<ChannelOption<?>, Object> childOptions() {
          return bootstrap.childOptions();
      }
  
      /**
       * Returns a copy of the configured attributes which will be used for the child channels.
       */
      public Map<AttributeKey<?>, Object> childAttrs() {
          return bootstrap.childAttrs();
      }
  
      @Override
      public String toString() {
          StringBuilder buf = new StringBuilder(super.toString());
          buf.setLength(buf.length() - 1);
          buf.append(", ");
          EventLoopGroup childGroup = childGroup();
          if (childGroup != null) {
              buf.append("childGroup: ");
              buf.append(StringUtil.simpleClassName(childGroup));
              buf.append(", ");
          }
          Map<ChannelOption<?>, Object> childOptions = childOptions();
          if (!childOptions.isEmpty()) {
              buf.append("childOptions: ");
              buf.append(childOptions);
              buf.append(", ");
          }
          Map<AttributeKey<?>, Object> childAttrs = childAttrs();
          if (!childAttrs.isEmpty()) {
              buf.append("childAttrs: ");
              buf.append(childAttrs);
              buf.append(", ");
          }
          ChannelHandler childHandler = childHandler();
          if (childHandler != null) {
              buf.append("childHandler: ");
              buf.append(childHandler);
              buf.append(", ");
          }
          if (buf.charAt(buf.length() - 1) == '(') {
              buf.append(')');
          } else {
              buf.setCharAt(buf.length() - 2, ')');
             buf.setLength(buf.length() - 1);
         }
 
         return buf.toString();
     }
 }