/*
    * ====================================================================
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF 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
   *
   *   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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.http.config;
  
  import java.nio.charset.Charset;
  import java.nio.charset.CodingErrorAction;
  
  import org.apache.http.Consts;
  import org.apache.http.annotation.ThreadingBehavior;
  import org.apache.http.annotation.Contract;
  import org.apache.http.util.Args;
  
  /**
   * HTTP connection configuration.
   *
   * @since 4.3
   */
  @Contract(threading = ThreadingBehavior.IMMUTABLE)
  public class ConnectionConfig implements Cloneable {
  
      public static final ConnectionConfig DEFAULT = new Builder().build();
  
      private final int bufferSize;
      private final int fragmentSizeHint;
      private final Charset charset;
      private final CodingErrorAction malformedInputAction;
      private final CodingErrorAction unmappableInputAction;
      private final MessageConstraints messageConstraints;
  
      ConnectionConfig(
              final int bufferSize,
              final int fragmentSizeHint,
              final Charset charset,
              final CodingErrorAction malformedInputAction,
              final CodingErrorAction unmappableInputAction,
              final MessageConstraints messageConstraints) {
          super();
          this.bufferSize = bufferSize;
          this.fragmentSizeHint = fragmentSizeHint;
          this.charset = charset;
          this.malformedInputAction = malformedInputAction;
          this.unmappableInputAction = unmappableInputAction;
          this.messageConstraints = messageConstraints;
      }
  
      public int getBufferSize() {
          return bufferSize;
      }
  
      public int getFragmentSizeHint() {
          return fragmentSizeHint;
      }
  
      public Charset getCharset() {
          return charset;
      }
  
      public CodingErrorAction getMalformedInputAction() {
          return malformedInputAction;
      }
  
      public CodingErrorAction getUnmappableInputAction() {
          return unmappableInputAction;
      }
  
      public MessageConstraints getMessageConstraints() {
          return messageConstraints;
      }
  
      @Override
      protected ConnectionConfig clone() throws CloneNotSupportedException {
          return (ConnectionConfig) super.clone();
      }
  
     @Override
     public String toString() {
         final StringBuilder builder = new StringBuilder();
         builder.append("[bufferSize=").append(this.bufferSize)
                 .append(", fragmentSizeHint=").append(this.fragmentSizeHint)
                 .append(", charset=").append(this.charset)
                 .append(", malformedInputAction=").append(this.malformedInputAction)
                 .append(", unmappableInputAction=").append(this.unmappableInputAction)
                 .append(", messageConstraints=").append(this.messageConstraints)
                 .append("]");
         return builder.toString();
     }
 
     public static ConnectionConfig.Builder custom() {
         return new Builder();
     }
 
     public static ConnectionConfig.Builder copy(final ConnectionConfig config) {
         Args.notNull(config, "Connection config");
         return new Builder()
             .setBufferSize(config.getBufferSize())
             .setCharset(config.getCharset())
             .setFragmentSizeHint(config.getFragmentSizeHint())
             .setMalformedInputAction(config.getMalformedInputAction())
             .setUnmappableInputAction(config.getUnmappableInputAction())
             .setMessageConstraints(config.getMessageConstraints());
     }
 
     public static class Builder {
 
         private int bufferSize;
         private int fragmentSizeHint;
         private Charset charset;
         private CodingErrorAction malformedInputAction;
         private CodingErrorAction unmappableInputAction;
         private MessageConstraints messageConstraints;
 
         Builder() {
             this.fragmentSizeHint = -1;
         }
 
         public Builder setBufferSize(final int bufferSize) {
             this.bufferSize = bufferSize;
             return this;
         }
 
         public Builder setFragmentSizeHint(final int fragmentSizeHint) {
             this.fragmentSizeHint = fragmentSizeHint;
             return this;
         }
 
         public Builder setCharset(final Charset charset) {
             this.charset = charset;
             return this;
         }
 
         public Builder setMalformedInputAction(final CodingErrorAction malformedInputAction) {
             this.malformedInputAction = malformedInputAction;
             if (malformedInputAction != null && this.charset == null) {
                 this.charset = Consts.ASCII;
             }
             return this;
         }
 
         public Builder setUnmappableInputAction(final CodingErrorAction unmappableInputAction) {
             this.unmappableInputAction = unmappableInputAction;
             if (unmappableInputAction != null && this.charset == null) {
                 this.charset = Consts.ASCII;
             }
             return this;
         }
 
         public Builder setMessageConstraints(final MessageConstraints messageConstraints) {
             this.messageConstraints = messageConstraints;
             return this;
         }
 
         public ConnectionConfig build() {
             Charset cs = charset;
             if (cs == null && (malformedInputAction != null || unmappableInputAction != null)) {
                 cs = Consts.ASCII;
             }
             final int bufSize = this.bufferSize > 0 ? this.bufferSize : 8 * 1024;
             final int fragmentHintSize  = this.fragmentSizeHint >= 0 ? this.fragmentSizeHint : bufSize;
             return new ConnectionConfig(
                     bufSize,
                     fragmentHintSize,
                     cs,
                     malformedInputAction,
                     unmappableInputAction,
                     messageConstraints);
         }
 
     }
 
 }