/*
    * Copyright 2013 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:
    *
    *   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.jboss.netty.handler.codec.spdy;
  
  import org.jboss.netty.util.internal.StringUtil;
  
  /**
   * The default {@link SpdySynStreamFrame} implementation.
   */
  public class DefaultSpdySynStreamFrame extends DefaultSpdyHeadersFrame
          implements SpdySynStreamFrame {
  
      private int associatedToStreamId;
      private byte priority;
      private boolean unidirectional;
  
      /**
       * Creates a new instance.
       *
       * @param streamId             the Stream-ID of this frame
       * @param associatedToStreamId the Associated-To-Stream-ID of this frame
       * @param priority             the priority of the stream
       */
      public DefaultSpdySynStreamFrame(
              int streamId, int associatedToStreamId, byte priority) {
          super(streamId);
          setAssociatedToStreamId(associatedToStreamId);
          setPriority(priority);
      }
  
      public int getAssociatedToStreamId() {
          return associatedToStreamId;
      }
  
      public void setAssociatedToStreamId(int associatedToStreamId) {
          if (associatedToStreamId < 0) {
              throw new IllegalArgumentException(
                      "Associated-To-Stream-ID cannot be negative: " +
                      associatedToStreamId);
          }
          this.associatedToStreamId = associatedToStreamId;
      }
  
      public byte getPriority() {
          return priority;
      }
  
      public void setPriority(byte priority) {
          if (priority < 0 || priority > 7) {
              throw new IllegalArgumentException(
                      "Priority must be between 0 and 7 inclusive: " + priority);
          }
          this.priority = priority;
      }
  
      public boolean isUnidirectional() {
          return unidirectional;
      }
  
      public void setUnidirectional(boolean unidirectional) {
          this.unidirectional = unidirectional;
      }
  
      @Override
      public String toString() {
          StringBuilder buf = new StringBuilder();
          buf.append(getClass().getSimpleName());
          buf.append("(last: ");
          buf.append(isLast());
          buf.append("; unidirectional: ");
          buf.append(isUnidirectional());
          buf.append(')');
          buf.append(StringUtil.NEWLINE);
          buf.append("--> Stream-ID = ");
          buf.append(getStreamId());
          buf.append(StringUtil.NEWLINE);
          if (associatedToStreamId != 0) {
              buf.append("--> Associated-To-Stream-ID = ");
              buf.append(getAssociatedToStreamId());
              buf.append(StringUtil.NEWLINE);
          }
          buf.append("--> Priority = ");
          buf.append(getPriority());
          buf.append(StringUtil.NEWLINE);
          buf.append("--> Headers:");
          buf.append(StringUtil.NEWLINE);
         appendHeaders(buf);
 
         // Remove the last newline.
         buf.setLength(buf.length() - StringUtil.NEWLINE.length());
         return buf.toString();
     }
 }