//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.websocket.common.events.annotated;
  
  import java.io.InputStream;
  import java.io.Reader;
  import java.lang.reflect.Method;
  
  import org.eclipse.jetty.websocket.api.Session;
  
  /**
   * Simple CallableMethod that manages the optional {@link Session} argument
   */
  public class OptionalSessionCallableMethod extends CallableMethod
  {
      private final boolean wantsSession;
      private final boolean streaming;
  
      public OptionalSessionCallableMethod(Class<?> pojo, Method method)
      {
          super(pojo,method);
  
          boolean foundConnection = false;
          boolean foundStreaming = false;
  
          if (paramTypes != null)
          {
              for (Class<?> paramType : paramTypes)
              {
                  if (Session.class.isAssignableFrom(paramType))
                  {
                      foundConnection = true;
                  }
                  if (Reader.class.isAssignableFrom(paramType) || InputStream.class.isAssignableFrom(paramType))
                  {
                      foundStreaming = true;
                  }
              }
          }
  
          this.wantsSession = foundConnection;
          this.streaming = foundStreaming;
      }
  
      public void call(Object obj, Session connection, Object... args)
      {
          if (wantsSession)
          {
              Object fullArgs[] = new Object[args.length + 1];
              fullArgs[0] = connection;
              System.arraycopy(args,0,fullArgs,1,args.length);
              call(obj,fullArgs);
          }
          else
          {
              call(obj,args);
          }
      }
  
      public boolean isSessionAware()
      {
          return wantsSession;
      }
  
      public boolean isStreaming()
      {
          return streaming;
      }
  
      @Override
      public String toString()
      {
          return String.format("%s[%s]",this.getClass().getSimpleName(),method.toGenericString());
      }
  }