//
   //  ========================================================================
   //  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.jsr356.client;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import javax.websocket.ClientEndpoint;
  import javax.websocket.ClientEndpointConfig;
  import javax.websocket.Decoder;
  import javax.websocket.Encoder;
  import javax.websocket.Extension;
  
  import org.eclipse.jetty.websocket.api.InvalidWebSocketException;
  
  public class AnnotatedClientEndpointConfig implements ClientEndpointConfig
  {
      private final List<Class<? extends Decoder>> decoders;
      private final List<Class<? extends Encoder>> encoders;
      private final List<Extension> extensions;
      private final List<String> preferredSubprotocols;
      private final Configurator configurator;
      private Map<String, Object> userProperties;
  
      public AnnotatedClientEndpointConfig(ClientEndpoint anno)
      {
          this.decoders = Collections.unmodifiableList(Arrays.asList(anno.decoders()));
          this.encoders = Collections.unmodifiableList(Arrays.asList(anno.encoders()));
          this.preferredSubprotocols = Collections.unmodifiableList(Arrays.asList(anno.subprotocols()));
  
          // no extensions declared in annotation
          this.extensions = Collections.emptyList();
          // no userProperties in annotation
          this.userProperties = new HashMap<>();
  
          if (anno.configurator() == null)
          {
              this.configurator = EmptyConfigurator.INSTANCE;
          }
          else
          {
              try
              {
                  this.configurator = anno.configurator().newInstance();
              }
              catch (InstantiationException | IllegalAccessException e)
              {
                  StringBuilder err = new StringBuilder();
                  err.append("Unable to instantiate ClientEndpoint.configurator() of ");
                  err.append(anno.configurator().getName());
                  err.append(" defined as annotation in ");
                  err.append(anno.getClass().getName());
                  throw new InvalidWebSocketException(err.toString(),e);
              }
          }
      }
  
      @Override
      public Configurator getConfigurator()
      {
          return configurator;
      }
  
      @Override
      public List<Class<? extends Decoder>> getDecoders()
      {
          return decoders;
      }
  
      @Override
      public List<Class<? extends Encoder>> getEncoders()
      {
          return encoders;
      }
  
      @Override
      public List<Extension> getExtensions()
      {
          return extensions;
      }
 
     @Override
     public List<String> getPreferredSubprotocols()
     {
         return preferredSubprotocols;
     }
 
     @Override
     public Map<String, Object> getUserProperties()
     {
         return userProperties;
     }
 }