//
   //  ========================================================================
   //  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.server;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.concurrent.Executor;
  
  import javax.websocket.DeploymentException;
  import javax.websocket.Endpoint;
  import javax.websocket.server.ServerEndpoint;
  import javax.websocket.server.ServerEndpointConfig;
  
  import org.eclipse.jetty.http.pathmap.UriTemplatePathSpec;
  import org.eclipse.jetty.util.log.Log;
  import org.eclipse.jetty.util.log.Logger;
  import org.eclipse.jetty.websocket.common.WebSocketSession;
  import org.eclipse.jetty.websocket.common.events.EventDriverFactory;
  import org.eclipse.jetty.websocket.jsr356.ClientContainer;
  import org.eclipse.jetty.websocket.jsr356.JsrSessionFactory;
  import org.eclipse.jetty.websocket.jsr356.annotations.AnnotatedEndpointScanner;
  import org.eclipse.jetty.websocket.jsr356.endpoints.EndpointInstance;
  import org.eclipse.jetty.websocket.jsr356.metadata.EndpointMetadata;
  import org.eclipse.jetty.websocket.server.MappedWebSocketCreator;
  import org.eclipse.jetty.websocket.server.WebSocketServerFactory;
  
  public class ServerContainer extends ClientContainer implements javax.websocket.server.ServerContainer
  {
      private static final Logger LOG = Log.getLogger(ServerContainer.class);
  
      private final MappedWebSocketCreator mappedCreator;
      private final WebSocketServerFactory webSocketServerFactory;
      private List<Class<?>> deferredEndpointClasses;
      private List<ServerEndpointConfig> deferredEndpointConfigs;
  
      public ServerContainer(MappedWebSocketCreator creator, WebSocketServerFactory factory, Executor executor)
      {
          super(factory);
          this.mappedCreator = creator;
          this.webSocketServerFactory = factory;
          EventDriverFactory eventDriverFactory = this.webSocketServerFactory.getEventDriverFactory();
          eventDriverFactory.addImplementation(new JsrServerEndpointImpl());
          eventDriverFactory.addImplementation(new JsrServerExtendsEndpointImpl());
          this.webSocketServerFactory.addSessionFactory(new JsrSessionFactory(this));
          addBean(webSocketServerFactory);
      }
      
      public EndpointInstance newClientEndpointInstance(Object endpoint, ServerEndpointConfig config, String path)
      {
          EndpointMetadata metadata = getClientEndpointMetadata(endpoint.getClass(),config);
          ServerEndpointConfig cec = config;
          if (config == null)
          {
              if (metadata instanceof AnnotatedServerEndpointMetadata)
              {
                  cec = ((AnnotatedServerEndpointMetadata)metadata).getConfig();
              }
              else
              {
                  cec = new BasicServerEndpointConfig(this,endpoint.getClass(),path);
              }
          }
          return new EndpointInstance(endpoint,cec,metadata);
      }
  
      @Override
      public void addEndpoint(Class<?> endpointClass) throws DeploymentException
      {
          if (isStarted() || isStarting())
          {
              ServerEndpointMetadata metadata = getServerEndpointMetadata(endpointClass,null);
              addEndpoint(metadata);
          }
          else
          {
              if (deferredEndpointClasses == null)
              {
                  deferredEndpointClasses = new ArrayList<Class<?>>();
              }
              deferredEndpointClasses.add(endpointClass);
          }
      }
  
     private void addEndpoint(ServerEndpointMetadata metadata) throws DeploymentException
     {
         JsrCreator creator = new JsrCreator(this,metadata,webSocketServerFactory.getExtensionFactory());
         mappedCreator.addMapping(new UriTemplatePathSpec(metadata.getPath()),creator);
     }
 
     @Override
     public void addEndpoint(ServerEndpointConfig config) throws DeploymentException
     {
         if (isStarted() || isStarting())
         {
             if (LOG.isDebugEnabled())
             {
                 LOG.debug("addEndpoint({}) path={} endpoint={}",config,config.getPath(),config.getEndpointClass());
             }
             ServerEndpointMetadata metadata = getServerEndpointMetadata(config.getEndpointClass(),config);
             addEndpoint(metadata);
         }
         else
         {
             if (deferredEndpointConfigs == null)
             {
                 deferredEndpointConfigs = new ArrayList<ServerEndpointConfig>();
             }
             deferredEndpointConfigs.add(config);
         }
     }
     
     @Override
     protected void doStart() throws Exception
     {
         // Proceed with Normal Startup
         super.doStart();
         
         // Process Deferred Endpoints
         if (deferredEndpointClasses != null)
         {
             for (Class<?> endpointClass : deferredEndpointClasses)
             {
                 addEndpoint(endpointClass);
             }
             deferredEndpointClasses.clear();
         }
         
         if (deferredEndpointConfigs != null)
         {
             for (ServerEndpointConfig config : deferredEndpointConfigs)
             {
                 addEndpoint(config);
             }
             deferredEndpointConfigs.clear();
         }
     }
 
     public ServerEndpointMetadata getServerEndpointMetadata(final Class<?> endpoint, final ServerEndpointConfig config) throws DeploymentException
     {
         ServerEndpointMetadata metadata = null;
 
         ServerEndpoint anno = endpoint.getAnnotation(ServerEndpoint.class);
         if (anno != null)
         {
             // Annotated takes precedence here
             AnnotatedServerEndpointMetadata ametadata = new AnnotatedServerEndpointMetadata(this,endpoint,config);
             AnnotatedEndpointScanner<ServerEndpoint, ServerEndpointConfig> scanner = new AnnotatedEndpointScanner<>(ametadata);
             metadata = ametadata;
             scanner.scan();
         }
         else if (Endpoint.class.isAssignableFrom(endpoint))
         {
             // extends Endpoint
             @SuppressWarnings("unchecked")
             Class<? extends Endpoint> eendpoint = (Class<? extends Endpoint>)endpoint;
             metadata = new SimpleServerEndpointMetadata(eendpoint,config);
         }
         else
         {
             StringBuilder err = new StringBuilder();
             err.append("Not a recognized websocket [");
             err.append(endpoint.getName());
             err.append("] does not extend @").append(ServerEndpoint.class.getName());
             err.append(" or extend from ").append(Endpoint.class.getName());
             throw new DeploymentException("Unable to identify as valid Endpoint: " + endpoint);
         }
 
         return metadata;
     }
 
     @Override
     public long getDefaultAsyncSendTimeout()
     {
         return webSocketServerFactory.getPolicy().getAsyncWriteTimeout();
     }
 
     @Override
     public int getDefaultMaxBinaryMessageBufferSize()
     {
         return webSocketServerFactory.getPolicy().getMaxBinaryMessageSize();
     }
 
     @Override
     public long getDefaultMaxSessionIdleTimeout()
     {
         return webSocketServerFactory.getPolicy().getIdleTimeout();
     }
 
     @Override
     public int getDefaultMaxTextMessageBufferSize()
     {
         return webSocketServerFactory.getPolicy().getMaxTextMessageSize();
     }
 
     @Override
     public void setAsyncSendTimeout(long ms)
     {
         super.setAsyncSendTimeout(ms);
         webSocketServerFactory.getPolicy().setAsyncWriteTimeout(ms);
     }
 
     @Override
     public void setDefaultMaxBinaryMessageBufferSize(int max)
     {
         super.setDefaultMaxBinaryMessageBufferSize(max);
         // overall message limit (used in non-streaming)
         webSocketServerFactory.getPolicy().setMaxBinaryMessageSize(max);
         // incoming streaming buffer size
         webSocketServerFactory.getPolicy().setMaxBinaryMessageBufferSize(max);
     }
 
     @Override
     public void setDefaultMaxSessionIdleTimeout(long ms)
     {
         super.setDefaultMaxSessionIdleTimeout(ms);
         webSocketServerFactory.getPolicy().setIdleTimeout(ms);
     }
 
     @Override
     public void setDefaultMaxTextMessageBufferSize(int max)
     {
         super.setDefaultMaxTextMessageBufferSize(max);
         // overall message limit (used in non-streaming)
         webSocketServerFactory.getPolicy().setMaxTextMessageSize(max);
         // incoming streaming buffer size
         webSocketServerFactory.getPolicy().setMaxTextMessageBufferSize(max);
     }
 
     @Override
     public void onSessionClosed(WebSocketSession session)
     {
         webSocketServerFactory.onSessionClosed(session);
     }
 
     @Override
     public void onSessionOpened(WebSocketSession session)
     {
         webSocketServerFactory.onSessionOpened(session);
     }
 }