/*
    * ====================================================================
    * 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.hc.core5.reactor;
  
  import java.io.IOException;
  import java.nio.channels.SelectionKey;
  import java.nio.channels.SocketChannel;
  
  import org.apache.hc.core5.io.CloseMode;
  import org.apache.hc.core5.io.Closer;
  import org.apache.hc.core5.io.SocketTimeoutExceptionFactory;
  import org.apache.hc.core5.util.Timeout;
  
  final class InternalConnectChannel extends InternalChannel {
  
      private final SelectionKey key;
      private final SocketChannel socketChannel;
      private final IOSessionRequest sessionRequest;
      private final InternalDataChannel dataChannel;
      private final IOEventHandlerFactory eventHandlerFactory;
      private final IOReactorConfig reactorConfig;
      private final long creationTimeMillis;
  
      InternalConnectChannel(
              final SelectionKey key,
              final SocketChannel socketChannel,
              final IOSessionRequest sessionRequest,
              final InternalDataChannel dataChannel,
              final IOEventHandlerFactory eventHandlerFactory,
              final IOReactorConfig reactorConfig) {
          super();
          this.key = key;
          this.socketChannel = socketChannel;
          this.sessionRequest = sessionRequest;
          this.dataChannel = dataChannel;
          this.eventHandlerFactory = eventHandlerFactory;
          this.reactorConfig = reactorConfig;
          this.creationTimeMillis = System.currentTimeMillis();
      }
  
      @Override
      void onIOEvent(final int readyOps) throws IOException {
          if ((readyOps & SelectionKey.OP_CONNECT) != 0) {
              if (socketChannel.isConnectionPending()) {
                  socketChannel.finishConnect();
              }
              //check out connectTimeout
              final long now = System.currentTimeMillis();
              if (checkTimeout(now)) {
                  key.attach(dataChannel);
                  if (reactorConfig.getSocksProxyAddress() == null) {
                      dataChannel.upgrade(eventHandlerFactory.createHandler(dataChannel, sessionRequest.attachment));
                      sessionRequest.completed(dataChannel);
                      dataChannel.handleIOEvent(SelectionKey.OP_CONNECT);
                  } else {
                      final IOEventHandler ioEventHandler = new SocksProxyProtocolHandler(
                              dataChannel, sessionRequest, eventHandlerFactory, reactorConfig);
                      dataChannel.upgrade(ioEventHandler);
                      ioEventHandler.connected(dataChannel);
                  }
              }
          }
      }
  
      @Override
      Timeout getTimeout() {
          return sessionRequest.timeout;
      }
  
      @Override
      long getLastEventTime() {
          return creationTimeMillis;
      }
  
     @Override
     void onTimeout(final Timeout timeout) throws IOException {
         sessionRequest.failed(SocketTimeoutExceptionFactory.create(timeout));
         close();
     }
 
     @Override
     void onException(final Exception cause) {
         sessionRequest.failed(cause);
     }
 
     @Override
     public void close() throws IOException {
         key.cancel();
         socketChannel.close();
     }
 
     @Override
     public void close(final CloseMode closeMode) {
         key.cancel();
         Closer.closeQuietly(socketChannel);
     }
 
     @Override
     public String toString() {
         return sessionRequest.toString();
     }
 
 }