/*
    * junixsocket
    *
    * Copyright 2009-2024 Christian Kohlschütter
    *
    * Licensed 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.newsclub.net.unix;
  
  import java.io.FileDescriptor;
  import java.io.IOException;
  import java.net.SocketAddress;
  import java.net.SocketException;
  
  /**
   * A selectable channel for stream-oriented connecting sockets.
   *
   * @author Christian Kohlschütter
   */
  public final class AFUNIXSocketChannel extends AFSocketChannel<AFUNIXSocketAddress> implements
      AFUNIXSocketExtensions {
    AFUNIXSocketChannel(AFUNIXSocket socket) {
      super(socket, AFUNIXSelectorProvider.getInstance());
    }
  
    /**
     * Opens a socket channel.
     *
     * @return The new channel
     * @throws IOException on error.
     */
    public static AFUNIXSocketChannel open() throws IOException {
      return (AFUNIXSocketChannel) AFSocketChannel.open(AFUNIXSocket::newLenientInstance);
    }
  
    /**
     * Opens a socket channel, connecting to the given socket address.
     *
     * @param remote The socket address to connect to.
     * @return The new channel
     * @throws IOException on error.
     */
    public static AFUNIXSocketChannel open(SocketAddress remote) throws IOException {
      return (AFUNIXSocketChannel) AFSocketChannel.open(AFUNIXSocket::newLenientInstance, remote);
    }
  
    @Override
    public FileDescriptor[] getReceivedFileDescriptors() throws IOException {
      return ((AFUNIXSocketExtensions) getAFSocket()).getReceivedFileDescriptors();
    }
  
    @Override
    public void clearReceivedFileDescriptors() {
      ((AFUNIXSocketExtensions) getAFSocket()).clearReceivedFileDescriptors();
    }
  
    @Override
    public void setOutboundFileDescriptors(FileDescriptor... fdescs) throws IOException {
      if (fdescs != null && fdescs.length > 0 && !isConnected()) {
        throw new SocketException("Not connected");
      }
      ((AFUNIXSocketExtensions) getAFSocket()).setOutboundFileDescriptors(fdescs);
    }
  
    @Override
    public boolean hasOutboundFileDescriptors() {
      return ((AFUNIXSocketExtensions) getAFSocket()).hasOutboundFileDescriptors();
    }
  
    @Override
    public AFUNIXSocketCredentials getPeerCredentials() throws IOException {
      return ((AFUNIXSocketExtensions) getAFSocket()).getPeerCredentials();
    }
  }