/*
    * This file is part of Waarp Project (named also Waarp or GG).
    *
    *  Copyright (c) 2019, Waarp SAS, and individual contributors by the @author
    *  tags. See the COPYRIGHT.txt in the distribution for a full listing of
    * individual contributors.
    *
    *  All Waarp Project is free software: you can redistribute it and/or
    * modify it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or (at your
   * option) any later version.
   *
   * Waarp is distributed in the hope that it will be useful, but WITHOUT ANY
   * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License along with
   * Waarp . If not, see <http://www.gnu.org/licenses/>.
   */
  package org.waarp.openr66.protocol.http.rest;
  
  import io.netty.channel.ChannelInitializer;
  import io.netty.channel.ChannelPipeline;
  import io.netty.channel.socket.SocketChannel;
  import io.netty.handler.codec.http.HttpContentCompressor;
  import io.netty.handler.codec.http.HttpServerCodec;
  import io.netty.handler.ssl.SslHandler;
  import io.netty.handler.stream.ChunkedWriteHandler;
  import org.waarp.common.crypto.ssl.WaarpSslContextFactory;
  import org.waarp.gateway.kernel.rest.RestConfiguration;
  
  /**
   * Pipeline Factory for Rest HTTP support for R66
   */
  public class HttpRestR66Initializer extends ChannelInitializer<SocketChannel> {
    private final boolean useHttpCompression;
    private final WaarpSslContextFactory waarpSslContextFactory;
    private final RestConfiguration restConfiguration;
  
    public HttpRestR66Initializer(final boolean useHttpCompression,
                                  final WaarpSslContextFactory waarpSslContextFactory,
                                  final RestConfiguration configuration) {
      this.waarpSslContextFactory = waarpSslContextFactory;
      this.useHttpCompression = useHttpCompression;
      restConfiguration = configuration;
    }
  
    @Override
    protected void initChannel(final SocketChannel ch) {
      // Create a default pipeline implementation.
      final ChannelPipeline pipeline = ch.pipeline();
  
      // Enable HTTPS if necessary.
      if (waarpSslContextFactory != null) {
        final SslHandler handler =
            waarpSslContextFactory.createHandlerServer(false, ch);
        pipeline.addLast("ssl", handler);
      }
  
      pipeline.addLast("codec", new HttpServerCodec());
      if (useHttpCompression) {
        pipeline.addLast("deflater", new HttpContentCompressor());
      }
      pipeline.addLast("chunkedWriter", new ChunkedWriteHandler());
      final HttpRestR66Handler r66handler =
          new HttpRestR66Handler(restConfiguration);
      pipeline.addLast("handler", r66handler);
    }
  }