/*
    * 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.monitoring;
  
  import io.netty.channel.ChannelHandlerContext;
  import io.netty.channel.SimpleChannelInboundHandler;
  import io.netty.handler.codec.http.HttpObject;
  import io.netty.handler.codec.http.HttpResponse;
  import io.netty.handler.codec.http.HttpResponseStatus;
  import io.netty.handler.codec.http.LastHttpContent;
  import org.waarp.common.logging.WaarpLogger;
  import org.waarp.common.logging.WaarpLoggerFactory;
  
  public class HttpMonitoringExporterClientHandler
      extends SimpleChannelInboundHandler<HttpObject> {
    private static final WaarpLogger logger =
        WaarpLoggerFactory.getLogger(HttpMonitoringExporterClientHandler.class);
  
    private final HttpMonitoringExporterClient httpMonitoringExporterClient;
  
    public HttpMonitoringExporterClientHandler(
        final HttpMonitoringExporterClient httpMonitoringExporterClient) {
      this.httpMonitoringExporterClient = httpMonitoringExporterClient;
    }
  
    @Override
    protected void channelRead0(final ChannelHandlerContext ctx,
                                final HttpObject msg) throws Exception {
      if (msg instanceof HttpResponse) {
        final HttpResponse response = (HttpResponse) msg;
  
        final HttpResponseStatus status = response.status();
  
        httpMonitoringExporterClient.setStatus(
            response.status().code() == 200 || response.status().code() == 201);
      }
      if (msg instanceof LastHttpContent &&
          !httpMonitoringExporterClient.isKeepConnection()) {
        ctx.close();
      }
    }
  
    @Override
    public void exceptionCaught(final ChannelHandlerContext ctx,
                                final Throwable cause) {
      logger.error(cause);
      httpMonitoringExporterClient.setStatus(false);
      ctx.channel().close();
    }
  }