package org.infinispan.client.hotrod.impl.multimap.operations;

import static org.infinispan.client.hotrod.impl.multimap.protocol.MultimapHotRodConstants.REMOVE_ENTRY_MULTIMAP_REQUEST;
import static org.infinispan.client.hotrod.impl.multimap.protocol.MultimapHotRodConstants.REMOVE_ENTRY_MULTIMAP_RESPONSE;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;

import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import net.jcip.annotations.Immutable;
import org.infinispan.client.hotrod.configuration.Configuration;
import org.infinispan.client.hotrod.impl.ClientStatistics;
import org.infinispan.client.hotrod.impl.ClientTopology;
import org.infinispan.client.hotrod.impl.protocol.HotRodConstants;
import org.infinispan.client.hotrod.impl.transport.netty.ChannelFactory;
import org.infinispan.client.hotrod.impl.transport.netty.HeaderDecoder;

/**
 * Implements "remove" for multimap as defined by  <a href="http://community.jboss.org/wiki/HotRodProtocol">Hot Rod
 * protocol specification</a>.
 *
 * @author Katia Aresti, karesti@redhat.com
 * @since 9.2
 */
@Immutable
public class RemoveEntryMultimapOperation extends AbstractMultimapKeyValueOperation<Boolean> {

   public RemoveEntryMultimapOperation(ChannelFactory channelFactory, Object key, byte[] keyBytes, byte[] cacheName,
                                       AtomicReference<ClientTopology> clientTopology, int flags, Configuration cfg, byte[] value,
                                       ClientStatistics clientStatistics, boolean supportsDuplicates) {
      super(REMOVE_ENTRY_MULTIMAP_REQUEST, REMOVE_ENTRY_MULTIMAP_RESPONSE, channelFactory, key, keyBytes, cacheName,
            clientTopology, flags, cfg, value, -1, TimeUnit.MILLISECONDS, -1, TimeUnit.MILLISECONDS, null,
            clientStatistics, supportsDuplicates);
   }

   @Override
   protected void executeOperation(Channel channel) {
      scheduleRead(channel);
      sendKeyValueOperation(channel);
   }

   @Override
   public void acceptResponse(ByteBuf buf, short status, HeaderDecoder decoder) {
      if (HotRodConstants.isNotExist(status)) {
         complete(Boolean.FALSE);
      } else {
         complete(buf.readByte() == 1 ? Boolean.TRUE : Boolean.FALSE);
      }
   }
}
