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

import java.util.concurrent.TimeUnit;

import org.infinispan.client.hotrod.impl.ClientStatistics;
import org.infinispan.client.hotrod.impl.InternalRemoteCache;
import org.infinispan.client.hotrod.impl.VersionedOperationResponse;
import org.infinispan.client.hotrod.impl.protocol.Codec;
import org.infinispan.client.hotrod.impl.protocol.HotRodConstants;
import org.infinispan.client.hotrod.impl.transport.netty.ByteBufUtil;
import org.infinispan.client.hotrod.impl.transport.netty.HeaderDecoder;

import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;

/**
 * Implement "replaceIfUnmodified" as defined by  Hot Rod
 * protocol specification.
 *
 * @author [email protected]
 * @since 4.1
 */
public class ReplaceIfUnmodifiedOperation extends AbstractKeyValueOperation> {
   private final long version;

   public ReplaceIfUnmodifiedOperation(InternalRemoteCache remoteCache, byte[] keyBytes, byte[] value,
                                       long lifespan, TimeUnit lifespanTimeUnit, long maxIdle, TimeUnit maxIdleTimeUnit,
                                       long version) {
      super(remoteCache, keyBytes, value, lifespan, lifespanTimeUnit, maxIdle, maxIdleTimeUnit);
      this.version = version;
   }

   @Override
   public void writeOperationRequest(Channel channel, ByteBuf buf, Codec codec) {
      ByteBufUtil.writeArray(buf, keyBytes);
      codec.writeExpirationParams(buf, lifespan, lifespanTimeUnit, maxIdle, maxIdleTimeUnit);
      buf.writeLong(version);
      ByteBufUtil.writeArray(buf, valueBytes);
   }

   @Override
   public VersionedOperationResponse createResponse(ByteBuf buf, short status, HeaderDecoder decoder, Codec codec, CacheUnmarshaller unmarshaller) {
      return returnVersionedOperationResponse(buf, status, codec, unmarshaller);
   }

   @Override
   public void handleStatsCompletion(ClientStatistics statistics, long startTime, short status, VersionedOperationResponse responseValue) {
      if (HotRodConstants.isSuccess(status)) {
         statistics.dataStore(startTime, 1);
      }
   }

   @Override
   public short requestOpCode() {
      return REPLACE_IF_UNMODIFIED_REQUEST;
   }

   @Override
   public short responseOpCode() {
      return REPLACE_IF_UNMODIFIED_RESPONSE;
   }
}