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/*
 * Copyright 2013-2016 Basho Technologies Inc
 *
 * 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 com.basho.riak.client.api;

import com.basho.riak.client.api.commands.CoreFutureAdapter;
import com.basho.riak.client.core.FutureOperation;
import com.basho.riak.client.core.RiakCluster;
import com.basho.riak.client.core.RiakFuture;

/**
 * @author Sergey Galkin 
 * @since 2.1.0
 */
public abstract class GenericRiakCommand extends RiakCommand
{
    public static abstract class GenericRiakCommandWithSameInfo extends GenericRiakCommand
    {
        @Override
        protected I convertInfo(I coreInfo) {
            return coreInfo;
        }
    }

    protected abstract FutureOperation buildCoreOperation();

    protected RiakFuture executeAsync(RiakCluster cluster)
    {
        final FutureOperation coreOperation = buildCoreOperation();
        assert coreOperation != null;

        final RiakFuture coreFuture = cluster.execute(coreOperation);

        assert coreFuture != null;

        final CoreFutureAdapter future =
                new CoreFutureAdapter(coreFuture)
                {
                    @Override
                    protected R convertResponse(CoreR coreResponse)
                    {
                        return GenericRiakCommand.this.convertResponse(coreOperation, coreResponse);
                    }

                    @Override
                    protected I convertQueryInfo(CoreI coreQueryInfo)
                    {
                        return GenericRiakCommand.this.convertInfo(coreQueryInfo);
                    }
                };
        coreFuture.addListener(future);
        return future;
    }

    protected abstract R convertResponse(FutureOperation request, CoreR coreResponse);

    protected abstract I convertInfo(CoreI coreInfo);
}