/*
 * Copyright 2016 KairosDB Authors
 *
 *    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 org.kairosdb.core.aggregator;

import com.google.common.collect.ImmutableList;
import org.kairosdb.core.aggregator.annotation.AggregatorName;
import org.kairosdb.core.datapoints.DoubleDataPointFactoryImpl;
import org.kairosdb.core.exception.KairosDBException;

import java.util.HashMap;
import java.util.Map;


public class TestAggregatorFactory implements AggregatorFactory
{
	private Map<String, Aggregator> m_aggregators = new HashMap<String, Aggregator>();

	public TestAggregatorFactory() throws KairosDBException
	{
		addAggregator(new SumAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new MinAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new MaxAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new AvgAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new StdAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new DivideAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new PercentileAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new FirstAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new LastAggregator(new DoubleDataPointFactoryImpl()));
		addAggregator(new SaveAsAggregator(null));
		addAggregator(new TrimAggregator());
	}

	private void addAggregator(Aggregator agg)
	{
		String name = (agg.getClass().getAnnotation(AggregatorName.class)).name();
		m_aggregators.put(name, agg);
	}

	public Aggregator createAggregator(String name)
	{
		return (m_aggregators.get(name));
	}

    @Override
    public ImmutableList<AggregatorMetadata> getAggregatorMetadata()
    {
        return null;
    }
}