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/*
 *  ******************************************************************************
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 *  * This program and the accompanying materials are made available under the
 *  * terms of the Apache License, Version 2.0 which is available at
 *  * https://www.apache.org/licenses/LICENSE-2.0.
 *  *
 *  *  See the NOTICE file distributed with this work for additional
 *  *  information regarding copyright ownership.
 *  * 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.
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 *  * SPDX-License-Identifier: Apache-2.0
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package org.deeplearning4j.spark.earlystopping;

import org.apache.spark.SparkContext;
import org.apache.spark.api.java.JavaRDD;
import org.apache.spark.api.java.JavaSparkContext;
import org.deeplearning4j.earlystopping.EarlyStoppingConfiguration;
import org.deeplearning4j.earlystopping.EarlyStoppingResult;
import org.deeplearning4j.earlystopping.listener.EarlyStoppingListener;
import org.deeplearning4j.nn.multilayer.MultiLayerNetwork;
import org.deeplearning4j.spark.api.TrainingMaster;
import org.deeplearning4j.spark.impl.multilayer.SparkDl4jMultiLayer;
import org.nd4j.linalg.dataset.DataSet;
import org.nd4j.linalg.dataset.api.MultiDataSet;

public class SparkEarlyStoppingTrainer extends BaseSparkEarlyStoppingTrainer {

    private SparkDl4jMultiLayer sparkNet;

    public SparkEarlyStoppingTrainer(SparkContext sc, TrainingMaster trainingMaster,
                    EarlyStoppingConfiguration esConfig, MultiLayerNetwork net,
                    JavaRDD train) {
        this(new JavaSparkContext(sc), trainingMaster, esConfig, net, train, null);
    }

    public SparkEarlyStoppingTrainer(JavaSparkContext sc, TrainingMaster trainingMaster,
                    EarlyStoppingConfiguration esConfig, MultiLayerNetwork net,
                    JavaRDD train) {
        this(sc, trainingMaster, esConfig, net, train, null);
    }

    public SparkEarlyStoppingTrainer(SparkContext sc, TrainingMaster trainingMaster,
                    EarlyStoppingConfiguration esConfig, MultiLayerNetwork net,
                    JavaRDD train, EarlyStoppingListener listener) {
        this(new JavaSparkContext(sc), trainingMaster, esConfig, net, train, listener);
    }

    public SparkEarlyStoppingTrainer(JavaSparkContext sc, TrainingMaster trainingMaster,
                    EarlyStoppingConfiguration esConfig, MultiLayerNetwork net,
                    JavaRDD train, EarlyStoppingListener listener) {
        super(sc, esConfig, net, train, null, listener);
        sparkNet = new SparkDl4jMultiLayer(sc, net, trainingMaster);
    }


    @Override
    protected void fit(JavaRDD data) {
        sparkNet.fit(data);
    }

    @Override
    protected void fitMulti(JavaRDD data) {
        throw new UnsupportedOperationException("Not supported");
    }

    @Override
    protected double getScore() {
        return sparkNet.getScore();
    }

    @Override
    public EarlyStoppingResult pretrain() {
        throw new UnsupportedOperationException("Not supported");
    }
}