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 *  *  information regarding copyright ownership.
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 *  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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package org.eclipse.deeplearning4j.frameworkimport.keras;

import org.deeplearning4j.nn.conf.layers.BaseLayer;
import org.deeplearning4j.nn.conf.layers.samediff.AbstractSameDiffLayer;
import org.nd4j.linalg.learning.regularization.L1Regularization;
import org.nd4j.linalg.learning.regularization.L2Regularization;
import org.nd4j.linalg.learning.regularization.Regularization;

import java.util.List;

import static org.junit.jupiter.api.Assertions.assertNotNull;

public class KerasTestUtils {

    private KerasTestUtils(){ }

    public static double getL1(BaseLayer layer) {
        List<Regularization> l = layer.getRegularization();
        return getL1(l);
    }

    public static double getL1(List<Regularization> l){
        L1Regularization l1Reg = null;
        for(Regularization reg : l){
            if(reg instanceof L1Regularization)
                l1Reg = (L1Regularization) reg;
        }
        assertNotNull(l1Reg);
        return l1Reg.getL1().valueAt(0,0);
    }

    public static double getL2(BaseLayer layer) {
        List<Regularization> l = layer.getRegularization();
        return getL2(l);
    }

    public static double getL2(List<Regularization> l){
        L2Regularization l2Reg = null;
        for(Regularization reg : l){
            if(reg instanceof L2Regularization)
                l2Reg = (L2Regularization) reg;
        }
        assertNotNull(l2Reg);
        return l2Reg.getL2().valueAt(0,0);
    }

    public static double getL1(AbstractSameDiffLayer layer){
        return getL1(layer.getRegularization());
    }

    public static double getL2(AbstractSameDiffLayer layer){
        return getL2(layer.getRegularization());
    }

}
