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package geneticmusic.choraleRules;

import geneticmusic.domain.Note;
import geneticmusic.fitness.AbstractCompositionRule;
import geneticmusic.jmusic.bridge.ConverterUtil;
import jm.JMC;
import jm.music.tools.PhraseAnalysis;
import org.jgap.Gene;
import org.jgap.IChromosome;

/**
 * Harmonic Rule
 * All notes must belong to the same scale
 * 
 * @author Davide Nunes
 */
public class HRInScale extends AbstractCompositionRule implements JMC {

    int[] scale;
    int tonic;

    public HRInScale(int[] scale, Note tonicP, double weight) {
        super(weight);
        this.scale = scale;
        this.tonic = ConverterUtil.getPitch(tonicP);
        
       
    }

    @Override
    protected double evaluation(IChromosome ic) {
        double result = 0.0;
        Gene[] genes = ic.getGenes();




        for (int i = 0; i < genes.length; i++) {
            Note[] currentNotes = (Note[]) genes[i].getAllele(); //get the current chord

            jm.music.data.Note note1 = new jm.music.data.Note(ConverterUtil.getPitch(currentNotes[0]), CROTCHET);
            jm.music.data.Note note2 = new jm.music.data.Note(ConverterUtil.getPitch(currentNotes[1]), CROTCHET);
            jm.music.data.Note note3 = new jm.music.data.Note(ConverterUtil.getPitch(currentNotes[2]), CROTCHET);
            jm.music.data.Note note4 = new jm.music.data.Note(ConverterUtil.getPitch(currentNotes[3]), CROTCHET);

            if (PhraseAnalysis.isScale(note1, tonic, scale)) {
                result += (1 / (genes.length * 4.0));
            }
            if (PhraseAnalysis.isScale(note2, tonic, scale)) {
                result += (1 / (genes.length * 4.0));
            }
            if (PhraseAnalysis.isScale(note3, tonic, scale)) {
                result += (1 / (genes.length * 4.0));
            }
            if (PhraseAnalysis.isScale(note4, tonic, scale)) {
                result += (1 / (genes.length * 4.0));
            }

        }

        return result;
    }

    @Override
    public String getName() {
        return "In Scale Rule";
    }
}