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package io.legaldocml.akn.element;

import com.google.common.collect.ImmutableMap;
import io.legaldocml.akn.AkomaNtosoContext;
import io.legaldocml.akn.attribute.CoreReq;
import io.legaldocml.akn.util.AknList;
import io.legaldocml.akn.util.XmlReaderHelper;
import io.legaldocml.io.QName;
import io.legaldocml.io.XmlReader;
import io.legaldocml.io.XmlWriter;

import javax.xml.stream.XMLStreamConstants;
import java.io.IOException;
import java.util.function.Supplier;

import static io.legaldocml.akn.AknElements.COMPONENT_REF;
import static io.legaldocml.akn.AknElements.INTRO;
import static io.legaldocml.akn.AknElements.RECITAL;
import static io.legaldocml.akn.AknElements.WRAP_UP;

/**
 *
 *  *   
 *     
 * 	     
 * 		   
 * 			 
 * 			 
 * 		       
 * 			   
 * 			 
 * 			 
 * 		   
 * 		   
 * 	     
 * 	   
 *   
 * 
 *
 * @author Jacques Militello
 */
public abstract class RecitalHierarchy extends BaseHierarchy implements CoreReq {

    private static final ImmutableMap> ELEMS;

    static {
        ELEMS = ImmutableMap.>builder()
                .put(COMPONENT_REF, ComponentRef::new)
                .put(RECITAL, Recital::new)
                .build();
    }

    private Intro intro;
    private final AknList elements = new AknList<>(new ReciltalHierarchyElement[4]);
    private WrapUp wrapUp;

    /**
     * {@inheritDoc}
     */
    @Override
    public void write(XmlWriter writer) throws IOException {
        CoreReq.super.write(writer);
        super.write(writer);

        if (this.intro != null) {
            this.intro.write(writer);
        }
        if (this.elements.size() > 0) {
            this.elements.write(writer);
        }

        if (this.wrapUp != null) {
            this.wrapUp.write(writer);
        }

    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void read(XmlReader reader) {

        QName qName = reader.getQName();
        super.read(reader);

        if (reader.getQName().equalsLocalName(INTRO)) {
            this.intro = new Intro();
            this.intro.read(reader);
            reader.nextStartOrEndElement();
        }

        XmlReaderHelper.read(reader, this.elements, ELEMS, qName, WRAP_UP);


        if (reader.getContext().getAkoXmlModule().getVersion() == 3 && reader.getEventType() == XMLStreamConstants.START_ELEMENT && reader.getQName().equalsLocalName(WRAP_UP)) {
            this.wrapUp = new WrapUp();
            this.wrapUp.read(reader);
            reader.nextStartOrEndElement();
        }
    }

    public final void setIntro(Intro intro) {
        this.intro = intro;
    }

}