package eu.eudat.entities.xmlmodels.modeldefinition;

import java.util.LinkedList;
import java.util.List;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import eu.eudat.models.components.commons.Multiplicity;
import eu.eudat.utilities.XmlSerializable;
import eu.eudat.utilities.builders.XmlBuilder;

public class FieldSet implements DatabaseModelDefinition,XmlSerializable<FieldSet>{
	
	private String id;

	private int ordinal;
	private Multiplicity multiplicity;

	private List<Field> fields;
	
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public int getOrdinal() {
		return ordinal;
	}
	public void setOrdinal(int ordinal) {
		this.ordinal = ordinal;
	}
	public List<Field> getFields() {
		return fields;
	}
	public void setFields(List<Field> fields) {
		this.fields = fields;
	}
	
	public Multiplicity getMultiplicity() {
		return multiplicity;
	}
	public void setMultiplicity(Multiplicity multiplicity) {
		this.multiplicity = multiplicity;
	}
	@Override
	public Element toXml(Document doc) {
		
		Element rootElement = doc.createElement("fieldset");
		rootElement.setAttribute("id", this.id);
		rootElement.setAttribute("ordinal",""+this.ordinal);
		
		Element fieldsElement = doc.createElement("fields");
		for(Field field:this.fields){
			fieldsElement.appendChild(field.toXml(doc));
		}
		rootElement.appendChild(fieldsElement);
		Element multiplicity = doc.createElement("multiplicity");
		multiplicity.setAttribute("min", ""+this.multiplicity.getMin());
		multiplicity.setAttribute("max", ""+this.multiplicity.getMax());
		rootElement.appendChild(multiplicity);
		rootElement.appendChild(multiplicity);
		return rootElement;
	}
	@Override
	public FieldSet fromXml(Element element) {
		this.id = element.getAttribute("id");
		this.ordinal = Integer.parseInt(element.getAttribute("ordinal"));
		
		this.fields = new LinkedList();
		Element fields = (Element)XmlBuilder.getNodeFromListByTagName(element.getChildNodes(), "fields");

		if(fields!=null){
			NodeList fieldElements = fields.getChildNodes();
			for (int temp = 0; temp < fieldElements.getLength(); temp++) {
				Node fieldElement = fieldElements.item(temp);				
				if (fieldElement.getNodeType() == Node.ELEMENT_NODE) {
					this.fields.add(new Field().fromXml((Element)fieldElement));
				}
			}
		} 
		this.multiplicity = new Multiplicity();
		Element multiplicity = (Element)XmlBuilder.getNodeFromListByTagName(element.getChildNodes(), "multiplicity");

		this.multiplicity.setMin(Integer.parseInt(multiplicity.getAttribute("min")));
		this.multiplicity.setMax(Integer.parseInt(multiplicity.getAttribute("max")));
		
		return this;
	}
	
	
}