package org.simantics.xml.sax.base;

import java.util.Deque;

import org.simantics.databoard.Bindings;
import org.simantics.databoard.binding.Binding;
import org.simantics.db.Resource;
import org.simantics.db.WriteGraph;
import org.simantics.db.exception.DatabaseException;
import org.simantics.layer0.Layer0;

public class ValueElementParser extends XMLElementParserBase{
	
	String name;
	Binding binding;
	String relationURI;
	
	public ValueElementParser(String name, String relationURI,Binding binding) {
		this.name = name;
		this.relationURI = relationURI;
		this.binding = binding;
	}
	
	@Override
	public String getElementId() {
		return name;
	}
	
	@Override
	public Resource create(WriteGraph graph, ParserElement element)
			throws DatabaseException {
		Resource res = graph.newResource();
		return res;
	}
	
	@Override
	public void configure(WriteGraph graph, Deque<ParserElement> parents,	ParserElement element) throws DatabaseException {
	}
	
	@Override
	public boolean connectParent(WriteGraph graph, ParserElement parent, ParserElement element)throws DatabaseException {
		graph.claim(parent.getData(), graph.getResource(relationURI), element.getData());
		return true;
	}
	
	@Override
	public boolean connectChild(WriteGraph graph, ParserElement element, ParserElement child) throws DatabaseException {
		return false;
	}
	
	@Override
	public void configure(WriteGraph graph, ParserElement element, String string)	throws DatabaseException {
		Layer0 l0 = Layer0.getInstance(graph);
		if (binding == Bindings.STRING) {
			graph.claim(element.getData(), l0.InstanceOf, l0.String);
			graph.claimValue(element.getData(), string, binding);
		} else if (binding == Bindings.INTEGER) {
			graph.claim(element.getData(), l0.InstanceOf, l0.Integer);
			graph.claimValue(element.getData(), Integer.parseInt(string), binding);
		} else if (binding == Bindings.FLOAT) {
			graph.claim(element.getData(), l0.InstanceOf, l0.Float);
			graph.claimValue(element.getData(), Float.parseFloat(string), binding);
		} else if (binding == Bindings.DOUBLE) {
			graph.claim(element.getData(), l0.InstanceOf, l0.Double);
			graph.claimValue(element.getData(), Double.parseDouble(string), binding);
		} else if (binding == Bindings.BOOLEAN) {
			graph.claim(element.getData(), l0.InstanceOf, l0.Boolean);
			graph.claimValue(element.getData(), Boolean.parseBoolean(string), binding);
		} else if (binding == Bindings.LONG) {
			graph.claim(element.getData(), l0.InstanceOf, l0.Long);
			graph.claimValue(element.getData(), Long.parseLong(string), binding);
		} else if (binding == Bindings.BYTE) {
			graph.claim(element.getData(), l0.InstanceOf, l0.Byte);
			graph.claimValue(element.getData(), Byte.parseByte(string), binding);
		} else {
			throw new DatabaseException("Unknown datatype " + binding);
		}
	}

}