package dom;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Arrays;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import objekti.Hrana;

public class DomBranje {

	public static Hrana hrana = new Hrana();
	public static ArrayList<Hrana> seznamHrane = new ArrayList<Hrana>();
	public static DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();

	public static void main (String[] args) throws TransformerException, ParserConfigurationException, IOException, SAXException{
		ParseXML();
		ArrayList<Integer> idHrane = kolicinaManjKot10000();
		System.out.println(ustvariNovXML(idHrane));
		validacijaSheme();

	}

	private static void ParseXML(){
    	try {
    		File fXmlFile = new File("C:/Users/Urban Kos/Documents/Šola/3. Letnik/KIS/VAJE/2_Sklop_Nalog/2_SeznamHrane.xml");
    		DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
    		DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
    		Document doc = dBuilder.parse(fXmlFile);

    		//optional, but recommended
    		//read this - http://stackoverflow.com/questions/13786607/normalization-in-dom-parsing-with-java-how-does-it-work
    		doc.getDocumentElement().normalize();
    		System.out.println("Root element :" + doc.getDocumentElement().getNodeName());
    		NodeList nList = doc.getElementsByTagName("hrana");
    		System.out.println("----------------------------");

    		for (int temp=0; temp < nList.getLength(); temp++) {
    			hrana = new Hrana();

    			Node nNode = nList.item(temp);
    			if (nNode.getNodeType() == Node.ELEMENT_NODE) {
    				Element eElement = (Element) nNode;

    				System.out.println(eElement.getNodeName());

    				hrana.setId(Long.parseLong(eElement.getAttribute("id")));
    				hrana.setNazivTip(eElement.getElementsByTagName("naziv").item(0).getAttributes().getNamedItem("tip").getNodeValue());
    				hrana.setNaziv(eElement.getElementsByTagName("naziv").item(0).getTextContent());

    				try{
    					String vrsta = eElement.getElementsByTagName("vrsta").item(0).getTextContent();
						hrana.setVrsta(vrsta);
					}catch(Exception e){
						hrana.setVrsta("/");
					}

    				hrana.setKolicinaEnota(eElement.getElementsByTagName("količina").item(0).getAttributes().getNamedItem("enota").getNodeValue());
    				hrana.setKolicina(Double.parseDouble(eElement.getElementsByTagName("količina").item(0).getTextContent()));
    				hrana.setCasEnota(eElement.getElementsByTagName("cas").item(0).getAttributes().getNamedItem("enota").getNodeValue());
    				hrana.setCas(Double.parseDouble(eElement.getElementsByTagName("cas").item(0).getTextContent()));
    				hrana.setDrzava(eElement.getElementsByTagName("drzava").item(0).getTextContent());
    				hrana.setPrst(eElement.getElementsByTagName("prst").item(0).getTextContent());
    				hrana.setVlaznost(eElement.getElementsByTagName("vlažnost").item(0).getTextContent());
    				hrana.setTemperaturaEnota(eElement.getElementsByTagName("temperatura").item(0).getAttributes().getNamedItem("enota").getNodeValue());
    				hrana.setTemperatura(Double.parseDouble(eElement.getElementsByTagName("temperatura").item(0).getTextContent()));
    				hrana.setTransID(eElement.getElementsByTagName("transport").item(0).getAttributes().getNamedItem("idTrans").getNodeValue());
    				hrana.setTransCas(eElement.getElementsByTagName("transport").item(0).getAttributes().getNamedItem("cas").getNodeValue());
    				hrana.setTransDatum(eElement.getElementsByTagName("transport").item(0).getAttributes().getNamedItem("datumPoslano").getNodeValue());
    				hrana.setStanjeTip(eElement.getElementsByTagName("stanje").item(0).getAttributes().getNamedItem("tip").getNodeValue());
    				hrana.setStanje(eElement.getElementsByTagName("stanje").item(0).getTextContent());

    				seznamHrane.add(hrana);
    			}

    		}

	    } catch (Exception e) {
		e.printStackTrace();
	    }

    }

	public static ArrayList<Integer> kolicinaManjKot10000(){
		int stevilo = seznamHrane.size();
		double kolicina=0;
		ArrayList<Integer> idHrane = new ArrayList<Integer>();

		if(seznamHrane.isEmpty()!=true){
			for(int i=0; i<stevilo; i++){
				kolicina = seznamHrane.get(i).getKolicina();
				if(kolicina<10000){
					idHrane.add(i);
					System.out.println(i);
				}
			}
		}

		return idHrane;
	}

	public static String ustvariNovXML(ArrayList<Integer> idHrane) throws TransformerException, ParserConfigurationException, IOException{
		DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
		Document docNov = dBuilder.newDocument();
		int dolzina = idHrane.size();

		File rez = new File("8_DOM_XML_File.xml");
		if (rez.createNewFile()){
	        System.out.println("File is created!");
		}else{
			System.out.println("File already exists.");
		}
		OutputStream out = new BufferedOutputStream(new FileOutputStream(rez));

		Element rootElement = docNov.createElement("seznamRezultatov");
		rootElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns", "http://www.example.org/Hrana");
		rootElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:h", "http://www.example.org/Hrana");
		rootElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");

		Element seznam = docNov.createElement("seznam");
		Element rezultat=null, naziv=null, kolicina=null, vrsta=null, transport=null;

		for(int i=0; i<dolzina; i++){
			rezultat = docNov.createElement("rezultat");
			naziv = docNov.createElement("naziv");
			kolicina = docNov.createElement("kolicina");
			vrsta = docNov.createElement("vrsta");
			transport = docNov.createElement("transport");

			naziv.setTextContent(seznamHrane.get(idHrane.get(i)).getNaziv());
			kolicina.setTextContent(String.valueOf(seznamHrane.get(idHrane.get(i)).getKolicina()));
			vrsta.setTextContent(seznamHrane.get(idHrane.get(i)).getVrsta());
			transport.setTextContent(seznamHrane.get(idHrane.get(i)).getTransID());

			rezultat.appendChild(naziv);
			rezultat.appendChild(kolicina);
			rezultat.appendChild(vrsta);
			rezultat.appendChild(transport);
			seznam.appendChild(rezultat);
		}

		rootElement.appendChild(seznam);
		docNov.appendChild(rootElement);



		TransformerFactory transformerFactory = TransformerFactory.newInstance();
		Transformer transformer = transformerFactory.newTransformer();
		DOMSource source = new DOMSource(docNov);
		StreamResult result = new StreamResult(out);
		transformer.transform(source, result);

		return "Skozi";
	}

//	VALIDACIJA SHEME -------------------------------------------------------------------------------------------------
	public static void validacijaSheme() throws IOException, SAXException, ParserConfigurationException{
		SchemaFactory factory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");

		File schemaLocation = new File("C:/Users/Urban Kos/Documents/Šola/3. Letnik/KIS/VAJE/2_Sklop_Nalog/3_Hrana.xsd");
		Schema schema = factory.newSchema(schemaLocation);
		Validator validator = schema.newValidator();

		DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
		domFactory.setNamespaceAware(true); // never forget this
		DocumentBuilder builder = domFactory.newDocumentBuilder();
		Document doc = builder.parse(new File("C:/Users/Urban Kos/Documents/Šola/3. Letnik/KIS/VAJE/2_Sklop_Nalog/8_DOM_XML_File.xml"));

		try {
			validator.validate(new DOMSource(doc));
			System.out.println("vse ok");
		}
			catch (SAXException ex) {
			System.out.println(" Napaka: " + ex.getMessage());
		}
	}

}