package com.studentersamfundet.app;

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

public class XmlParser {
		private static DataHandler dh;
		
		public XmlParser() {
			 dh = new DataHandler();
		}
	
		public DataHandler parse(NodeList itemNodes) {
			String id = "";
            String title = "";
            String description = "";
            String date = "";
            String location = "";
            String text = "";
            String category = "";
            // String pictureUrl = ""; Necessary?
            
            for (int i = 0; i < itemNodes.getLength(); i++) { 
                Node itemNode = itemNodes.item(i); 
                
                if (itemNode.getNodeType() == Node.ELEMENT_NODE) {            
                    // Convert the Node into an Element.
                    Element itemElement = (Element) itemNode;
                    
                    // Get all elements under the <item> element.
                    NodeList idNodes = (itemElement).getElementsByTagName("id");
                    NodeList titleNodes = (itemElement).getElementsByTagName("title");
                    NodeList descriptionNodes = (itemElement).getElementsByTagName("description");
                    NodeList dateNodes = (itemElement).getElementsByTagName("date");
                    NodeList locationNodes = (itemElement).getElementsByTagName("location");
                    NodeList textNodes = (itemElement).getElementsByTagName("content");
                    NodeList categoryNodes = (itemElement).getElementsByTagName("category");
                    
                    // Convert a Node into an Element.
                    Node idElement = idNodes.item(0);
                    Node titleElement = titleNodes.item(0);
                    Node descriptionElement = descriptionNodes.item(0);
                    Node dateElement = dateNodes.item(0);
                    Node locationElement = locationNodes.item(0);
                    Node textElement = textNodes.item(0);
                    Node categoryElement = categoryNodes.item(0);
                    
                    // Get all the child nodes.
                    NodeList idTextNodes = idElement.getChildNodes();
                    NodeList titleTextNodes = titleElement.getChildNodes();
                    NodeList descriptionTextNodes = descriptionElement.getChildNodes();
                    NodeList dateTextNodes = dateElement.getChildNodes();
                    NodeList locationTextNodes = locationElement.getChildNodes();
                    NodeList textTextNodes = textElement.getChildNodes();
                    NodeList categoryTextNodes = categoryElement.getChildNodes();
                    
                    // Retrieve the text.
                    id = idTextNodes.item(0).getNodeValue(); // mandatory
                    title = titleTextNodes.item(0).getNodeValue(); // mandatory
                    if (descriptionTextNodes.getLength() > 0) 	description = descriptionTextNodes.item(0).getNodeValue();
                    if (dateTextNodes.getLength() > 0) 			date = dateTextNodes.item(0).getNodeValue();
                    if (locationTextNodes.getLength() > 0) 		location = locationTextNodes.item(0).getNodeValue();
                    if (textTextNodes.getLength() > 0) 			text = textTextNodes.item(0).getNodeValue();
                    if (categoryTextNodes.getLength() > 0) 		category = categoryTextNodes.item(0).getNodeValue();
                    
                    dh.insert(id, title, description, date, location, text, category);
                }
            }
            return dh;
		}
}