package dk.thoerup.side9;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;


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

import android.util.Log;



public class Side9Xml {
	
	static final int WIDTH = 450;
	static final String BASEURL = "http://apps.todic.net/side9/"; 

	public static Document parseXML(byte data[]) throws SAXException, IOException, ParserConfigurationException
	{
		DocumentBuilder builder =  DocumentBuilderFactory.newInstance().newDocumentBuilder();
		
		return  builder.parse( new ByteArrayInputStream( data)  );		
	}
	
	
	public static byte[] getContent(String uri) throws IOException {
		byte buffer[] = new byte[4096];
		

		
		ByteArrayOutputStream baos = new ByteArrayOutputStream(32768); //start buffer size - instead of default 32bytes
		
		URL url = new URL(uri);
		URLConnection connection = url.openConnection();
		connection.setConnectTimeout(2500);
		InputStream is = connection.getInputStream();
		
		try {
			int count;
			while ( (count = is.read(buffer)) != -1) {
				baos.write(buffer, 0, count);
			}
		} finally {
			try {
				is.close();
				baos.close();
			} catch (Exception e) {} //never mind if close throws an exception
		}
				
		return baos.toByteArray();
	}
	
	public static Side9Data loadXml() throws IOException, ParserConfigurationException, SAXException{
		String dataURL = BASEURL + "xml.php?width=" + WIDTH;
		
		byte data[] = getContent( dataURL );		
		Document doc = parseXML( data );		
		
		Node rootNode = doc.getDocumentElement(); // stations
		NodeList nodes = rootNode.getChildNodes();
		
		Side9Data side9Data = new Side9Data();
		
		for (int i=0; i<nodes.getLength(); i++) {
			Node currentNode = nodes.item(i);
			
			String name = currentNode.getNodeName();
			String content = null;
			
			if (currentNode.getFirstChild() != null)
				content = currentNode.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value

			
			if (name.equals("imageurl")) 
				side9Data.url = BASEURL + content;
			if (name.equals("width"))
				side9Data.width = Integer.parseInt(content);			
			if (name.equals("height"))
				side9Data.height = Integer.parseInt(content);
			if (name.equals("caption"))
				side9Data.caption = content;
		}
		
		Log.i("Side9Xml", "url:  " + side9Data.url);
		Log.i("Side9Xml", "size: " + side9Data.width + "/" + side9Data.height);
		Log.i("Side9Xml", "capt: " + side9Data.caption);
		
				
		
		
		
		return side9Data;
	}
	
}