package com.bitrazor.test;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;
import java.util.List;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;

import com.bitrazor.jaxb.regionmaster.Region;
import com.bitrazor.jaxb.regionmaster.RegionDescriptionFileURLs;
import com.bitrazor.jaxb.regionmaster.Regions;

public class Main {
	public static final String masterURL = "http://bitrazor.com/content/tivo/hme/trafficcam/RegionMaster.xml";

	public static final String jaxbPackage = "com.bitrazor.jaxb.regionmaster";

	public static void main(String[] args) {

		JAXBContext jc = Main.setContext(jaxbPackage);

		Unmarshaller u = Main.getUnmarshaller(jc);

		Regions regions = Main.getRegions(masterURL, u);

		// regionList get assigned to the first region in regions
		List regionList = regions.getRegion();

		// For each region
		for (Iterator iter = regionList.iterator(); iter.hasNext();) {
			toString((Region) iter.next());
		}
	}

	// Display contents for a region to the console. This should be called
	// for each region in the RegionMaster file.
	public static void toString(Region region) {
		System.out.println("Region found:");
		System.out.println("  ID: " + region.getRegionID() + ", Name: "
				+ region.getRegionName());

		RegionDescriptionFileURLs rdfurls = (RegionDescriptionFileURLs) region
				.getRegionDescriptionFileURLs();
		List rdfUrlList = rdfurls.getRegionDescriptionFileURL();

		// Print out each RDF URL
		for (Iterator rdfurl = rdfUrlList.iterator(); rdfurl.hasNext();) {
			System.out.println("  URL: " + rdfurl.next());
		}

	}

	public static JAXBContext setContext(String jaxbPackage) {
		JAXBContext jc = null;
		try {

			// Set the JAXB context to the package name we uses
			// when we created all the JAXB classes from the XSD
			jc = JAXBContext.newInstance(jaxbPackage);
		} catch (JAXBException e) {
			e.printStackTrace();
		}
		return jc;
	}

	public static Unmarshaller getUnmarshaller(JAXBContext jc) {
		Unmarshaller u = null;

		try {
			// Create an unmarshaller (unmarshal from XML to Java objects)
			u = jc.createUnmarshaller();
		} catch (JAXBException e) {
			e.printStackTrace();
		}
		return u;
	}

	public static Regions getRegions(String masterURL, Unmarshaller u) {
		Regions regions = null;
		
		try {
			URL url = new URL(masterURL);
			// Use the following line to read from a file instead of a URL:
			// regions = (Regions)u.unmarshal(new
			// FileInputStream("RegionMaster.xml"));
			regions = (Regions) u.unmarshal(url);
		} catch (JAXBException e) {
			e.printStackTrace();
		} catch (MalformedURLException e) {
			e.printStackTrace();
		}
		return regions;
	}

}