import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.*;
import com.sentilla.host.client.HostClient;
import com.sentilla.net.SenderDriver;
import com.sentilla.net.Sender;

/**
 * Downloads an xml file from gmail, 
 * parses the number of undread messages, 
 * and sends it to a JCreate running GmailMoteApp
 *
 * @author  <a href="dan@sentilla.com">Dan Steingart</a>
 */

public class GmailClientApp {

	public static void main(String[] args) 
	{

		//Fill in gmail info
		String name = "foo@gmail.com"; //expects someone@gmail.com
		String password = "abc123";  //expects your password, don't worry, we're using HTTPS 
	
		//Create Connection To host
		HostClient host = new HostClient();
		try
		{
			host.connect(); 
		}
		catch (Exception e){}

		//Create Sender
		Sender sender = SenderDriver.create("local");
		
		//Create GmailMoteApp object to send out
		GmailMoteApp.GmailCount out = new GmailMoteApp.GmailCount();
		
		while (true)
		{
			try 
			{
				//Create SSL authentication, send to gmail, get XML
				Authenticator.setDefault(new MyAuthenticator(name,password));
				URL gmail = new URL("https://mail.google.com/gmail/feed/atom");
				BufferedReader in =  new BufferedReader(
									new InputStreamReader(
								gmail.openStream()));

				//Check for message count
				String line = ""; 
				String total = "";
				while ((line = in.readLine()) != null )
				{
					if (line.contains("fullcount")) 
					{
						total = line.substring("<fullcount>".length(), line.length()- "</fullcount>".length());
					}
				}

				//Send message count to JCreate
				out.count = Integer.parseInt(total);
				sender.send(out);
				
				
				//Sleep for ten seconds
				Thread.sleep(10000);
				
			}
			catch (Exception e) 
			{
			
				e.printStackTrace();
			}
			
		
		}		
	}
	

	//Code from http://www.java-forums.org/java-net/7242-reading-urls-protected-http-authentication.html
	static class MyAuthenticator extends Authenticator {
	    private String username, password;

	    public MyAuthenticator(String user, String pass) {
	      username = user;
	      password = pass;
	    }

	    protected PasswordAuthentication getPasswordAuthentication() {
	      return new PasswordAuthentication(username, password.toCharArray());
	    }
	  }
}