package int_2.servlets.assignments3;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

import int_2.servlets.*;
import int_2.tools.*;

/**
Please respect the copyright of this code. It is not allowed to copy this code and use at any circumstances.
@author		<a href="mailto:fredand44@hotmail.com">&copy; Fredrik Andersson</a><br>

This servlet uses code from my home made toolbox that you can find in the folder 8/tools and 8/beans.
The toolbox is not ready yet, I have been working for it for a couple of years when I have time.
The goal is to get a toolbox of classes so it will be easier to map tasks to
use-case-diagram.

This servlet prints out the counter from assignment 1a with HTML instead of txt.
*/
public class SecureFileAccess_3a extends GeneralServlet
{
	public void start(HttpServletRequest request, HttpServletResponse response) throws IOException
	{
		String output = createPage("applications/int_2/int_2/templates/code_separation_3a.html", "code_separation_3a");

		String counterString = "";
		synchronized(this)
		{
			try
			{
				counterString = FileManager.getStringFor("applications/int_2/int_2/templates/1a.txt");
				int counter = Integer.parseInt(counterString);
				counterString = ""+(++counter);
				FileManager.writeString("applications/int_2/int_2/templates/1a.txt", counterString, false);
			}
			catch(Exception e)
			{
				counterString = "1";
				FileManager.writeString("applications/int_2/int_2/templates/1a.txt", counterString, false);
			}
		}

		output = TextManager.replaceInString(output, "XXXVISITORSXXX", counterString);

		printString(output);
		flush();
	}
}