package com.prognoz;

import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/FilesReestrServlet")
public class FileRegisterServlet extends HttpServlet{
	private String						param;
	private static final long	serialVersionUID	= 1L;

	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{

		param = getServletContext().getInitParameter("dirToShow");

		response.setContentType("text/html");
		response.setCharacterEncoding("utf-8");
		ServletOutputStream out = response.getOutputStream();

		File reestr = new File(getServletContext().getRealPath(param));

		param = getServletContext().getContextPath()+"/"+param;

		File[] fileList = reestr.listFiles();

		out.println("<H2><FONT COLOR=TEAL>"+
								"Total number of files in the choosen directory - "+
								fileList.length+"</FONT></H2>");

		out.println("<H3><FONT COLOR=PURPLE>"+
								"Directory path - "+
								param+
								"</FONT></H3><HR>");

		out.println("<TABLE BORDER=0 CELLSPACING=5>");

		for(File element: fileList)
			printName(element, out);

		out.println("</TABLE><HR>");

	}

	private void printName(File name, ServletOutputStream out)
	{
		try
		{
			
			out.write(("<tr><td><a href=\""+param+"\\"+name.getName()+"\">"+name.getName()+"</a></td></tr>").getBytes("utf-8"));
					
		}
		catch(UnsupportedEncodingException e){
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		catch(IOException e){
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	@Override
	public String getServletInfo()
	{
		return "This servlet shows a content of a directory"+
						"mentioned in dirToShow parameter or property.";
	}
}