import org.w3c.dom.*;
import com.sun.xml.parser.Resolver;
import com.sun.xml.tree.XmlDocument;
import org.xml.sax.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class WebDocumentDistribution extends HttpServlet{
	public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
		try{
			res.setContentType("text/html");

			PrintWriter out1 = new PrintWriter( res.getOutputStream(), true );
			System.out.println("check error " + out1.checkError());
			PrintWriter out = new PrintWriter(new FileWriter("c:\\outPut.html"));
			String info[][] = new String[3][2];

			info[0][0] = "User ID";
			info[0][1] = req.getParameter("userID");

			info[1][0] = "Application ID";
			info[1][1] = req.getParameter("applicationID");

			info[2][0] = "Document ID";
			info[2][1] = req.getParameter("documentID");

			System.out.println(info[0][0] + " " + info[0][1]);
			System.out.println(info[1][0] + " " + info[1][1]);
			System.out.println(info[2][0] + " " + info[2][1]);

			InputSource input = Resolver.createInputSource(new File (MASTERDTD));
			XmlDocument doc = XmlDocument.createXmlDocument (input, false);

			HTML error = null;
			if(fillInDocument("user" + info[0][1] + ".nfo", doc)){
				error = new HTML("ERROR");
				error.add(HTML.HEADING,"There is no userID " + info[0][1],false);
			}
			if(fillInDocument(info[1][1] + ".nfo", doc)){
				error = new HTML("ERROR");
				error.add(HTML.HEADING,"There is no applicationID " + info[1][1],false);
			}

			Element element = doc.getDocumentElement();
			element.setAttribute( "DocumentID", info[2][1]);


			NDDS docMaker = new NDDS(doc);
			docMaker.run();
			out1.println(docMaker.getHTML().getPage());
		}catch(Exception e){System.out.println(e);}
	}


	public static boolean fillInDocument(String nameFile, Document doc){
		BufferedReader br = null;
		try{
			br = new BufferedReader(new FileReader(PATH+nameFile));
		}catch(IOException ex){
			System.err.println(ex.getMessage() + " Error in opening a file");
			return false;
		}

		try{
			Element element = doc.getDocumentElement();
			while(br.ready()){
				String x = br.readLine();
				StringTokenizer str = new StringTokenizer(x, ":");
				element.setAttribute( str.nextToken(), str.nextToken() );
			}
		}catch(IOException e){
			System.err.println(e.getMessage() + " error in reading from the file");
		}
		return true;
	}

	public static final String MASTERDTD = "c:\\jswdk-1.0.1\\webpages\\WEB-INF\\servlets\\Master.dtd";
	public static final String PATH = "c:\\jswdk-1.0.1\\webpages\\WEB-INF\\servlets\\";
}