package org.litesoft.servlets;

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

import org.litesoft.util.*;
import org.litesoft.util.template.*;

public class LoginPageServlet extends UnauthenticatedTemplateServlet
{
    public LoginPageServlet()
    {
        super( null );
    }

    protected TemplateControl resolveQuery( HttpServletRequest pRequest, String pQuery, HttpServletResponse pResponse, HttpSession pSession )
            throws IOException
    {
        CookieAuthenticator.remove( pRequest, pResponse );

        AuthenticationObject zAO = AuthenticationObject.get( pSession );

        String zTemplateFilePath = Utils.noEmpty( getServletConfig().getInitParameter( "TemplateFilePath" ) );
        if ( zTemplateFilePath != null )
        {
            File zFile = new File( zTemplateFilePath );
            if ( zFile.isFile() )
            {
                return new TemplateControl( new FileReader( zFile ), //
                                            "UserName", zAO.getUserName(), //
                                            "Message", zAO.getMessage() );
            }
            return new TemplateControl( NO_FILE, //
                                        "UserName", zAO.getUserName(), //
                                        "Message", zAO.getMessage() );
        }
        return new TemplateControl( NO_TEMPLATE_PATH, //
                                    "UserName", zAO.getUserName(), //
                                    "Message", zAO.getMessage() );
    }

    private static final String NO_FILE = "";
    private static final String NO_TEMPLATE_PATH = "";
}