package java112.project4;

import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.net.*;
import java112.employee.*;

/**
 *  This is the first Servlet for project 2, displaying an image and link back
 *  to the home page.
 *
 *@author     SRasmussen
 *@created    October 11, 2006
 */
public class AppInitServlet extends HttpServlet {

    private  Properties      properties  = new Properties();
    private  ServletConfig   config;
    private  ServletContext  context;


    /**
     *  This initialization method calls a method to load the properties object.
     *
     *@exception  ServletException  Description of the Exception Like a
     *      constructor, but no constructors in servlets.
     */
    public void init() throws ServletException {

        config = getServletConfig();
        context = config.getServletContext();
        loadProperties();
        context.setAttribute("props", properties);
        java112.employee.EmployeeDirectory  empDir  = new java112.employee.EmployeeDirectory();
        empDir.createEmployeesCollection(properties.getProperty("input.file"));
        context.setAttribute("directory", empDir);

    }


    /**
     *  Description of the Method
     *
     *@param  req                   Description of the Parameter
     *@param  res                   Description of the Parameter
     *@exception  ServletException  Description of the Exception
     *@exception  IOException       Description of the Exception
     */
    public void doGet(HttpServletRequest req, HttpServletResponse res)
             throws ServletException, IOException {
        res.setContentType("text/html");
        // set the response type before sending data
        PrintWriter  out  = res.getWriter();
        out.print("<HTML>");
        out.print("<HEAD><TITLE>");
        out.print(properties.getProperty("author.name"));
        out.print("'s Application Initialization Servlet</TITLE></HEAD>");
        out.print("<BODY>");
        out.print("<h2>");
        out.print(properties.getProperty("author.name"));
        out.print("'s Applicaiton Initialization Servlet</h2><br /><br />");
        out.print(context.getAttribute("props"));
        out.print(context.getAttribute("directory"));
        out.write("<img src=\"/images/coyoteFace.jpg\" alt=\"Desert Coyote\" /><br />");
        out.write("<br /><a href=\"/\">home page</a><br />");
        out.print("</BODY>");
        out.print("</HTML>");
        out.close();
    }


    /**
     *  This method loads the properties object with those key/value pairs found
     *  on the input properties file.
     */

    public void loadProperties() {
        try {
            properties.load(this.getClass().getResourceAsStream("/project4.properties"));
        }
        catch (IOException ioe) {
            System.out.println("Can't load the properties file");
            ioe.printStackTrace();
        }
        catch (Exception e) {
            System.out.println("Problem: " + e);
            e.printStackTrace();
        }
    }
}