package examples.servlets;

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

import weblogic.html.*;
import weblogic.utils.*;

/**
 * This simple servlet sends a form requesting a name and an email address. 
 * When form data is posted back from the browser, email is send to the 
 * address given using the name given. 
 *
 * @author Copyright (c) 1996-98 by WebLogic, Inc. All Rights Reserved.
 * @author Copyright (c) 1999 by BEA WebXpress. All Rights Reserved.
 */
public class MailServlet extends HttpServlet {

  /**
   * Implements the HttpServlet service() method. 
   * This uses an htmlKona FormServlet to take the user's input, which
   * is formatted into an email message and posted.
   */
  public synchronized void service(HttpServletRequest req, HttpServletResponse res)
       throws IOException
  {
    res.setContentType("text/html");
    
    ServletPage sp = new ServletPage("Mail Servlet");
    sp.getBody()
      .addElement(MarkupElement.BeginParagraph)
      .addElement(new HeadingElement("Form Reply"))
      .addElement(MarkupElement.EndParagraph);
    
    String name = (String) req.getParameter("name");
    String email = (String) req.getParameter("email");
    if ((name != null)
        && (name.length() > 0)
        && (email != null)
        && (email.length() > 0)) {
      try {
        MailUtils.sendMail("mail",
                           "somebody@texashardhats.com",
                           email,
                           "Thanks!",
                           "Hello " + name + ",\n\n" +
                           "Thanks from the HardHat Team!\n\n" +
                           "(email generated by MailServlet).\n");
        sp.getBody()
             .addElement(new StringElement("Your thank you message is on its way!"));
      }
      catch (Exception e) {
        e.printStackTrace();
        sp.getBody()
             .addElement(new StringElement("Sorry, we could not send mail: " + e));
      }
      
    }
    else {
      // Not complete; create a form for input
      FormElement form = new FormElement("/mail", "POST");
      TableElement te  = new TableElement();
      te.addElement(new TableRowElement()
                    .addElement(new BoldElement("Email address:"))
                    .addElement(new InputElement("email")
                                .setSize(30)
                                .setMaxlen(40)
                                .setValue(email)))
           .addElement(new TableRowElement()
                       .addElement(new BoldElement("Name:"))
                       .addElement(new InputElement("name")
                                   .setSize(30)
                                   .setMaxlen(40)
                                   .setValue(name)))
           .addElement(new TableRowElement()
                       .addElement(new TableDataElement
                                   (new InputElement
                                    ("SUBMIT",
                                     FieldType.submit)
                                    .setValue("Register"))
                                   .setColSpan(2)));
      // Add the table to the Form	     
      form.addElement(te);
      // Add the form to the page
      sp.getBody()
           .addElement(form);
    }
    sp.output(res.getOutputStream());
  }
  
  /**
   * Info about the servlet.
   */
  public String getServletInfo() {
    return "This mail servlet sends email";
  }
}