package com.oreilly.jent.struts.library.ui;

/**
 * In general, you may use the code in this book in your programs and 
 * documentation. You do not need to contact us for permission unless 
 * you're reproducing a significant portion of the code. For example, 
 * writing a program that uses several chunks of code from this book does 
 * not require permission. Selling or distributing a CD-ROM of examples 
 * from O'Reilly books does require permission. Answering a question by 
 * citing this book and quoting example code does not require permission. 
 * Incorporating a significant amount of example code from this book into 
 * your product's documentation does require permission.
 * 
 * We appreciate, but do not require, attribution. An attribution usually 
 * includes the title, author, publisher, and ISBN. For example: 
 * 
 *   "Java Enterprise in a Nutshell, Third Edition, 
 *    by Jim Farley and William Crawford 
 *    with Prakash Malani, John G. Norman, and Justin Gehtland. 
 *    Copyright 2006 O'Reilly Media, Inc., 0-596-10142-2."
 *  
 *  If you feel your use of code examples falls outside fair use or the 
 *  permission given above, feel free to contact us at 
 *  permissions@oreilly.com.
 */

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.oreilly.jent.struts.library.logic.UserManager;
import com.oreilly.jent.struts.library.model.User;
import com.oreilly.jent.struts.library.session.UserSession;

public class LoginAction extends LibraryBaseAction {

  public ActionForward execute(ActionMapping mapping, ActionForm form,
      HttpServletRequest request, HttpServletResponse response)
      throws Exception {

    // (1) Java code version of the LoginForm
  LoginActionForm loginForm = (LoginActionForm) form;
  String username = loginForm.getUsername();
  String password = loginForm.getPassword();

    // (2) DynaValidatorForm version of the LoginForm
//      DynaActionForm loginForm = (DynaActionForm) form;
//      String username = (String) loginForm.get("username");
//      String password = (String) loginForm.get("password");

    UserSession userSession = getUserSession(request);

    if (UserManager.confirmLogin(username, password)) {
      User user = UserManager.getUser(username);
      userSession.setCurrentUser(user);
      return mapping.findForward("success");
    }

    ActionMessages errors = new ActionMessages();
    errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
        "errors.credentials.login"));
    saveErrors(request, errors);

    return mapping.findForward("failure");

  }
}