package com.opentravelsoft.webapp.action;

import java.util.ArrayList;
import java.util.List;

import com.opentravelsoft.entity.Member;
import com.opentravelsoft.webapp.util.RequestUtil;
import org.springframework.mail.MailException;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

/**
 * Action class to send password hints to registered users.
 * 
 */
public class PasswordHintAction extends PortalAction {
  private static final long serialVersionUID = -4037514607101222025L;
  private String username;

  /**
   * @param username The username to set.
   */
  public void setUsername(String username) {
    this.username = username;
  }

  /**
   * Execute sending the password hint via e-mail.
   * 
   * @return success if username works, input if not
   */
  public String execute() {
    List<Object> args = new ArrayList<Object>();

    // ensure that the username has been sent
    if (username == null) {
      log.warn("Username not specified, notifying user that it's a required field.");

      args.add(getText("member.username"));
      addActionError(getText("errors.requiredField", args));
      return INPUT;
    }

    if (log.isDebugEnabled()) {
      log.debug("Processing Password Hint...");
    }

    // look up the user's information
    try {
      Member user = userManager.getUserByUsername(username);
      String hint = user.getPasswordHint();

      if (hint == null || hint.trim().equals("")) {
        log.warn("User '" + username + "' found, but no password hint exists.");
        addActionError(getText("login.passwordHint.missing"));
        return INPUT;
      }

      StringBuffer msg = new StringBuffer();
      msg.append("Your password hint is: ").append(hint);
      msg.append("\n\nLogin at: ").append(RequestUtil.getAppURL(getRequest()));

      mailMessage.setTo(user.getEmail());
      String subject = '[' + getText("webapp.name") + "] "
          + getText("member.passwordHint");
      mailMessage.setSubject(subject);
      mailMessage.setText(msg.toString());
      mailEngine.send(mailMessage);

      args.add(username);
      args.add(user.getEmail());

      saveMessage(getText("login.passwordHint.sent", args));
    } catch (UsernameNotFoundException e) {
      log.warn(e.getMessage());
      args.add(username);
      addActionError(getText("login.passwordHint.error", args));
      getSession().setAttribute("errors", getActionErrors());
      return INPUT;
    } catch (MailException me) {
      addActionError(me.getCause().getLocalizedMessage());
      getSession().setAttribute("errors", getActionErrors());
      return INPUT;
    }

    return SUCCESS;
  }
}