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package ch.ffhs.webE.action;
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import java.util.ArrayList;
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import java.util.List;
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import javax.servlet.http.HttpServletRequest;
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import org.apache.struts2.StrutsStatics;
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import ch.ffhs.webE.dao.UserDAOImpl;
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import ch.ffhs.webE.domain.User;
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import com.opensymphony.xwork2.Action;
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import com.opensymphony.xwork2.ActionContext;
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import com.opensymphony.xwork2.ActionSupport;
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import com.opensymphony.xwork2.ModelDriven;
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public class UserAction extends ActionSupport implements ModelDriven<User>
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{
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  private static final long serialVersionUID = 1L;
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  private User user = new User();
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  private List<User> userList = new ArrayList<User>();
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  private final UserDAOImpl userDAO = new UserDAOImpl();
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  @Override
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  public User getModel()
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  {
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    return this.user;
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  }
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  /**
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   * Executes the DB query to save the user
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   *
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   * @return
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   */
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  public String addOrUpdate()
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  {
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    this.userDAO.saveOrUpdateUser(this.user);
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    return Action.SUCCESS;
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  }
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  /**
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   * DB query for userList
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   *
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   * @return SUCCESS
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   */
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  public String list()
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  {
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    this.userList = this.userDAO.listUser();
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    return Action.SUCCESS;
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  }
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  public String edit()
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  {
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    int id = this.getIdParameter();
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    if (id > 0)
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    {
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      this.user = this.userDAO.listUserById(id);
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      return Action.SUCCESS;
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    }
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    else
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    {
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      return Action.ERROR;
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    }
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  }
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  /**
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   * Gets the ID Parameter for update / delete requests
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   *
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   * @return int from the ID request. If not set or wrong, it gives back -1
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   */
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  private int getIdParameter()
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  {
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    HttpServletRequest request = (HttpServletRequest) ActionContext
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        .getContext().get(StrutsStatics.HTTP_REQUEST);
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    int id = -1;
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    try
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    {
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      id = Integer.parseInt(request.getParameter("id"));
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    }
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    catch (Exception e)
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    {
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      // TODO: Logging - wrong parameter set
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    }
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    return id;
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  }
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  /**
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   * deletes a user, gets the ID from the "id" parameter that was submitted with
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   * the HTTP request
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   *
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   * @return String - either SUCCESS or ERROR constant
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   */
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  public String delete()
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  {
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    int id = this.getIdParameter();
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    // Check for malicious ID values
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    if (id > 0)
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    {
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      this.userDAO.deleteUser(id);
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      return Action.SUCCESS;
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    }
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    else
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    {
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      return Action.ERROR;
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    }
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  }
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  /*
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   * Standard getters and setters
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   */
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  public User getUser()
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  {
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    return this.user;
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  }
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  public void setUser(User user)
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  {
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    this.user = user;
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  }
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  public List<User> getUserList()
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  {
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    return this.userList;
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  }
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  public void setUserList(List<User> userList)
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  {
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    this.userList = userList;
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  }
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}