private void SwitchToTheMainApplication(IClosableScreen thisLoginScreen, Person connectedUser)
{
ApplicationMainWindow appMainWindow = new ApplicationMainWindow();
ApplicationViewModel context = new ApplicationViewModel(connectedUser, _messageBoxService);
appMainWindow.DataContext = context;
appMainWindow.Show();
// Close this Login Window
thisLoginScreen.CloseScreen();
}
/// <summary>
/// Closes the application and returns to the login menu
/// </summary>
/// <param name="thisApplicationScreen">ICloseableScreen object to close the application</param>
private void LogoutUser(IClosableScreen thisApplicationScreen)
{
// Launch the login window
LoginWindow appLoginWindow = new LoginWindow();
LoginViewModel context = new LoginViewModel(_messageBoxService);
appLoginWindow.DataContext = context;
appLoginWindow.Show();
// Close this Window
thisApplicationScreen.CloseScreen();
}
/// <summary>
/// Try to login with the input username and password.
/// </summary>
/// <param name="parameter">IHavePassword object that contains the SecureString input password, and that is also IClosableScreen</param>
private void AttemptLoginCommand(object parameter)
{
SecureString password = (parameter as IHavePassword).SecurePassword;
var validInput = CheckLoginInputValidity(Username, password);
IClosableScreen thisScreen = (parameter as IClosableScreen);
if (validInput.Valid)
{
// Unsecure the password to compare it to the DB - in a proper implementation, the hashed passwords would be compared, but for simplicity
// we check it unsecured (and the DB holds passwords in plain text for the same reason).
var unsecuredPassword = password.Unsecure();
// Search for the user in the DB.
User connectedAccount = _mySchoolModel.Users.SingleOrDefault(user => user.username == Username && user.password == unsecuredPassword);
// If the user is found, connect as it and open the application.
if (connectedAccount != null && !connectedAccount.isDisabled)
{
// Ask the user to change his password before continuing
if (connectedAccount.hasToChangePassword)
{
NewPasswordWindow newPasswordDialog = new NewPasswordWindow();
NewPasswordViewModel newPasswordDialogVM = new NewPasswordViewModel(_mySchoolModel, connectedAccount);
newPasswordDialog.DataContext = newPasswordDialogVM;
newPasswordDialog.ShowDialog();
}
// Launch the application main window with the connected user account
SwitchToTheMainApplication(thisScreen, connectedAccount.Person.Single());
}
// Report incorrect user credentials error.
else
{
_messageBoxService.ShowMessage("שם המשתמש ו/או הסיסמא שגויים!", "Login Failed!", MessageType.OK_MESSAGE, MessagePurpose.ERROR);
}
}
// Report invalid credentials error.
else
{
_messageBoxService.ShowMessage(validInput.ErrorReport, "Login Failed!", MessageType.OK_MESSAGE, MessagePurpose.ERROR);
}
}
