/// <summary>
/// Deserializes the saved users.
/// </summary>
private void DeserializeUsers()
{
XmlSerializer serializer = new XmlSerializer(typeof(User), typeof(User).GetNestedTypes());
string[] files = null;
try
{
files = Directory.GetFiles(USERSFOLDER).Where(i => i.EndsWith("xml")).ToArray();
}
catch (Exception ex)
{
Debug.WriteLine("Fatal error while deserializing users: " + ex.Message);
return;
}
foreach (var file in files)
{
try
{
using (StreamReader reader = new StreamReader(file))
{
User usr = (User)serializer.Deserialize(reader);
AvailableUsers.Add(usr);
}
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Error deserializing {0}: {1}", file, ex.Message));
}
}
}
/// <summary>
/// Deserializes the saved users.
/// </summary>
private void DeserializeUsers()
{
try
{
foreach (var file in _directoryOperator.GetFiles(USERSFOLDER).Where(i => i.EndsWith("xml")))
{
try
{
User usr = _userSerializer.Deserialize(file);
// connect and disconnect to serialize if recent scrobbles are different
usr.RecentScrobblesChanged += User_RecentScrobblesChanged;
usr.UpdateRecentScrobbles();
usr.RecentScrobblesChanged -= User_RecentScrobblesChanged;
AvailableUsers.Add(usr);
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Error deserializing {0}: {1}", file, ex.Message));
}
}
}
catch (Exception ex)
{
Debug.WriteLine("Fatal error while deserializing users: " + ex.Message);
return;
}
}
/// <summary>
/// Add a user to the list.
/// </summary>
public void AddUser()
{
if (_windowManager.ShowDialog(new LoginViewModel(_lastAuth, _windowManager.MessageBoxService)).Value)
{
User usr = new User(_lastAuth.UserSession.Username, _lastAuth.UserSession.Token, _lastAuth.UserSession.IsSubscriber);
AvailableUsers.Add(usr);
ActiveUser = usr;
SerializeUsers();
}
}
/// <summary>
/// Add a user to the list.
/// </summary>
public void AddUser()
{
if (_windowManager.ShowDialog(new LoginViewModel()).Value)
{
User usr = new User(MainViewModel.Client.Auth.UserSession.Username, MainViewModel.Client.Auth.UserSession.Token, MainViewModel.Client.Auth.UserSession.IsSubscriber);
AvailableUsers.Add(usr);
ActiveUser = usr;
SerializeUsers();
}
}
private void NewUserAvailable(UserViewModel user)
{
Guard.Against.Null(user, nameof(user));
user.UserSelectedCommand = UserSelectedCommand;
Device.BeginInvokeOnMainThread(() =>
{
AvailableUsers.Add(user);
RaisePropertyChanged(nameof(UsersCount));
});
}
/// <summary>
/// Allow choosing users that are from the specific selectedUserType
/// </summary>
/// <param name="selectedUserType">User type of available users. Expected values per const USER_TYPE_X fields</param>
private void ChangeAvailableUsers(string selectedUserType)
{
// Clean the available users from the previous choice of user types
AvailableUsers.Clear();
// Create a query all the editable users in the school from the specified type
IQueryable <Person> usersQuery;
switch (selectedUserType)
{
case Globals.USER_TYPE_STUDENT:
{
usersQuery = _schoolData.Persons.Where(person => person.isStudent);
break;
}
case Globals.USER_TYPE_PARENTS:
{
usersQuery = _schoolData.Persons.Where(person => person.isParent);
break;
}
case Globals.USER_TYPE_TEACHERS:
{
usersQuery = _schoolData.Persons.Where(person => person.isTeacher);
break;
}
case Globals.USER_TYPE_SECRETARIES:
{
usersQuery = _schoolData.Persons.Where(person => person.isSecretary);
break;
}
case Globals.USER_TYPE_PRINCIPAL:
{
usersQuery = _schoolData.Persons.Where(person => person.isPrincipal);
break;
}
default:
{
usersQuery = Enumerable.Empty <Person>().AsQueryable();
break;
}
}
// Create a list of all the editable users in the school
usersQuery.Where(person => !person.User.isDisabled).ToList().
ForEach(person => AvailableUsers.Add(person.personID, person.firstName + " " + person.lastName));
}
private void UpdateConnectedUser(List <UserViewModel> connectedUsers)
{
Guard.Against.Null(connectedUsers, nameof(connectedUsers));
Device.BeginInvokeOnMainThread(() =>
{
IsProcessing = true;
foreach (var user in connectedUsers)
{
user.UserSelectedCommand = UserSelectedCommand;
AvailableUsers.Add(user);
}
RaisePropertyChanged(nameof(UsersCount));
IsProcessing = false;
});
}
/// <summary>
/// Deserializes the saved users.
/// </summary>
private void DeserializeUsers()
{
try
{
foreach (var file in _directoryOperator.GetFiles(USERSFOLDER).Where(i => i.EndsWith("xml")))
{
try
{
User usr = _userSerializer.Deserialize(file);
AvailableUsers.Add(usr);
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Error deserializing {0}: {1}", file, ex.Message));
}
}
}
catch (Exception ex)
{
Debug.WriteLine("Fatal error while deserializing users: " + ex.Message);
return;
}
}
private void OnApplicationStateChanged(ApplicationState applicationState)
{
if (applicationState == ApplicationState.DisconnectedFromServer)
{
Application.Current.Dispatcher.Invoke(() =>
{
AvailableUsers.Clear();
AreConnectionSettingsVisible = true;
SelectedUser = null;
IsUserListAvailable = false;
});
}
if (applicationState == ApplicationState.ConnectedButNotLoggedIn)
{
AreConnectionSettingsVisible = false;
session.RequestUserList(
userList =>
{
Application.Current.Dispatcher.Invoke(async() =>
{
AvailableUsers.Clear();
userList.Do(userData => AvailableUsers.Add(userData));
IsUserListAvailable = true;
if (AvailableUsers.Count > 0)
{
SelectedUser = AvailableUsers.Any(user => user.Id == localSettingsRepository.LastLoggedInUserId)
? AvailableUsers.First(user => user.Id == localSettingsRepository.LastLoggedInUserId)
: AvailableUsers.First();
}
else
{
var dialog = new UserDialogBox("",
"Es sind keine verfügbaren User vorhanden\n" +
"Die Verbindung wird getrennt!",
MessageBoxButton.OK);
await dialog.ShowMahAppsDialog();
Disconnect.Execute(null);
}
});
},
errorMessage =>
{
Application.Current.Dispatcher.Invoke(async() =>
{
var dialog = new UserDialogBox("",
"Die Userliste kann nicht vom Server abgefragt werden:\n" +
$">> {errorMessage} <<\n" +
"Die Verbindung wird getrennt - versuchen Sie es erneut",
MessageBoxButton.OK);
await dialog.ShowMahAppsDialog();
Disconnect.Execute(null);
});
}
);
}
Application.Current.Dispatcher.Invoke(() =>
{
((ParameterrizedCommand <PasswordBox>)Login).RaiseCanExecuteChanged();
((Command)Connect).RaiseCanExecuteChanged();
((Command)DebugConnect).RaiseCanExecuteChanged();
((Command)Disconnect).RaiseCanExecuteChanged();
});
}
