public override async Task OnStartAsync(StartKind startKind, IActivatedEventArgs args)
{
// long-running startup tasks go here
var activated = false;
var kind = args as ProtocolActivatedEventArgs;
if (kind != null)
{
activated = true;
var results = kind.Uri.Query;
var code = string.Empty;
var state = string.Empty;
var expires = string.Empty;
var error = string.Empty;
var errorDescription = string.Empty;
foreach (var arg in results.Split('&'))
{
string[] parts = arg.Replace("?", string.Empty).Split('=');
if (parts[0] == "code")
{
code = parts[1];
}
if (parts[0] == "state")
{
state = parts[1];
}
if (parts[0] == "expires")
{
expires = parts[1];
}
if (parts[0] == "error")
{
error = parts[1];
}
if (parts[0] == "errorDescription")
{
errorDescription = parts[1];
}
}
var parameter = new LoginPageNavigationModel()
{
Code = code,
State = state,
Expires = expires,
Error = error,
ErrorDescription = errorDescription
};
SettingsService.IsFullScreen = false;
SettingsService.ShowHamburgerButton = true;
NavigationService.Navigate(typeof(Views.LoginPage), parameter);
}
if (!activated)
{
if (SettingsService.AuthenticatedUser != null)
{
SettingsService.IsFullScreen = false;
SettingsService.ShowHamburgerButton = true;
NavigationService.Navigate(typeof(Views.MyRecentSessionsPage));
}
else
{
SettingsService.IsFullScreen = true;
SettingsService.ShowHamburgerButton = false;
NavigationService.Navigate(typeof(Views.LoginSignupPage));
}
}
await Task.CompletedTask;
}
public override async Task OnNavigatedToAsync(object parameter, NavigationMode mode, IDictionary <string, object> suspensionState)
{
if (suspensionState.ContainsKey(nameof(NavigationParameter)))
{
var navParameter = suspensionState[nameof(NavigationParameter)] as LoginPageNavigationModel;
NavigationParameter = navParameter;
}
if (parameter != null)
{
var zero = parameter as string;
if (zero == null)
{
var navParameter = parameter as LoginPageNavigationModel;
NavigationParameter = navParameter;
}
}
if (NavigationParameter != null && (!string.IsNullOrEmpty(NavigationParameter.Error) || !string.IsNullOrEmpty(NavigationParameter.ErrorDescription)))
{
// this means that login created an error
}
if (NavigationParameter != null && !string.IsNullOrEmpty(NavigationParameter.Code))
{
_client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", "XXX");
var request = new HttpRequestMessage(HttpMethod.Post, "https://api.quizlet.com/oauth/token");
var formData = new List <KeyValuePair <string, string> >();
formData.Add(new KeyValuePair <string, string>("grant_type", "authorization_code"));
formData.Add(new KeyValuePair <string, string>("code", NavigationParameter.Code));
request.Content = new FormUrlEncodedContent(formData);
var response = await _client.SendAsync(request);
var content = await response.Content.ReadAsStringAsync();
if (response.IsSuccessStatusCode)
{
var json = JsonConvert.DeserializeObject <Authentication.Success>(content);
var userSettings = new UserSettings()
{
UserId = json.user_id,
Token = json.access_token,
Scope = json.scope,
TokenType = json.token_type,
Expiration = json.expires_in,
Created = DateTime.UtcNow
};
_SettingsService.UserSettings = userSettings;
LogInOutText = "Log out";
await FetchAndSaveUser(userSettings.UserId);
}
else
{
//todo: there was an error
}
}
// load the page with data...
if (_SettingsService.UserSettings != null)
{
UserId = _SettingsService.UserSettings.UserId;
LogInOutText = "Log out";
try
{
var user = await _quizletAPI.GetUser(UserId);
if (user.Profile_Image != null)
{
ProfilePictureSrc = new Uri(user.Profile_Image);
}
if (user.AccountType != null)
{
AccountType = user.AccountType;
}
if (user.Statistics != null)
{
TermsCreated = user.Statistics.PublicTermsEntered.ToString();
}
if (user.Statistics != null)
{
SetsCreated = user.Statistics.PublicSetsCreated.ToString();
}
// update the shell to reflect the new authenticated user
Views.Shell.Instance.UpdateUserImage();
}
catch (Exception e)
{
var dialog = new MessageDialog($"Error: {e.Message}");
await dialog.ShowAsync();
return;
}
}
if (_SettingsService.AuthenticatedUser != null)
{
LogInOutText = "Log out";
}
await Task.CompletedTask;
}
