public void SaveCredentials(IAptkAmaCredentials credentials)
{
if (credentials == null)
{
return;
}
Settings.AptkAmaIdentityProvider = credentials.Provider;
Settings.AptkAmaIdentityUserId = credentials.User.UserId;
Settings.AptkAmaIdentityAuthToken = credentials.User.MobileServiceAuthenticationToken;
}
public bool TryLoadCredentials(out IAptkAmaCredentials credentials)
{
credentials = !string.IsNullOrEmpty(Settings.AptkAmaIdentityUserId) &&
!string.IsNullOrEmpty(Settings.AptkAmaIdentityAuthToken) &&
Settings.AptkAmaIdentityProvider != AptkAmaAuthenticationProvider.None
? new AptkAmaCredentials(Settings.AptkAmaIdentityProvider, new MobileServiceUser(Settings.AptkAmaIdentityUserId)
{
MobileServiceAuthenticationToken = Settings.AptkAmaIdentityAuthToken
})
: null;
return(credentials != null);
}
protected override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
var response = await base.SendAsync(request, cancellationToken);
if (response.StatusCode == HttpStatusCode.Unauthorized && !_isResfreshingUser)
{
// Resolve IMvxAmsService if not yet defined
if (AptkAmaService == null)
{
throw new InvalidOperationException("Make sure to configure AptkAma plugin properly before using it.");
}
// Cloning the request
var clonedRequest = await CloneRequest(request);
// Load saved user if possible
if (_configuration.CacheService != null &&
_configuration.CacheService.TryLoadCredentials(out _credentials) &&
(AptkAmaService.Identity.CurrentUser == null ||
(AptkAmaService.Identity.CurrentUser.UserId != _credentials.User.UserId &&
AptkAmaService.Identity.CurrentUser.MobileServiceAuthenticationToken != _credentials.User.MobileServiceAuthenticationToken)))
{
AptkAmaService.Identity.CurrentUser = _credentials.User;
clonedRequest.Headers.Remove("X-ZUMO-AUTH");
// Set the authentication header
clonedRequest.Headers.Add("X-ZUMO-AUTH", _credentials.User.MobileServiceAuthenticationToken);
// Resend the request
response = await base.SendAsync(clonedRequest, cancellationToken);
// Refresh the token
if (response.StatusCode == HttpStatusCode.Unauthorized)
{
_isResfreshingUser = true;
await AptkAmaService.Identity.RefreshUserAsync();
_isResfreshingUser = false;
clonedRequest.Headers.Remove("X-ZUMO-AUTH");
// Set the authentication header
clonedRequest.Headers.Add("X-ZUMO-AUTH", _credentials.User.MobileServiceAuthenticationToken);
// Resend the request
response = await base.SendAsync(clonedRequest, cancellationToken);
}
}
if (response.StatusCode == HttpStatusCode.Unauthorized &&
_credentials != null &&
_credentials.Provider != AptkAmaAuthenticationProvider.None &&
_credentials.Provider != AptkAmaAuthenticationProvider.Custom)
{
try
{
// Login user again
var user = await AptkAmaService.Identity.LoginAsync(_credentials.Provider);
// Save the user if possible
if (_credentials == null)
{
_credentials = new AptkAmaCredentials(_credentials.Provider, user);
}
_configuration.CacheService?.SaveCredentials(_credentials);
clonedRequest.Headers.Remove("X-ZUMO-AUTH");
// Set the authentication header
clonedRequest.Headers.Add("X-ZUMO-AUTH", user.MobileServiceAuthenticationToken);
// Resend the request
response = await base.SendAsync(clonedRequest, cancellationToken);
}
catch (InvalidOperationException)
{
// user cancelled auth, so lets return the original response
return(response);
}
}
if (response.StatusCode == HttpStatusCode.Unauthorized)
{
_onLoggedOut?.Invoke();
}
}
return(response);
}
