/// <summary>
/// Gets an access token asynchronously.
/// </summary>
/// <returns></returns>
private async Task <string> GetAccessTokenAsync()
{
IConfidentialClientApplication app = MSALAppBuilder.BuildConfidentialClientApplication();
AuthenticationResult result;
IEnumerable <IAccount> accounts = await app.GetAccountsAsync();
string[] scopes = VeracityIntegrationOptions.VeracityPlatformServiceScopes.Split(' ');
var accountList = accounts.ToList();
var account = accountList.FirstOrDefault();
try
{
// try to get an already cached token
result = await app.AcquireTokenSilent(scopes, account).ExecuteAsync().ConfigureAwait(false);
}
catch (MsalUiRequiredException ex)
{
// Cannot find any cache user in memory, you should sign out and login again.
Debug.WriteLine($"Cannot find any cache user in memory {ex.Message}");
throw;
}
return(result.AccessToken);
}
/// <summary>
/// Called when an authorization code is received.
/// </summary>
/// <param name="context">The context.</param>
/// <returns></returns>
private async Task OnAuthorizationCodeReceivedAsync(AuthorizationCodeReceivedNotification context)
{
var claimsPrincipal = new ClaimsPrincipal(context.AuthenticationTicket.Identity);
// Upon successful sign in, get the access token & cache it using MSAL
IConfidentialClientApplication clientApp = MSALAppBuilder.BuildConfidentialClientApplication(claimsPrincipal);
AuthenticationResult result = await clientApp
.AcquireTokenByAuthorizationCode(VeracityIntegrationOptions.DefaultScope.Split(' '), context.Code)
.ExecuteAsync();
}