/// <summary>
/// Login the user from Azure AD and Get Microsoft Graph access token.
/// </summary>
/// <remarks>Need Sign in and read user profile scopes (User.Read)</remarks>
/// <returns>Returns success or failure of login attempt.</returns>
public async Task <bool> LoginAsync()
{
_isConnected = false;
if (!_isInitialized)
{
throw new InvalidOperationException("Microsoft Graph not initialized.");
}
_authentication = new MicrosoftGraphAuthenticationHelper();
string accessToken = null;
if (_authenticationModel == AuthenticationModel.V1)
{
accessToken = await _authentication.GetUserTokenAsync(_appClientId);
}
else
{
// accessToken = await _authentication.GetUserTokenV2Async(_appClientId);
}
if (string.IsNullOrEmpty(accessToken))
{
return(_isConnected);
}
_isConnected = true;
_user = new MicrosoftGraphUserService(_graphProvider);
if ((_servicesToInitialize & ServicesToInitialize.UserProfile) == ServicesToInitialize.UserProfile)
{
await GetUserAsyncProfile();
}
// if ((_servicesToInitialize & ServicesToInitialize.OneDrive) == ServicesToInitialize.OneDrive)
// {
// _user.InitializeDrive();
// }
if ((_servicesToInitialize & ServicesToInitialize.Message) == ServicesToInitialize.Message)
{
_user.InitializeMessage();
}
if ((_servicesToInitialize & ServicesToInitialize.Event) == ServicesToInitialize.Event)
{
_user.InitializeEvent();
}
return(_isConnected);
}
/// <summary>
/// Create Microsoft Graph client
/// </summary>
/// <param name='appClientId'>Azure AD's App client id</param>
/// <returns>instance of the GraphServiceclient</returns>
private GraphServiceClient CreateGraphClientProvider(string appClientId)
{
return(new GraphServiceClient(
new DelegateAuthenticationProvider(
async(requestMessage) =>
{
// requestMessage.Headers.Add('outlook.timezone', 'Romance Standard Time');
requestMessage.Headers.Authorization =
new AuthenticationHeaderValue(
"bearer",
await _authentication.GetUserTokenAsync(appClientId).ConfigureAwait(false));
return;
})));
}
/// <summary>
/// Login the user from Azure AD and Get Microsoft Graph access token.
/// </summary>
/// <remarks>Need Sign in and read user profile scopes (User.Read)</remarks>
/// <returns>Returns success or failure of login attempt.</returns>
public async Task <bool> LoginAsync()
{
_isConnected = false;
if (!_isInitialized)
{
throw new InvalidOperationException("Microsoft Graph not initialized.");
}
_authentication = new MicrosoftGraphAuthenticationHelper();
var accessToken = await _authentication.GetUserTokenAsync(_appClientId);
if (string.IsNullOrEmpty(accessToken))
{
return(_isConnected);
}
_isConnected = true;
await InitializeUserAsync();
return(_isConnected);
}