/// <inheritdoc/>
public async Task <bool> LoginAsync()
{
_isConnected = false;
if (!_isInitialized)
{
throw new InvalidOperationException("Microsoft OneDrive not initialized.");
}
if (_accountProviderType == AccountProviderType.Msal)
{
_accountProvider = GraphOneDriveAuthenticationHelper.CreateMsalAuthenticationProvider(_appClientId, _scopes);
await GraphOneDriveAuthenticationHelper.AuthenticateMsalUserAsync(_scopes);
}
else
{
GraphOneDriveAuthenticationHelper.ResourceUri = "https://graph.microsoft.com/";
_accountProvider = GraphOneDriveAuthenticationHelper.CreateAdalAuthenticationProvider(_appClientId);
await GraphOneDriveAuthenticationHelper.AuthenticateAdalUserAsync();
}
_oneDriveProvider = new GraphServiceClient("https://graph.microsoft.com/v1.0/me", _accountProvider);
_isConnected = true;
return(_isConnected);
}
/// <summary>
/// Create an ADAL Authentication provider
/// </summary>
/// <param name="appClientId">client application id</param>
/// <returns>an authentication provider for Azure Active Directory</returns>
internal static IAuthenticationProvider CreateAdalAuthenticationProvider(string appClientId)
{
_appClientId = appClientId;
_accountProvider = new DelegateAuthenticationProvider(
async(requestMessage) =>
{
requestMessage.Headers.Authorization =
new AuthenticationHeaderValue(
"bearer",
await GraphOneDriveAuthenticationHelper.AuthenticateAdalUserAsync().ConfigureAwait(false));
return;
});
return(_accountProvider);
}