/// <summary>
/// Returns the refresh code given the <paramref name="credentials"/> and the <paramref name="accessCode"/>.
/// </summary>
/// <param name="credentials">The oauth credentials.</param>
/// <param name="accessCode">The access code returned from the login flow.</param>
public static async Task<string> EndOAuthFlow(OAuthCredentials credentials, string redirectUrl, string accessCode)
{
var client = new WebClient();
var form = new NameValueCollection
{
{ CodeValue, accessCode },
{ ClientIdKey, credentials.ClientId },
{ ClientSecretKey, credentials.ClientSecret },
{ RedirectUriKey, redirectUrl },
{ GrantTypeKey, AuthorizationCodeValue },
};
try
{
var response = await client.UploadValuesTaskAsync(OAuthApiUrl, form);
var decoded = Encoding.UTF8.GetString(response);
var model = JsonConvert.DeserializeObject<IDictionary<string, string>>(decoded);
return model[RefreshTokenKey];
}
catch (WebException ex)
{
Debug.WriteLine($"Failed to finalize oauth flow: {ex.Message}");
throw new OAuthException(ex.Message, ex);
}
catch (JsonException ex)
{
Debug.WriteLine($"Failed to parse result: {ex.Message}");
throw new OAuthException(ex.Message, ex);
}
}
/// <summary>
/// Returns the URL to use to start the OAUTH login flow.
/// </summary>
/// <param name="credentials"></param>
/// <param name="scopes"></param>
public static string GetInitialOAuthUrl(OAuthCredentials credentials, string redirectUrl, IEnumerable<string> scopes)
{
var form = new Dictionary<string, string>
{
{ ResponseTypeKey, CodeValue },
{ ClientIdKey, credentials.ClientId },
{ RedirectUriKey, redirectUrl },
{ ScopeKey, String.Join(ScopesSeparator, scopes) },
};
return $"https://accounts.google.com/o/oauth2/auth?{ToQueryString(form)}";
}
private OAuthLoginFlowWindow(OAuthCredentials credentials, IEnumerable<string> scopes)
: base(GoogleCloudExtension.Resources.OAuthFlowWindowTitle)
{
_flow = new OAuthLoginFlow(
credentials,
scopes,
successUrl: SucessUrl,
failureUrl: FailureUrl);
ViewModel = new OAuthLoginFlowViewModel(this);
var windowContent = new OauthLoginFlowWindowContent
{
DataContext = ViewModel,
};
Content = windowContent;
StartLoginFlow();
}
public static string PromptUser(OAuthCredentials credentials, IEnumerable<string> scopes)
{
var dialog = new OAuthLoginFlowWindow(credentials, scopes);
dialog.ShowModal();
return dialog.ViewModel.RefreshCode;
}