/// <summary>
/// This method will create a new authorization for the specified OAuth application, only if an authorization
/// for that application doesn’t already exist for the user. It returns the user’s token for the application
/// if one exists. Otherwise, it creates a new one.
/// </summary>
/// <remarks>
/// <para>
/// This method allows the caller to provide a callback which is used to retrieve the two-factor code from
/// the user. Typically the callback is used to show some user interface to the user.
/// </para>
/// <para>
/// See <a href="http://developer.github.com/v3/oauth/#list-your-authorizations">API documentation</a>
/// for more details.
/// </para>
/// </remarks>
/// <param name="authorizationsClient">The <see cref="IAuthorizationsClient" /> this method extends</param>
/// <param name="clientId">Client ID for the OAuth application that is requesting the token</param>
/// <param name="clientSecret">The client secret</param>
/// <param name="newAuthorization">Defines the scopes and metadata for the token</param>
/// <param name="twoFactorChallengeHandler">Callback used to retrieve the two-factor authentication code
/// from the user</param>
/// <returns></returns>
public static IObservable <ApplicationAuthorization> GetOrCreateApplicationAuthentication(
this IObservableAuthorizationsClient authorizationsClient,
string clientId,
string clientSecret,
NewAuthorization newAuthorization,
Func <TwoFactorRequiredException, IObservable <TwoFactorChallengeResult> > twoFactorChallengeHandler)
{
Ensure.ArgumentNotNull(authorizationsClient, "authorizationsClient");
Ensure.ArgumentNotNullOrEmptyString(clientId, "clientId");
Ensure.ArgumentNotNullOrEmptyString(clientSecret, "clientSecret");
Ensure.ArgumentNotNull(newAuthorization, "newAuthorization");
return(authorizationsClient.GetOrCreateApplicationAuthentication(clientId, clientSecret, newAuthorization)
.Catch <ApplicationAuthorization, TwoFactorRequiredException>(exception => twoFactorChallengeHandler(exception)
.SelectMany(result =>
result.ResendCodeRequested
? authorizationsClient.GetOrCreateApplicationAuthentication(
clientId,
clientSecret,
newAuthorization,
twoFactorChallengeHandler)
: authorizationsClient.GetOrCreateApplicationAuthentication(clientId,
clientSecret,
newAuthorization,
result.AuthenticationCode))));
}
static IObservable <ApplicationAuthorization> GetOrCreateAuthorizationUnified(
this IObservableAuthorizationsClient authorizationsClient,
string clientId,
string clientSecret,
NewAuthorization newAuthorization,
string twoFactorAuthenticationCode = null)
{
return(string.IsNullOrEmpty(twoFactorAuthenticationCode)
? authorizationsClient.GetOrCreateApplicationAuthentication(clientId, clientSecret, newAuthorization)
: authorizationsClient.GetOrCreateApplicationAuthentication(clientId, clientSecret, newAuthorization, twoFactorAuthenticationCode));
}