public IObservable <string> GetGoogleToken()
{
ensureApiClientExists();
return(logOutIfNeeded().SelectMany(getGoogleToken));
IObservable <Unit> logOutIfNeeded()
{
if (!googleApiClient.IsConnected)
{
return(Observable.Return(Unit.Default));
}
var logoutSubject = new Subject <Unit>();
var logoutCallback = new LogOutCallback(() => logoutSubject.CompleteWith(Unit.Default));
Auth.GoogleSignInApi
.SignOut(googleApiClient)
.SetResultCallback(logoutCallback);
return(logoutSubject.AsObservable());
}
IObservable <string> getGoogleToken(Unit _)
{
lock (lockable)
{
if (isLoggingIn)
{
return(loginSubject.AsObservable());
}
isLoggingIn = true;
loginSubject = new Subject <string>();
if (googleApiClient.IsConnected)
{
login();
return(loginSubject.AsObservable());
}
googleApiClient.Connect();
return(loginSubject.AsObservable());
}
}
}
public IObservable <Unit> LogOutIfNeeded()
{
logoutSubject = new Subject <Unit>();
if (googleApiClient.IsConnected)
{
var logoutCallback = new LogOutCallback(() =>
{
logoutSubject.OnNext(Unit.Default);
logoutSubject.OnCompleted();
});
Auth.GoogleSignInApi.SignOut(googleApiClient).SetResultCallback(logoutCallback);
return(logoutSubject.AsObservable());
}
else
{
return(Observable.Return(Unit.Default));
}
}
