NOTE: Using the Sign-in button is NOT an option
A year ago I was having a problem creating a moment. Back then I was using version 1.2 of the Google+ API .Net client. As I described in this post, I had it working although the code failed to insert a moment from time to time. I was hoping that the process is more stable and easier to implement now, and it seems like it as can be seen in the example that you can download here - the current version as of this writing is v1.8. So I created a simple project following the SimpleOAuth2 sample in the download, but implementing Google+. This is the code I came up:
public partial class _Default : System.Web.UI.Page
{
private PlusService service;
// Application logic should manage users authentication.
// This sample works with only one user. You can change
// it by retrieving data from the session.
private const string UserId = "user-id";
protected void Page_Load(object sender, EventArgs e)
{
GoogleAuthorizationCodeFlow flow;
var assembly = Assembly.GetExecutingAssembly();
using (var stream = assembly.GetManifestResourceStream(
"GPlusSample.client_secrets.json"))
{
flow = new GoogleAuthorizationCodeFlow(
new GoogleAuthorizationCodeFlow.Initializer
{
DataStore = new FileDataStore("GPlusSample.Store"),
ClientSecretsStream = stream,
//
// Tried only this scope but it did not work
//Scopes = new[] { PlusService.Scope.PlusMe }
//
// I tried the following: but did not work either
//Scopes = new[] { PlusService.Scope.PlusMe,
// "https://www.googleapis.com/auth/plus.moments.write" }
//
// I tried this as well and it failed
//Scopes = new[] { PlusService.Scope.PlusLogin }
//
// Maybe this... but still no joy
Scopes = new[] { PlusService.Scope.PlusLogin,
PlusService.Scope.PlusMe }
});
}
var uri = Request.Url.ToString();
var code = Request["code"];
if (code != null)
{
var token = flow.ExchangeCodeForTokenAsync(UserId, code,
uri.Substring(0, uri.IndexOf("?")), CancellationToken.None).Result;
// Extract the right state.
var oauthState = AuthWebUtility.ExtracRedirectFromState(
flow.DataStore, UserId, Request["state"]).Result;
Response.Redirect(oauthState);
}
else
{
var result = new AuthorizationCodeWebApp(flow, uri, uri)
.AuthorizeAsync(UserId, CancellationToken.None).Result;
if (result.RedirectUri != null)
{
// Redirect the user to the authorization server.
Response.Redirect(result.RedirectUri);
}
else
{
// The data store contains the user credential,
// so the user has been already authenticated.
service = new PlusService(new BaseClientService.Initializer
{
ApplicationName = "Plus API Sample",
HttpClientInitializer = result.Credential
});
}
}
}
/// <summary>Gets the TasksLists of the user.</summary>
public async System.Threading.Tasks.Task InsertMoment()
{
try
{
var me = service.People.Get("me").Execute();
var request = service.Moments.Insert(new Moment()
{
Target = new ItemScope {
Id=Guid.NewGuid().ToString(),
Image="http://www.google.com/s2/static/images/GoogleyEyes.png",
Type="",
Name = "test message",
Description="test",
Text="test message",
},
Type = "http://schemas.google.com/AddActivity",
}, me.Id, MomentsResource.InsertRequest.CollectionEnum.Vault);
var response =await request.ExecuteAsync();
output.Text = "<h1>" + response.Id + "</h1>";
}
catch (Exception ex)
{
var str = ex.ToString();
str = str.Replace(Environment.NewLine, Environment.NewLine + "<br/>");
str = str.Replace(" ", " ");
output.Text = string.Format("<font color=\"red\">{0}</font>", str);
}
}
protected async void createMomentButton_Click(object sender, EventArgs e)
{
await InsertMoment();
}
}
That code always give me a 401 Unauthorized error, even if I have the Google+ API turned on for my project. Here's the actual error I got:
The service plus has thrown an exception: Google.GoogleApiException: Google.Apis.Requests.RequestError Unauthorized [401] Errors [ Message[Unauthorized] Location[ - ] Reason[unauthorized] Domain[global] ]
It's interesting to see that the insert moment is failing even though the call to People.Get("me") works - get("me") works with all of the scope combinations I listed above. It's important to note that each time I try a new scope, I first log out of my Google account and delete the access token that is stored in GPlusSample.Store.
EDIT
I tried setting just the Url instead of individual items as suggested by Ian and I got the exact same error.
var request = service.Moments.Insert(new Moment()
{
Target = new ItemScope {
Url = "https://developers.google.com/+/web/snippet/examples/thing"
},
Type = "http://schemas.google.com/AddActivity",
}, me.Id, MomentsResource.InsertRequest.CollectionEnum.Vault);
var response =await request.ExecuteAsync();
