Using OAuth (like FB) is .Net MAUI

Vincent Bernier · 2022-09-08T01:58:55.629Z

Hello there! 👋 I'm looking for some examples of Supabase in a MAUI (or Xamarin) app to make my auth working. I tried to use the csharp community library, but the section on the 3rd Party Authentication is very vague... Everything is working fine with the email/password signin. - Does anyone have done this? - Does anyone have tried to use an "WebAuthenticator" in C# with Supabase? - What "supabase.auth.signIn({ provider: 'facebook', })" is really doing behind the scene? Also, if I'm developping an MAUI app without any backend, what would be the "Redirect_URL" in the Auth Section of Supabase?

V

Vincent BernierOP•9/8/22, 2:30 AM

In fact, it's look like when Facebook make his callback, he does it to Sapabase instead of my app. And so, there is no API KEY in that request.

V

Vincent BernierOP•9/8/22, 2:31 AM

I hit the "401" here

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Vincent BernierOP•9/8/22, 3:05 AM

I fixed my issue!

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Vincent BernierOP•9/8/22, 3:07 AM

I was able to do my login that way:

WebAuthenticatorResult authResult = await WebAuthenticator.AuthenticateAsync(
                    new Uri("https://XXX.supabase.co:443/auth/v1/authorize?provider=facebook"),
                    new Uri("app-name://callback"));

                NameValueCollection queryString = System.Web.HttpUtility.ParseQueryString(string.Empty);

                queryString.Add("access_token", authResult?.AccessToken);
                queryString.Add("expires_in", "10000000"/*authResult?.ExpiresIn.ToString()*/); //Still need to resolbe that issue
                queryString.Add("refresh_token", authResult?.RefreshToken);
                queryString.Add("token_type", "bearer");

                string url = "https://XXX.supabase.co:443/auth/v1/authorize?" + queryString.ToString();

                var session = await Supabase.Client.Instance.Auth.GetSessionFromUrl(new Uri(url));

WebAuthenticatorResult authResult = await WebAuthenticator.AuthenticateAsync(
                    new Uri("https://XXX.supabase.co:443/auth/v1/authorize?provider=facebook"),
                    new Uri("app-name://callback"));

                NameValueCollection queryString = System.Web.HttpUtility.ParseQueryString(string.Empty);

                queryString.Add("access_token", authResult?.AccessToken);
                queryString.Add("expires_in", "10000000"/*authResult?.ExpiresIn.ToString()*/); //Still need to resolbe that issue
                queryString.Add("refresh_token", authResult?.RefreshToken);
                queryString.Add("token_type", "bearer");

                string url = "https://XXX.supabase.co:443/auth/v1/authorize?" + queryString.ToString();

                var session = await Supabase.Client.Instance.Auth.GetSessionFromUrl(new Uri(url));

WebAuthenticatorResult authResult = await WebAuthenticator.AuthenticateAsync(
                    new Uri("https://XXX.supabase.co:443/auth/v1/authorize?provider=facebook"),
                    new Uri("app-name://callback"));

                NameValueCollection queryString = System.Web.HttpUtility.ParseQueryString(string.Empty);

                queryString.Add("access_token", authResult?.AccessToken);
                queryString.Add("expires_in", "10000000"/*authResult?.ExpiresIn.ToString()*/); //Still need to resolbe that issue
                queryString.Add("refresh_token", authResult?.RefreshToken);
                queryString.Add("token_type", "bearer");

                string url = "https://XXX.supabase.co:443/auth/v1/authorize?" + queryString.ToString();

                var session = await Supabase.Client.Instance.Auth.GetSessionFromUrl(new Uri(url));

WebAuthenticatorResult authResult = await WebAuthenticator.AuthenticateAsync(
                    new Uri("https://XXX.supabase.co:443/auth/v1/authorize?provider=facebook"),
                    new Uri("app-name://callback"));

                NameValueCollection queryString = System.Web.HttpUtility.ParseQueryString(string.Empty);

                queryString.Add("access_token", authResult?.AccessToken);
                queryString.Add("expires_in", "10000000"/*authResult?.ExpiresIn.ToString()*/); //Still need to resolbe that issue
                queryString.Add("refresh_token", authResult?.RefreshToken);
                queryString.Add("token_type", "bearer");

                string url = "https://XXX.supabase.co:443/auth/v1/authorize?" + queryString.ToString();

                var session = await Supabase.Client.Instance.Auth.GetSessionFromUrl(new Uri(url));

C

CartmanTheGreat•4/22/24, 11:42 PM

for anyone having issues with the expires in issue, this is what i did

                int expiresInSeconds = (int)(authResult.ExpiresIn.Value - DateTimeOffset.UtcNow).TotalSeconds;

int expiresInSeconds = (int)(authResult.ExpiresIn.Value - DateTimeOffset.UtcNow).TotalSeconds;

                int expiresInSeconds = (int)(authResult.ExpiresIn.Value - DateTimeOffset.UtcNow).TotalSeconds;

int expiresInSeconds = (int)(authResult.ExpiresIn.Value - DateTimeOffset.UtcNow).TotalSeconds;

Using OAuth (like FB) is .Net MAUI

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