ExternalLoging with Google

[Peymanpn]

hi;
thank you for your great post and sample code.
but I am a bit frustrated replicating this for Google.
how can I check and verify the token that we got from our angular app?

in this part

// 1.generate an app access token
      var appAccessTokenResponse = await Client.GetStringAsync($"https://graph.facebook.com/oauth/access_token?client_id={_fbAuthSettings.AppId}&client_secret={_fbAuthSettings.AppSecret}&grant_type=client_credentials");
      var appAccessToken = JsonConvert.DeserializeObject<FacebookAppAccessToken>(appAccessTokenResponse);
      // 2. validate the user access token
      var userAccessTokenValidationResponse = await Client.GetStringAsync($"https://graph.facebook.com/debug_token?input_token={model.AccessToken}&access_token={appAccessToken.AccessToken}");
      var userAccessTokenValidation = JsonConvert.DeserializeObject<FacebookUserAccessTokenValidation>(userAccessTokenValidationResponse);

      if (!userAccessTokenValidation.Data.IsValid)
      {
        return BadRequest(Errors.AddErrorToModelState("login_failure", "Invalid facebook token.", ModelState));
      }

      // 3. we've got a valid token so we can request user data from fb
      var userInfoResponse = await Client.GetStringAsync($"https://graph.facebook.com/v2.8/me?fields=id,email,first_name,last_name,name,gender,locale,birthday,picture&access_token={model.AccessToken}");
      var userInfo = JsonConvert.DeserializeObject<FacebookUserData>(userInfoResponse);

      // 4. ready to create the local user account (if necessary) and jwt

how can I implement these 4 steps for google?
I used every method described in google OAuth document but there was no luck.
I'll be grateful if you help me with this.

[toralux]

Have a look here as reference for Google Authentication:
https://github.com/googleapis/google-api-dotnet-client/tree/master/Src/Support/Google.Apis.Auth