public Task <(string IdToken, string AccessToken)> LoginWithGoogle()
{
var tcs = new TaskCompletionSource <(string idToken, string accessToken)>();
string clientId = null;
string redirectUri = null;
switch (Device.RuntimePlatform)
{
case Device.iOS:
clientId = Constants.GoogleIosClientId;
redirectUri = Constants.GoogleIosRedirectUrl;
break;
case Device.Android:
clientId = Constants.GoogleAndroidClientId;
redirectUri = Constants.GoogleAndroidRedirectUrl;
break;
}
var authenticator = new CustomOAuth2Authenticator(clientId,
null,
"https://www.googleapis.com/auth/userinfo.email",
new Uri("https://accounts.google.com/o/oauth2/auth"),
new Uri(redirectUri),
new Uri("https://www.googleapis.com/oauth2/v4/token"),
null,
true);
authenticator.Completed += (sender, e) =>
{
if (e.IsAuthenticated && e.Account != null && e.Account.Properties != null)
{
var properties = e.Account.Properties;
tcs.TrySetResult((properties["id_token"], properties["access_token"]));
}
else
{
tcs.TrySetResult((null, null));
}
};
authenticator.Error += (sender, e) =>
{
tcs.TrySetException(e.Exception ?? new Exception(e.Message));
};
AuthenticationState.Authenticator = authenticator;
var presenter = new Xamarin.Auth.Presenters.OAuthLoginPresenter();
presenter.Login(authenticator);
return(tcs.Task);
}
public Task <string> LoginWithGitHub()
{
var tcs = new TaskCompletionSource <string>();
var authenticator = new CustomOAuth2Authenticator(Constants.GitHubClientId,
Constants.GitHubClientSecret,
"user",
new Uri("https://github.com/login/oauth/authorize"),
new Uri(Constants.GitHubRedirectUrl),
new Uri("https://github.com/login/oauth/access_token"),
null,
true);
authenticator.Completed += (sender, e) =>
{
if (e.IsAuthenticated && e.Account != null && e.Account.Properties != null)
{
var properties = e.Account.Properties;
tcs.TrySetResult((properties["access_token"]));
}
else
{
tcs.TrySetResult(null);
}
};
authenticator.Error += (sender, e) =>
{
tcs.TrySetException(e.Exception ?? new Exception(e.Message));
};
AuthenticationState.Authenticator = authenticator;
var presenter = new Xamarin.Auth.Presenters.OAuthLoginPresenter();
presenter.Login(authenticator);
return(tcs.Task);
}