private static async Task <OAuthTokenCredential> TryGetOAuthTokenFromRefreshTokenAsync(TokenClient tokenClient, string authority, string refreshToken)
{
// when a refresh token is present try to use it to acquire a new access token
if (!string.IsNullOrEmpty(refreshToken))
{
var tokenResponse = await tokenClient.RequestRefreshTokenAsync(refreshToken).ConfigureAwait(false);
if (!tokenResponse.IsError)
{
// TODO: discover userinfo endpoint via ".well-known/openid-configuration"
var infoClient = new UserInfoClient(authority + "/connect/userinfo");
var userInfo = await infoClient.GetAsync(tokenResponse.AccessToken).ConfigureAwait(false);
return(OAuthTokenCredential.CreateWithClaims(
userInfo.Claims,
tokenResponse.AccessToken,
DateTime.UtcNow + TimeSpan.FromSeconds(tokenResponse.ExpiresIn),
tokenResponse.RefreshToken));
}
}
return(null);
}
