// This method handles the refreshing of the true layer api access token
private static async Task HandleOnRefreshTokenAsync(TrueLayerTokenRefreshContext context)
{
var refreshToken = context.Properties.GetTokenValue("refresh_token");
var httpContext = context.HttpContext;
var options = context.Options;
var properties = context.Properties;
var pairs = new Dictionary <string, string>
{
{ "client_id", options.ClientId },
{ "client_secret", options.ClientSecret },
{ "grant_type", "refresh_token" },
{ "refresh_token", refreshToken }
};
var content = new FormUrlEncodedContent(pairs);
var refreshResponse =
await options.Backchannel.PostAsync(options.TokenEndpoint, content, httpContext.RequestAborted).ConfigureAwait(false);
refreshResponse.EnsureSuccessStatusCode();
var payload = JObject.Parse(await refreshResponse.Content.ReadAsStringAsync().ConfigureAwait(false));
// Persist the new acess token
properties.UpdateTokenValue("access_token", payload.Value <string>("access_token"));
refreshToken = payload.Value <string>("refresh_token");
if (!string.IsNullOrEmpty(refreshToken))
{
properties.UpdateTokenValue("refresh_token", refreshToken);
}
if (int.TryParse(payload.Value <string>("expires_in"), NumberStyles.Integer, CultureInfo.InvariantCulture,
out var seconds))
{
var expiresAt = DateTimeOffset.UtcNow + TimeSpan.FromSeconds(seconds);
properties.UpdateTokenValue("expires_at", expiresAt.ToString("o", CultureInfo.InvariantCulture));
}
await httpContext.SignInAsync(context.Principal, properties).ConfigureAwait(false);
}
public Task RefreshToken(TrueLayerTokenRefreshContext context) => OnRefreshToken(context);
