/// <summary>
/// Validates if the session has authenticated already and if so, ensures the AccessToken coming forward from the authentication is still valid and assigns it to the HttpClient in this session
/// </summary>
private async Task EnsureAccessToken()
{
// Check if we have an authenticated session
if (AuthenticatedSession == null || !AuthenticatedSession.Expires.HasValue)
{
// Session is not yet authenticated, nothing we can do at this point
return;
}
// We have an authenticated session, check if its still valid
if (AuthenticatedSession.Expires.Value < DateTime.Now)
{
// Access token is no longer valid, request a new one
if (!string.IsNullOrEmpty(AuthenticatedSession.RefreshToken))
{
// We have a refresh token, use that to get a new access token
AuthenticatedSession = await GetRefreshedSession();
}
else
{
// We don't have a refresh token, just get a new access token
AuthenticatedSession = await GetNewSession();
}
}
// Set the access token on the HttpClient
_httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", AuthenticatedSession.AccessToken);
}
/// <summary>
/// Authenticates this session with the Tado API
/// </summary>
public async Task Authenticate()
{
try
{
// Request the OAuth token
AuthenticatedSession = await GetNewSession();
}
catch (Exception ex)
{
throw new Exceptions.SessionAuthenticationFailedException(ex);
}
}