// Because we need to launch a browser and wait for authentications this needs to be a task so it can wait.
async Task BeginoAuth2Authentication()
{
if (string.IsNullOrEmpty(XeroConfig.ClientID))
{
throw new ArgumentNullException("Missing Client ID");
}
// Raise event to the parent caller (your app)
onStatusUpdates("Begin Authentication", XeroEventStatus.Success);
XeroConfig.ReturnedAccessCode = null; // Ensure the Return code cleared as we are authenticating and this propery will be monitored for the completion
XeroConfig.AccessTokenSet = new XeroTokenSet(); // Reset this token as we are authenticating so its all going to be replaced
//start webserver to listen for the callback
responseListener = new LocalHttpListener();
responseListener.Message += MessageResponse;
responseListener.callBackUri = XeroConfig.CallbackUri;
responseListener.config = XeroConfig;
responseListener.StartWebServer();
//open web browser with the link generated
System.Diagnostics.Process.Start(XeroConfig.AuthURL);
// Fire Event so the caller can monitor
onStatusUpdates("Login URL Opened", XeroEventStatus.Log);
// Basically wait for 60 Seconds (should be long enough, possibly not for first time if using 2FA)
HasTimedout = false;
int counter = 0;
do
{
await Task.Delay(1000); // Wait 1 second - gives time for response back to listener
counter++;
} while (responseListener.config.ReturnedAccessCode == null && counter < Timeout); // Keep waiting until a code is returned or a timeout happens
if (counter >= Timeout)
{
// Raise event to the parent caller (your app)
onStatusUpdates("Timed Out Waiting for Authentication", XeroEventStatus.Timeout);
HasTimedout = true;
}
else
{
// Test if access was not granted
// ReturnedAccessCode will be either a valid code or "ACCESS DENIED"
if (responseListener.config.ReturnedAccessCode != XeroConstants.XERO_AUTH_ACCESS_DENIED)
{
// Raise event to the parent caller (your app)
onStatusUpdates("Success", XeroEventStatus.Success);
// XeroConfig = responseListener.config;// update the config with the retrieved access code data
ExchangeCodeForToken();
// Raise event to the parent caller (your app)
onStatusUpdates("Authentication Completed", XeroEventStatus.Success);
}
}
responseListener.StopWebServer();
// Raise event to the parent caller (your app)
onStatusUpdates("Authentication Failed", XeroEventStatus.Failed);
}
public oAuth2()
{
// Setup the Listener client
responseListener = new LocalHttpListener();
if (!Timeout.HasValue)
{
Timeout = 60;
}
HasTimedout = false;
}