public async Task <TokenResponse> StartAuthorizeAsync(Dictionary <string, string> parameters = null, int port = 80)
{
if (TryReadTokenFromFile(_tokenSavePath, out var token))
{
return(token);
}
var requestParameters = _credentials.Dictionary();
requestParameters.Add("response_type", "code");
requestParameters.AddRange(parameters);
var uri = _discoveryDocument.AuthorizeEndpoint.AppendQueryParameters(requestParameters);
BrowserHelper.OpenUrl(uri);
var listener = new HttpCallbackListener(port);
string code = null;
await listener.ListenAsync(message =>
{
var query = message.RequestUri.ToString().Split("?")[1];
if (query.Length == 0)
{
throw new ArgumentOutOfRangeException(nameof(query), "The request uri does not contain a query.");
}
code = HttpUtility.ParseQueryString(query)["code"];
listener.Stop();
});
return(await RequestTokenWithCodeAsync(code) ?? throw new ArgumentNullException(nameof(code)));
}