public async Task <string> GetTokenAsync(string requestGuidString, string authCode)
{
if (_token == null || !_token.IsExpired)
{
throw new InvalidOperationException("A valid token has already been retrieved.");
}
if (!VerifyAuthRequest(requestGuidString))
{
throw new ArgumentException("Invalid request guid.");
}
_guid = requestGuidString;
HttpRequestMessage message = new HttpRequestMessage(HttpMethod.Post, TOKEN_URI);
Dictionary <string, string> values = new Dictionary <string, string>
{
{ "grant_type", "authorization_code" },
{ "code", authCode },
{ "client_id", OAUTH_CLIENT_ID },
{ "redirect_uri", REDIRECT_URI },
};
FormUrlEncodedContent content = new FormUrlEncodedContent(values);
message.Content = content;
HttpResponseMessage response = await _client.SendAsync(message);
string responseString = await response.Content.ReadAsStringAsync();
if (responseString == null)
{
throw new InvalidResponseException("Empty response returned by token request.");
}
TokenResponse tokenResponse = JsonConvert.DeserializeObject <TokenResponse>(responseString);
if (tokenResponse == null || tokenResponse.TokenType != TOKEN_TYPE)
{
throw new InvalidResponseException("Invalid response returned by token request.");
}
_token = new ExpirationWrapper <string>(tokenResponse.AccessToken, tokenResponse.ExpiresIn * 1000);
_token.Expired += TokenExpiredHandler;
_membershipId = tokenResponse.MembershipId;
_clientMgr.AddApiClient(this);
return(requestGuidString);
}
