/// <summary>
/// Exchange the authorization code for an access token
/// </summary>
/// <param name="accessTokenRequest">Request parameters to obtain access token</param>
/// <returns>Access token</returns>
public string ObtainAccessToken(ObtainAccessTokenRequest accessTokenRequest)
{
//create post data
var postData = Encoding.Default.GetBytes(JsonConvert.SerializeObject(accessTokenRequest));
//create web request
var serviceUrl = $"{GetOAuthServiceUrl()}/token";
var request = (HttpWebRequest)WebRequest.Create(serviceUrl);
request.Method = WebRequestMethods.Http.Post;
request.Accept = "application/json";
request.ContentType = "application/json";
request.ContentLength = postData.Length;
request.UserAgent = SquarePaymentDefaults.UserAgent;
//post request
using (var stream = request.GetRequestStream())
{
stream.Write(postData, 0, postData.Length);
}
//get response
var httpResponse = (HttpWebResponse)request.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
//return received access token
var response = JsonConvert.DeserializeObject <ObtainAccessTokenResponse>(streamReader.ReadToEnd());
return(response?.AccessToken);
}
}
/// <summary>
/// Exchange the authorization code for an access token
/// </summary>
/// <param name="authorizationCode">Authorization code</param>
/// <returns>The asynchronous task whose result contains access and refresh tokens</returns>
public async Task <(string AccessToken, string RefreshToken)> ObtainAccessTokenAsync(string authorizationCode)
{
try
{
//get response
var request = new ObtainAccessTokenRequest
{
ApplicationId = _squarePaymentSettings.ApplicationId,
ApplicationSecret = _squarePaymentSettings.ApplicationSecret,
GrantType = GrantType.New,
AuthorizationCode = authorizationCode
};
var requestContent = new StringContent(JsonConvert.SerializeObject(request), Encoding.UTF8, MimeTypes.ApplicationJson);
var response = await _httpClient.PostAsync("token", requestContent);
//return received access token
var responseContent = await response.Content.ReadAsStringAsync();
var accessTokenResponse = JsonConvert.DeserializeObject <ObtainAccessTokenResponse>(responseContent);
return(accessTokenResponse?.AccessToken, accessTokenResponse?.RefreshToken);
}
catch (AggregateException exception)
{
//rethrow actual exception
throw exception.InnerException;
}
}
/// <summary>
/// Renew the expired access token
/// </summary>
/// <param name="storeId">Store identifier for which access token should be updated</param>
/// <returns>The asynchronous task whose result contains access and refresh tokens</returns>
public async Task <(string AccessToken, string RefreshToken)> RenewAccessTokenAsync(int storeId)
{
try
{
var settings = _settingService.LoadSetting <SquarePaymentSettings>(storeId);
//get response
var request = new ObtainAccessTokenRequest
{
ApplicationId = settings.ApplicationId,
ApplicationSecret = settings.ApplicationSecret,
GrantType = GrantType.Refresh,
RefreshToken = settings.RefreshToken
};
var httpRequest = new HttpRequestMessage(HttpMethod.Post, "token");
httpRequest.Headers.Add(HeaderNames.Authorization, $"Client {settings.ApplicationSecret}");
httpRequest.Content = new StringContent(JsonConvert.SerializeObject(request), Encoding.UTF8, MimeTypes.ApplicationJson);
var response = await _httpClient.SendAsync(httpRequest);
//return received access token
var responseContent = await response.Content.ReadAsStringAsync();
var accessTokenResponse = JsonConvert.DeserializeObject <ObtainAccessTokenResponse>(responseContent);
return(accessTokenResponse?.AccessToken, accessTokenResponse?.RefreshToken);
}
catch (AggregateException exception)
{
//rethrow actual exception
throw exception.InnerException;
}
}
