/// <summary>Call the CloudPOS API.</summary>
/// <param name="uri">The uri to call.</param>
/// <param name="action">The action to perform.</param>
/// <param name="jsonToSend">The JSON to send.</param>
/// <returns>The CallResults.</returns>
public static CallResults CallAPI(string uri, enumRESTVerb action, string jsonToSend = "")
{
CallResults results = new CallResults();
string appendOrQueryString = uri.Contains("?") ? "&": "?";
string pagedUrl = string.Format("{0}{1}PageNumber=", uri, appendOrQueryString);
string nextUrl = uri;
do
{
using (HttpClient client = new HttpClient())
{
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(Constants.API_KEY);
StringContent content = new StringContent(jsonToSend, Encoding.UTF8, "application/json");
HttpResponseMessage response = GetResponseFromAPI(client, nextUrl, action, content);
string data = response.Content.ReadAsStringAsync().Result;
if (response.IsSuccessStatusCode == true)
{
nextUrl = HandlePaging(response, pagedUrl);
results.JsonBuilder.Append(data);
}
else
{
results.ErrorMessage = data;
HandleBadResponse(response, ref nextUrl, ref results);
}
}
}while (nextUrl != string.Empty);
results.JsonBuilder.Replace("][", ",");
return(results);
}
/// <summary>Handles a bad response from the API.</summary>
/// <param name="response">The response.</param>
/// <param name="nextUri">[in,out] The next uri to call.</param>
/// <param name="results">[in,out] The results.</param>
private static void HandleBadResponse(HttpResponseMessage response, ref string nextUri, ref CallResults results)
{
switch (response.StatusCode)
{
case HttpStatusCode.NotFound:
nextUri = string.Empty;
results.Status = enumApiCallStatus.NOT_FOUND;
break;
case (HttpStatusCode)429:
Thread.Sleep(1000);
break;
case HttpStatusCode.Unauthorized:
nextUri = string.Empty;
results.Status = enumApiCallStatus.NOT_AUTHENTICATED;
break;
default:
nextUri = string.Empty;
results.Status = enumApiCallStatus.SERVER_ERROR;
break;
}
}