/// <summary>
/// Send a POST request to the specified Uri as an asynchronous operation.
/// </summary>
/// <param name="api">The api url for the request is sent to.</param>
/// <param name="parameters">The parameters of the api.</param>
/// <returns>The task object representing the asynchronous operation.</returns>
public Task <HttpResponseMessage> PostAsync(string api, IDictionary <string, object> parameters)
{
if (parameters is null)
{
parameters = new Dictionary <string, object>();
}
if (parameters.All(p => p.Value is string))
{
return(_http.PostAsync(api, new FormUrlEncodedContent(parameters.ToKeyValuePairs())));
}
var content = new MultipartFormDataContent();
foreach (var(key, value) in parameters)
{
switch (value)
{
case byte[] bytes: // bytes
content.Add(new ByteArrayContent(bytes), key, OAuthUtility.GenerateNonceString());
break;
case MemoryFileContent memoryContent: // memory content
content.Add(new ByteArrayContent(memoryContent.Content), key, memoryContent.FileName);
break;
case FileInfo file: // file
content.Add(new ByteArrayContent(File.ReadAllBytes(file.FullName)), key, file.Name);
break;
default:
content.Add(new StringContent($"{value}"), key);
break;
}
}
return(_http.PostAsync(api, content));
}