private static HttpContent GenerateFormPostData(ActionApiDescriptionModel action, IReadOnlyDictionary <string, object> methodArguments)
{
var parameters = action
.Parameters
.Where(p => p.BindingSourceId == ParameterBindingSources.Form || p.BindingSourceId == ParameterBindingSources.FormFile)
.ToArray();
if (!parameters.Any())
{
return(null);
}
if (parameters.Any(x => x.BindingSourceId == ParameterBindingSources.FormFile))
{
var formData = new MultipartFormDataContent();
foreach (var parameter in parameters)
{
var value = HttpActionParameterHelper.FindParameterValue(methodArguments, parameter);
if (value == null)
{
continue;
}
if (value is IRemoteStreamContent remoteStreamContent)
{
var stream = remoteStreamContent.GetStream();
if (stream.CanSeek)
{
stream.Position = 0;
}
var streamContent = new StreamContent(stream);
if (!remoteStreamContent.ContentType.IsNullOrWhiteSpace())
{
streamContent.Headers.ContentType = new MediaTypeHeaderValue(remoteStreamContent.ContentType);
}
formData.Add(streamContent, parameter.Name, remoteStreamContent.FileName ?? parameter.Name);
}
else if (value is IEnumerable <IRemoteStreamContent> remoteStreamContents)
{
foreach (var content in remoteStreamContents)
{
var stream = content.GetStream();
if (stream.CanSeek)
{
stream.Position = 0;
}
var streamContent = new StreamContent(stream);
if (!content.ContentType.IsNullOrWhiteSpace())
{
streamContent.Headers.ContentType = new MediaTypeHeaderValue(content.ContentType);
}
formData.Add(streamContent, parameter.Name, content.FileName ?? parameter.Name);
}
}
else
{
formData.Add(new StringContent(value.ToString(), Encoding.UTF8), parameter.Name);
}
}
return(formData);
}
else
{
var postDataBuilder = new StringBuilder();
var isFirstParam = true;
foreach (var parameter in parameters.Where(p => p.BindingSourceId == ParameterBindingSources.Form))
{
var value = HttpActionParameterHelper.FindParameterValue(methodArguments, parameter);
if (value == null)
{
continue;
}
postDataBuilder.Append(isFirstParam ? "?" : "&");
postDataBuilder.Append(parameter.Name + "=" + System.Net.WebUtility.UrlEncode(value.ToString()));
isFirstParam = false;
}
return(new StringContent(postDataBuilder.ToString(), Encoding.UTF8, MimeTypes.Application.XWwwFormUrlencoded));
}
}