public async Task <UploadAudioCommandResult> Handle(UploadAudioCommand cmd, CancellationToken cancellationToken)
{
var request = cmd.Request;
if (!MultipartRequestHelper.IsMultipartContentType(request.ContentType))
{
throw new ArgumentException("The media file could not be processed.");
}
string mediaId = string.Empty;
UploadAudioCommandResult cmdResult = new UploadAudioCommandResult();
try
{
var processResult = await ProcessFile(request);
var form = processResult.Form;
var file = processResult.File;
var results = form.GetResults();
string instructorId = results["instructorId"];
string title = results["title"];
string firstName = results["firstName"];
string lastName = results["lastName"];
string duration = results["durationInMinutes"];
mediaId = await AddInstructorAudioMedia(instructorId, firstName, lastName, title, Convert.ToInt32(duration), DateTime.UtcNow, DateTime.UtcNow, file);
cmdResult.MediaId = mediaId;
cmdResult.ProfileId = instructorId;
if (string.IsNullOrEmpty(mediaId))
{
throw new Exception($"Could not add instructor media");
}
}
catch (Exception ex)
{
throw ex;
}
return(cmdResult);
}
private async Task <(byte[] File, KeyValueAccumulator Form)> ProcessFile(HttpRequest request)
{
KeyValueAccumulator formAccumulator = new KeyValueAccumulator();
var streamedFileContent = new byte[0];
var boundary = MultipartRequestHelper.GetBoundary(
MediaTypeHeaderValue.Parse(request.ContentType),
_defaultFormOptions.MultipartBoundaryLengthLimit
);
var reader = new MultipartReader(boundary, request.Body);
var section = await reader.ReadNextSectionAsync();
while (section != null)
{
var hasContentDispositionHeader = ContentDispositionHeaderValue.TryParse(
section.ContentDisposition, out var contentDisposition);
if (hasContentDispositionHeader)
{
if (MultipartRequestHelper
.HasFileContentDisposition(contentDisposition))
{
streamedFileContent =
await FileHelper.ProcessStreamedFile(section, contentDisposition,
_permittedExtensions, _fileSizeLimit);
}
else if (MultipartRequestHelper
.HasFormDataContentDisposition(contentDisposition))
{
var key = HeaderUtilities.RemoveQuotes(contentDisposition.Name).Value;
var encoding = FileHelper.GetEncoding(section);
if (encoding == null)
{
throw new AddMediaException($"The request could not be processed: Bad Encoding");
}
using (var streamReader = new StreamReader(
section.Body,
encoding,
detectEncodingFromByteOrderMarks: true,
bufferSize: 1024,
leaveOpen: true))
{
// The value length limit is enforced by
// MultipartBodyLengthLimit
var value = await streamReader.ReadToEndAsync();
if (string.Equals(value, "undefined",
StringComparison.OrdinalIgnoreCase))
{
value = string.Empty;
}
formAccumulator.Append(key, value);
if (formAccumulator.ValueCount >
_defaultFormOptions.ValueCountLimit)
{
throw new AddMediaException($"The request could not be processed: Key Count limit exceeded.");
}
}
}
}
// Drain any remaining section body that hasn't been consumed and
// read the headers for the next section.
section = await reader.ReadNextSectionAsync();
}
return(streamedFileContent, formAccumulator);
}
