/// <summary>
/// Encode a set of transmission parts into a stream suitable for
/// transmission with or without Binary-Encoding Attachment.
/// </summary>
/// <param name="parts">The parts to encode.</param>
/// <param name="contentType">The MIME Type of the TransmissionPartCollection contents.</param>
/// <param name="withBinaryEncodingAttachment">if true, save all Attachments with binary-encoding type. </param>
/// <returns>An OptimalEncodingResult with the stream and the name of the backing file store if there is one.</returns>
EncodingResult OptimalEncode(ITransmissionPartCollection parts, out string contentType, bool withBinaryEncodingAttachment)
{
using (var mime = new Mime()) {
mime.NewMultipartRelated();
foreach (ITransmissionPart part in parts)
{
var mimePart = new Mime();
mimePart.SetHeaderField("Content-ID", part.Id);
//TODO optimize call to get the bytes from the stream
byte[] data = null;
using (var partStream = part.CopyOfStream()) {
using (var sr = new BinaryReader(partStream)) {
data = sr.ReadBytes((int)partStream.Length);
}
}
//TODO determine if this is how we should handle it.
if (!part.MimeType.Equals(MimeTypeHelper.JdfMimeType) &&
!part.MimeType.Equals(MimeTypeHelper.JmfMimeType) &&
!part.MimeType.StartsWith("text/"))
{
//for text and jdf/jmf documents, do not base64 encode them.
mimePart.EncodingType = Mime.MimeEncoding.Base64;
}
else
{
mimePart.EncodingType = Mime.MimeEncoding.Binary;
}
mimePart.SetBodyFromBinary(data);
mimePart.ContentType = part.MimeType;
mime.AppendPart(mimePart);
}
contentType = mime.ContentType;
mime.CreateDefaultType();
//TODO see if there is a more optimal way to get the stream from the mime.
return(new EncodingResult(mime.GetMimeStream(), contentType));
}
}
