public async Task <Result <HttpResponseMessage> > DownloadAnnotations(DownloadAnnotationsRequest request)
{
const string api = "api/Factory/DownloadAnnotations";
NameValueCollection query = HttpUtility.ParseQueryString(string.Empty);
if (request.DocumentId != null)
{
query["documentId"] = request.DocumentId;
}
if (request.Uri != null)
{
query["uri"] = request.Uri.ToString();
}
Result <HttpResponseMessage> result = await _owner.GetAsyncMessage(api, query);
return(result);
}
public HttpResponseMessage DownloadAnnotations([FromUri] DownloadAnnotationsRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if ((request.DocumentId == null && request.Uri == null) || (request.DocumentId != null && request.Uri != null))
{
throw new InvalidOperationException("DocumentId or Uri must not be null, but not both");
}
var cache = ServiceHelper.Cache;
DocumentCacheInfo cacheInfo;
if (request.Uri != null)
{
cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, request.Uri);
}
else
{
cacheInfo = DocumentFactory.GetDocumentCacheInfo(cache, request.DocumentId);
}
DocumentHelper.CheckCacheInfo(cacheInfo);
var name = "download";
if (!string.IsNullOrEmpty(cacheInfo.Name))
{
var documentMimeType = cacheInfo.MimeType;
var documentExtension = RasterCodecs.GetMimeTypeExtension(documentMimeType);
name = ServiceHelper.RemoveExtension(cacheInfo.Name, documentExtension);
}
var annotationsName = string.Format("{0}_ann.xml", name);
var responseFileName = annotationsName;
var responseContentType = "application/xml";
var documentId = cacheInfo.DocumentId;
Action <Stream, HttpContent, TransportContext> write = (outputStream, content, context) =>
{
DocumentFactory.DownloadAnnotations(cache, documentId, 0, -1, outputStream);
outputStream.Close();
};
var response = new HttpResponseMessage(HttpStatusCode.OK);
// For "Save to Google Drive" access, we must have the appropriate CORS headers.
// See https://developers.google.com/drive/v3/web/savetodrive
response.Headers.Remove("Access-Control-Allow-Headers");
response.Headers.Add("Access-Control-Allow-Headers", "Range");
response.Headers.Remove("Access-Control-Expose-Headers");
response.Headers.Add("Access-Control-Expose-Headers", "Cache-Control, Content-Encoding, Content-Range");
response.Content = new PushStreamContent(write, new MediaTypeHeaderValue(responseContentType));
ServiceHelper.SetResponseViewFileName(response, responseFileName, responseContentType);
return(response);
}
