/// <summary>
/// Upload a file and return a JSON result
/// </summary>
/// <param name="file">The file to upload.</param>
/// <param name="fileCollection"></param>
/// <param name="type"> type of upload</param>
/// <returns>a FileUploadJsonResult</returns>
/// <remarks>
/// It is not possible to upload files using the browser's XMLHttpRequest
/// object. So the jQuery Form Plugin uses a hidden iframe element. For a
/// JSON response, a ContentType of application/json will cause bad browser
/// behavior so the content-type must be text/html. Browsers can behave badly
/// if you return JSON with ContentType of text/html. So you must surround
/// the JSON in textarea tags. All this is handled nicely in the browser
/// by the jQuery Form Plugin. But we need to overide the default behavior
/// of the JsonResult class in order to achieve the desired result.
/// </remarks>
/// <seealso cref="http://malsup.com/jquery/form/#code-samples"/>
// [Authorize]
public FileUploadJsonResult AjaxUpload(IEnumerable <HttpPostedFileBase> fileCollection, UploadType type, string uploadPath)
{
_type = type;
// TODO: Add your business logic here and/or save the file
//System.Threading.Thread.Sleep(2000); // Simulate a long running upload
// Some browsers send file names with full path. This needs to be stripped.
//string physicalPath = PathForUpload(file.FileName, 0);
//// The files are not actually saved in this demo
//file.SaveAs(physicalPath);
//lastSavedFile.Add(ResolvePath(physicalPath));
foreach (string file in Request.Files)
{
var postedFile = Request.Files[file];
string thumbPath;
TimeSpan aduration;
string filetype;
UploadRepository.StoreMediaTemp(HttpContext, postedFile, _type, out thumbPath, out uploadPath, out aduration, out filetype);
// Return JSON
if (postedFile != null)
{
if (Request.Url != null)
{
var result = new FileUploadJsonResult
{
Data =
new
{
message =
string.Format("Uploaded {0} successfully.", postedFile.FileName),
thumbnail = _path + "/" + thumbPath.Replace(Request.ServerVariables["APPL_PHYSICAL_PATH"], String.Empty),
type = !String.IsNullOrEmpty(filetype)?filetype : MimeExtensionHelper.FindMime(uploadPath, true),
text = MimeExtensionHelper.FindMime(uploadPath, true).Contains("text") ? thumbPath : "",
path = uploadPath.Replace(Request.ServerVariables["APPL_PHYSICAL_PATH"], String.Empty),
originalFileName = postedFile.FileName,
duration = aduration.ToString()
}
};
return(result);
}
}
}
return(new FileUploadJsonResult {
Data = new { message = "Upload Failed" }
});
}
protected virtual Stream EnsureMaxImageSize(Stream blobStream, Size maxSize, ImageQueue image)
{
using (var bitmap = Image.FromStream(blobStream))
{
// if the image's dimension if larger than max size, we resize it to:
// save the bandwidth
// and also to prevent any quota/litmitation error might have
if (bitmap.Width > maxSize.Width || bitmap.Height > maxSize.Height)
{
double heightWidthRatio = ((double)bitmap.Height) / bitmap.Width;
var newSize = new Size(maxSize.Width, Convert.ToInt32(maxSize.Width * heightWidthRatio));
if (newSize.Height > maxSize.Height)
{
newSize = new Size(Convert.ToInt32(maxSize.Height / heightWidthRatio), maxSize.Height);
}
var imageFormat = FileExtensions.GetImageFormat(_mimeExtensionHelper.FindMime(Path.GetExtension(image.FileName)), true);
return(_imageResizer.Resize(newSize, true, blobStream, imageFormat).Result);
}
return(blobStream);
}
}