public async Task <Guid> SaveFileInDB(HttpPostedFileBase file)
{
if (file != null)
{
//create new operation
Operation operation = new Operation();
var task = Task.Run(
() =>
{
operation.Id = Guid.NewGuid();
operation.ContentType = file.ContentType;
operation.FileName = file.FileName;
operation.FileUploaded = FileConversionMethods.ConvertFileToByteArray(file.InputStream).Result;
operation.Date = DateTime.Now;
Image image = Image.FromStream(file.InputStream);
operation.Width = image.PhysicalDimension.Width;
operation.Height = image.PhysicalDimension.Height;
}
);
await task;
//save operation in DB
this.Operations.Add(operation);
this.SaveChanges();
return(operation.Id);
}
return(Guid.Empty);
}
public async Task <ActionResult> ResizeImage(UploadedIMGViewModel model)
{
if (ModelState.IsValid)
{
//get original image on server
Operation operation = Task.Run(async() => await _context.GetOperation(new Guid(model.IMG_Guid))).GetAwaiter().GetResult();
if (operation != null)
{
Image img = Task.Run(async() => await FileConversionMethods.ConvertByteArrayToImage(operation.FileUploaded)).GetAwaiter().GetResult();
if (img != null)
{
MemoryStream zipStream = new MemoryStream();
Dictionary <string, MemoryStream> memoryStreams = new Dictionary <string, MemoryStream>();
//resize the images by selected profiles and compile in a zip file and send as download
foreach (var network in model.CompatibleNetworks)
{
if (network.IsSelected)
{
foreach (var profile in network.IMG_Profile_Specs)
{
if (profile.IsSelected)
{
var imageResized = await ResizingMethods.ResizeImage(img, profile.Width, profile.Height);
//save img in folder Files_ToZip
//imageResized.Save(Path.Combine(Server.MapPath("~/Files_ToZip/"), network.Name + "-" + profile.ProfileName.Replace(" ", "_") + "__" + model.IMG_Name));
MemoryStream ms = new MemoryStream();
ImageFormat imageFormat = Utility.GetImageFormat(operation.ContentType.Split('/')[1]);
imageResized.Save(ms, imageFormat);
memoryStreams.Add(network.Name + "/" + network.Name + "-" + profile.ProfileName.Replace(" ", "_") + "__" + model.IMG_Name, ms);
}
}
}
}
//create the zip file to be downloaded
using (var archive = ZipArchive.Create())
{
//archive.AddAllFromDirectory(Server.MapPath("~/Files_ToZip/"));
foreach (var ms in memoryStreams)
{
if (!string.IsNullOrEmpty(ms.Key) && ms.Value != null)
{
archive.AddEntry(ms.Key, ms.Value, ms.Value.Length, DateTime.Now);
}
}
//archive.SaveTo(Path.Combine(Server.MapPath("~/File_Zip/") + "ResizedImages.zip"), CompressionType.Deflate);
archive.SaveTo(zipStream);
}
//free img ressource
img.Dispose();
// delete files and download result
//memoryStreams = null;
//List<string> filesToDelete = new List<string>(Directory.GetFiles(Server.MapPath("~/Files_ToZip/")));
//filesToDelete.AddRange(Directory.GetFiles(Server.MapPath("~/Files_Repo/")));
//foreach (string file in filesToDelete)
//{
// //if (file.Contains(fileUniqueName.ToString()))
// //{
// FileInfo fi = new FileInfo(file);
// if (fi != null && fi.Exists && fi.FullName != model.IMG_Path)
// fi.Delete();
// //}
//}
Task.Run(async() => await _context.EmptyByteArray(operation)).GetAwaiter().GetResult();
//Response.ClearContent();
//Response.ClearHeaders();
//Set zip file name
//Response.AppendHeader("statusCode", "200");
string fileName = "ResizedImages_" + operation.Id.ToString().Substring(5, 5) + "_" + DateTime.Now.ToShortDateString() + "_resizeit.zip";
//Response.AppendHeader("content-disposition", "attachment; filename=" + fileName);
var cd = new System.Net.Mime.ContentDisposition
{
// for example foo.bak
FileName = fileName,
// always prompt the user for downloading, set to true if you want
// the browser to try to show the file inline
Inline = true,
};
Response.AppendHeader("Content-Disposition", cd.ToString());
return(File(zipStream.ToArray(), "application/rar"));//File(Path.Combine(Server.MapPath("~/File_Zip/") + "ResizedImages.zip"), "application/zip");//RedirectToAction("Contact");
}
}
return(View("Error"));
}
return(RedirectToAction("Index"));
}