public async Task<KendoUploadImg> UploadImage(int id)
{
// Check if the request contains multipart/form-data.
if (!Request.Content.IsMimeMultipartContent())
{
return null;
}
// upload image root path
var provider = new MultipartFormDataStreamProvider(_articleImageSaveFolder);
// Read the form data
await Request.Content.ReadAsMultipartAsync(provider);
// load the files
// at the moment, we only process one file
var file = provider.FileData.FirstOrDefault();
if (file == null)
{
return null;
}
// todo: validate file extension to avoid files of other types being upload
// On upload, files are given a generic name like "BodyPart_26d6abe1-3ae1-416a-9429-b35f15e6e5d5"
// so this is how you can get the original file name
var originalFileName = GetDeserializedFileName(file);
// build the new name of the imag file by datetime stamp
var newFileName = DateTime.Now.ToString("yyyyMMddhhmmss") + Path.GetExtension(originalFileName);
// create sub directory (article id) if it doesn't exist
// saving directory
var imgDirectory = Path.Combine(_articleImageSaveFolder, id.ToString());
// create if directory doesn't exist
if (!Directory.Exists(imgDirectory))
{
Directory.CreateDirectory(imgDirectory);
}
// copy the uploaded img into article folder
File.Copy(file.LocalFileName, Path.Combine(imgDirectory, newFileName), true);
// delete the oringinal img file from
File.Delete(file.LocalFileName);
// create thumbnail image
var thumbnailDirectory = Path.Combine(imgDirectory, "thumbnails");
// create folder if it doesn't exist
if (!Directory.Exists(thumbnailDirectory))
{
Directory.CreateDirectory(thumbnailDirectory);
}
// generate thumnail image then save into the directory
ImageHelper.CreateThumbnail(
Path.Combine(imgDirectory, newFileName), // source image
260, // width todo:??
150, // height
"image/jpeg", // mime type
Path.Combine(thumbnailDirectory, newFileName), // save path
100 // quality
);
// todo: insert new row into ArticleImageTable once image is uploaded
CreateArticleImage(id, id + "/" + newFileName, id + "/thumbnails/" + newFileName);
// return json data
var uploadedImg = new KendoUploadImg
{
Name = newFileName,
//Size = 1000,
Type = "f"
};
return uploadedImg;
}
public IEnumerable<KendoUploadImg> BrowseFiles(int id)
{
// upload file path
// check if upload folder exists
var imgDirectory = Path.Combine(_articleImageSaveFolder, id.ToString());
// create folder if it doesn't exist
if (!Directory.Exists(imgDirectory))
{
Directory.CreateDirectory(imgDirectory);
}
List<KendoUploadImg> images = new List<KendoUploadImg>();
// get file list from the directory
var files = Directory.EnumerateFiles(imgDirectory);
// iterate each img file
foreach (string file in files)
{
FileInfo info = new FileInfo(file);
int size = file.Length;
string filename = Path.GetFileName(file);
var image = new KendoUploadImg
{
Name = filename,
//Size = size,
Type = "f"
};
images.Add(image);
}
return images;
}
