public async Task <ImageDto> UploadFileAsync(IFormFile file)
{
var extension = Path.GetExtension(file.FileName);
if (string.IsNullOrEmpty(extension) || !_imageOptions.AllowedFileExtensions.Contains(extension))
{
throw new ImageStoreException($"'{extension}' extension is not allowed");
}
var fileName = Guid.NewGuid().ToString();
var thumbnailName = fileName + ".png";
var filePath = Path.Combine(_imageOptions.RootPath, _imageOptions.FilesPath, fileName);
var thumbnailPath = Path.Combine(_imageOptions.RootPath, _imageOptions.ThumbnailsPath, thumbnailName);
using (var stream = new FileStream(filePath, FileMode.Create))
{
await file.CopyToAsync(stream);
}
var thumbnailBytes = ParserService.ParseCaff(filePath);
if (thumbnailBytes.Length == 0)
{
if (File.Exists(filePath))
{
File.Delete(filePath);
}
throw new ImageStoreException("Corrupted .caff file");
}
await File.WriteAllBytesAsync(thumbnailPath, thumbnailBytes);
var image = new Dal.Entities.Image
{
FileName = fileName,
OriginalFileName = file.FileName,
Uploader = await _userManager.GetUserAsync(_user)
};
_dbContext.Images.Add(image);
await _dbContext.SaveChangesAsync();
return(new ImageDto
{
Id = image.Id,
FileName = image.OriginalFileName,
Url = $"/images/{image.FileName}",
ThumbnailUrl = $"/thumbnails/{image.FileName}.png",
Uploader = image.Uploader.UserName
});
}