public async Task <StorageFile> GetImage(string fileName, int width, int height)
{
try
{
var resizedFileName = $"{Path.GetFileNameWithoutExtension(fileName)}_{width}_{height}{Path.GetExtension(fileName)}";
//If exists cached resized file return it
if (await _imageStorageService.ImageExists(resizedFileName))
{
return(await _imageStorageService.GetImage(resizedFileName));
}
//If not exists cached resize file, generate it and store it
var file = await _imageStorageService.GetImage(fileName);
var resizeStream = _imageResizeService.ResizeImage(width, height, file.Stream);
await _imageStorageService.UploadImage(new ImageFile()
{
Stream = resizeStream,
ContentType = file.ContentType,
FileName = resizedFileName
}, true);
resizeStream.Position = 0;
file.Stream = resizeStream;
return(file);
}
catch (Exception e)
{
if (e is ServiceException)
{
throw;
}
throw new Exception($"Unable to process {fileName}", e);
}
}