public async Task <byte[]> GetAssetAsync(AssetDownloadRequest asset)
{
if (!File.Exists(asset.FilePath))
{
return(null);
}
using (var stream = new FileStream(asset.FilePath, FileMode.Open, FileAccess.Read))
{
stream.Seek(0, SeekOrigin.Begin);
byte[] output = new byte[stream.Length];
await stream.ReadAsync(output, 0, output.Length);
return(output);
}
}
public async Task <byte[]> GetAssetAsync(AssetDownloadRequest asset)
{
var container = await GetContainerAsync(asset.ContainerName);
var blockBlob = container.GetBlockBlobReference(asset.FileName);
if (!await blockBlob.ExistsAsync())
{
return(null);
}
using (var blobStream = blockBlob.OpenRead())
{
blobStream.Seek(0, SeekOrigin.Begin);
byte[] output = new byte[blobStream.Length];
await blobStream.ReadAsync(output, 0, output.Length);
return(output);
}
}
public async Task <IActionResult> DownloadAsync(string fileName, string container = "", string attachment = "")
{
FilePath = Path.Combine(_settings.CurrentValue.AssetDirectory, fileName);
if (container.HasValue())
{
CloudContainerName = container;
}
var provider = new FileExtensionContentTypeProvider();
if (!provider.TryGetContentType(fileName, out string contentType))
{
contentType = "application/octet-stream";
}
var downloadRequest = new AssetDownloadRequest()
{
ContainerName = CloudContainerName,
FileName = fileName,
FilePath = this.FilePath,
};
var stream = await _assetStorageService.GetAssetAsync(downloadRequest);
if (stream is null)
{
return(NotFound());
}
if (attachment.HasValue() && attachment == "true")
{
var fileNameEncoded = HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8);
Response.Headers["Content-Disposition"] = "attachment; filename=\"" + fileNameEncoded + "\"";
}
return(File(stream, contentType));
}
