private async Task <string> UploadAsync(CommandContext context, AssetFile file)
{
string hash;
using (var hashStream = new HasherStream(file.OpenRead(), HashAlgorithmName.SHA256))
{
await assetStore.UploadAsync(context.ContextId.ToString(), hashStream);
hash = $"{hashStream.GetHashStringAndReset()}{file.FileName}{file.FileSize}".Sha256Base64();
}
return(hash);
}
public async Task EnhanceAsync(Media media, AssetFile file)
{
if (media.Type == MediaType.Unknown)
{
using (var uploadStream = file.OpenRead())
{
var imageInfo = await assetThumbnailGenerator.GetImageInfoAsync(uploadStream);
if (imageInfo != null)
{
media.Type = MediaType.Image;
media.Metadata.SetPixelWidth(imageInfo.PixelWidth);
media.Metadata.SetPixelHeight(imageInfo.PixelHeight);
}
}
}
}
public async Task <Media> UploadAsync(string appId, AssetFile file, CancellationToken ct = default)
{
Guard.NotNullOrEmpty(appId, nameof(appId));
Guard.NotNull(file, nameof(file));
var media = new Media
{
AppId = appId,
FileName = file.FileName,
FileSize = file.FileSize,
MimeType = file.MimeType,
Metadata = new MediaMetadata()
};
foreach (var metadataSource in mediaMetadataSources)
{
await metadataSource.EnhanceAsync(media, file);
}
var infos = new List <string>();
foreach (var metadataSource in mediaMetadataSources)
{
infos.AddRange(metadataSource.Format(media));
}
media.FileInfo = string.Join(", ", infos);
using (var stream = file.OpenRead())
{
await mediaFileStore.UploadAsync(appId, media, stream, ct);
}
await mediaRepository.UpsertAsync(media, ct);
return(media);
}