public async Task <BlobContent> ReadBlobContentAsync(long tenantId, long elementId, long blobSetId, string blobLabel)
{
HtmlElementSettings settings = await _elementRepository.ReadElementSettingsAsync(tenantId, elementId);
if (settings == null)
{
return(null);
}
HtmlBlobSet blobSet = settings.BlobSets.Where(s => s.BlobSetId == blobSetId).FirstOrDefault();
if (blobSet == null)
{
return(null);
}
long?blobId = GetBlobId(blobSet, blobLabel);
if (blobId == null)
{
return(null);
}
return(await _storageService.ReadBlobContentAsync(tenantId, blobId.Value, GetHtmlImagePath(elementId)));
}
private HtmlPreviewImage GetHtmlPreviewImageFromHtmlBlob(HtmlBlobSet blobSet, IDictionary <long, BlobImage> blobsById)
{
BlobImage blobImage = blobsById[blobSet.PreviewImageBlobId];
return(new HtmlPreviewImage
{
BlobSetId = blobSet.BlobSetId,
Width = blobImage.Width,
Height = blobImage.Height,
Name = blobImage.Name
});
}
private long?GetBlobId(HtmlBlobSet blobSet, string blobLabel)
{
switch (blobLabel)
{
case OriginalBlobLabel:
return(blobSet.ImageBlobId);
case PreviewBlobLabel:
return(blobSet.PreviewImageBlobId);
case ThumbnailBlobLabel:
return(blobSet.ThumbnailImageBlobId);
default:
return(blobSet.PreviewImageBlobId);
}
}