public async Task ValidateCreatePageImagesAsync(long tenantId, long pageId, IBlobContent content)
{
// Get page details
Page page = await _pageRepository.ReadPageAsync(tenantId, pageId);
// Check that master page associated with page allows images
MasterPage masterPage = await _masterPageRepository.ReadMasterPageAsync(tenantId, page.MasterPageId);
if (!masterPage.HasImage)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, PageResource.ImageNotAllowedMessage));
}
// Check that blob type is correct
if (content.Type != ContentTypes.Gif && content.Type != ContentTypes.Jpeg && content.Type != ContentTypes.Png)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, PageResource.ImageInvalidMessage));
}
// Check that supplied upload is an image
ImageMetadata metadata = _imageAnalysisService.GetImageMetadata(content.Stream);
if (metadata == null)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, PageResource.ImageInvalidMessage));
}
// Check image dimension constraints (minimum width and height)
if (metadata.Width < masterPage.ImageMinWidth.Value || metadata.Height < masterPage.ImageMinHeight.Value)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, string.Format(PageResource.ImageDimensionsInvalidMessage, masterPage.ImageMinWidth.Value, masterPage.ImageMinHeight.Value)));
}
}
private BlobImage GetBlobImage(IBlobContent content)
{
long position = content.Stream.Position;
ImageMetadata metadata = _imageAnalysisService.GetImageMetadata(content.Stream);
content.Stream.Position = position;
return(new BlobImage
{
BlobType = BlobType.Image,
Height = metadata.Height,
Width = metadata.Width
});
}