protected Dictionary <string, ImageInfo> GenerateContentIdsForImageUrlsFromHtmlContent()
{
var result = new Dictionary <string, ImageInfo>();
// cid:{0}
if (HtmlContent != null)
{
var originalMessageContent = HtmlContent; // TODO: save this somewhere
// not sure if needed
string html = string.Format("<html><head></head><body>{0}</body></html>", HtmlContent);
List <Tuple <HtmlNode, string> > nodesToReplaceWithTextSmiley = new List <Tuple <HtmlNode, string> >();
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
var imageNodes = doc.DocumentNode.SelectNodes("//img");
if (imageNodes != null)
{
foreach (var imageNode in imageNodes)
{
var imgUrl = imageNode.GetAttributeValue("src", "");
var textSmiley = MessageUtils.GetTextReplacementForImageUrl(imgUrl);
if (!string.IsNullOrWhiteSpace(textSmiley))
{
nodesToReplaceWithTextSmiley.Add(Tuple.Create(imageNode, textSmiley));
continue;
}
if (string.IsNullOrWhiteSpace(imgUrl))
{
continue;
}
var cid = MimeUtils.GenerateMessageId();
imageNode.SetAttributeValue("src", $"cid:{cid}");
var imageInfo = new ImageInfo(imgUrl, imgUrl, ImageType.Public);
// Handles URLs like this: src =\"https://eu-api.asm.skype.com/v1/objects/0-weu-d11-00000000000000000000000000000000/views/imgo\"
var teamsImageUrlPattern = @"http.*?/objects/([0-9a-zA-Z-]+?)/views/imgo";
var match = Regex.Match(HtmlContent, teamsImageUrlPattern);
if (match.Success)
{
imageInfo.CacheKey = match.Value;
imageInfo.ImageType = ImageType.TeamsWithAuthentication;
}
result.Add(cid, imageInfo);
}
foreach (var textReplacement in nodesToReplaceWithTextSmiley)
{
try
{
logger.Debug("Replacing image node with smiley {0} (HTML was: {1})", textReplacement.Item2, textReplacement.Item1.OuterHtml);
textReplacement.Item1.ParentNode.ReplaceChild(HtmlNode.CreateNode($"<span>{textReplacement.Item2}</span>"), textReplacement.Item1);
}
catch (Exception e)
{
logger.Error(e, "Exception while replacing image node with smiley");
continue;
}
}
}
var bodyElement = doc.DocumentNode.SelectSingleNode("//body");
HtmlContent = bodyElement.InnerHtml;
}
return(result);
}