private static string CopyAttachments(string content)
{
var doc = new HtmlDocument();
doc.LoadHtml(content);
//process all nodes
var nodes = doc.DocumentNode.Descendants().Where(d => d.Attributes.Where(a => a.Value.Contains("https://netping.atlassian.net/wiki/download/")).Count() > 0);
foreach (var node in nodes)
{
var attributesWithFullUri = node.Attributes.Where(a => a.Value.Contains("https://netping.atlassian.net/wiki/download/"));
foreach (var attribute in attributesWithFullUri)
{
if (attribute.Value.Contains("https://netping.atlassian.net/wiki/download/"))
{
string oldFileName;
var newFileName = SaveFileFromUrlToLocal(attribute.Value, UrlBuilder.LocalPath_blogTempFiles, out oldFileName);
var oldUrl = attribute.Value.Remove(attribute.Value.IndexOf('?'));
attribute.Value = attribute.Value.Replace(oldUrl, UrlBuilder.GetblogFilesUrl() + newFileName);
ChangeLinksToDownloadedFileFromNode(node, oldFileName, newFileName, oldUrl);
}
}
if (node.Attributes["data-base-url"] != null && node.Attributes["data-base-url"].Value == "https://netping.atlassian.net/wiki")
{
node.Attributes["data-base-url"].Value = UrlBuilder.GetblogFilesUrl().ToString();
}
}
//change srcset attribute (workaround)
nodes = doc.DocumentNode.Descendants().Where(d => d.Attributes.Any(a => a.Name == "srcset") && d.Attributes.Any(a => a.Name == "src") && d.Attributes.Any(a => a.Name == "data-image-src"));
foreach (var node in nodes)
{
if (node.Attributes["src"] != null && node.Attributes["src"].Value.StartsWith(UrlBuilder.GetblogFilesUrl().ToString()) &&
node.Attributes["data-image-src"] != null && node.Attributes["data-image-src"].Value.StartsWith(UrlBuilder.GetblogFilesUrl().ToString()))
{
var oldUrl = node.Attributes["src"].Value.Remove(node.Attributes["src"].Value.IndexOf('?'));
var newUrl = node.Attributes["data-image-src"].Value.Remove(node.Attributes["data-image-src"].Value.IndexOf('?'));
if (Uri.IsWellFormedUriString(oldUrl, UriKind.Absolute) && Uri.IsWellFormedUriString(newUrl, UriKind.Absolute))
{
node.Attributes["srcset"].Value = node.Attributes["srcset"].Value.Replace(oldUrl, newUrl);
}
}
}
return(doc.DocumentNode.OuterHtml);
}
private static void ChangeLinksToDownloadedFileFromNode(HtmlNode node, string oldFileName, string newFileName, string oldUrl)
{
//rewrite the atrributes which have wiki/download/ to https://netping.atlassian.net/wiki/download/
//solve srcset issue
//var wikiDownloadsAttributes = node.Attributes.Where(a => a.Name == "srcset" && a.Value.Contains("/wiki/download/") && a.Value.Contains(oldFileName));
var wikiDownloadsAttributes = node.Attributes.Where(a => a.Name == "srcset" && a.Value.Contains("/wiki/download/") && !a.Value.Contains("https://netping.atlassian.net/wiki/download/") && a.Value.Contains(oldFileName));
foreach (var attribute in wikiDownloadsAttributes)
{
attribute.Value = attribute.Value.Replace("/wiki/download/", "https://netping.atlassian.net/wiki/download/");
}
var theSameFileNameAttributes = node.Attributes.Where(a => a.Value.Contains("https://netping.atlassian.net/wiki/download/") && a.Value.Contains(oldFileName));
//rewrite the atrributes with the same file name
foreach (var attribute in theSameFileNameAttributes)
{
if (attribute.Value.Contains(oldUrl))
{
attribute.Value = attribute.Value.Replace(oldUrl, UrlBuilder.GetblogFilesUrl() + newFileName);
}
}
}