public static async Task <string> RenderPostForRSS(this IHtmlHelper helper, PostWithRelatedPostStubs post, string scheme, HostString host, IRetrievePostSlugs postSlugRetriever, ICache cache)
{
if (helper == null)
{
throw new ArgumentNullException(nameof(helper));
}
if (post == null)
{
throw new ArgumentNullException(nameof(post));
}
if (string.IsNullOrWhiteSpace(scheme))
{
throw new ArgumentException("Null/blank/whitespace-only scheme");
}
if (!host.HasValue)
{
throw new ArgumentException("No host value");
}
if (postSlugRetriever == null)
{
throw new ArgumentNullException(nameof(postSlugRetriever));
}
if (cache == null)
{
throw new ArgumentNullException(nameof(cache));
}
var cacheKey = "PostHelper-RenderPostForRSS-" + post.Id;
var cachedData = cache[cacheKey];
if (cachedData != null)
{
if ((cachedData is CachablePostContent cachedPostContent) && (cachedPostContent.LastModified >= post.LastModified))
{
return(cachedPostContent.RenderableContent);
}
cache.Remove(cacheKey);
}
var content = await GetRenderableContent(helper, post, previousPostIfAny : null, nextPostIfAny : null, includeTitle : false, includePostedDate : false, includeTags : false, postSlugRetriever);
var doc = new HtmlDocument();
doc.LoadHtml(content);
MakeUrlsAbsolute(doc, "a", "href", scheme, host);
MakeUrlsAbsolute(doc, "img", "src", scheme, host);
using (var writer = new StringWriter())
{
doc.Save(writer);
content = writer.ToString();
}
cache[cacheKey] = new CachablePostContent(content, post.LastModified);
return(content);
}
public static async Task <HtmlString> RenderPost(
this IHtmlHelper helper,
PostWithRelatedPostStubs post,
Post previousPostIfAny,
Post nextPostIfAny,
IRetrievePostSlugs postSlugRetriever,
ICache cache)
{
if (helper == null)
{
throw new ArgumentNullException(nameof(helper));
}
if (post == null)
{
throw new ArgumentNullException(nameof(post));
}
if (postSlugRetriever == null)
{
throw new ArgumentNullException(nameof(postSlugRetriever));
}
if (cache == null)
{
throw new ArgumentNullException(nameof(cache));
}
var cacheKey = string.Format(
"PostHelper-RenderPost-{0}-{1}-{2}",
post.Id,
(previousPostIfAny == null) ? 0 : previousPostIfAny.Id,
(nextPostIfAny == null) ? 0 : nextPostIfAny.Id
);
var cachedData = cache[cacheKey];
if (cachedData != null)
{
if ((cachedData is CachablePostContent cachedPostContent) && (cachedPostContent.LastModified >= post.LastModified))
{
return(new HtmlString(cachedPostContent.RenderableContent));
}
cache.Remove(cacheKey);
}
var content = await GetRenderableContent(helper, post, previousPostIfAny, nextPostIfAny, includeTitle : true, includePostedDate : true, includeTags : true, postSlugRetriever);
cache[cacheKey] = new CachablePostContent(content, post.LastModified);
return(new HtmlString(content));
}
