/// <summary>
/// Renders the OpenGraph header tags for an article.
/// </summary>
/// <param name="htmlHelper">The HTML helper.</param>
/// <param name="content">The content.</param>
/// <returns>The <see cref="IHtmlString"/>.</returns>
/// <exception cref="T:System.Web.HttpException">The Web application is running under IIS 7 in Integrated mode.</exception>
/// <exception cref="T:System.InvalidOperationException">The current <see cref="T:System.Uri" /> instance is not an absolute instance.</exception>
/// <exception cref="T:System.ArgumentException">The specified <see cref="UriPartial.Authority"/> is not valid.</exception>
/// <exception cref="T:System.MemberAccessException">The <see cref="T:System.Lazy`1" /> instance is initialized to use the default constructor of the type that is being lazily initialized, and permissions to access the constructor are missing.</exception>
/// <exception cref="T:System.MissingMemberException">The <see cref="T:System.Lazy`1" /> instance is initialized to use the default constructor of the type that is being lazily initialized, and that type does not have a public, parameterless constructor.</exception>
public static IHtmlString OpenGraphArticle(this HtmlHelper htmlHelper, ISocialMediaTags content)
{
OpenGraphArticle openGraphContent = content.ToOpenGraphArticle();
return(openGraphContent == null
? MvcHtmlString.Empty
: htmlHelper.OpenGraph(openGraphMetadata: openGraphContent));
}
/// <summary>
/// Converts the <param name="content"></param> to an <see cref="Boilerplate.Web.Mvc.OpenGraph.OpenGraphArticle"/>.
/// </summary>
/// <param name="content">The content.</param>
/// <returns>The <see cref="Boilerplate.Web.Mvc.OpenGraph.OpenGraphArticle"/> for the <param name="content"></param>.</returns>
/// <exception cref="T:System.Web.HttpException">The Web application is running under IIS 7 in Integrated mode.</exception>
/// <exception cref="T:System.ArgumentException">The specified <see cref="UriPartial.Authority"/> is not valid.</exception>
/// <exception cref="T:System.InvalidOperationException">The current <see cref="T:System.Uri" /> instance is not an absolute instance.</exception>
/// <exception cref="T:System.MemberAccessException">The <see cref="T:System.Lazy`1" /> instance is initialized to use the default constructor of the type that is being lazily initialized, and permissions to access the constructor are missing.</exception>
/// <exception cref="T:System.MissingMemberException">The <see cref="T:System.Lazy`1" /> instance is initialized to use the default constructor of the type that is being lazily initialized, and that type does not have a public, parameterless constructor.</exception>
public static OpenGraphArticle ToOpenGraphArticle(this ISocialMediaTags content)
{
string imageUrl = content.TeaserImage.GetUrl();
if (!string.IsNullOrWhiteSpace(value: imageUrl))
{
return(new OpenGraphArticle(
!string.IsNullOrWhiteSpace(value: content.DisplayName) ? content.DisplayName : content.Name,
new OpenGraphImage(imageUrl: imageUrl),
content.GetUrl()));
}
Log.Debug($"[Social Tags] Page with id '{content.ContentLink.ID}' has no teaser image defined.");
return(null);
}
