public static OpenGraphMetadata MapMetaData(IList <HtmlNode>?htmlMetaTags, string source)
{
Guard.Against.NullOrWhiteSpace(() => source);
var metadata = new OpenGraphMetadata {
Source = source
};
if (htmlMetaTags == null)
{
return(metadata);
}
foreach (var tag in htmlMetaTags)
{
var content = tag.GetAttributeValue("content", null);
if (content == null)
{
continue;
}
var property = tag.GetAttributeValue("property", null) ?? tag.GetAttributeValue("name", null);
MapValues(property, metadata, content);
}
return(metadata);
}
private static void MapValues(string property, OpenGraphMetadata metadata, string content)
{
object?_ = property switch
{
"og:type" => metadata.Type = content,
"og:title" => metadata.Title = content.DeEntitize(),
"og:url" => metadata.Url = content,
"og:description" => metadata.Description = content.DeEntitize(),
"og:site_name" => metadata.SiteName = content.DeEntitize(),
"og:image" => metadata.Image = content,
"og:image:width" => metadata.ImageWidth = content.AsIntOrNull(),
"og:image:height" => metadata.ImageHeight = content.AsIntOrNull(),
"og:locale" => metadata.Locale = content,
"article:published_time" => metadata.ArticlePublishedTime = content.AsDateTimeOrNull(),
"article:modified_time" => metadata.ArticleModifiedTime = content.AsDateTimeOrNull(),
_ => string.Empty
};
}
}
