public static string ToLowercaseString(this OpenGraphType type)
{
switch (type)
{
case OpenGraphType.Article: return("article");
case OpenGraphType.Book: return("book");
case OpenGraphType.BooksAuthor: return("books.author");
case OpenGraphType.BooksBook: return("books.book");
case OpenGraphType.BooksGenre: return("books.genre");
case OpenGraphType.Business: return("business.business");
case OpenGraphType.FitnessCourse: return("fitness.course");
case OpenGraphType.GameAchievement: return("game.achievement");
case OpenGraphType.MusicAlbum: return("music.album");
case OpenGraphType.MusicPlaylist: return("music.playlist");
case OpenGraphType.MusicRadioStation: return("music.radio_station");
case OpenGraphType.MusicSong: return("music.song");
case OpenGraphType.Place: return("place");
case OpenGraphType.Product: return("product");
case OpenGraphType.ProductGroup: return("product.group");
case OpenGraphType.ProductItem: return("product.item");
case OpenGraphType.Profile: return("profile");
case OpenGraphType.RestaurantMenu: return("restaurant.menu");
case OpenGraphType.RestaurantMenuItem: return("restaurant.menu_item");
case OpenGraphType.RestaurantMenuSection: return("restaurant.menu_section");
case OpenGraphType.Restaurant: return("restaurant.restaurant");
case OpenGraphType.VideoEpisode: return("video.episode");
case OpenGraphType.VideoMovie: return("video.movie");
case OpenGraphType.VideoOther: return("video.other");
case OpenGraphType.VideoTvShow: return("video.tv_show");
default: return("website");
}
}
public string OpenGraphTags(string title, string imageUrl, string url, OpenGraphType type)
{
if(string.IsNullOrWhiteSpace(_siteName)
|| string.IsNullOrWhiteSpace(_appId))
{
throw new InvalidOperationException("OpenGraph not initilised, please call Initilise(string sitename, string appId) first.");
}
ValidateOpenGraphParameter(_appId, "appId");
ValidateOpenGraphUrlIsAbsolute(imageUrl, "imageUrl");
ValidateOpenGraphUrlIsAbsolute(url, "url");
return new StringBuilder()
.AddOpenGraphMetaTag("title", title)
.AddOpenGraphMetaTag("type", type.ToString().ToLower())
.AddOpenGraphMetaTag("image", imageUrl)
.AddOpenGraphMetaTag("url", url)
.AddOpenGraphMetaTag("site_name", _siteName)
.AddOpenGraphMetaTag("fb", "app_id", _appId)
.ToString();
}
