Get Facebook Friends From ServiceStack Session

gistfile1.cs

		public class Friend
		{
			public String Id { get; set; }
			public String Name { get; set; }

		};

		private class Paging
		{
			public String next { get; set; }
			public String previous { get; set; }
		};


		private class Friends
		{
			public List<Friend> data { get; set; }
			public Paging paging { get; set; }

		};

		static private string DownloadFacebookFriends(string AccessTokenSecret, string FacebookFriendsUrl = "https://graph.facebook.com/me/friends?access_token={0}")
		{
			var url = FacebookFriendsUrl.Fmt(AccessTokenSecret);
			var json = url.DownloadUrl();
			return json;
		}

		static private List<Friend> GetFacebookFriends(string AccessTokenSecret)
		{
			List<Friend> friends;
			friends = new List<Friend>();
			string friendsJson = DownloadFacebookFriends(AccessTokenSecret);
			bool hasNext = true;
			while (hasNext)
			{
				Friends pagingFriends = JsonSerializer.DeserializeFromString<Friends>(friendsJson);
				friends.Concat(pagingFriends.data);
				if (pagingFriends.paging.next == null)
				{
					hasNext = false;
				}
				else
				{
					friendsJson = DownloadFacebookFriends(AccessTokenSecret, pagingFriends.paging.next);
				}
			}
			return friends;
		}

		static public List<Friend> GetFacebookFriendsFromSession(AuthUserSession session)
		{
			List<Friend> friends;
			var tokens = AuthSessionExtensions.GetOAuthTokens(session, "Facebook");
			var AccessTokenSecret = tokens.AccessTokenSecret;
			friends = GetFacebookFriends(AccessTokenSecret);
			return friends;
		}