ArchiSteamFarm.CardsFarmer.GetCardsRemaining C# (CSharp) Метод

		private async Task<ushort?> GetCardsRemaining(uint appID) {
			if (appID == 0) {
				Bot.ArchiLogger.LogNullError(nameof(appID));
				return 0;
			}

			HtmlDocument htmlDocument = await Bot.ArchiWebHandler.GetGameCardsPage(appID).ConfigureAwait(false);

			HtmlNode progressNode = htmlDocument?.DocumentNode.SelectSingleNode("//span[@class='progress_info_bold']");
			if (progressNode == null) {
				return null;
			}

			string progress = progressNode.InnerText;
			if (string.IsNullOrEmpty(progress)) {
				Bot.ArchiLogger.LogNullError(nameof(progress));
				return null;
			}

			Match match = Regex.Match(progress, @"\d+");
			if (!match.Success) {
				return 0;
			}

			ushort cardsRemaining;
			if (ushort.TryParse(match.Value, out cardsRemaining) && (cardsRemaining != 0)) {
				return cardsRemaining;
			}

			Bot.ArchiLogger.LogNullError(nameof(cardsRemaining));
			return null;
		}