IMAX monitoring.cs

class Config
{
	public static Int32 GoodRowMin => 6;
	public static Int32 GoodRowMax => 9;
	public static Int32 GoodColumnMin => 8;
	public static Int32 GoodColumnMax => 17;
}

void Main()
{
	while (true)
	{
		Worker(237315);
		Thread.Sleep(TimeSpan.FromSeconds(30));
	}
}

void Worker(Int32 showtimeId)
{
	var allSeats = GetHallScheme(showtimeId);
	var goodSeats = allSeats.Where(s => s.IsGood()).ToList();
	if (goodSeats.Count > 0)
	{
		"Founded".Dump();
		var player = new SoundPlayer(@"C:\Windows\Media\Alarm01.wav");
		player.Play();
	}
}

IEnumerable<Seat> GetHallScheme(Int32 showrimeId)
{
	var uri = $"http://cabinet.planetakino.ua/Hall/HallScheme?showtimeId={showrimeId}";
	var request = HttpWebRequest.CreateHttp(uri);
	using (var response = request.GetResponse())
	using (var stream = response.GetResponseStream())
	using (var reader = new StreamReader(stream))
	{
		var content = reader.ReadToEnd();
		var data = XDocument.Parse($"<root>{content}</root>");
		var elements = ((IEnumerable<Object>)data.XPathEvaluate("root/div[@class=\"hallContainer\"]/div[@exp-data-row]")).Cast<XElement>();
		return elements.Select(div => new Seat
		{
			Row = Int32.Parse(div.Attribute("exp-data-row").Value),
			Column = Int32.Parse(div.Attribute("exp-data-col").Value)
		});
	}
}

static class SeatExtensions
{
	public static Boolean IsGood(this Seat s)
	{
		return s.Row >= Config.GoodRowMin && s.Row <= Config.GoodRowMax && s.Column >= Config.GoodColumnMin && s.Column <= Config.GoodColumnMax;
	}
}

class Seat
{
	public Int32 Row { get; set; }
	public Int32 Column { get; set; }
}