namespace StoicGoose.Core.Display
{
	public class DisplayTimer
	{
		public bool Enable { get; set; }
		public bool Repeating { get; set; }
		public ushort Frequency { get; set; }

		public ushort Counter { get; set; }

		public DisplayTimer()
		{
			Reset();
		}

		public void Reset()
		{
			Enable = Repeating = false;
			Frequency = Counter = 0;
		}

		public void Reload()
		{
			Counter = Frequency;
		}

		public bool Step()
		{
			var counterNew = (ushort)(Counter - 1);

			if (Enable && Counter != 0)
			{
				Counter = counterNew;
				if (Repeating && Counter == 0)
					Reload();
			}
			return counterNew == 0;
		}
	}
}