///
/// Copyright (c) 2017 Sensus Metering Systems
///
using System;
using System.Collections.Generic;

namespace TBF.Rig.Network.Camera.CLP1611
{
	public class RoisAndResults
	{
		public const int MaxRegisteredRois = 4;	/// Max. count of registered (and measured) ROI-s

		public long CameraTimeMs;
		public int[] Angles;

		private IList<string> roiParams;
		public int RegisteredRoisCount { get { return roiParams.Count; } }


		public RoisAndResults()
		{
			Angles = new int[MaxRegisteredRois];
			roiParams = new List<string>();
		}


		public void ClearRoiParams()
		{
			lock (this)
			{
				roiParams.Clear();
			}
		}

		public int RegisterRoi(string roiParam)
		{
			lock (this)
			{
				if (this.roiParams.Count >= MaxRegisteredRois) return 0;

				this.roiParams.Add(roiParam);
				return this.roiParams.Count;		/// return a handle 1 .. MaxRegisteredRois
			}
		}

		public string GetRoiParams(int roiHandle)

		{
			lock (this)
			{
				if (roiHandle > 0 && roiHandle <= roiParams.Count)
				{
					return roiParams[roiHandle - 1];
				}
				else
				{
					return string.Empty;
				}
			}
		}

		public void SetResults(long timeMs, int[] angles)
		{
			lock (this)
			{
				CameraTimeMs = timeMs;
				for (int i = 0; i < Math.Min(angles.Length, Angles.Length); i++)
				{
					Angles[i] = angles[i];
				}
			}
		}

		public int GetResult(int roiHandle, out long timeMs)
		{
			lock (this)
			{
				if (roiHandle > 0 && roiHandle <= roiParams.Count)
				{
					timeMs = CameraTimeMs;
					return Angles[roiHandle - 1];
				}
				else
				{
					timeMs = 0;
					return 0;
				}
			}
		}
	}
}