using System;

namespace DTS.Common.Classes.Sensors
{
    /// <summary>
    /// public helper class for ZeroRefence in SIFs, which is serialized to an int
    /// </summary>
    public class ZeroRef
    {
        public enum ZeroType
        {
            AverageOverTime,
            UsePreEventDiagnostics,
            UseZeroMv
        }

        public ZeroType ZeroMethod { get; }

        public ZeroRef(string zeroref)
        {
            switch (zeroref)
            {
                case "0":
                    ZeroMethod = ZeroType.AverageOverTime;
                    break;
                case "1":
                    ZeroMethod = ZeroType.UsePreEventDiagnostics;
                    break;
                case "2":
                    ZeroMethod = ZeroType.UseZeroMv;
                    break;
                default:
                    throw new NotSupportedException("TDAS::ZeroRef Invalid ZeroRef " + zeroref);
            }
        }
        public ZeroRef(ZeroType type) { ZeroMethod = type; }
        public override string ToString()
        {
            switch (ZeroMethod)
            {
                case ZeroType.AverageOverTime:
                    return "0";
                case ZeroType.UsePreEventDiagnostics:
                    return "1";
                case ZeroType.UseZeroMv:
                    return "2";
                default:
                    throw new NotSupportedException("TDAS::ZeroRef Invalid ZeroRef " + ZeroMethod);
            }
        }
    }
}