using System;

// ReSharper disable once CheckNamespace
namespace DTS.DASLib.Service
{
    /// <inheritdoc />
    /// <summary>
    /// this attribute controls the minimum input range for a gain
    /// note that we could calculate this, but this allows us some flexibility
    /// in real life there are calibration and other factors that can affect what actually
    /// is achievable at a given gain step, so this minimum input could be a theoretical one
    /// http://fogbugz/fogbugz/default.asp?10080
    /// </summary>
    public class MinInputRangeAttribute : Attribute
    {
        /// <summary>
        /// returns the minimum input range for a gain
        /// http://fogbugz/fogbugz/default.asp?10080
        /// </summary>
        /// <param name="o"></param>
        /// <returns></returns>
        public static double GetMinInputRangemV(object o)
        {
            if (o == null) return 0D;
            var mi = o.GetType().GetMember(o.ToString());
            if (mi.Length <= 0) return 0D;
            return GetCustomAttribute(mi[0], typeof(MinInputRangeAttribute)) is MinInputRangeAttribute attr ? attr._minimumInputRangemV : 0D;
        }

        private readonly double _minimumInputRangemV;
        public MinInputRangeAttribute(double minInputRangemV)
        {
            _minimumInputRangemV = minInputRangemV;
        }
    }
}