using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using DTS.Common.Utilities;

namespace DTS.Common.Enums
{
    public class ExcitationVoltageOptions
    {
        /// <summary>
        /// All available excitation voltages.
        /// </summary>
        public enum ExcitationVoltageOption
        {
            /// <summary>
            /// undefined excitation voltage
            /// </summary>
            [VoltageMagnitude(0.0)]
            [Description("Undefined")]
            Undefined = 1,
            /// <summary>
            /// 2V
            /// </summary>
            [VoltageMagnitude(2.0)]
            [Description("2.0")]
            Volt2 = 2,
            /// <summary>
            /// 2.5V
            /// </summary>
            [VoltageMagnitude(2.5)]
            [Description("2.5")]
            Volt2_5 = 4,
            /// <summary>
            /// 3.0V
            /// </summary>
            [VoltageMagnitude(3.0)]
            [Description("3.0")]
            Volt3 = 8,
            /// <summary>
            /// 5V
            /// </summary>
            [VoltageMagnitude(5.0)]
            [Description("5.0")]
            Volt5 = 16,
            /// <summary>
            /// 10V
            /// </summary>
            [VoltageMagnitude(10.0)]
            [Description("10.0")]
            Volt10 = 32,
            /// <summary>
            /// 1V
            /// </summary>
            [VoltageMagnitude(1.0)]
            [Description("1.0")]
            Volt1 = 64
        }
        /// <summary>
        /// Attribute for specifying the numerical magnitude of the attached field's
        /// "representation".  Intended to be used with enumerations whose members represent
        /// voltage magnitude options so that the enum item can have a corresponding numerical
        /// value that can be extracted and used in calculations.
        /// </summary>
        [AttributeUsage(AttributeTargets.Field)]
        public class VoltageMagnitudeAttribute : Attribute
        {
            /// <summary>
            /// returns voltage magnitude
            /// </summary>
            public double Value { get; }

            /// <summary>
            /// constructs a <see cref="ExcitationVoltageOptions.VoltageMagnitudeAttribute" />
            /// with a given value
            /// </summary>
            /// <param name="value"></param>
            public VoltageMagnitudeAttribute(double value) { Value = value; }
        }

        /// <summary>
        /// Object for manipulating voltage option enumeration-attached
        /// <see cref="double"/> magnitude values.
        /// </summary>
        public class VoltageMagnitudeAttributeCoder
            : AttributeCoder<ExcitationVoltageOptions.ExcitationVoltageOption, VoltageMagnitudeAttribute, double>
        {
            /// <summary>
            /// Initializes a <see cref="ExcitationVoltageOptions.VoltageMagnitudeAttributeCoder"/> object.
            /// </summary>
            public VoltageMagnitudeAttributeCoder()
                : base(attribute => attribute.Value, null)
            {
            }
        }
    }
}