using System;

namespace Xylem.Common.CommonCore.CommonMeasurementUnits
{
    public abstract class Unit
    {
        public const Int32 MsInSec = 1000;
        public const Int32 SecInMin = 60;
        public const Int32 MinInH = 60;
        public const Int32 HInDay = 24;
        public const Int32 MlInL = 1000;
        public const Int32 LInm3 = 1000;
        public const Int32 PInBar = 100000;
        public const Int32 MAInH = 1000;

        protected Double value;

        public override String ToString() 
            => value.ToString();

        public override Boolean Equals(Object obj) 
            => value.Equals(obj);

        public override Int32 GetHashCode()
            => value.GetHashCode();

        public static explicit operator Double (Unit @base)
            => @base?.value ?? default(Double);

        public static explicit operator Double? (Unit @base)
            => @base?.value;
    }
}