using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Structure;

using System;

namespace Sai.Toolkit.Revit.Assist
{
    /// <summary>
    ///     单位转换
    /// </summary>
    public static class UnitAssist
    {
        /// <summary>
        ///     小数四舍五入
        /// </summary>
        /// <param name="a"></param>
        /// <param name="digits">保留小数位数</param>
        /// <returns></returns>
        public static double FloatRounding(this double a, int digits)
        {
            return (double)Math.Round((decimal)a, digits, MidpointRounding.AwayFromZero);
        }

        /// <summary>
        ///     向上取整
        /// </summary>
        /// <param name="a"></param>
        /// <returns></returns>
        public static int GetCeiling(this double a)
        {
            return (int)Math.Ceiling(a);
        }

        public static double GetDiameterInMillimeter(this RebarBarType rbt)
        {
#if REVIT2025
            var d = rbt.BarNominalDiameter.ToMillimeter();
#else 
            var d = rbt.BarDiameter.ToMillimeter();
#endif
            return Math.Round(d, 1, MidpointRounding.ToEven);
        }

        /// <summary>
        ///     向下取整
        /// </summary>
        /// <param name="a"></param>
        /// <returns></returns>
        public static int GetFloor(this double a)
        {
            return (int)Math.Floor(a);
            //return (int)a;
        }

        public static double? GetValueFromString(this string text, Units units)
        {
#if USE_FORGETYPEID
			if (UnitFormatUtils.TryParse(units, SpecTypeId.Length, text, out var value))
#elif REVIT2018 || REVIT2020
            if (UnitFormatUtils.TryParse(units, UnitType.UT_Length, text, out var value))
#elif REVIT2025
            if (UnitFormatUtils.TryParse(units, SpecTypeId.Length, text, out var value))
#endif
            {
                return value;
            }

            return null;
        }

        /// <summary>
        ///     基于Revit的精度，判断值是否近似相等
        /// </summary>
        /// <param name="a"></param>
        /// <param name="b"></param>
        /// <returns></returns>
        public static bool IsAlmostEqual(double a, double b)
        {
            return IsZero(b - a);
        }

        /// <summary>
        ///     基于Revit的精度，判断值是否为零
        /// </summary>
        /// <param name="a"></param>
        /// <param name="tolerance"></param>
        /// <returns></returns>
        public static bool IsZero(double a, double tolerance = 1.0e-9)
        {
            return tolerance > Math.Abs(a);
        }

        /// <summary>
        ///     四舍五入取整
        /// </summary>
        /// <param name="a"></param>
        /// <returns></returns>
        public static int Rounding(this double a)
        {
            return (int)Math.Round(a, MidpointRounding.AwayFromZero);
        }

        /// <summary>
        ///     弧度转角度
        /// </summary>
        /// <param name="radian"></param>
        /// <returns></returns>
        public static double ToDegree(this double radian)
        {
            return radian * 180.0 / Math.PI;
        }

        /// <summary>
        ///     毫米转英尺
        /// </summary>
        /// <param name="mm"></param>
        /// <returns></returns>
        public static double ToFeet(this int mm)
        {
            return mm / 304.8;
        }

        /// <summary>
        ///     毫米转英尺
        /// </summary>
        /// <param name="mm"></param>
        /// <returns></returns>
        public static double ToFeet(this double mm)
        {
            return mm / 304.8;
        }

        /// <summary>
        ///     英尺转毫米
        /// </summary>
        /// <param name="ft"></param>
        /// <returns></returns>
        public static double ToMillimeter(this double ft)
        {
            return ft * 304.8;
        }

        /// <summary>
        ///     角度转弧度
        /// </summary>
        /// <param name="degree"></param>
        /// <returns></returns>
        public static double ToRadian(this double degree)
        {
            return degree * Math.PI / 180.0;
        }

        /// <summary>
        ///     平方毫米转平方英尺
        /// </summary>
        /// <param name="squaremm"></param>
        /// <returns></returns>
        public static double ToSquareFeet(this int squaremm)
        {
            return squaremm / (304.8 * 304.8);
        }

        /// <summary>
        ///     平方英尺转平方毫米
        /// </summary>
        /// <param name="squareft"></param>
        /// <returns></returns>
        public static double ToSquareMillimeter(this double squareft)
        {
            return squareft * (304.8 * 304.8);

        }
    }
}