using System;

namespace IStation.Common
{
    public class RoundHelper
    {
        public static int NpshRoundNumber_Large5 = 1;

        public static int NpshRoundNumber_small5 = 2;

        public static double GetDispValueFlow(double flow)
        {
            if (flow < 1.0)
            {
                return Math.Round(flow, 4);
            }

            if (flow < 5.0)
            {
                return Math.Round(flow, 3);
            }

            if (flow < 15.0)
            {
                return Math.Round(flow, 2);
            }

            return Math.Round(flow, 1);
        }

        public static double GetDispValueHead(double head)
        {
            if (head < 1.0)
            {
                return Math.Round(head, 4);
            }

            if (head < 5.0)
            {
                return Math.Round(head, 3);
            }

            if (head < 15.0)
            {
                return Math.Round(head, 2);
            }

            return Math.Round(head, 1);
        }

        public static double GetDispValuePress(double head)
        {
            if (head < 2.0)
            {
                return Math.Round(head, 4);
            }

            if (head < 5.0)
            {
                return Math.Round(head, 3);
            }

            if (head < 15.0)
            {
                return Math.Round(head, 2);
            }

            return Math.Round(head, 1);
        }

        public static double GetDispValuePower(double power)
        {
            if (power < 1.0)
            {
                return Math.Round(power, 4);
            }

            if (power < 5.0)
            {
                return Math.Round(power, 3);
            }

            if (power < 15.0)
            {
                return Math.Round(power, 2);
            }

            return Math.Round(power, 1);
        }

        public static double GetDispValueEta(double eta)
        {
            if (eta < 30.0)
            {
                return Math.Round(eta, 2);
            }

            return Math.Round(eta, 1);
        }

        public static double GetDispValueNPSH(double npsh)
        {
            if (npsh < 5.0)
            {
                return Math.Round(npsh, NpshRoundNumber_small5);
            }

            return Math.Round(npsh, NpshRoundNumber_Large5);
        }

        public static void Round_HEP(ref Eventech.Model.GroupPoint pt)
        {
            if (pt != null)
            {
                pt.H = GetDispValueHead(pt.H);
                pt.E = Math.Round(pt.E, 1);
                pt.P = GetDispValuePower(pt.P);
                pt.NPSH = GetDispValueNPSH(pt.NPSH);
            }
        }
    }
}