using Ips.Library.Entity;

namespace Ips.Library.SigLoc
{
    public static class SigCalcUtil
    {
        public static int CalcMutil(long fs, int bandWidth, bool sup4m = true)
        {
            int mutil;
            var num = Convert.ToInt32(fs / (bandWidth * 1.25));
            if (!sup4m || num <= 16)
            {
                var num1 = (int)(Math.Log10(num) / Math.Log10(2));
                mutil = (int)Math.Pow(2, num1);
            }
            else
            {
                mutil = ((int)(num / 4)) * 4;
            }
            return mutil;
        }

        public static int CalcFs(long clockFreq, int bandWidth, int adcMutil = 1)
        {
            if (adcMutil == 0) return (int)clockFreq;
            var adfreq = clockFreq / adcMutil;
            var mutil = CalcMutil(adfreq, bandWidth, adcMutil <= 1);
            var fs = (int)(adfreq / mutil);
            return fs;
        }

        public static FreqPointInfo GetFreqPointBySigFreq(long sigFreq, SatType satType, long satTurn, long cfqTurn)
        {
            long upFreq, satDownFreq, downFreq;
            if (sigFreq < 400 * 1e6 && sigFreq > 200 * 1e6)
            {
                upFreq = sigFreq;
                if (satType == SatType.WarSat)
                {
                    satDownFreq = WarSatFreq.GetDownFreq(upFreq);
                    downFreq = satDownFreq + cfqTurn;
                }
                else
                {
                    satDownFreq = upFreq + satTurn;
                    downFreq = satDownFreq + cfqTurn;
                }
            }
            else if (sigFreq > 1000 * 1e6 && sigFreq < 2000 * 1e6)
            {
                downFreq = sigFreq;
                satDownFreq = sigFreq + cfqTurn;
                upFreq = satDownFreq + satTurn;
            }
            else if (sigFreq > 4000 * 1e6 && sigFreq < 6000 * 1e6)
            {
                downFreq = sigFreq - cfqTurn;
                satDownFreq = sigFreq;
                upFreq = sigFreq + satTurn;
            }
            else
            {
                satDownFreq = sigFreq - satTurn;
                downFreq = satDownFreq - cfqTurn;
                upFreq = sigFreq;
            }
            FreqPointInfo freqInfo = new FreqPointInfo()
            {
                SigFreq = sigFreq,
                UpFreq = upFreq,
                SatDownFreq = satDownFreq,
                DownFreq = downFreq
            };
            return freqInfo;
        }

        //public static long GetDownFreq(long upFreq, SatType satType, long satTurn, long cfqTurn)
        //{
        //    long downFreq = 0;
        //    if (upFreq < 400 * 1e6 && upFreq > 200 * 1e6)
        //    {
        //        if (satType == SatType.WarSat)
        //        {
        //            downFreq = WarSatFreq.GetDownFreq(upFreq) + cfqTurn;
        //        }
        //        else
        //        {
        //            downFreq = upFreq + satTurn + cfqTurn;
        //        }
        //    }
        //    else
        //    {
        //        downFreq = upFreq - satTurn - cfqTurn;
        //    }
        //}
    }
}