using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Uestc.Auto6.Dso.Hardware.Driver
{
    internal class FpgaVersion
    {
        public int MaxNum
        {
            get;
            set;
        }
        public int SubNum
        {
            get;
            set;
        }
        public int MinNum
        {
            get;
            set;
        }
        public string Designer
        {
            get;
            set;
        } = "";
        public string Comment
        {
            get;
            set;
        } = "";
        public DateTime BuildTime
        {
            get;
            set;
        }
        public string BuildTimeString
        {
            get
            {
                return BuildTime.Year + "-" + BuildTime.Month.ToString().PadLeft(2, '0') + "-"+BuildTime.Day.ToString().PadLeft(2, '0') + " " + BuildTime.Hour.ToString().PadLeft(2, '0') + ":" + BuildTime.Minute.ToString().PadLeft(2, '0') + ":" + BuildTime.Second.ToString().PadLeft(2, '0');

            }
        }
        public override string ToString()
        {
            return $"[Version:{MaxNum}.{SubNum}.{MinNum},CompileTime={BuildTimeString},Designer={Designer},Comment={Comment}]";
        }
        internal static bool ReadFPGAVersion(FpgaVersionRegs regs, ref FpgaVersion fpgaVersion)
        {
            int findFirstZeroPos(byte[] source)
            {
                for (int i = 0; i < source.Length; i++)
                {
                    if (source[i] == 0)
                        return i;
                }
                return source.Length;
            }
            #region 编译时间
            Int64 readBackCompileTime = 0;
            readBackCompileTime = HdIO.ReadReg(regs.CompileTime_H16);
            readBackCompileTime <<= 16;
            readBackCompileTime |= HdIO.ReadReg(regs.CompileTime_L16);
            if (readBackCompileTime == 0)
                return false;
            DateTime compileTime = new DateTime(1970, 1, 1, 0, 0, 0);
            compileTime = compileTime.AddSeconds(readBackCompileTime);
            compileTime = TimeZoneInfo.ConvertTimeFromUtc(compileTime, TimeZoneInfo.Local);
            fpgaVersion.BuildTime = compileTime;
            #endregion

            #region version
            UInt32 readBackVersion = 0;
            readBackVersion = HdIO.ReadReg(regs.VerionNo_H16);
            readBackVersion <<= 16;
            readBackVersion |= HdIO.ReadReg(regs.VerionNo_L16);
            fpgaVersion.MinNum = (Int32)(readBackVersion & 0xffff);
            fpgaVersion.SubNum = (Int32)(readBackVersion >> 16 & 0xff);
            fpgaVersion.MaxNum = (Int32)(readBackVersion >> 24 & 0xff);
            #endregion

            #region designer
            UInt16[] readBackDesigner = new UInt16[4];
            for (int i = 0; i < 4; i++)
                readBackDesigner[i] = (UInt16)HdIO.ReadReg(regs.Designer_Words[i]);
            byte[] bytesDesigner = new byte[8];
            Buffer.BlockCopy(readBackDesigner, 0, bytesDesigner, 0, 8);
            byte[] bytesDesigner2 = bytesDesigner.Reverse<byte>().ToArray();
            int firstZeroPos = findFirstZeroPos(bytesDesigner2);
            fpgaVersion.Designer = System.Text.Encoding.UTF8.GetString(bytesDesigner2, 0, firstZeroPos);

            #endregion

            #region comment
            UInt16[] readbackComment = new ushort[16];
            for (int i = 0; i < 16; i++)
                readbackComment[i] = (UInt16)HdIO.ReadReg(regs.Comment_Words[i]);
            byte[] bytesComment = new byte[16 * 2];
            Buffer.BlockCopy(readbackComment, 0, bytesComment, 0, 16 * 2);
            byte[] bytesComment2 = bytesComment.Reverse<byte>().ToArray();
            firstZeroPos = findFirstZeroPos(bytesComment2);
            fpgaVersion.Comment = System.Text.Encoding.UTF8.GetString(bytesComment2, 0, firstZeroPos);
            #endregion
            return true;
        }
        public static string GetAllFPGAVersionInfo()
        {
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.AppendLine($"[PCIE_Board]:{ Hd.currProduct?.PcieBd?.FpgaVersion?.ToString()}");
            stringBuilder.AppendLine($"[S6_Board]:{ Hd.currProduct?.S6Bd?.FpgaVersion?.ToString()}");
            stringBuilder.AppendLine($"[Process_Board]:{ Hd.currProduct?.ProcBd?.FpgaVersion?.ToString()}");

            for (int fpgaIndex = 0; fpgaIndex < AbstractAcqBd.FPGATotalCount; fpgaIndex++)
            {
                FpgaVersion? fpgaVersion = Hd.currProduct?.AcqBd?.GetFpgaVersion(fpgaIndex)??null;
                if (fpgaVersion != null)
                    stringBuilder.AppendLine($"[Acq_Board{fpgaIndex + 1}]:{fpgaVersion.ToString()}");
            }
            return stringBuilder.ToString();
        }
    }
    internal record FpgaVersionRegs(
    UInt32 CompileTime_L16, UInt32 CompileTime_H16,
    UInt32 VerionNo_L16, UInt32 VerionNo_H16,
    UInt32[/*4*/] Designer_Words,
    UInt32[/*16*/] Comment_Words);
}