using HslCommunication.Core;
using HslCommunication.Core.IMessage;
using HslCommunication.Core.Net;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HslCommunication.BasicFramework;

namespace HslCommunication.Profinet.LSIS
{
    /// <summary>
    /// XGB Fast Enet I/F module supports open Ethernet. It provides network configuration that is to connect LSIS and other company PLC, PC on network
    /// </summary>
    /// <remarks>
    /// Address example likes the follow
    /// [welcome to finish]
    /// </remarks>
    public class XGBFastEnet : NetworkDeviceBase<LsisFastEnetMessage, RegularByteTransform>
    {
        #region Constractor

        /// <summary>
        /// Instantiate a Default object
        /// </summary>
        public XGBFastEnet()
        {
            WordLength = 2;
            IpAddress = string.Empty;
            Port = 2004;
        }

        /// <summary>
        /// Instantiate a object by ipaddress and port
        /// </summary>
        /// <param name="ipAddress">the ip address of the plc</param>
        /// <param name="port">the port of the plc, default is 2004</param>
        public XGBFastEnet(string ipAddress, int port)
        {
            WordLength = 2;
            IpAddress = ipAddress;
            Port = port;
        }

        #endregion

        #region Public Properties

        /// <summary>
        /// CPU TYPE
        /// </summary>
        public string CpuType { get; private set; }

        /// <summary>
        /// Cpu is error
        /// </summary>
        public bool CpuError { get; private set; }

        /// <summary>
        /// RUN, STOP, ERROR, DEBUG
        /// </summary>
        public LSCpuStatus LSCpuStatus { get; private set; }

        /// <summary>
        /// FEnet I/F module’s Base No.
        /// </summary>
        public byte BaseNo
        {
            get => baseNo;
            set => baseNo = value;
        }

        /// <summary>
        /// FEnet I/F module’s Slot No.
        /// </summary>
        public byte SlotNo
        {
            get => slotNo;
            set => slotNo = value;
        }

        #endregion

        #region Read Write

        /// <summary>
        /// Read Bytes from plc, you should specify address
        /// </summary>
        /// <param name="address">Start Address, for example: M100</param>
        /// <param name="length">Array of data Lengths</param>
        /// <returns>Whether to read the successful result object</returns>
        /// <exception cref="NullReferenceException"></exception>
        /// <remarks>
        /// </remarks>
        /// <example>
        /// </example>
        public override OperateResult<byte[]> Read(string address, ushort length)
        {
            // build read command
            OperateResult<byte[]> coreResult = BuildReadByteCommand(address, length);
            if (!coreResult.IsSuccess) return coreResult;

            // communication
            var read = ReadFromCoreServer(PackCommand(coreResult.Content));
            if (!read.IsSuccess) return OperateResult.CreateFailedResult<byte[]>(read);

            // analysis read result
            return ExtractActualData(read.Content);
        }

        /// <summary>
        /// Write bytes to plc, you should specify bytes, can't be null
        /// </summary>
        /// <param name="address">Start Address, for example: M100</param>
        /// <param name="value">source dara</param>
        /// <returns>Whether to write the successful result object</returns>
        /// <exception cref="NullReferenceException"></exception>
        public override OperateResult Write(string address, byte[] value)
        {
            // build write command
            OperateResult<byte[]> coreResult = BuildWriteByteCommand(address, value);
            if (!coreResult.IsSuccess) return coreResult;

            // communication
            var read = ReadFromCoreServer(PackCommand(coreResult.Content));
            if (!read.IsSuccess) return OperateResult.CreateFailedResult<byte[]>(read);

            // analysis read result
            return ExtractActualData(read.Content);
        }

        #endregion

        #region Read Write Byte

        /// <summary>
        /// Read single byte value from plc
        /// </summary>
        /// <param name="address">Start address</param>
        /// <returns>result</returns>
        public OperateResult<byte> ReadByte(string address)
        {
            var read = Read(address, 1);
            if (!read.IsSuccess) return OperateResult.CreateFailedResult<byte>(read);

            return OperateResult.CreateSuccessResult(read.Content[0]);
        }

        /// <summary>
        /// Write single byte value to plc
        /// </summary>
        /// <param name="address">Start address</param>
        /// <param name="value">value</param>
        /// <returns>Whether to write the successful</returns>
        public OperateResult Write(string address, byte value)
        {
            return Write(address, new byte[] { value });
        }
        /// <summary>
        /// WriteCoil
        /// </summary>
        /// <param name="address"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public OperateResult WriteCoil(string address, bool value)
        {

            return Write(address, new byte[] { (byte)(value == true ? 0x01 : 0x00), 0x00 });
        }
        #endregion

        #region Private Member

        private byte[] PackCommand(byte[] coreCommand)
        {
            byte[] command = new byte[coreCommand.Length + 20];
            Encoding.ASCII.GetBytes(CompanyID1).CopyTo(command, 0);
            switch (cpuInfo)
            {
                case LSCpuInfo.XGK: command[12] = 0xA0; break;
                case LSCpuInfo.XGI: command[12] = 0xA4; break;
                case LSCpuInfo.XGR: command[12] = 0xA8; break;
                case LSCpuInfo.XGB_MK: command[12] = 0xB0; break;
                case LSCpuInfo.XGB_IEC: command[12] = 0xB4; break;
                default: break;
            }
            command[13] = 0x33;
            BitConverter.GetBytes((short)coreCommand.Length).CopyTo(command, 16);
            command[18] = (byte)(baseNo * 16 + slotNo);

            int count = 0;
            for (int i = 0; i < 19; i++)
            {
                count += command[i];
            }
            command[19] = (byte)count;

            coreCommand.CopyTo(command, 20);

            string hex = SoftBasic.ByteToHexString(command, ' ');
            return command;
        }

        #endregion

        #region Const Value

        private const string CompanyID1 = "LSIS-XGT";
        private const string CompanyID2 = "LGIS-GLOGA";
        private LSCpuInfo cpuInfo = LSCpuInfo.XGK;
        private byte baseNo = 0;
        private byte slotNo = 3;

        #endregion

        #region Static Helper

        /// <summary>
        /// AnalysisAddress
        /// </summary>
        /// <param name="address"></param>
        /// <param name="isRead"></param>
        /// <returns></returns>
        public static OperateResult<string> AnalysisAddress(string address, bool isRead)
        {
            // P,M,L,K,F,T
            // P,M,L,K,F,T,C,D,S
            StringBuilder sb = new StringBuilder();
            try
            {
                sb.Append("%");
                char[] types = new char[] { 'P', 'M', 'L', 'K', 'F', 'T', 'C', 'D', 'S', 'Q', 'I', 'N', 'U', 'Z', 'R' };
                bool exsist = false;
                int baseAddress;
                int LsBaseNumber = 0;
                int LsSlotNumber = 0;
                string fullAddress = address;
                if (isRead)
                {
                    for (int i = 0; i < types.Length; i++)
                    {
                        if (types[i] == address[0])
                        {
                            sb.Append(types[i]);
                            sb.Append("B");

                            if (address[1] == 'X')//Bit
                            {

                                if (address.IndexOf(".") > 1) //MX0.0
                                {
                                    string[] list = address.Split('.');
                                    baseAddress = ((int.Parse($"{list[2]}") >= 16) ? (int.Parse($"{list[2]}") / 16) : 0) * 2;
                                    sb.Append(baseAddress);
                                }
                                else
                                {
                                    sb.Append(int.Parse($"{address[2]}"));
                                }
                            }
                            else if (address[1] == 'B')//BitOnByte
                            {


                                if (address.IndexOf(".") > 0)
                                {
                                    string[] list = address.Split('.');
                                    for (int y = 0; y < list.Length; y++)
                                    {
                                        if (list[y][0] == 'I' || list[y][0] == 'Q' || list[y][0] == 'U') //IB0.0.0.1
                                        {
                                            baseAddress = ((int.Parse($"{list[3]}") >= 2) ? (int.Parse($"{list[3]}") / 2) : 0) * 2;
                                            sb.Append(baseAddress);
                                            break;
                                        }
                                        else
                                        {

                                            sb.Append(int.Parse($"{list[1]}")); //MB0.0
                                            break;
                                        }
                                    }


                                }
                                else
                                {
                                    sb.Append(int.Parse($"{address[2]}"));
                                }

                            }
                            else if (address[1] == 'W')
                            {
                                if (address.IndexOf(".") > 0)//BitOnWord
                                {
                                    string[] list = address.Split('.');
                                    for (int y = 0; y < list.Length; y++)
                                    {
                                        if (list[y][0] == 'I' || list[y][0] == 'Q' || list[y][0] == 'U')//IW0.0.0.1
                                        {
                                            baseAddress = ((int.Parse($"{list[3]}") >= 2) ? (int.Parse($"{list[3]}") / 2) : 0) * 2;
                                            sb.Append(baseAddress);
                                            break;
                                        }
                                        else
                                        {

                                            sb.Append(int.Parse($"{list[1]}") * 2);//MW0.0
                                            break;
                                        }
                                    }


                                }
                                else
                                {
                                    sb.Append(int.Parse($"{address[2]}") * 2);//MW0
                                }

                            }
                            else if (address[1] == 'D')
                            {
                                sb.Append(int.Parse($"{address[2]}") * 4);
                            }
                            else if (address[1] == 'L')
                            {
                                sb.Append(int.Parse($"{address[2]}") * 8);
                            }
                            else
                            {
                                sb.Append(int.Parse($"{address[1]}"));
                            }

                            exsist = true;
                            break;
                        }
                    }
                }
                else
                {
                    if (address.Length >= 3 || address.Length >= 5)
                    {
                        for (int i = 0; i < types.Length; i++)
                        {
                            if (types[i] == address[0])
                            {


                                if (address[1] == 'B')
                                {
                                    if (address.IndexOf(".") > 0)//BitOnByte
                                    {
                                        string text3 = address.Substring(0, 1);
                                        address.Substring(1, 1);
                                        string text4 = address.Remove(0, 2);

                                        switch (text3)
                                        {
                                            case "I":
                                            case "Q":
                                            case "U":
                                                {
                                                    string[] array4 = text4.Split(new char[1]
                                                    {
                '.'
                                                    }, 4);
                                                    fullAddress = text3 + "B" + array4[0] + "." + array4[1] + ".";
                                                    LsBaseNumber = int.Parse(array4[2]);
                                                    LsSlotNumber = int.Parse(array4[3]);
                                                    break;
                                                }
                                            default:
                                                {
                                                    string[] array3 = text4.Split(new char[1]
                                                    {
                '.'
                                                    }, 2);
                                                    fullAddress = text3 + "B";
                                                    LsBaseNumber = int.Parse(array3[0]);
                                                    LsSlotNumber = int.Parse(array3[1]);
                                                    break;
                                                }
                                        }
                                        fullAddress = $"{fullAddress}{(LsBaseNumber * 8 + LsSlotNumber) / 8}.{LsSlotNumber % 8}";
                                        sb.Append(fullAddress);
                                    }
                                    else
                                    {
                                        sb.Append(address);
                                    }

                                    exsist = true;
                                    break;
                                }
                                else if (address[1] == 'W')
                                {
                                    if (address.IndexOf(".") > 0)//BitOnWord
                                    {

                                        string text = address.Substring(0, 1);
                                        address.Substring(1, 1);
                                        string text2 = address.Remove(0, 2);


                                        switch (text)
                                        {
                                            case "I":
                                            case "Q":
                                            case "U":
                                                {
                                                    string[] array2 = text2.Split(new char[1]
                                                    {
                '.'
                                                    }, 4);
                                                    fullAddress = text + "B" + array2[0] + "." + array2[1] + ".";
                                                    LsBaseNumber = int.Parse(array2[2]);
                                                    LsSlotNumber = int.Parse(array2[3]);
                                                    break;
                                                }
                                            default:
                                                {
                                                    string[] array = text2.Split(new char[1]
                                                    {
                '.'
                                                    }, 2);
                                                    fullAddress = text + "B";
                                                    LsBaseNumber = int.Parse(array[0]);
                                                    LsSlotNumber = int.Parse(array[1]);
                                                    break;
                                                }
                                        }
                                        fullAddress = $"{fullAddress}{(LsBaseNumber * 16 + LsSlotNumber) / 8}.{LsSlotNumber % 8}";
                                    }
                                    else
                                    {
                                        sb.Append(fullAddress);
                                    }

                                    exsist = true;
                                    break;
                                }
                                else if (address[1] == 'D')
                                {
                                    sb.Append(address);
                                    exsist = true;
                                    break;
                                }
                                else if (address[1] == 'X')
                                {
                                    sb.Append(address);
                                    exsist = true;
                                    break;
                                }
                                else
                                {
                                    exsist = false;
                                    break;
                                }

                            }
                        }
                    }

                }
                if (!exsist) throw new Exception(StringResources.Language.NotSupportedDataType);
            }
            catch (Exception ex)
            {
                return new OperateResult<string>(ex.Message);
            }

            return OperateResult.CreateSuccessResult(sb.ToString());





        }

        /// <summary>
        /// Get DataType to Address
        /// </summary>
        /// <param name="address"></param>
        /// <returns></returns>
        public static OperateResult<string> GetDataTypeToAddress(string address)
        {
            string lSDataType = string.Empty; ;
            try
            {

                char[] types = new char[] { 'P', 'M', 'L', 'K', 'F', 'T', 'C', 'D', 'S', 'Q', 'I', 'R' };
                bool exsist = false;

                for (int i = 0; i < types.Length; i++)
                {
                    if (types[i] == address[0])
                    {

                        if (address[1] == 'W')
                        {
                            lSDataType = "Word";
                        }
                        else if (address[1] == 'D')
                        {
                            lSDataType = "DWord";
                        }
                        else if (address[1] == 'L')
                        {
                            lSDataType = "LWord";
                        }
                        else if (address[1] == 'B')
                        {
                            lSDataType = "Byte";
                        }
                        else if (address[1] == 'X')
                        {
                            lSDataType = "Bit";
                        }
                        else
                        {
                            exsist = false;
                            break;
                        }
                        exsist = true;
                        break;
                    }
                }

                if (!exsist) throw new Exception(StringResources.Language.NotSupportedDataType);
            }
            catch (Exception ex)
            {
                return new OperateResult<string>(ex.Message);
            }

            return OperateResult.CreateSuccessResult(lSDataType);


        }
        private static OperateResult<byte[]> BuildReadByteCommand(string address, ushort length)
        {
            var analysisResult = AnalysisAddress(address, true);
            if (!analysisResult.IsSuccess) return OperateResult.CreateFailedResult<byte[]>(analysisResult);

            byte[] command = new byte[12 + analysisResult.Content.Length];
            command[0] = 0x54;    // read
            command[1] = 0x00;
            command[2] = 0x14;    // continuous reading
            command[3] = 0x00;
            command[4] = 0x00;    // Reserved
            command[5] = 0x00;
            command[6] = 0x01;    // Block No         ?? i don't know what is the meaning
            command[7] = 0x00;
            command[8] = (byte)analysisResult.Content.Length;    //  Variable Length
            command[9] = 0x00;

            Encoding.ASCII.GetBytes(analysisResult.Content).CopyTo(command, 10);
            BitConverter.GetBytes(length).CopyTo(command, command.Length - 2);

            return OperateResult.CreateSuccessResult(command);
        }

        private static OperateResult<byte[]> BuildWriteByteCommand(string address, byte[] data)
        {
            var analysisResult = AnalysisAddress(address, false);
            if (!analysisResult.IsSuccess) return OperateResult.CreateFailedResult<byte[]>(analysisResult);
            var DataTypeResult = GetDataTypeToAddress(address);
            if (!DataTypeResult.IsSuccess) return OperateResult.CreateFailedResult<byte[]>(DataTypeResult);

            byte[] command = new byte[12 + analysisResult.Content.Length + data.Length];

            switch (DataTypeResult.Content)
            {
                case "Bit":
                    command[2] = 0x00; break;
                case "Byte":
                    command[2] = 0x01; break;
                case "Word":
                    command[2] = 0x02; break;
                case "DWord": command[2] = 0x03; break;
                case "LWord": command[2] = 0x04; break;
                case "Continuous": command[2] = 0x14; break;
                default: break;
            }
            command[0] = 0x58;    // write
            command[1] = 0x00;
            //command[2] = 0x14;    // continuous reading
            command[3] = 0x00;
            command[4] = 0x00;    // Reserved
            command[5] = 0x00;
            command[6] = 0x01;    // Block No         ?? i don't know what is the meaning
            command[7] = 0x00;
            command[8] = (byte)analysisResult.Content.Length;    //  Variable Length
            command[9] = 0x00;

            Encoding.ASCII.GetBytes(analysisResult.Content).CopyTo(command, 10);
            BitConverter.GetBytes(data.Length).CopyTo(command, command.Length - 2 - data.Length);
            data.CopyTo(command, command.Length - data.Length);

            return OperateResult.CreateSuccessResult(command);
        }

        /// <summary>
        /// Returns true data content, supports read and write returns
        /// </summary>
        /// <param name="response">response data</param>
        /// <returns>real data</returns>
        public OperateResult<byte[]> ExtractActualData(byte[] response)
        {
            if (response.Length < 20) return new OperateResult<byte[]>("Length is less than 20:" + SoftBasic.ByteToHexString(response));

            ushort plcInfo = BitConverter.ToUInt16(response, 10);
            BitArray array_plcInfo = new BitArray(BitConverter.GetBytes(plcInfo));

            switch (plcInfo % 32)
            {
                case 1: CpuType = "XGK/R-CPUH"; break;
                case 2: CpuType = "XGK-CPUS"; break;
                case 5: CpuType = "XGK/R-CPUH"; break;
            }

            CpuError = array_plcInfo[7];
            if (array_plcInfo[8]) LSCpuStatus = LSCpuStatus.RUN;
            if (array_plcInfo[9]) LSCpuStatus = LSCpuStatus.STOP;
            if (array_plcInfo[10]) LSCpuStatus = LSCpuStatus.ERROR;
            if (array_plcInfo[11]) LSCpuStatus = LSCpuStatus.DEBUG;

            if (response.Length < 28) return new OperateResult<byte[]>("Length is less than 28:" + SoftBasic.ByteToHexString(response));
            ushort error = BitConverter.ToUInt16(response, 26);
            if (error > 0) return new OperateResult<byte[]>(response[28], "Error:" + GetErrorDesciption(response[28]));

            if (response[20] == 0x59) return OperateResult.CreateSuccessResult(new byte[0]);  // write

            if (response[20] == 0x55)  // read
            {
                try
                {
                    ushort length = BitConverter.ToUInt16(response, 30);
                    byte[] content = new byte[length];
                    Array.Copy(response, 32, content, 0, length);
                    return OperateResult.CreateSuccessResult(content);
                }
                catch (Exception ex)
                {
                    return new OperateResult<byte[]>(ex.Message);
                }
            }

            return new OperateResult<byte[]>(StringResources.Language.NotSupportedFunction);
        }

        /// <summary>
        /// get the description of the error code meanning
        /// </summary>
        /// <param name="code">code value</param>
        /// <returns>string information</returns>
        public static string GetErrorDesciption(byte code)
        {
            switch (code)
            {
                case 0: return "Normal";
                case 1: return "Physical layer error (TX, RX unavailable)";
                case 3: return "There is no identifier of Function Block to receive in communication channel";
                case 4: return "Mismatch of data type";
                case 5: return "Reset is received from partner station";
                case 6: return "Communication instruction of partner station is not ready status";
                case 7: return "Device status of remote station is not desirable status";
                case 8: return "Access to some target is not available";
                case 9: return "Can’ t deal with communication instruction of partner station by too many reception";
                case 10: return "Time Out error";
                case 11: return "Structure error";
                case 12: return "Abort";
                case 13: return "Reject(local/remote)";
                case 14: return "Communication channel establishment error (Connect/Disconnect)";
                case 15: return "High speed communication and connection service error";
                case 33: return "Can’t find variable identifier";
                case 34: return "Address error";
                case 50: return "Response error";
                case 113: return "Object Access Unsupported";
                case 187: return "Unknown error code (communication code of other company) is received";
                default: return "Unknown error";
            }
        }

        #endregion

        #region Override

        /// <summary>
        /// Returns a string representing the current object
        /// </summary>
        /// <returns>字符串</returns>
        public override string ToString()
        {
            return $"XGBFastEnet[{IpAddress}:{Port}]";
        }

        #endregion
    }
}