FCCLite/HengshanPaymentTerminal/HengshanPayTermHandler.cs

using HengshanPaymentTerminal.MessageEntity.Incoming;
using HengshanPaymentTerminal.MessageEntity;
using HengshanPaymentTerminal.Support;
using HengshanPaymentTerminal;
using System;
using System.Collections.Concurrent;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Edge.Core.Processor.Dispatcher.Attributes;
using Edge.Core.IndustryStandardInterface.Pump;
using Edge.Core.IndustryStandardInterface.Pump.Fdc;
using Edge.Core.Processor;
using Edge.Core.Core.database;
using Edge.Core.Domain.FccStationInfo.Output;
using Edge.Core.Domain.FccNozzleInfo;
using Edge.Core.Domain.FccNozzleInfo.Output;
using System.Net.Sockets;
using Edge.Core.Domain.FccOrderInfo;
using Microsoft.EntityFrameworkCore;
using Microsoft.VisualStudio.TestPlatform.CommunicationUtilities;
using static Microsoft.AspNetCore.Hosting.Internal.HostingApplication;

namespace HengshanPaymentTerminal
{
    /// <summary>
    /// Handler that communicates directly with the Hengshan Payment Terminal for card handling and pump handling via serial port.
    /// </summary>
    [MetaPartsDescriptor(
        "lang-zh-cn:恒山IC卡终端（UI板） App lang-en-us:Hengshan IC card terminal (UI Board)",
        "lang-zh-cn:用于与UI板通讯控制加油机" +
        "lang-en-us:Used for terminal communication to control pumps",
        new[]
        {
            "lang-zh-cn:恒山IC卡终端lang-en-us:HengshanICTerminal"
        })]
    public class HengshanPayTermHandler : IEnumerable<IFdcPumpController>, IDeviceHandler<byte[], CommonMessage>
    {
        #region Fields

        private string pumpIds;
        private string pumpSubAddresses;
        private string pumpNozzles;
        private string pumpSiteNozzleNos;
        private string nozzleLogicIds;

        private IContext<byte[], CommonMessage> _context;
        private List<HengshanPumpHandler> pumpHandlers = new List<HengshanPumpHandler>();

        public Queue<CardMessageBase> queue = new Queue<CardMessageBase>();
        public Queue<CommonMessage> commonQueue = new Queue<CommonMessage>();
        private object syncObj = new object();

        private ConcurrentDictionary<int, PumpStateHolder> statusDict = new ConcurrentDictionary<int, PumpStateHolder>();

        public ConcurrentDictionary<int, PumpStateHolder> PumpStatusDict => statusDict;

        private Dictionary<int, int> pumpIdSubAddressDict;

        public Dictionary<int, List<int>> PumpNozzlesDict { get; private set; }

        public Dictionary<int, int> NozzleLogicIdDict { get; private set; }

        public Dictionary<int, List<int>> PumpSiteNozzleNoDict { get; private set; }

        public MysqlDbContext MysqlDbContext { get; private set; }

        public StationInfo stationInfo { get; set; }

        public List<DetailsNozzleInfoOutput> nozzleInfoList { get; private set; }

        public TcpClient? client { get; set; }
        #endregion

        #region Logger

        private static NLog.Logger logger = NLog.LogManager.LoadConfiguration("NLog.config").GetLogger("IPosPlusApp");

        #endregion

        #region Constructor

        //private static List<object> ResolveCtorMetaPartsConfigCompatibility(string incompatibleCtorParamsJsonStr)
        //{
        //    var jsonParams = JsonDocument.Parse(incompatibleCtorParamsJsonStr).RootElement.EnumerateArray().ToArray();

        //    //sample:   "UITemplateVersion":"1.0"
        //    string uiTemplateVersionRegex = @"(?<=""UITemplateVersion""\:\"").+?(?="")";
        //    var match = Regex.Match(jsonParams.First().GetRawText(), uiTemplateVersionRegex, RegexOptions.IgnoreCase | RegexOptions.Multiline);

        //    if (match.Success)
        //    {
        //        var curVersion = match.Value;
        //        if (curVersion == "1.0")
        //        {
        //            var existsAppConfigV1 = JsonSerializer.Deserialize(jsonParams.First().GetRawText(), typeof(HengshanPayTerminalHanlderGroupConfigV1));
        //        }
        //        else
        //        { 
        //        }
        //    }

        //    return null;
        //}

        [ParamsJsonSchemas("TermHandlerGroupCtorParamsJsonSchemas")]
        public HengshanPayTermHandler(HengshanPayTerminalHanlderGroupConfigV2 config)
            : this(config.PumpIds,
                  string.Join(";", config.PumpSubAddresses.Select(m => $"{m.PumpId}={m.SubAddress}")),
                  string.Join(";", config.PumpNozzleLogicIds.Select(m => $"{m.PumpId}={m.LogicIds}")),
                  string.Join(";", config.PumpSiteNozzleNos.Select(m => $"{m.PumpId}={m.SiteNozzleNos}")),
                  string.Join(";", config.NozzleLogicIds.Select(m => $"{m.NozzleNo}={m.LogicId}")))
        {

        }

        public HengshanPayTermHandler(
            string pumpIds,
            string pumpSubAddresses,
            string pumpNozzles,
            string pumpSiteNozzleNos,
            string nozzleLogicIds)
        {
            this.pumpIds = pumpIds;
            this.pumpSubAddresses = pumpSubAddresses;
            this.pumpNozzles = pumpNozzles;
            this.pumpSiteNozzleNos = pumpSiteNozzleNos;
            this.nozzleLogicIds = nozzleLogicIds;
            this.MysqlDbContext = new MysqlDbContext();

            GetInfo();
            AssociatedPumpIds = GetPumpIdList(pumpIds);
            pumpIdSubAddressDict = InitializePumpSubAddressMapping();
            PumpNozzlesDict = ParsePumpNozzlesList(pumpNozzles);
            PumpSiteNozzleNoDict = ParsePumpSiteNozzleNoList(pumpSiteNozzleNos);
            NozzleLogicIdDict = InitializeNozzleLogicIdMapping(nozzleLogicIds);

            InitializePumpHandlers();
        }

        #endregion

        public void OnFdcServerInit(Dictionary<string, object> parameters)
        {
            logger.Info("OnFdcServerInit called");

            if (parameters.ContainsKey("LastPriceChange"))
            {
                // nozzle logical id:rawPrice
                var lastPriceChanges = parameters["LastPriceChange"] as Dictionary<byte, int>;
                foreach (var priceChange in lastPriceChanges)
                {
                }
            }
        }

        #region Event handler

        public event EventHandler<TerminalMessageEventArgs> OnTerminalMessageReceived;

        public event EventHandler<TotalizerDataEventArgs> OnTotalizerReceived;

        public event EventHandler<FuelPriceChangeRequestEventArgs> OnFuelPriceChangeRequested;

        public event EventHandler<FuelPriceDownloadRequestedEventArgs> OnTerminalFuelPriceDownloadRequested;

        public event EventHandler<CheckCommandEventArgs> OnCheckCommandReceived;

        public event EventHandler<LockUnlockEventArgs> OnLockUnlockCompleted;

        #endregion

        #region Properties

        public List<int> AssociatedPumpIds { get; private set; }

        public IContext<byte[], CommonMessage> Context
        {
            get { return _context; }
        }

        public string PumpIdList => pumpIds;

        //public LockUnlockOperation LockUnlockOperationType { get; set; } = LockUnlockOperation.Undefined;

        #endregion

        #region Methods

        public int GetSubAddressForPump(int pumpId)
        {
            return pumpIdSubAddressDict.First(d => d.Key == pumpId).Value;
        }

        private List<int> GetPumpIdList(string pumpIds)
        {
            var pumpIdList = new List<int>();
            if (!string.IsNullOrEmpty(pumpIds) && pumpIds.Contains(',')) //multiple pumps per serial port, Hengshan TQC pump
            {
                var arr = pumpIds.Split(',');
                foreach (var item in arr)
                {
                    pumpIdList.Add(int.Parse(item));
                }
                return pumpIdList;
            }
            else if (!string.IsNullOrEmpty(pumpIds) && pumpIds.Length == 1 || pumpIds.Length == 2) //only 1 pump per serial port, Hengshan pump
            {
                return new List<int> { int.Parse(pumpIds) };
            }
            else
            {
                throw new ArgumentException("Pump id list not specified!");
            }
        }

        private Dictionary<int, int> InitializePumpSubAddressMapping()
        {
            var dict = new Dictionary<int, int>();
            if (!string.IsNullOrEmpty(pumpSubAddresses))
            {
                var sequence = pumpSubAddresses.Split(';')
                    .Select(s => s.Split('='))
                    .Select(a => new { PumpId = int.Parse(a[0]), SubAddress = int.Parse(a[1]) });

                foreach (var pair in sequence)
                {
                    if (!dict.ContainsKey(pair.PumpId))
                    {
                        dict.Add(pair.PumpId, pair.SubAddress);
                    }
                }

                return dict;
            }
            else
            {
                throw new ArgumentException("Pump id and sub address mapping does not exist");
            }
        }

        private Dictionary<int, List<int>> ParsePumpNozzlesList(string pumpNozzles)
        {
            Dictionary<int, List<int>> pumpNozzlesDict = new Dictionary<int, List<int>>();

            if (!string.IsNullOrEmpty(pumpNozzles) && pumpNozzles.Contains(';'))
            {
                var arr = pumpNozzles.Split(';');
                foreach (var subMapping in arr)
                {
                    var pair = new KeyValuePair<int, int>(int.Parse(subMapping.Split('=')[0]), int.Parse(subMapping.Split('=')[1]));
                    Console.WriteLine($"{pair.Key}, {pair.Value}");

                    if (!pumpNozzlesDict.ContainsKey(pair.Key))
                    {
                        pumpNozzlesDict.Add(pair.Key, new List<int> { pair.Value });
                    }
                    else
                    {
                        List<int> nozzlesForThisPump;
                        pumpNozzlesDict.TryGetValue(pair.Key, out nozzlesForThisPump);
                        if (nozzlesForThisPump != null && !nozzlesForThisPump.Contains(pair.Value))
                        {
                            nozzlesForThisPump.Add(pair.Value);
                        }
                    }
                }
            }
            else if (!string.IsNullOrEmpty(pumpNozzles) && pumpNozzles.Count(c => c == '=') == 1) // only one pump per serial port
            {
                try
                {
                    pumpNozzlesDict.Add(
                        int.Parse(pumpNozzles.Split('=')[0]),
                        new List<int> { int.Parse(pumpNozzles.Split('=')[1]) });
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex);
                }
            }
            else
            {
                throw new ArgumentException("Wrong mapping between pump and its associated nozzles!");
            }

            return pumpNozzlesDict;
        }

        static Dictionary<int, List<int>> ParsePumpSiteNozzleNoList(string pumpSiteNozzleNos)
        {
            Dictionary<int, List<int>> pumpSiteNozzleNoDict = new Dictionary<int, List<int>>();

            if (!string.IsNullOrEmpty(pumpSiteNozzleNos) && pumpSiteNozzleNos.Contains(';'))
            {
                var arr = pumpSiteNozzleNos.Split(';');
                foreach (var subMapping in arr)
                {
                    var pair = new KeyValuePair<int, List<int>>(
                        int.Parse(subMapping.Split('=')[0]), subMapping.Split('=')[1].Split(',').Select(a => int.Parse(a)).ToList());

                    Console.WriteLine($"{pair.Key}, {pair.Value}");

                    if (!pumpSiteNozzleNoDict.ContainsKey(pair.Key))
                    {
                        pumpSiteNozzleNoDict.Add(pair.Key, pair.Value);
                    }
                }
            }
            else if (!string.IsNullOrEmpty(pumpSiteNozzleNos) && pumpSiteNozzleNos.Count(c => c == '=') == 1)
            {

                try
                {
                    string[] strArr = pumpSiteNozzleNos.Split('=');
                    pumpSiteNozzleNoDict.Add(
                        int.Parse(strArr[0]), new List<int> { int.Parse(strArr[1]) });
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex);
                }
            }
            else
            {
                throw new ArgumentException("Wrong mapping between pump and its associated nozzles!");
            }

            return pumpSiteNozzleNoDict;
        }

        private Dictionary<int, int> InitializeNozzleLogicIdMapping(string nozzleLogicIds)
        {
            var dict = new Dictionary<int, int>();
            if (!string.IsNullOrEmpty(nozzleLogicIds))
            {
                var sequence = nozzleLogicIds.Split(';')
                    .Select(s => s.Split('='))
                    .Select(a => new { NozzleNo = int.Parse(a[0]), LogicId = int.Parse(a[1]) });

                foreach (var pair in sequence)
                {
                    if (!dict.ContainsKey(pair.NozzleNo))
                    {
                        Console.WriteLine($"nozzle, logic id: {pair.NozzleNo} - {pair.LogicId}");
                        dict.Add(pair.NozzleNo, pair.LogicId);
                    }
                }

                return dict;
            }
            else if (!string.IsNullOrEmpty(nozzleLogicIds) && nozzleLogicIds.Count(c => c == '=') == 1)
            {
                try
                {
                    string[] sequence = nozzleLogicIds.Split('=');
                    dict.Add(int.Parse(sequence[0]), int.Parse(sequence[1]));
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex);
                }
                return dict;
            }
            else
            {
                throw new ArgumentException("Pump id and sub address mapping does not exist");
            }
        }

        private void InitializePumpHandlers()
        {
            var pumpIdList = GetPumpIdList(pumpIds);

            foreach (var item in pumpIdList)
            {
                var nozzleList = GetNozzleListForPump(item);
                var siteNozzleNoList = PumpSiteNozzleNoDict[item];
                HengshanPumpHandler pumpHandler = new HengshanPumpHandler(this, $"Pump_{item}", item, nozzleList, siteNozzleNoList);
                pumpHandler.OnFuelPriceChangeRequested += PumpHandler_OnFuelPriceChangeRequested;
                pumpHandlers.Add(pumpHandler);
            }
        }

        private List<int> GetNozzleListForPump(int pumpId)
        {
            List<int> nozzles;
            PumpNozzlesDict.TryGetValue(pumpId, out nozzles);
            return nozzles;
        }

        private void PumpHandler_OnFuelPriceChangeRequested(object sender, FuelPriceChangeRequestEventArgs e)
        {
            InfoLog($"Change price, Pump {e.PumpId}, Nozzle {e.NozzleId}, Price {e.Price}");

            OnFuelPriceChangeRequested?.Invoke(sender, e);
        }

        IEnumerator<IFdcPumpController> IEnumerable<IFdcPumpController>.GetEnumerator()
        {
            return pumpHandlers.GetEnumerator();
        }

        #endregion

        #region IHandler implementation

        public void Init(IContext<byte[], CommonMessage> context)
        {
            CommIdentity = context.Processor.Communicator.Identity;
            _context = context;
        }

        public string CommIdentity { get; private set; }

        public async Task Process(IContext<byte[], CommonMessage> context)
        {
            
            switch(context.Incoming.Message.Handle)
            {
                //订单
                case 0x18:
                    //添加或修改数据库订单
                    OrderFromMachine message = (OrderFromMachine)context.Incoming.Message;
                    int row = UpLoadOrder(message);
                    logger.Info($"receive order from machine,database had ${row} count change");
                    break;
            }
            
            context.Outgoing.Write(context.Incoming.Message);
        }

        private void CheckStatus(CheckCmdRequest request)
        {
            if (!statusDict.ContainsKey(request.FuelingPoint.PumpNo))
            {
                var result = statusDict.TryAdd(request.FuelingPoint.PumpNo,
                    new PumpStateHolder
                    {
                        PumpNo = request.FuelingPoint.PumpNo,
                        NozzleNo = 1,
                        State = request,
                        OperationType = LockUnlockOperation.None
                    });

                logger.Info($"Adding FuelingPoint {request.FuelingPoint.PumpNo} to dict");

                if (!result)
                {
                    statusDict.TryAdd(request.FuelingPoint.PumpNo, null);
                }
            }
            else
            {
                PumpStateHolder stateHolder = null;
                statusDict.TryGetValue(request.FuelingPoint.PumpNo, out stateHolder);

                if (stateHolder != null)
                {
                    logger.Debug($"State holder, PumpNo: {stateHolder.PumpNo}, dispenser state: {stateHolder.State.DispenserState}, " +
                        $"operation: {stateHolder.OperationType}");
                }

                if (stateHolder != null && stateHolder.OperationType != LockUnlockOperation.None)
                {
                    logger.Debug($"PumpNo: {request.FuelingPoint.PumpNo}, Last Dispenser State: {stateHolder.State.DispenserState}, " +
                        $"Current Dispenser State: {request.DispenserState}");

                    if (stateHolder.State.DispenserState == 3 && request.DispenserState == 2)
                    {
                        //Pump is locked due to lock operation
                        if (stateHolder.OperationType != LockUnlockOperation.None)
                        {
                            logger.Info("Locking done!");
                            stateHolder.State = request; //Update the state
                            OnLockUnlockCompleted?.Invoke(this, new LockUnlockEventArgs(stateHolder.OperationType, true));
                        }
                    }
                    else if (stateHolder.State.DispenserState == 2 && request.DispenserState == 3)
                    {
                        //Pump is unlocked due to unlock operation
                        if (stateHolder.OperationType != LockUnlockOperation.None)
                        {
                            logger.Info($"Unlocking done!");
                            stateHolder.State = request; //Update the state
                            OnLockUnlockCompleted?.Invoke(this, new LockUnlockEventArgs(stateHolder.OperationType, true));
                        }
                    }
                }
                else if (stateHolder != null && stateHolder.OperationType == LockUnlockOperation.None)
                {
                    if (stateHolder.State.DispenserState != request.DispenserState)
                    {
                        logger.Warn($"Observed a pump state change, {stateHolder.State.DispenserState} -> {request.DispenserState}");
                        stateHolder.State = request; //Update the state.
                    }
                }
            }
        }

        public void Write(CommonMessage cardMessage)
        {
            _context.Outgoing.Write(cardMessage);
        }

        public async Task<CommonMessage> WriteAsync(CommonMessage request, Func<CommonMessage, CommonMessage, bool> responseCapture,
            int timeout)
        {
            var resp = await _context.Outgoing.WriteAsync(request, responseCapture, timeout);
            return resp;
        }

        #endregion

        #region IEnumerable<IFdcPumpController> implementation

        public IEnumerator<IFdcPumpController> GetEnumerator()
        {
            return pumpHandlers.GetEnumerator();
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return pumpHandlers.GetEnumerator();
        }

        #endregion

        public void PendMessage(CardMessageBase message)
        {
            lock (syncObj)
            {
                queue.Enqueue(message);
            }
        }

        public bool TrySendNextMessage()
        {
            lock (syncObj)
            {
                if (queue.Count > 0)
                {
                    DebugLog($"queue count: {queue.Count}");
                    var message = commonQueue.Dequeue();
                    Write(message);
                    return true;
                }
            }

            return false;
        }

        public void StoreLatestFrameSqNo(int pumpId, byte frameSqNo)
        {
            var pump = GetPump(pumpId);
            if (pump != null)
            {
                pump.FrameSqNo = frameSqNo;
            }
        }

        public void UpdatePumpState(int pumpId, int logicId, LogicalDeviceState state)
        {
            var currentPump = GetPump(pumpId);
            currentPump?.FirePumpStateChange(state, Convert.ToByte(logicId));
        }

        public void UpdateFuelingStatus(int pumpId, FdcTransaction fuelingTransaction)
        {
            var currentPump = GetPump(pumpId);
            currentPump?.FireFuelingStatusChange(fuelingTransaction);
        }

        private HengshanPumpHandler GetPump(int pumpId)
        {
            return pumpHandlers.FirstOrDefault(p => p.PumpId == pumpId);
        }

        public void SetRealPrice(int pumpId, int price)
        {
            var currentPump = GetPump(pumpId);
            var nozzle = currentPump?.Nozzles.FirstOrDefault();
            if (nozzle != null)
                nozzle.RealPriceOnPhysicalPump = price;
        }

        #region Log methods

        private void InfoLog(string info)
        {
            logger.Info("PayTermHdlr " + info);
        }

        private void DebugLog(string debugMsg)
        {
            logger.Debug("PayTermHdlr " + debugMsg);
        }

        #endregion

        #region 二维码加油机相关方法

        /// <summary>
        /// 获取站点信息
        /// </summary>
        private void GetInfo()
        {
            Edge.Core.Domain.FccStationInfo.FccStationInfo? fccStationInfo = MysqlDbContext.FccStationInfos.FirstOrDefault();
            if(fccStationInfo != null) stationInfo = new StationInfo(fccStationInfo);
            nozzleInfoList = MysqlDbContext.NozzleInfos.ToList().Select(n => new DetailsNozzleInfoOutput(n)).ToList();
        }

        /// <summary>
        /// 发送二维码信息给油机
        /// </summary>
        /// <param name="tcpClient"></param>
        public void SendQRCode()
        {
            string? smallProgram = stationInfo?.SmallProgram;
            if (smallProgram == null)
            {
                logger.Info($"can not get smallProgram link");
                return;
            }
            System.Net.EndPoint? remoteEndPoint = this.client?.Client.RemoteEndPoint;
            if (remoteEndPoint == null)
            {
                logger.Info($"can not get client");
                return;
            }
            string[] remoteAddr = remoteEndPoint.ToString().Split(":");
            string ip = remoteAddr[0];

            List<DetailsNozzleInfoOutput> nozzles = nozzleInfoList.FindAll(nozzle => nozzle.Ip == ip);
            foreach (var item in nozzles)
            {
                List<Byte> list = new List<Byte>();
                byte[] commandAndNozzle = { 0x63, (byte)item.NozzleNum };
                string qrCode = smallProgram + "/" + item.NozzleNum;
                byte[] qrCodeBytes = Encoding.ASCII.GetBytes(qrCode);
                list.AddRange(commandAndNozzle);
                list.Add((byte)qrCodeBytes.Length);
                list.AddRange(qrCodeBytes);
                byte[] sendBytes = content2data(list.ToArray());
                this.client?.Client.Send(sendBytes);
            }
        }

        /// <summary>
        /// 发送实付金额给油机
        /// </summary>
        /// <param name="orderInfo"></param>
        public void SendActuallyPaid(FccOrderInfo orderInfo) 
        {
            List<Byte> list = new List<Byte>();
            byte[] commandAndNozzle = { 0x19, (byte)orderInfo.NozzleNum };
            byte[] ttcBytes = NumberToByteArrayWithPadding(orderInfo.Ttc, 4);

            byte[] amountPayableBytes = FormatDecimal(orderInfo.AmountPayable);
            list.AddRange(commandAndNozzle);    //添加命令字和枪号
            list.AddRange(ttcBytes);            //添加流水号
            list.Add(0x21);                     //由fcc推送实付金额表示该订单是二维码小程序支付的
            list.AddRange(amountPayableBytes);  //添加实付金额
            //添加3位交易金额1，3位交易金额2，2位优惠规则代码，10位卡应用号，4位消息鉴别码
            list.AddRange(new byte[] { 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00 });
            byte[] sendBytes = content2data(list.ToArray());
            this.client?.Client.Send(sendBytes);
        }

        public void SetTcpClinet(TcpClient? tcpClient)
        {
            this.client = tcpClient;
        }

        /// <summary>
        /// 添加或修改订单
        /// </summary>
        /// <param name="order">接收到油机的订单信息</param>
        /// <returns></returns>
        public int UpLoadOrder(OrderFromMachine order)
        {
            FccOrderInfo orderByMessage = order.ToComponent();
            FccOrderInfo? fccOrderInfo = MysqlDbContext.fccOrderInfos.FirstOrDefault(fccOrder => 
                fccOrder.NozzleNum == order.nozzleNum && fccOrder.Ttc == order.ttc);
            if (fccOrderInfo == null)
            {
                logger.Info($"receive order from machine,find order from database is null");
                MysqlDbContext.fccOrderInfos.Add(orderByMessage);
            }
            else
            {
                logger.Info($"receive order from machine,padding data right now");
                order.PaddingAuthorizationOrderData(fccOrderInfo);
            }
            return MysqlDbContext.SaveChanges();
        }

        /// <summary>
        /// 传入有效数据，拼接为要发送给油机包
        /// </summary>
        /// <param name="content"></param>
        /// <returns></returns>
        public byte[] content2data(byte[] content)
        {
            List<byte> list = new List<byte>();
            //目标地址，源地址，帧号
            byte[] head = new byte[] { 0xFF, 0xE0, 0x01 };
            byte[] length = Int2BCD(content.Length);
            list.AddRange(head);
            list.AddRange(length);
            list.AddRange(content);
            byte[] crc = HengshanCRC16.ComputeChecksumToBytes(list.ToArray());
            list.AddRange(crc);
            List<byte> addFAList = addFA(list);
            addFAList.Insert(0, 0xFA);
            return addFAList.ToArray();
        }

        public int Bcd2Int(byte byte1, byte byte2)
        {
            // 提取第一个字节的高四位和低四位  
            int digit1 = (byte1 >> 4) & 0x0F; // 高四位  
            int digit2 = byte1 & 0x0F;        // 低四位  

            // 提取第二个字节的高四位和低四位  
            int digit3 = (byte2 >> 4) & 0x0F; // 高四位  
            int digit4 = byte2 & 0x0F;        // 低四位  

            // 组合成一个整数  
            int result = digit1 * 1000 + digit2 * 100 + digit3 * 10 + digit4;

            return result;
        }

        public byte[] Int2BCD(int number)
        {
            // 提取千位、百位、十位和个位  
            int thousands = number / 1000;
            int hundreds = (number / 100) % 10;
            int tens = (number / 10) % 10;
            int units = number % 10;

            // 将千位和百位组合成一个字节（千位在高四位，百位在低四位）  
            byte firstByte = (byte)((thousands * 16) + hundreds); // 乘以16相当于左移4位  

            // 将十位和个位组合成一个字节（十位在高四位，个位在低四位）  
            byte secondByte = (byte)((tens * 16) + units);

            // 返回结果数组  
            return new byte[] { firstByte, secondByte };
        }

        public List<Byte> addFA(List<Byte> list)
        {
            List<byte> result = new List<byte>();

            foreach (byte b in list)
            {
                if (b == 0xFA)
                {
                    result.Add(0xFA);
                    result.Add(0xFA);
                }
                else
                {
                    result.Add(b);
                }
            }

            return result;
        }

        /// <summary>
        /// 将数值转为byte[]
        /// </summary>
        /// <param name="value">数值</param>
        /// <param name="length">数组长度，不够高位补0</param>
        /// <returns></returns>
        /// <exception cref="ArgumentException"></exception>
        public static byte[] NumberToByteArrayWithPadding(int value, int length)
        {
            if (length < 0)
            {
                throw new ArgumentException("Length must be non-negative.");
            }

            // 创建一个指定长度的字节数组
            byte[] paddedBytes = new byte[length];

            // 确保是大端序
            for (int i = 0; i < length && i < 4; i++)
            {
                paddedBytes[length - 1 - i] = (byte)(value >> (i * 8));
            }

            return paddedBytes;
        }

        public static byte[] FormatDecimal(decimal value)
        {
            // 四舍五入到两位小数
            decimal roundedValue = Math.Round(value, 2, MidpointRounding.AwayFromZero);
            int valueInt = (int)(roundedValue * 100m);
            return NumberToByteArrayWithPadding(valueInt, 3); ;
        }

        // CRC16 constants  
        const ushort CRC_ORDER16 = 16;
        const ushort CRC_POLYNOM16 = 0x1021;
        const ushort CRC_CRCINIT16 = 0xFFFF;
        const ushort CRC_CRCXOR16 = 0x0000;
        const ushort CRC_MASK = 0xFFFF;
        const ushort CRC_HIGHEST_BIT = (ushort)(1 << (CRC_ORDER16 - 1));
        const ushort TGT_CRC_DEFAULT_INIT = 0xFFFF;
        public static ushort Crc16(byte[] buffer, ushort length)
        {
            ushort crc_rc = TGT_CRC_DEFAULT_INIT;

            for (int i = 0; i < length; i++)
            {
                byte c = buffer[i];
                for (ushort j = 0x80; j != 0; j >>= 1)
                {
                    ushort crc_bit = (ushort)((crc_rc & CRC_HIGHEST_BIT) != 0 ? 1 : 0);
                    crc_rc <<= 1;

                    if ((c & j) != 0)
                    {
                        crc_bit = (ushort)((crc_bit == 0) ? 1 : 0);
                    }

                    if (crc_bit != 0)
                    {
                        crc_rc ^= CRC_POLYNOM16;
                    }
                }
            }

            return (ushort)((crc_rc ^ CRC_CRCXOR16) & CRC_MASK);
        }
        #endregion
    }

    public class HengshanPayTerminalHanlderGroupConfigV1
    {
        public string PumpIds { get; set; }

        public List<PumpSubAddress> PumpSubAddresses { get; set; }
    }

    public class HengshanPayTerminalHanlderGroupConfigV2
    {
        public string PumpIds { get; set; }

        public List<PumpSubAddress> PumpSubAddresses { get; set; }

        public List<PumpNozzleLogicId> PumpNozzleLogicIds { get; set; }

        public List<PumpSiteNozzleNo> PumpSiteNozzleNos { get; set; }

        public List<NozzleLogicId> NozzleLogicIds { get; set; }
    }

    public class PumpSubAddress
    {
        public byte PumpId { get; set; }

        public byte SubAddress { get; set; }
    }

    public class PumpNozzleLogicId
    {
        public byte PumpId { get; set; }

        public string LogicIds { get; set; }
    }

    public class PumpSiteNozzleNo
    {
        public byte PumpId { get; set; }

        public string SiteNozzleNos { get; set; }
    }

    public class NozzleLogicId
    {
        public byte NozzleNo { get; set; }

        public byte LogicId { get; set; }
    }
}