using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Configuration;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading;
using Timer = System.Timers.Timer;
using System.Collections;
using Edge.Core.Processor;
using Edge.Core.IndustryStandardInterface.Pump;
using Wayne.FDCPOSLibrary;
using System.Xml;
using Edge.Core.Database.Models;
using System.Threading.Tasks;
using Edge.Core.Processor.Communicator;
using Edge.Core.Processor.Dispatcher.Attributes;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Abstractions;
using Stateless;
using Microsoft.Extensions.DependencyInjection;

namespace ZhongSheng_NonIC_Pump
{
    public class StatePumpHandler : IFdcPumpController//, IDeviceHandler<byte[], MessageTemplateBase>
    {
        private IServiceProvider services;
        private IContext<byte[], MessageTemplateBase> context;
        private ILogger logger = NullLogger.Instance;
        private PumpGroupHandler parent;
        private LogicalDeviceState currentState = LogicalDeviceState.FDC_OFFLINE;

        public event EventHandler<FdcPumpControllerOnStateChangeEventArg> OnStateChange;
        /// <summary>
        /// fired on fueling process is on going, the fuel amount should keep changing.
        /// </summary>
        public event EventHandler<FdcTransactionDoneEventArg> OnCurrentFuellingStatusChange;

        StateMachine<LogicalDeviceState, Trigger> stateless
            = new StateMachine<LogicalDeviceState, Trigger>(LogicalDeviceState.FDC_OFFLINE);

        protected List<LogicalNozzle> nozzles;

        public IEnumerable<LogicalNozzle> Nozzles => this.nozzles;
        protected enum Trigger
        {
            //AnyPumpMsgReceived,
            AnyPumpMsgHaveNotReceivedForWhile,
            NozzleLifted_And_开机,
            NozzleLifted_And_停机,
            NozzleReplaced_And_开机,
            NozzleReplaced_And_停机,
            NozzleFuelNumbersIsRunning,
            //PumpAuthorizedByFC,
        }
        public int AmountDecimalDigits => 2;

        public int VolumeDecimalDigits => 2;

        public int PriceDecimalDigits => 2;

        public int VolumeTotalizerDecimalDigits => 2;

        /// <summary>
        /// </summary>
        public int PumpId { get; private set; }

        /// <summary>
        /// will set it to 油机端的配置值,枪号为以整个加油站为基础的油枪顺序编号, 就是全站枪号
        /// </summary>
        public int PumpPhysicalId { get; private set; }

        public string Name => "ZhongSheng_NonIC_Pump";

        /// <summary>
        /// 每把枪就是一个Pump即一个加油点
        /// </summary>
        /// <param name="pumpId"></param>
        /// <param name="dispenserSideNozzleId">油机端的配置值,枪号为以整个加油站为基础的油枪顺序编号, 就是全站枪号？</param>
        public StatePumpHandler(PumpGroupHandler parent, byte pumpId,
            byte dispenserSideNozzleId, IServiceProvider services)
        {
            this.parent = parent;
            this.services = services;
            var loggerFactory = services.GetRequiredService<ILoggerFactory>();
            this.logger = loggerFactory.CreateLogger("PumpHandler");
            this.PumpId = pumpId;
            this.PumpPhysicalId = dispenserSideNozzleId;
            //每把枪就是一个Pump即一个加油点
            this.nozzles = new List<LogicalNozzle>() { new LogicalNozzle(pumpId, dispenserSideNozzleId, 1, null) };
        }

        internal void TriggerPumpOffline()
        {
            if (this.currentState != LogicalDeviceState.FDC_OFFLINE)
            {
                this.currentState = LogicalDeviceState.FDC_OFFLINE;
                this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_OFFLINE));
            }
        }

        public void Init(IContext<byte[], MessageTemplateBase> context)
        {
            this.context = context;
        }

        public async Task Process(IContext<byte[], MessageTemplateBase> context)
        {
            this.context = context;
            if (context.Incoming.Message is PumpInIdleResponse)
            {
                if (this.currentState != LogicalDeviceState.FDC_READY)
                {
                    logger.LogDebug("Pump: " + this.PumpId + ", Switched to FDC_READY from " + this.currentState + " by received a PumpInIdleResponse");
                    this.currentState = LogicalDeviceState.FDC_READY;
                    this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_READY));
                }
            }
            else if (context.Incoming.Message is PumpInOperationResponse pumpInOperation)
            {
                if (pumpInOperation.PumpStateBlocks?.Any(s => s.NozzleNumber == this.PumpPhysicalId) ?? false)
                {
                    var pumpStateBlock = pumpInOperation.PumpStateBlocks.First(s => s.NozzleNumber == this.PumpPhysicalId);
                    if (pumpStateBlock.NozzleLiftState == NozzleLiftStateEnum.未提)
                    {
                        if (this.currentState != LogicalDeviceState.FDC_READY)
                        {
                            logger.LogDebug("Pump: " + this.PumpId + ", Switched to FDC_READY from " + this.currentState + " by PumpState-> " + pumpStateBlock.ToString());
                            //if (this.currentState == LogicalDeviceState.FDC_OFFLINE)
                            //    logger.LogInformation("Pump: " + this.PumpId + ", Pump side 加油机状态信息配置: " + pumpStateBlock.ToString());
                            //if (this.currentState == LogicalDeviceState.FDC_FUELLING)
                            //    logger.LogDebug("Pump: " + this.PumpId + ", Pump side 加油机状态信息配置: " + pumpStateBlock.ToString());
                            this.currentState = LogicalDeviceState.FDC_READY;
                            this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_READY));
                        }
                    }
                    else if (pumpStateBlock.NozzleLiftState == NozzleLiftStateEnum.已提)
                    {
                        if (pumpStateBlock.AuthMode == PumpAuthModeEnum.自授权模式)
                        {
                            /*in this mode, pump will auth itself and directly go into Athorized state, and then fuelling state.
                             */
                            if (this.currentState != LogicalDeviceState.FDC_AUTHORISED)
                            {
                                //simulate the Calling state by request from vendor for a temp solution, this will let the FdcServer trigger a authorize calling, but later he said this is not necessary.
                                //logger.LogDebug("Pump: " + this.PumpId + ", Switched to simulated FDC_CALLING from " + this.currentState + " by PumpState-> " + pumpStateBlock.ToString());
                                //this.currentState = LogicalDeviceState.FDC_CALLING;
                                //this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_CALLING, this.nozzles.First()));

                                logger.LogDebug("Pump: " + this.PumpId + ", Switched to FDC_AUTHORISED from " + this.currentState + " by PumpState-> " + pumpStateBlock.ToString());
                                this.currentState = LogicalDeviceState.FDC_AUTHORISED;
                                this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_AUTHORISED, this.nozzles.First()));
                            }
                        }
                        else
                        {
                            if (pumpStateBlock.PumpAuthorizeState == PumpAuthorizeStateEnum.未授权
                                && this.currentState != LogicalDeviceState.FDC_CALLING)
                            {
                                logger.LogDebug("Pump: " + this.PumpId + ", Switched to FDC_CALLING from " + this.currentState + " by PumpState-> " + pumpStateBlock.ToString());
                                this.currentState = LogicalDeviceState.FDC_CALLING;
                                this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_CALLING, this.nozzles.First()));
                            }
                            else if (pumpStateBlock.PumpAuthorizeState == PumpAuthorizeStateEnum.授权成功
                               && this.currentState != LogicalDeviceState.FDC_AUTHORISED)
                            {
                                logger.LogDebug("Pump: " + this.PumpId + ", Switched to FDC_AUTHORISED from " + this.currentState + " by PumpState-> " + pumpStateBlock.ToString());
                                this.currentState = LogicalDeviceState.FDC_AUTHORISED;
                                this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_AUTHORISED, this.nozzles.First()));
                            }
                        }
                    }
                    else if (pumpStateBlock.NozzleLiftState == NozzleLiftStateEnum.第二条枪提起)
                    {
                        this.logger.LogCritical("根据油机方的技术人员说明，对于此项目，我们中控这边对接的油机，都会是单枪单显，或者是2枪2显，不会有单面双单价（2枪共一个加油点）的型号，但是为什么现在收到这样的数据？");
                        //if (this.currentState != LogicalDeviceState.FDC_CALLING)
                        //{
                        //    this.currentState = LogicalDeviceState.FDC_CALLING;
                        //    this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_CALLING, this.nozzles.First()));
                        //}
                    }
                }

                if (pumpInOperation.FuellingDataBlocks?.Any(s => s.NozzleNumber == this.PumpPhysicalId) ?? false)
                {
                    var fuellingDataBlock = pumpInOperation.FuellingDataBlocks.First(s => s.NozzleNumber == this.PumpPhysicalId);
                    if (this.currentState != LogicalDeviceState.FDC_FUELLING)
                    {
                        //sometimes the pump will not report authorized state and directly go into fuelling, so here add one from air for process completion.
                        if (this.currentState != LogicalDeviceState.FDC_AUTHORISED)
                        {
                            logger.LogDebug("Pump: " + this.PumpId + ", Switched to FDC_AUTHORISED from " + this.currentState + " by manual inserting");
                            this.currentState = LogicalDeviceState.FDC_AUTHORISED;
                            this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_AUTHORISED, this.nozzles.First()));
                        }

                        logger.LogDebug("Pump: " + this.PumpId + ", Switched to FDC_FUELLING from " + this.currentState + " by received a FuellingDataBlock-> " + fuellingDataBlock.ToString());
                        this.currentState = LogicalDeviceState.FDC_FUELLING;
                        this.OnStateChange?.Invoke(this, new FdcPumpControllerOnStateChangeEventArg(LogicalDeviceState.FDC_FUELLING, this.nozzles.First()));
                    }

                    if (this.logger.IsEnabled(LogLevel.Trace))
                        this.logger.LogTrace("Pump " + this.PumpId + ": Reporting Fuelling in progress: " + fuellingDataBlock.ToString());
                    this.nozzles.First().RealPriceOnPhysicalPump = fuellingDataBlock.Price;
                    this.OnCurrentFuellingStatusChange?.Invoke(this, new FdcTransactionDoneEventArg(new FdcTransaction()
                    {
                        Amount = fuellingDataBlock.Amount,
                        Volumn = fuellingDataBlock.Volume,
                        Finished = false,
                        Nozzle = this.nozzles.First(),
                        Price = fuellingDataBlock.Price,
                    }));
                }
            }
            else if (context.Incoming.Message is PumpNotifyTransactionDoneEvent trxDoneEvent
                && trxDoneEvent.交易枪号 == this.PumpPhysicalId)
            {
                logger.LogDebug("Pump " + this.PumpId + ": " + "Report a trx done, 交易金额: " + trxDoneEvent.交易金额 +
                    ", 油量总量: " + trxDoneEvent.油量总量 +
                    ", 交易单价: " + trxDoneEvent.交易单价);
                this.context.Outgoing.Write(new AckPumpTransactionRequest(trxDoneEvent.FrameSeqNo)
                {
                    SourceAddress = this.parent.pumpGroupConfig.FccCommAddress,
                    TargetAddress = this.parent.pumpGroupConfig.DispenserCommBoardAddress,
                });
                // at least within 62 years, exception will not throw here
                int newTrxSeqNumber = (int)(DateTime.Now.Subtract(new DateTime(2020, 1, 1)).TotalSeconds);
                this.OnCurrentFuellingStatusChange?.Invoke(this, new FdcTransactionDoneEventArg(new FdcTransaction()
                {
                    Amount = trxDoneEvent.交易金额,
                    Volumn = trxDoneEvent.交易油量,
                    AmountTotalizer = trxDoneEvent.金额总量,
                    VolumeTotalizer = trxDoneEvent.油量总量,
                    Finished = true,
                    Nozzle = this.nozzles.First(),
                    Price = trxDoneEvent.交易单价,
                    SequenceNumberGeneratedOnPhysicalPump = newTrxSeqNumber,
                }));
            }
        }

        public virtual async Task<LogicalDeviceState> QueryStatusAsync()
        {
            return this.currentState;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <returns>MoneyTotalizer:VolumnTotalizer</returns>
        public async Task<Tuple<int, int>> QueryTotalizerAsync(byte logicalNozzleId)
        {
            var result = new System.Tuple<int, int>(-1, -1);
            logger.LogDebug("Pump: " + this.PumpId + ", " + "Start QueryTotalizer pump with logical nozzle: " + logicalNozzleId);
            var nozzlePhysicalId = this.nozzles.FirstOrDefault(n => n.LogicalId == logicalNozzleId)?.PhysicalId;
            if (nozzlePhysicalId == null)
            {
                logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " does not exists, totalizer will return -1, -1");
                return new System.Tuple<int, int>(-1, -1);
            }

            var frameSeqNo = this.parent.GenerateNewFrameNo();
            var response = await this.context.Outgoing.WriteAsync(
                new ReadPumpAccumulatorRequest()
                {
                    SourceAddress = this.parent.pumpGroupConfig.FccCommAddress,
                    TargetAddress = this.parent.pumpGroupConfig.DispenserCommBoardAddress,
                    FrameSeqNo = frameSeqNo
                },
                 (request, testResponse) =>
                    testResponse is ReadPumpAccumulatorResponse r
                        && (r.NozzleAndAccumulators?.Exists(d => d.枪号 == this.PumpPhysicalId) ?? false),
                    3000) as ReadPumpAccumulatorResponse;
            if (response != null)
            {
                logger.LogDebug("Pump: " + this.PumpId + ", " + "   Queried Totalizer for logical nozzle: " + logicalNozzleId +
                    ", response detail-> 油量累计: " + (response.NozzleAndAccumulators?.FirstOrDefault(n => n.枪号 == this.PumpPhysicalId)?.油量累计 ?? -1) +
                    ", 金额累计: " + (response.NozzleAndAccumulators?.FirstOrDefault(n => n.枪号 == this.PumpPhysicalId)?.金额累计 ?? -1));
                var t = response.NozzleAndAccumulators.First(d => d.枪号 == this.PumpPhysicalId);
                result = new System.Tuple<int, int>((int)t.金额累计, t.油量累计);
            }
            else
            {
                logger.LogError("Pump: " + this.PumpId + ", " + "QueryTotalizer timed out");
            }

            return result;
        }


        public virtual async Task<bool> ChangeFuelPriceAsync(int newPriceWithoutDecimalPoint, byte logicalNozzleId)
        {
            logger.LogDebug("Pump: " + this.PumpId + ", " + "start ChangeFuelPriceAsync pump with nozzle: " + logicalNozzleId);
            var nozzlePhysicalId = this.nozzles.FirstOrDefault(n => n.LogicalId == logicalNozzleId)?.PhysicalId;
            if (nozzlePhysicalId == null)
            {
                logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " does not exists, ChangeFuelPriceAsync failed");
                return false;
            }

            var frameSeqNo = this.parent.GenerateNewFrameNo();
            var response = await this.context.Outgoing.WriteAsync(
                new ChangePumpPriceRequest((byte)this.PumpPhysicalId, newPriceWithoutDecimalPoint)
                {
                    SourceAddress = this.parent.pumpGroupConfig.FccCommAddress,
                    TargetAddress = this.parent.pumpGroupConfig.DispenserCommBoardAddress,
                    FrameSeqNo = frameSeqNo
                },
                 (request, testResponse) =>
                     testResponse is AckChangePumpPriceResponse r && r.FrameSeqNo == frameSeqNo, 3000) as AckChangePumpPriceResponse;
            if (response != null)
            {
                if (response.参数 == 0x00)
                {
                    logger.LogDebug("Pump: " + this.PumpId + ", " + "       ChangeFuelPrice is Acked.");
                    return true;
                }
                else
                {
                    logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " change price response received with an error code: " + response.参数 + ", ChangeFuelPriceAsync failed");
                    return false;
                }
            }

            return false;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="logicalNozzleId">useless for this type of pump, it always one pump one nozzle</param>
        /// <returns></returns>
        public virtual async Task<bool> AuthorizeAsync(byte logicalNozzleId)
        {
            logger.LogDebug("Pump: " + this.PumpId + ", " + "start AuthorizeAsync pump with nozzle: " + logicalNozzleId);
            var nozzlePhysicalId = this.nozzles.FirstOrDefault(n => n.LogicalId == logicalNozzleId)?.PhysicalId;
            if (nozzlePhysicalId == null)
            {
                logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " does not exists, AuthorizeAsync failed");
                return false;
            }

            var frameSeqNo = this.parent.GenerateNewFrameNo();
            var response = await this.context.Outgoing.WriteAsync(
                new StartPumpRequest((byte)this.PumpPhysicalId, StartPumpRequest.PresetType.随意加油, 987699)
                {
                    SourceAddress = this.parent.pumpGroupConfig.FccCommAddress,
                    TargetAddress = this.parent.pumpGroupConfig.DispenserCommBoardAddress,
                    FrameSeqNo = frameSeqNo
                },
                 (request, testResponse) =>
                     testResponse is AckStartPumpResponse r, 3000) as AckStartPumpResponse;
            if (response != null)
            {
                if (response.参数 == 0x00)
                    return true;
                else
                {
                    logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " auth response received with an error code: " + response.参数 + ", AuthorizeAsync failed");
                    return false;
                }
            }

            return false;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="moneyAmount"></param>
        /// <param name="logicalNozzleId">useless for this type of pump, it always one pump one nozzle</param>
        /// <returns></returns>
        public virtual async Task<bool> AuthorizeWithAmountAsync(int moneyAmountWithoutDecimalPoint, byte logicalNozzleId)
        {
            logger.LogDebug("Pump: " + this.PumpId + ", " + "start AuthorizeWithAmountAsync pump with amount: " + moneyAmountWithoutDecimalPoint + ", nozzle: " + logicalNozzleId);
            var nozzlePhysicalId = this.nozzles.FirstOrDefault(n => n.LogicalId == logicalNozzleId)?.PhysicalId;
            if (nozzlePhysicalId == null)
            {
                logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " does not exists, AuthorizeWithAmountAsync failed");
                return false;
            }

            var frameSeqNo = this.parent.GenerateNewFrameNo();
            var response = await this.context.Outgoing.WriteAsync(
                new StartPumpRequest((byte)this.PumpPhysicalId, StartPumpRequest.PresetType.定金额加油, moneyAmountWithoutDecimalPoint)
                {
                    SourceAddress = this.parent.pumpGroupConfig.FccCommAddress,
                    TargetAddress = this.parent.pumpGroupConfig.DispenserCommBoardAddress,
                    FrameSeqNo = frameSeqNo
                },
                 (request, testResponse) =>
                     testResponse is AckStartPumpResponse r, 3000) as AckStartPumpResponse;
            if (response != null)
            {
                if (response.参数 == 0x00)
                    return true;
                else
                {
                    logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " auth response received with an error code: " + response.参数 + ", AuthorizeAsync failed");
                    return false;
                }
            }

            return false;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="volumnWithoutDecimalPoint"></param>
        /// <param name="logicalNozzleId">useless for this type of pump, it always one pump one nozzle</param>
        /// <returns></returns>
        public virtual async Task<bool> AuthorizeWithVolumeAsync(int volumnWithoutDecimalPoint, byte logicalNozzleId)
        {
            logger.LogDebug("Pump: " + this.PumpId + ", " + "start AuthorizeWithVolumeAsync pump with volume: " + volumnWithoutDecimalPoint + ", nozzle: " + logicalNozzleId);
            var nozzlePhysicalId = this.nozzles.FirstOrDefault(n => n.LogicalId == logicalNozzleId)?.PhysicalId;
            if (nozzlePhysicalId == null)
            {
                logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " does not exists, AuthorizeWithVolumeAsync failed");
                return false;
            }

            var frameSeqNo = this.parent.GenerateNewFrameNo();
            var response = await this.context.Outgoing.WriteAsync(
                new StartPumpRequest((byte)this.PumpPhysicalId, StartPumpRequest.PresetType.定油量体积加油, volumnWithoutDecimalPoint)
                {
                    SourceAddress = this.parent.pumpGroupConfig.FccCommAddress,
                    TargetAddress = this.parent.pumpGroupConfig.DispenserCommBoardAddress,
                    FrameSeqNo = frameSeqNo
                },
                 (request, testResponse) =>
                     testResponse is AckStartPumpResponse r, 3000) as AckStartPumpResponse;
            if (response != null)
            {
                if (response.参数 == 0x00)
                    return true;
                else
                {
                    logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " auth response received with an error code: " + response.参数 + ", AuthorizeAsync failed");
                    return false;
                }
            }

            return false;
        }

        public virtual async Task<bool> FuelingRoundUpByAmountAsync(int amount)
        {
            throw new NotImplementedException();
        }

        #region not implemented

        public async Task<bool> UnAuthorizeAsync(byte logicalNozzleId)
        {
            logger.LogDebug("Pump: " + this.PumpId + ", " + "start UnAuthorizeAsync pump with nozzle: " + logicalNozzleId);
            var nozzlePhysicalId = this.nozzles.FirstOrDefault(n => n.LogicalId == logicalNozzleId)?.PhysicalId;
            if (nozzlePhysicalId == null)
            {
                logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " does not exists, UnAuthorizeAsync failed");
                return false;
            }

            var frameSeqNo = this.parent.GenerateNewFrameNo();
            var response = await this.context.Outgoing.WriteAsync(
                new StopPumpRequest((byte)this.PumpPhysicalId)
                {
                    SourceAddress = this.parent.pumpGroupConfig.FccCommAddress,
                    TargetAddress = this.parent.pumpGroupConfig.DispenserCommBoardAddress,
                    FrameSeqNo = frameSeqNo
                },
                 (request, testResponse) =>
                     testResponse is AckStopPumpResponse r, 3000) as AckStopPumpResponse;
            if (response != null)
            {
                if (response.参数 == 0x00)
                    return true;
                else
                {
                    logger.LogDebug("Pump: " + this.PumpId + ", " + "       Nozzle with logicalId: " + logicalNozzleId + " auth response received with an error code: " + response.参数 + ", UnAuthorizeAsync failed");
                    return false;
                }
            }

            return false;
        }

        public async Task<bool> SuspendFuellingAsync()
        {
            throw new NotImplementedException();
        }

        public async Task<bool> ResumeFuellingAsync()
        {
            throw new NotImplementedException();
        }

        public async Task<bool> FuelingRoundUpByVolumeAsync(int volume)
        { throw new NotImplementedException(); }

        #endregion

        /// <summary>
        /// </summary>
        protected Dictionary<byte, FuelSaleTransaction> logicalNozzleIdToLastFuelSaleTrxMapping = new Dictionary<byte, FuelSaleTransaction>();
        public void OnFdcServerInit(Dictionary<string, object> parameters)
        {
            if (parameters.ContainsKey("LastPriceChange"))
            {
            }

            /* Load Last sale(from db) for void the case of FC accidently disconnect from Pump in fueling,
             and may cause a fueling trx gone from FC control */
            if (parameters.ContainsKey("LastFuelSaleTrx"))
            {
                // nozzle logical id:lastSale
                //var lastFuelSaleTrxes = parameters["LastFuelSaleTrx"] as Dictionary<byte, FuelSaleTransaction>;
                //foreach (var lastFuelSaleTrx in lastFuelSaleTrxes)
                //{
                //    logger.Info("Pump: " + this.pumpId + ", OnFdcServerInit, load last fuel sale " +
                //        "on logical nozzle: " + lastFuelSaleTrx.Key + " with value: " + lastFuelSaleTrx.Value);
                //    this.logicalNozzleIdToLastFuelSaleTrxMapping.Remove(lastFuelSaleTrx.Key);
                //    this.logicalNozzleIdToLastFuelSaleTrxMapping.Add(lastFuelSaleTrx.Key, lastFuelSaleTrx.Value);
                //}
            }
        }

        public async Task<bool> LockNozzleAsync(byte logicalNozzleId)
        {
            return false;
        }

        public async Task<bool> UnlockNozzleAsync(byte logicalNozzleId)
        {
            return false;
        }
    }
}