using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Edge.Core.Processor;
using Edge.Core.IndustryStandardInterface.Pump;
using System.Threading;
using Wayne.FDCPOSLibrary;
using Mocks;
using LanTian_Pump_664_Or_886.MessageEntity;
using LanTian_Pump_664_Or_886;
using LanTian_Pump_664_Or_886.MessageEntity.Outgoing;
using System.Threading.Tasks;
using LanTian_Pump_664_Or_886.MessageEntity.Incoming;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Extensions.DependencyInjection;
using static LanTian_Pump_664_Or_886.PumpGroupParameter;

namespace LanTian_Pump_664_Or_886_Test
{
    [TestClass]
    public class FdcPumpControllerUnitTest
    {
        private HalfDuplexActivePollingDeviceProcessor<byte[], MessageBase> processor;
        private ComPortCommunicatorMock<MessageBase> mockCommunicator;
        private IFdcPumpController fdcPumpController;

        [TestInitialize()]
        public void InitProcessor()
        {
            var services = new ServiceCollection();
            services.AddLogging();
            this.mockCommunicator = new ComPortCommunicatorMock<MessageBase>();
            mockCommunicator.OnRawDataWriting += (s, a) => { };
            this.processor = new HalfDuplexActivePollingDeviceProcessor<byte[], MessageBase>(
                new PumpGroupHandler(new PumpGroupParameter()
                {
                    PumpParameters = new List<PumpParameter>()
                    {
                        new PumpParameter()
                        {
                            PumpModel = PumpModelEnum.Model_664,
                            PumpAuthorizeMode = PumpAuthorizeModeEnum.FC_Authorize,
                            PumpId = 1,
                            Address = 1,
                         }
                     }
                }, services.BuildServiceProvider()),
                mockCommunicator, 100, null);
            this.fdcPumpController = (processor.Context.Handler as IEnumerable<IFdcPumpController>).First();
        }

        [TestMethod]
        public async Task Should_Send_Polling_Pump_Message_Test()
        {
            int pollingMessageSendTimes = 0;
            this.processor.Context.Outgoing.OnWriting += (s, a) =>
            {
                if (a.Message is ReadPumpStateRequest)
                    pollingMessageSendTimes++;
            };
            await this.processor.Start();
            await Task.Delay(1000);
            Assert.AreEqual(true, pollingMessageSendTimes >= 1, "polling message should send more than 1 times");
        }

        [TestMethod]
        public async Task FDC_OFFLINE_State_Test()
        {
            int onRawDataWriting = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                onStateChangeEventArgs.Add(a);
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
            };
            Assert.AreEqual(LogicalDeviceState.FDC_OFFLINE, fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_OFFLINE, but now is: " + fdcPumpController.QueryStatusAsync().Result);
            Assert.AreEqual(0, onRawDataWriting);
            await this.processor.Start();
            Assert.AreEqual(LogicalDeviceState.FDC_OFFLINE, this.fdcPumpController.QueryStatusAsync().Result,
                "status should be: FDC_OFFLINE, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(500);
            Assert.AreEqual(true, onRawDataWriting > 0);
            Assert.AreEqual(0, onStateChangeEventArgs.Count);
            Assert.AreEqual(LogicalDeviceState.FDC_OFFLINE, this.fdcPumpController.QueryStatusAsync().Result,
                "status should be: FDC_OFFLINE, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }

        [TestMethod]
        public async Task FDC_READY_State_Test()
        {
            int onRawDataWriting = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                onStateChangeEventArgs.Add(a);
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
                var readPumpStateResponse = new ReadPumpStateResponse
                {
                    NozzleState = ReadPumpStateResponse.NozzleStateEnum.挂枪,
                    StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                    ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                };
                this.mockCommunicator.FireOnDataReceived(readPumpStateResponse);
            };
            Assert.AreEqual(LogicalDeviceState.FDC_OFFLINE, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_OFFLINE, but now is: " + fdcPumpController.QueryStatusAsync().Result);
            Assert.AreEqual(0, onRawDataWriting);
            await processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(500);
            Assert.AreEqual(true, onRawDataWriting > 0);
            Assert.AreEqual(1, onStateChangeEventArgs.Count);
            Assert.AreEqual(LogicalDeviceState.FDC_READY, fdcPumpController.QueryStatusAsync().Result,
                "status should be: FDC_READY, but now is: " + fdcPumpController.QueryStatusAsync().Result);
        }

        [TestMethod]
        public async Task CallingState_Test()
        {
            int onRawDataWriting = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                onStateChangeEventArgs.Add(a);
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
                var readPumpStateResponse = new ReadPumpStateResponse
                {
                    NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                    StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                    ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                };
                this.mockCommunicator.FireOnDataReceived(readPumpStateResponse);
            };
            await this.processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(500);

            Assert.AreEqual(1, onStateChangeEventArgs.Count, "OnStateChange should be called 1 times: FdcCalling");
            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, onStateChangeEventArgs[0].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_CALLING, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }

        [TestMethod]
        public async Task CallingState_Test2()
        {
            int onRawDataWriting = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                onStateChangeEventArgs.Add(a);
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
                if (onRawDataWriting >= 2) return;
                var readPumpStateResponse_NozzleLifted = new ReadPumpStateResponse
                {
                    NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                    StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                    ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                };
                this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_NozzleLifted);
                Assert.AreEqual(LogicalDeviceState.FDC_CALLING, this.fdcPumpController.QueryStatusAsync().Result,
                    "status should change to: FDC_CALLING, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
                var readPumpStateResponse_NozzlePlaceBack = new ReadPumpStateResponse
                {
                    NozzleState = ReadPumpStateResponse.NozzleStateEnum.挂枪,
                    StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                    ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                };
                this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_NozzlePlaceBack);
                Assert.AreEqual(LogicalDeviceState.FDC_READY, this.fdcPumpController.QueryStatusAsync().Result,
                    "status should change to: FDC_READY, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
            };
            await this.processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(500);

            Assert.AreEqual(2, onStateChangeEventArgs.Count, "OnStateChange should be called 3 times: FdcCalling, FdcReady");
            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, onStateChangeEventArgs[0].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_READY, onStateChangeEventArgs[1].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_READY, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_CALLING, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }

        [TestMethod]
        public async Task AuthorizedState_Test()
        {
            int onRawDataWriting = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                onStateChangeEventArgs.Add(a);
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
                if (onRawDataWriting >= 2) return;
                var readPumpStateResponse_NozzleLifted = new ReadPumpStateResponse
                {
                    NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                    StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                    ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                };
                this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_NozzleLifted);
                Assert.AreEqual(LogicalDeviceState.FDC_CALLING, this.fdcPumpController.QueryStatusAsync().Result,
                    "status should change to: FDC_CALLING, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
                var readPumpStateResponse_NozzlePlaceBack = new ReadPumpStateResponse
                {
                    NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                    StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.开机,
                    ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                };
                this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_NozzlePlaceBack);
                Assert.AreEqual(LogicalDeviceState.FDC_AUTHORISED, this.fdcPumpController.QueryStatusAsync().Result,
                    "status should change to: FDC_AUTHORISED, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
            };
            await this.processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(500);

            Assert.AreEqual(2, onStateChangeEventArgs.Count, "OnStateChange should be called 3 times: FdcCalling, FDC_AUTHORISED");
            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, onStateChangeEventArgs[0].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_AUTHORISED, onStateChangeEventArgs[1].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_AUTHORISED, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_AUTHORISED, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }

        public TestContext TestContext { get; set; }

        [TestMethod]
        public async Task FuelingState_Test()
        {
            int onRawDataWriting = 0;
            int fuelingStatusReportingTimes = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            var onCurrentFuellingStatusChangeEventArgs = new List<FdcTransactionDoneEventArg>();

            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                this.TestContext.WriteLine("Received a OnStateChange: " + a.NewPumpState);
                onStateChangeEventArgs.Add(a);
            };
            this.fdcPumpController.OnCurrentFuellingStatusChange += (s, a) =>
            {
                this.TestContext.WriteLine("Received a OnCurrentFuellingStatusChange, amt: " + a.Transaction.Amount + ", vol: " + a.Transaction.Volumn);
                onCurrentFuellingStatusChangeEventArgs.Add(a);
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
                if (onRawDataWriting == 1)
                {
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    var readPumpStateResponse_NozzleLifted = new ReadPumpStateResponse
                    {
                        NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                        StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                        ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                    };
                    this.TestContext.WriteLine("Fire NozzleLifted");
                    this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_NozzleLifted);
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    var readPumpStateResponse_Nozzle开机 = new ReadPumpStateResponse
                    {
                        NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                        StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.开机,
                        ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                    };
                    this.TestContext.WriteLine("Fire Nozzle开机");
                    this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_Nozzle开机);
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                }
                else if (b.Message is ReadFuelDataRequest fuelDataRequest)
                {
                    var readFuelDataResponse = new ReadFuelDataResponse();
                    readFuelDataResponse.SetAmountAndVolume(100 + onRawDataWriting, 20 + onRawDataWriting);
                    this.TestContext.WriteLine("Fire FuelDataResponse");
                    this.mockCommunicator.FireOnDataReceived(readFuelDataResponse);
                    fuelingStatusReportingTimes++;
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                }
            };
            await this.processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(1000);

            Assert.AreEqual(3, onStateChangeEventArgs.Count, "OnStateChange should be called 3 times:  FdcCalling, FDC_AUTHORISED, FDC_FUELLING");
            Assert.AreEqual(fuelingStatusReportingTimes, onCurrentFuellingStatusChangeEventArgs.Count, "onCurrentFuellingStatusChangeEventArgs should have many");

            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, onStateChangeEventArgs[0].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_AUTHORISED, onStateChangeEventArgs[1].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_FUELLING, onStateChangeEventArgs[2].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_FUELLING, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_FUELLING, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }

        [TestMethod]
        public async Task FuelingState_Test1()
        {
            /* use FdcPumpController.AuthorizeAsync to auth pump rather than full simulation*/
            int onRawDataWriting = 0;
            int fuelingStatusReportingTimes = 0;
            int authorizingCalledTimes = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            var onCurrentFuellingStatusChangeEventArgs = new List<FdcTransactionDoneEventArg>();

            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                this.TestContext.WriteLine("Received a OnStateChange: " + a.NewPumpState);
                onStateChangeEventArgs.Add(a);
            };
            this.fdcPumpController.OnCurrentFuellingStatusChange += (s, a) =>
            {
                this.TestContext.WriteLine("Received a OnCurrentFuellingStatusChange, amt: " + a.Transaction.Amount + ", vol: " + a.Transaction.Volumn);
                onCurrentFuellingStatusChangeEventArgs.Add(a);
            };
            // default is for simulate calling
            var readPumpStateResponse = new ReadPumpStateResponse
            {
                NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                ControlState = ReadPumpStateResponse.ControlStateEnum.受控
            };
            this.mockCommunicator.OnRawDataWriting += async (a, b) =>
            {
                onRawDataWriting++;
                if (b.Message is ReadPumpStateRequest readPumpStateRequest)
                {
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    this.TestContext.WriteLine("Fire Nozzle state: " + readPumpStateResponse.StartOrStopState);
                    this.mockCommunicator.FireOnDataReceived(readPumpStateResponse);
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    if (authorizingCalledTimes == 0)
                    {
                        this.TestContext.WriteLine("AuthorizeAsync...");
                        var authResult = await this.fdcPumpController.AuthorizeWithAmountAsync(1000, 1);
                        this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    }
                }
                else if (b.Message is PresetAmountRequest presetAmountRequest)
                {
                    this.mockCommunicator.FireOnDataReceived(new PresetAmountResponse());
                }
                else if (b.Message is OpenRequest openRequest)
                {
                    authorizingCalledTimes++;
                    // to authorized state.
                    readPumpStateResponse = new ReadPumpStateResponse
                    {
                        NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                        StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.开机,
                        ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                    };
                }
                else if (b.Message is ReadFuelDataRequest fuelDataRequest)
                {
                    var readFuelDataResponse = new ReadFuelDataResponse();
                    readFuelDataResponse.SetAmountAndVolume(100 + onRawDataWriting, 20 + onRawDataWriting);
                    this.TestContext.WriteLine("Fire FuelDataResponse");
                    this.mockCommunicator.FireOnDataReceived(readFuelDataResponse);
                    fuelingStatusReportingTimes++;
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                }
            };
            await this.processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(1000);

            Assert.AreEqual(3, onStateChangeEventArgs.Count, "OnStateChange should be called 3 times:  FdcCalling, FDC_AUTHORISED, FDC_FUELLING");
            Assert.AreEqual(1, authorizingCalledTimes);
            Assert.AreEqual(fuelingStatusReportingTimes, onCurrentFuellingStatusChangeEventArgs.Count, "onCurrentFuellingStatusChangeEventArgs should have many");

            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, onStateChangeEventArgs[0].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_AUTHORISED, onStateChangeEventArgs[1].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_FUELLING, onStateChangeEventArgs[2].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_FUELLING, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_FUELLING, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }

        [TestMethod]
        public async Task FuelTrxDone_Test()
        {
            int onRawDataWriting = 0;
            int fuelingStatusReportingTimes = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            var onCurrentFuellingStatusChangeEventArgs = new List<FdcTransactionDoneEventArg>();
            this.fdcPumpController.OnStateChange += (s, a) =>
            {
                this.TestContext.WriteLine("Received a OnStateChange: " + a.NewPumpState);
                onStateChangeEventArgs.Add(a);
            };
            this.fdcPumpController.OnCurrentFuellingStatusChange += (s, a) =>
            {
                this.TestContext.WriteLine("Received a OnCurrentFuellingStatusChange, Finished: " + a.Transaction.Finished + ", amt: " + a.Transaction.Amount + ", vol: " + a.Transaction.Volumn);
                onCurrentFuellingStatusChangeEventArgs.Add(a);
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
                if (onRawDataWriting == 1)
                {
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    var readPumpStateResponse_NozzleLifted = new ReadPumpStateResponse
                    {
                        NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                        StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                        ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                    };
                    this.TestContext.WriteLine("Fire NozzleLifted");
                    this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_NozzleLifted);
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    var readPumpStateResponse_Nozzle开机 = new ReadPumpStateResponse
                    {
                        NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                        StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.开机,
                        ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                    };
                    this.TestContext.WriteLine("Fire Nozzle开机");
                    this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_Nozzle开机);
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                }
                else if (b.Message is ReadFuelDataRequest fuelDataRequest)
                {
                    fuelingStatusReportingTimes++;
                    var readFuelDataResponse = new ReadFuelDataResponse();
                    readFuelDataResponse.SetAmountAndVolume(100 + fuelingStatusReportingTimes, 20 + fuelingStatusReportingTimes);
                    this.TestContext.WriteLine("Fire FuelDataResponse");
                    this.mockCommunicator.FireOnDataReceived(readFuelDataResponse);

                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    if (onRawDataWriting >= 5)
                    {
                        var readPumpStateResponse_NozzleReplaced_And_停机 = new ReadPumpStateResponse
                        {
                            NozzleState = ReadPumpStateResponse.NozzleStateEnum.挂枪,
                            StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                            ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                        };
                        this.TestContext.WriteLine("Fire NozzleReplaced_And_停机");
                        this.mockCommunicator.FireOnDataReceived(readPumpStateResponse_NozzleReplaced_And_停机);
                        this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    }
                }
            };
            await this.processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(1800);

            Assert.AreEqual(4, onStateChangeEventArgs.Count, "OnStateChange should be called 3 times:  FdcCalling, FDC_AUTHORISED, FDC_FUELLING, FdcReady");
            // 1 extra requesting is to generate the final fuel trx, and will not fire event.
            Assert.AreEqual(fuelingStatusReportingTimes, onCurrentFuellingStatusChangeEventArgs.Count + 1, "onCurrentFuellingStatusChangeEventArgs should have many");
            Assert.AreEqual(1, onCurrentFuellingStatusChangeEventArgs.Where(a => a.Transaction.Finished).Count());
            Assert.AreEqual(100 + fuelingStatusReportingTimes,
                onCurrentFuellingStatusChangeEventArgs.First(a => a.Transaction.Finished).Transaction.Amount);
            Assert.AreEqual(20 + fuelingStatusReportingTimes,
                onCurrentFuellingStatusChangeEventArgs.First(a => a.Transaction.Finished).Transaction.Volumn);

            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, onStateChangeEventArgs[0].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_AUTHORISED, onStateChangeEventArgs[1].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_FUELLING, onStateChangeEventArgs[2].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_READY, onStateChangeEventArgs[3].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_READY, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_READY, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }

        [TestMethod]
        public async Task FuelTrxDone_Test1()
        {
            /* use FdcPumpController.AuthorizeAsync to auth pump rather than full simulation*/
            int onRawDataWriting = 0;
            int fuelingStatusReportingTimes = 0;
            int authorizingCalledTimes = 0;
            var onStateChangeEventArgs = new List<FdcPumpControllerOnStateChangeEventArg>();
            var onCurrentFuellingStatusChangeEventArgs = new List<FdcTransactionDoneEventArg>();
            this.fdcPumpController.OnStateChange += async (s, a) =>
             {
                 this.TestContext.WriteLine("Received a OnStateChange: " + a.NewPumpState);
                 onStateChangeEventArgs.Add(a);
                 if (a.NewPumpState == LogicalDeviceState.FDC_CALLING)
                 {
                     this.TestContext.WriteLine("AuthorizeWithAmountAsync");
                     await this.fdcPumpController.AuthorizeWithAmountAsync(1000, 1);
                 }
             };
            this.fdcPumpController.OnCurrentFuellingStatusChange += (s, a) =>
            {
                this.TestContext.WriteLine("Received a OnCurrentFuellingStatusChange, Finished: " + a.Transaction.Finished + ", amt: " + a.Transaction.Amount + ", vol: " + a.Transaction.Volumn);
                onCurrentFuellingStatusChangeEventArgs.Add(a);
            };
            // default is for simulate calling
            var readPumpStateResponse = new ReadPumpStateResponse
            {
                NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                ControlState = ReadPumpStateResponse.ControlStateEnum.受控
            };
            this.mockCommunicator.OnRawDataWriting += (a, b) =>
            {
                onRawDataWriting++;
                if (b.Message is ReadPumpStateRequest _)
                {
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    this.TestContext.WriteLine("Fire " + readPumpStateResponse.NozzleState + ", " + readPumpStateResponse.StartOrStopState);
                    this.mockCommunicator.FireOnDataReceived(readPumpStateResponse);
                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                }
                else if (b.Message is PresetAmountRequest presetAmountRequest)
                {
                    this.TestContext.WriteLine("Fire PresetAmountResponse");
                    this.mockCommunicator.FireOnDataReceived(new PresetAmountResponse());
                }
                else if (b.Message is OpenRequest openRequest)
                {
                    authorizingCalledTimes++;
                    // to authorized state.
                    readPumpStateResponse = new ReadPumpStateResponse
                    {
                        NozzleState = ReadPumpStateResponse.NozzleStateEnum.提枪,
                        StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.开机,
                        ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                    };
                }
                else if (b.Message is ReadFuelDataRequest fuelDataRequest)
                {
                    fuelingStatusReportingTimes++;
                    var readFuelDataResponse = new ReadFuelDataResponse();
                    readFuelDataResponse.SetAmountAndVolume(100 + fuelingStatusReportingTimes, 20 + fuelingStatusReportingTimes);
                    this.TestContext.WriteLine("Fire FuelDataResponse");
                    this.mockCommunicator.FireOnDataReceived(readFuelDataResponse);

                    this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    if (onRawDataWriting >= 5)
                    {
                        readPumpStateResponse = new ReadPumpStateResponse
                        {
                            NozzleState = ReadPumpStateResponse.NozzleStateEnum.挂枪,
                            StartOrStopState = ReadPumpStateResponse.StartOrStopStateEnum.停机,
                            ControlState = ReadPumpStateResponse.ControlStateEnum.受控
                        };
                        this.TestContext.WriteLine("Fire " + readPumpStateResponse.NozzleState + ", " + readPumpStateResponse.StartOrStopState);
                        this.TestContext.WriteLine("Pump is in state: " + this.fdcPumpController.QueryStatusAsync().Result);
                    }
                }
            };
            await this.processor.Start();
            this.fdcPumpController.OnFdcServerInit(new Dictionary<string, object>());
            await Task.Delay(1800);

            Assert.AreEqual(4, onStateChangeEventArgs.Count, "OnStateChange should be called 3 times:  FdcCalling, FDC_AUTHORISED, FDC_FUELLING, FdcReady");
            // 1 extra requesting is to generate the final fuel trx, and will not fire event.
            Assert.AreEqual(fuelingStatusReportingTimes, onCurrentFuellingStatusChangeEventArgs.Count + 1, "onCurrentFuellingStatusChangeEventArgs should have many");
            Assert.AreEqual(1, onCurrentFuellingStatusChangeEventArgs.Where(a => a.Transaction.Finished).Count());
            Assert.AreEqual(100 + fuelingStatusReportingTimes,
                onCurrentFuellingStatusChangeEventArgs.First(a => a.Transaction.Finished).Transaction.Amount);
            Assert.AreEqual(20 + fuelingStatusReportingTimes,
                onCurrentFuellingStatusChangeEventArgs.First(a => a.Transaction.Finished).Transaction.Volumn);

            Assert.AreEqual(LogicalDeviceState.FDC_CALLING, onStateChangeEventArgs[0].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_AUTHORISED, onStateChangeEventArgs[1].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_FUELLING, onStateChangeEventArgs[2].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_READY, onStateChangeEventArgs[3].NewPumpState);
            Assert.AreEqual(LogicalDeviceState.FDC_READY, this.fdcPumpController.QueryStatusAsync().Result,
                "status should change to: FDC_READY, but now is: " + this.fdcPumpController.QueryStatusAsync().Result);
        }
    }
}