///
/// Copyright (c) 2022 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.IO;
using log4net;
using Common;
using Config.Entities;
using TBF.Boxes;
using TBF.Resources;
using TBF.Rig.GenericDevices;
using TBF.UiBridge;

namespace TBF.Rig.TestMethods.StandingStartMassCollWODiv
{
    public class StandingStartMassCollWODirSeq : Sequences.SequenceBase
    {
        private static readonly ILog log = LogManager.GetLogger(typeof(StandingStartMassCollWODirSeq));

        /// <summary>
        /// Check capabilities of devces in the output path required for this test method
        /// </summary>
        /// <param name="devices">Devices</param>
        /// <returns>true when capabilities of devices are OK</returns>
        public static bool CheckDeviceCaps(Config.Entities.Test test, OutputPath devices, out string message)
        {
            if (!(StateMachine.ControlBoardMain is ControlBoard.Papouch.PapouchCB) &&
                !(StateMachine.ControlBoardMain is ControlBoard.Uni.UniCB))
            {
                /// Control board does not support this method
                message = string.Format("{0}: {1}", test.Name, Strings.Test_bench_does_not_suport_selected_test_method);
                return false;
            }

            if (!(devices.Scale is IScale))
            {
                /// Scale is missing
                message = string.Format("{0}: {1}", test.Name, Strings.Missing_a_scale);
                return false;
            }

            if (test.Volume > devices.Scale.Capacity * Constants.TankFullFactor)
            {
                /// Scale capacity is not sufficient
                message = string.Format("{0}: {1}", test.Name, Strings.Test_volume_exceeds_the_scale_capacity);
                return false;
            }

            if (!(devices.FlowMeter is IFlowMeter))
            {
                /// Flow meter is missing
                message = string.Format("{0}: {1}", test.Name, Strings.Missing_a_flow_meter);
                return false;
            }

            if (!(devices.RegValve is GenericDevices.IRegValve))
            {
                /// Regulation valve is missing
                message = string.Format("{0}: {1}", test.Name, Strings.Missing_a_regulation_valve);
                return false;
            }

            message = string.Empty;
            return true;
        }

		/// <summary>
		/// Fixed start mass collection method sequence
		/// </summary>
		/// <param name="test">Test entity</param>
		/// <returns>
		///		Event.Done . . . . . . . OK
		///		Event.MakeSecondPass . . OK, 2nd pass (=evaluation) required
		///		Event.UiCmdStop  . . . . Stopped by the user using the on-screen button STOP
		///		Event.OpArgumentError  . Target flow is out of range
		///		Event.Error  . . . . . . Unspecified error
		/// </returns>
		public IList<Event> Execute(Config.Entities.Test test, int repetitionNr, bool isLastRepetition,
									Common.DebugMode debugLevel)
        {
            ControlBoard.IControlBoard cBrd = StateMachine.ControlBoardMain;
            IScale scale = cBrd.Devices.Scale as IScale;

            if ((outPath.FlowMeter is IFlowMeterSingle) &&
                (outPath.FlowMeter as IFlowMeterSingle).GetRange(test.TempLimLo, test.TempLimHi) == -1)
            {
                Bridge.OnError(this, Strings.Flow_meter_temperature_range_does_not_fit_this_test_conditions);
                return new List<Event> { Event.ConfigurationError };    /// or Event.UiCmdStop ???
            }

            IList<Event> e;                                 /// Events from currently running operations
            int waterMetersCount = Math.Min(BenchInfo.WaterMetersCount, sensPath.RegisterReaders.Length);                                                            
            DateTimeBox timeStampStart = new DateTimeBox();
            DateTimeBox timeStampEnd = new DateTimeBox();
            FloatBox startSwitchTime = new FloatBox();
            FloatBox stopSwitchTime = new FloatBox();
            int tMass1 = 0;
            int tMass2 = 0;
            checkUiOp = new Operations.CheckUIOp(true);     /// Runs in more then one state
			processDataLoggingOp = new TBF.Rig.Operations.ProcessDataLoggingOp(processDataLogger, this, false);

            if (cBrd is ControlBoard.Uni.UniCB)
            {
                int[] filters = new int[] { 0, 0, 0, 0, 0, 0, 0, 0 };
                if (sensPath != null && sensPath.RegisterReaders != null)
                {
                    foreach (var rr in sensPath.RegisterReaders)
                    {
                        IRegReaderPulses rrPls = rr as IRegReaderPulses;
                        if (rrPls != null && rrPls.Position >= 1 && rrPls.Position <= 8)
                        {
                            filters[rrPls.Position - 1] = rrPls.Filter;
                        }
                    }
                }
                (cBrd as ControlBoard.Uni.UniCB).SetFiltersPidShortPulses(filters, outPath.PidCoef, test.ShortPulses);
            }

            IList<IOperation> readTempPressOps = new List<IOperation>();
            if (benchPath.TempMtrUp != null) readTempPressOps.Add(benchPath.TempMtrUp.ReadTempOp(ref TempUp));
            if (benchPath.TempMtrDown != null) readTempPressOps.Add(benchPath.TempMtrDown.ReadTempOp(ref TempDown));
            if (outPath.TempMtrDiv != null) readTempPressOps.Add(outPath.TempMtrDiv.ReadTempOp(ref TempDiv));
            if (benchPath.PressMtrUp != null) readTempPressOps.Add(benchPath.PressMtrUp.ReadPressureOp(ref PressUp));
            if (benchPath.PressMtrDown != null) readTempPressOps.Add(benchPath.PressMtrDown.ReadPressureOp(ref PressDown));
            if (benchPath.PressMtrDelta != null) readTempPressOps.Add(benchPath.PressMtrDelta.ReadPressureOp(ref PressDelta));
            if (benchPath.ElectricMtrUp != null) readTempPressOps.Add(benchPath.ElectricMtrUp.ReadAdjustableOp(ref ElectricUp));
            if (benchPath.ElectricMtrDown != null) readTempPressOps.Add(benchPath.ElectricMtrDown.ReadAdjustableOp(ref ElectricDown));
            if (benchPath.ElectricMtrDelta != null) readTempPressOps.Add(benchPath.ElectricMtrDelta.ReadAdjustableOp(ref ElectricDelta));
            if (heatMetersPath != null) readTempPressOps.Add(heatMetersPath.TMeterRefWarm1.ReadTempOp(ref TempRefHi1));
            if (heatMetersPath != null) readTempPressOps.Add(heatMetersPath.TMeterRefWarm2.ReadTempOp(ref TempRefHi2));
            if (heatMetersPath != null) readTempPressOps.Add(heatMetersPath.TMeterRefCold1.ReadTempOp(ref TempRefLo1));
            if (heatMetersPath != null) readTempPressOps.Add(heatMetersPath.TMeterRefCold2.ReadTempOp(ref TempRefLo2));

            Event retVal = Event.Done;

            int totalPulses = Convert.ToInt32(test.Volume / outPath.FlowMeter.LtrPerPulse);

            ///============================================================================================

            /// Read pressure and temperature once before calling Bridge.OnTestSelected(...)
            State.Create(string.Format("{0}({1}) : Measuring process data", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
            }
            while (e.Contains(Event.Busy));

            /// Start the test, initialize test results
            Bridge.OnTestSelected(this, new TestSelectedEventArgs(test, repetitionNr, inPath, benchPath, outPath, sensPath, heatMetersPath));
            string testName = Results.Utils.GetTestName(test.Name, test.Repeats, repetitionNr);


            if (test.DoDraining || (scale.Mass + test.Volume >= scale.Capacity * Constants.TankFullFactor))
			{
                ///
                /// There is not enough room in the tank OR unconditional draining ... drain the water tank
                ///
                IList<IOperation> ops = new List<IOperation>(readTempPressOps);
				switch (DrainTheTank(scale, ops))
				{
					case Event.Error:	  { retVal = Event.Error;	  goto stopTest; }
					case Event.UiCmdStop: { retVal = Event.UiCmdStop; goto stopTest; }
				}
			}

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Starting_the_pump);
            //------------------------------------------------

			Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.FlowSetting));
			int flowSetTime0 = StateMachine.Time;

            IList<IValve> pumpAndDrainValve = new List<IValve>();
            pumpAndDrainValve.Add(inPath.Pump);
            pumpAndDrainValve.Add(scale.DrainValve);

			if (inPath.Pump is GenericDevices.IPumpFM) (inPath.Pump as GenericDevices.IPumpFM).TurnOn(test.PumpPower);
            ///
            State.Create(string.Format("{0}({1}) : Starting the pump", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 //.AddOperation(new Operations.SetAllRegulValvesOp(inPath.RegulValves, inPath.RegulValvesPct, 60))
                 .AddOperation(inPath.Pump != null ? cBrd.SetValvesOp(pumpAndDrainValve, null) : null)
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.FlowSetting));

                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                if (e.Contains(Event.Error))      { retVal = Event.Error;     goto stopTest; }
            }
			while (e.Contains(Event.ValvesBusy) /* || !e.Contains(Event.AllPositionsReached)*/);

            if (test.TimePump2StartV > 0)
            {
                State.Create(string.Format("{0}({1}) : Waiting after the pump started", test.Method, test.Name))
                     .AddOperation(checkUiOp)
                     .AddOperations(readTempPressOps)
                     .AddOperation(new Operations.TimerOp(test.TimePump2StartV))
                     .EnterState();
                do {
                    e = StateMachine.WaitRunDevsRunOps();
                    Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.FlowSetting));

                    if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                }
                while (!e.Contains(Event.TimerExpired));
            }


            if (benchPath.StopBFValve != null)
            {
                State.Create(string.Format("{0}({1}) : Opening the stop backflow valve", test.Method, test.Name))
                     .AddOperation(checkUiOp)
                     .AddOperations(readTempPressOps)
                     .AddOperation(cBrd.SetValvesOp(benchPath.StopBFValve, null))
                     .EnterState();
                do {
                    e = StateMachine.WaitRunDevsRunOps();
                    if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                    if (e.Contains(Event.Error))      { retVal = Event.Error;     goto stopTest; }
                }
                while (!e.Contains(Event.ValvesSet));
            }


            if (test.TimeBeforeFlow > 0)
            {
                State.Create(string.Format("{0}({1}) : Waiting before flow setting process starts", test.Method, test.Name))
                     .AddOperation(checkUiOp)
                     .AddOperations(readTempPressOps)
                     .AddOperation(new Operations.TimerOp(test.TimeBeforeFlow))
                     .EnterState();
                do {
                    e = StateMachine.WaitRunDevsRunOps();
                    Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.FlowSetting));

                    if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                }
                while (!e.Contains(Event.TimerExpired));
            }

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Setting_the_flow);
            //------------------------------------------------
            if (inPath.Pump is GenericDevices.IPumpFM)
            {
                (inPath.Pump as GenericDevices.IPumpFM).TurnOn(test.PumpPower);
            }
            ///
            State.Create(string.Format("{0}({1}) : Pump on", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(cBrd.SetValvesOp(pumpAndDrainValve, null))
				 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.FlowSetting));

                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
            }
            while (e.Contains(Event.ValvesBusy));
            ///
            State.Create(string.Format("{0}({1}) : Start valve open", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(cBrd.OpenStartValveOp())
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.FlowSetting));

                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
            }
            while (e.Contains(Event.ValvesBusy));
            ///
            State.Create(string.Format("{0}({1}) : Setting the flow", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(cBrd.SetFlowOp(test.QfromM3ph(), test.QtoM3ph(), RefFlow, FlowSettingTimeoutSec))
				 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.FlowSetting));

                if (e.Contains(Event.OpArgumentError)) { retVal = Event.OpArgumentError; goto stopTest; }
                if (TestAndLogUiCmdStop(test, e))      { retVal = Event.UiCmdStop;       goto stopTest; }
                if (e.Contains(Event.RegulValveTimeOut))
                {
                    Bridge.OnError(this, Strings.Flow_adjustment_failed);
                    retVal = Event.RecoverableError;
                    goto stopTest;
                }
                if (e.Contains(Event.Next))
                {
                    break;          /// Simulate flow is within range
                }
            }
            while (!e.Contains(Event.FlowReached));

            ///
            /// Flow is withing required range at this point
            ///
            int flowSetTime = StateMachine.Time - flowSetTime0;
			if (!string.IsNullOrEmpty(test.TempControl) && benchPath.TempMtrUp != null && benchPath.TempMtrDown != null)
			{
				//---------------------------------------------------
				Bridge.OnActivity(this, Strings.Setting_temperature);
				//---------------------------------------------------

				State.Create(string.Format("{0}({1}) : Wait until the water temperature is within limits", test.Method, test.Name))
					 .AddOperation(checkUiOp)
                     .AddOperations(readTempPressOps)
					 .EnterState();
				do {
					e = StateMachine.WaitRunDevsRunOps();
					if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                    if (e.Contains(Event.Next))
                    {
                        break;          /// Simulate temperature is within range
                    }

					if (TempUp.Val >= test.TempLimLo && TempUp.Val <= test.TempLimHi &&
						TempDown.Val >= test.TempLimLo && TempDown.Val <= test.TempLimHi)
					{
                        break;          /// Temperature set withing required range
                    }
				}
				while (true);
			}

            ///
            /// Temperature is withing required range at this point
            /// 

            //-----------------------------------------------------------------
            Bridge.OnActivity(this, Strings.Stopping_flow_for_the_fixed_start);
			//-----------------------------------------------------------------
            State.Create(string.Format("{0}({1}) : Stop flow regulation", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .EnterState();
            e = StateMachine.WaitRunDevsRunOps();
            if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
            if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }

            IOperation testInProgress = cBrd.StandingStartStopTestOp(test, 2 * totalPulses, false);
            IOperation controlFlowOp = cBrd.SetFlowOp(test.QfromM3ph(), test.QtoM3ph(), RefFlow, int.MaxValue, test.TimeBeforeFlow);

            State.Create(string.Format("{0}({1}) : Start the standing start/stop test", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(testInProgress)
                 .EnterState();
            for (int i = 0; i < 3; i++)
            {
                e = StateMachine.WaitRunDevsRunOps();
                if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
            }

            State.Create(string.Format("{0}({1}) : Close the start/stop valve before measuring the start mass", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(testInProgress)
                 .AddOperation(cBrd.CloseStartValveOp())
				 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                if (e.Contains(Event.Error))      { retVal = Event.Error;     goto stopTest; }
                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
            }
            while (!e.Contains(Event.ValvesSet));


            int time = StateMachine.Time;
            double currentFlow = RefFlow.Val;

            LogProcessDataTestInfo(processDataLogger, test.Procedure.Name, test.Name);

            if (heatMetersPath == null) LogProcessDataHeader(processDataLogger, "Start mass");
            else LogProcessDataHeaderHeatMeters(processDataLogger, "Start mass");

			///
			/// Enter water meter begin states and read the start mass at the same time
			///
			GenericDevices.IHasWMStatesForm dataEntryCmpnt = TbfComponents.FindComponent(StateMachine.Procedure.DataEntry) as GenericDevices.IHasWMStatesForm;
            if (dataEntryCmpnt != null)
            {
                string fileName = string.Format("{0}-start.bmp", test.Name);

                if (dataEntryCmpnt is GenericDevices.IDataEntryForCamera)
                {
                    string[] startImages = new string[sensPath.RegisterReaders.Length];

                    State state2 = State.Create(string.Format("{0}({1}) : Grab images", test.Method, test.Name))
                                        .AddOperation(checkUiOp)
                                        .AddOperations(readTempPressOps)
                                        .AddOperation(testInProgress)
                                        .AddOperation(processDataLoggingOp);

                    for (int i = 0; i < sensPath.RegisterReaders.Length; i++)
                    {
                        GenericDevices.IRegReaderStillCamera roi = sensPath.RegisterReaders[i] as GenericDevices.IRegReaderStillCamera;
                        if (roi != null)
                        {
                            string directory = Path.Combine(Program.TempImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
                            Directory.CreateDirectory(directory);
                            startImages[i] = Path.Combine(directory, fileName);
                            state2.AddOperation(roi.GrabImageOp(startImages[i]));
                        }
                        else
                        {
                            /// Camera simulation
                            string directory = Path.Combine(Program.TempImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
                            Directory.CreateDirectory(directory);
                            startImages[i] = Path.Combine(directory, fileName);
                        }
                    }
                    state2.EnterState();
                    do {
                        e = StateMachine.WaitRunDevsRunOps();

                        Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.Test));

                        if (e.Contains(Event.Error))      { retVal = Event.Error;     break; }
                        if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; break; }
                    }
                    while (e.Contains(Event.CameraBusy));

                    (dataEntryCmpnt as GenericDevices.IDataEntryForCamera).StartImages = startImages;
                }

                Bridge.OnActivity(this, Strings.Enter_water_meter_data);
                State.Create(string.Format("{0}({1}) : Enter start states of water meters", test.Method, test.Name))
                     .AddOperation(checkUiOp)
                     .AddOperations(readTempPressOps)
                     .AddOperation(testInProgress)
                     .AddOperation((dataEntryCmpnt as GenericDevices.IHasWMStatesForm).ShowTestStartFormOp(sensPath.RegisterReaders))
                     .AddOperation(processDataLoggingOp)
                     .EnterState();
                do {
                    e = StateMachine.WaitRunDevsRunOps();
                    if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                }
                while (!e.Contains(Event.ModelessFormClosed));

                for (int i = 0; i < waterMetersCount; i++)
                {
                    GenericDevices.IRegReader rr = sensPath.RegisterReaders[i];

                    if (rr is Rig.RegisterReaders.StandingStartStop.RegisterReader)
                        (rr as Rig.RegisterReaders.StandingStartStop.RegisterReader).BeginWMState = dataEntryCmpnt.WMStartState(i);

                    if (rr is Rig.Network.Camera.RoiForFixedStart.Roi)
                        (rr as Rig.Network.Camera.RoiForFixedStart.Roi).BeginWMState = dataEntryCmpnt.WMStartState(i);
                    if (rr is Rig.Network.Camera.RoiForFixedStartKeyence.Roi)
                        (rr as Rig.Network.Camera.RoiForFixedStartKeyence.Roi).BeginWMState = dataEntryCmpnt.WMStartState(i);
                }

                if (dataEntryCmpnt is GenericDevices.IDataEntryForCamera && (dataEntryCmpnt as GenericDevices.IDataEntryForCamera).SaveImages)
                {
                    /// SaveImages==true ... copy images to the directory that will be archived at the end of the cycle
                    for (int i = 0; i < sensPath.RegisterReaders.Length; i++)
                    {
                        GenericDevices.IRegReaderStillCamera roi = sensPath.RegisterReaders[i] as GenericDevices.IRegReaderStillCamera;
                        if (roi != null)
                        {
                            string srcDir = Path.Combine(Program.TempImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
                            string destDir = Path.Combine(Program.ImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
                            try
                            {
                                if (File.Exists(Path.Combine(srcDir, fileName)))
                                {
                                    Directory.CreateDirectory(destDir);
                                    string destFName = string.IsNullOrEmpty((dataEntryCmpnt as IDataEntryForCamera).TestStartImgName(i, testName))
                                        ? fileName : (dataEntryCmpnt as IDataEntryForCamera).TestStartImgName(i, testName);
                                    File.Copy(Path.Combine(srcDir, fileName), Path.Combine(destDir, destFName), true);
                                }
                            }
                            catch (Exception exc)
                            {
                                log.ErrorFormat("Failed to copy image {0} to {1}: {2}", fileName, destDir, exc.Message);
                            }
                        }
                    }
                }
            }

            ///
            /// Make sure the drain valve is closed
            ///
            State.Create(string.Format("{0}({1}) : Make sure the drain valve is closed", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(cBrd.SetValvesOp(null, scale.DrainValve))
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.JustStarted));

                if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
            }
            while (!e.Contains(Event.ValvesSet));
 
            //----------------------------------------------------
            Bridge.OnActivity(this, Strings.Measuring_the_weight);
            //----------------------------------------------------

            State.Create(string.Format("{0}({1}) : Measure the start mass", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(testInProgress)
                 .AddOperation(scale.ReadStableMassOp(ref StartMass, test.TimeFlow2Mass, test.MassMethod, test.MassRepeats, test.MassSpread))
                 .AddOperation(processDataLoggingOp)
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                if (e.Contains(Event.ScaleTimeout))
                {
                    Bridge.OnError(this, Strings.Mass_measurement_timeout);
                    retVal = Event.RecoverableError;
                    goto stopTest;
                }
            }
            while (!e.Contains(Event.ScaleDone) && !e.Contains(Event.Next));
            ///
            tMass1 = StateMachine.Time;


            if (heatMetersPath == null)
                LogProcessDataHeader(processDataLogger, "Measurement");
            else
                LogProcessDataHeaderHeatMeters(processDataLogger, "Measurement");

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Test_in_progress);
            //------------------------------------------------

            /// Measurement loop preparation
            TestStartTime = DateTime.Now;
            StartTime = (double)StateMachine.Time;
            int estimtdEndTime = StateMachine.Time + (int)test.TestTime;
            int remainingTime;
            StartNewStatistics(outPath.FlowMeter, BatchRslts.Batch.BatchNr, test, repetitionNr, Math.Max((int)(test.TestTime / 10), 5));

            int initialPulsesCount = RefPulses;

            State.Create(string.Format("{0}({1}) : Start the test, open the start/stop valve", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(cBrd.OpenStartValveOp(timeStampStart, startSwitchTime))
                 .AddOperation(testInProgress)
                 .AddOperation(controlFlowOp)
                 .AddOperation(processDataLoggingOp)
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                if (e.Contains(Event.OpArgumentError)) { retVal = Event.OpArgumentError; goto stopTest; }
                if (e.Contains(Event.Error))           { retVal = Event.Error;           goto stopTest; }
                if (TestAndLogUiCmdStop(test, e))      { retVal = Event.UiCmdStop;       goto stopTest; }

                /// Show remaining time
                if ((remainingTime = Math.Max(estimtdEndTime - StateMachine.Time, 0)) > 60)
                    Bridge.OnActivity(this, string.Format("{0} ... {1} {2} {3} {4}", Strings.Test_in_progress, remainingTime / 60, "min", remainingTime % 60, Strings.sec));
                else
                    Bridge.OnActivity(this, string.Format("{0} ... {1} s", Strings.Test_in_progress, remainingTime));

                /// Update statistics
                RefFrequency.Val = cBrd.RefFrequency;
                RefFlow.Val = outPath.FlowMeter.ReadFlow();
                UpdateAllStatistics();

                Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.Test));
            }
            while (cBrd.RefPulses < initialPulsesCount + totalPulses && !e.Contains(Event.TestCompleted) && !e.Contains(Event.Next));

            /// Measurement loop end
            log.WarnFormat("Start valve switch time on test start = {0} ms", cBrd.ValveOpenCloseTime);
            StopRecordingStatistics();
            EndTime = (double)StateMachine.Time;
            TestEndTime = DateTime.Now;

            State.Create(string.Format("{0}({1}) : Closing the start/stop valve at the end of the standing start/stop test", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(testInProgress)
                 .AddOperation(cBrd.CloseStartValveOp(timeStampEnd, stopSwitchTime))
                 .AddOperation(processDataLoggingOp)
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
            }
            while (e.Contains(Event.ValvesBusy));

            log.WarnFormat("Start valve switch time on test end = {0} ms", cBrd.ValveOpenCloseTime);

            if (heatMetersPath == null)
                LogProcessDataHeader(processDataLogger, "End mass");
            else
                LogProcessDataHeaderHeatMeters(processDataLogger, "End mass");

            //----------------------------------------------------
            Bridge.OnActivity(this, Strings.Measuring_the_weight);
            //----------------------------------------------------
            State.Create(string.Format("{0}({1}) : Measuring the end mass", test.Method, test.Name))
                 .AddOperation(checkUiOp)
                 .AddOperations(readTempPressOps)
                 .AddOperation(testInProgress)
                 .AddOperation(inPath.Pump != null ? cBrd.SetValvesOp(null, inPath.Pump) : null)
                 .AddOperation(scale.ReadStableMassOp(ref EndMass, test.TimeStop2Mass, test.MassMethod, test.MassRepeats, test.MassSpread))
                 .AddOperation(new Operations.TimerOp(StableMassMsrmntTimeoutSec))
                 .AddOperation(processDataLoggingOp)
                 .EnterState();
            do {
                e = StateMachine.WaitRunDevsRunOps();
                if (e.Contains(Event.Error))      { retVal = Event.Error;     goto stopTest; }
                if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                if (e.Contains(Event.ScaleTimeout))
                {
                    Bridge.OnError(this, Strings.Mass_measurement_timeout);
                    retVal = Event.RecoverableError;
                    goto stopTest;
                }
            }
            while (!e.Contains(Event.ScaleDone) && !e.Contains(Event.Next));
            ///
            tMass2 = StateMachine.Time;

            if (test.DoDrainingAfter)
            {
                State.Create(string.Format("{0}({1}) : Open the drain valve", test.Method, test.Name))
                     .AddOperation(checkUiOp)
                     .AddOperation(cBrd.SetValvesOp(scale.DrainValve, null))
                     .EnterState();
                do
                {
                    e = StateMachine.WaitRunDevsRunOps();
                    if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
                }
                while (e.Contains(Event.ValvesBusy));
            }


            double massStart = MeasurementCorrection.CorrectedValue(StartMass.Val, scale.Corrections);
            double massEnd = MeasurementCorrection.CorrectedValue(EndMass.Val, scale.Corrections);
            double densityOut = Formulas.WaterDensityFromTempPress((TempUpStat.Average + TempDownStat.Average) / 2,
                                                                   (PressUpStat.Average + PressDownStat.Average) / 2);
            double buoyancy = Formulas.Buoyancy();
            double massOfEvaporatedWater = (double)(tMass2 - tMass1) * outPath.Scale.EvaporationRate(TempDivStat.Average);
            double volumeCTV = 1000.0 * buoyancy * (massEnd - massStart + massOfEvaporatedWater) / densityOut;
			if (debugLevel == Common.DebugMode.Simulate) volumeCTV = test.Volume;

            double refEnergy = Energy.Sum * volumeCTV / VolumeForEnergy.Sum;					/// [J]=[J]*[l]/[l]

            ///
            /// Enter watermeter end states here
            ///
            if (dataEntryCmpnt != null)
            {
				string fileName = string.Format("{0}-end.bmp", test.Name);

				if (dataEntryCmpnt is GenericDevices.IDataEntryForCamera)
				{
					string[] endImages = new string[sensPath.RegisterReaders.Length];

					State state2 = State.Create(string.Format("{0}({1}) : Grabbing images", test.Method, test.Name))
									   .AddOperation(checkUiOp);
					for (int i = 0; i < sensPath.RegisterReaders.Length; i++)
					{
						GenericDevices.IRegReaderStillCamera roi = sensPath.RegisterReaders[i] as GenericDevices.IRegReaderStillCamera;
						if (roi != null)
						{
							string directory = Path.Combine(Program.TempImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
							Directory.CreateDirectory(directory);
							endImages[i] = Path.Combine(directory, fileName);
							state2.AddOperation(roi.GrabImageOp(endImages[i]));
						}
                        else
                        {
                            /// Camera simulation
                            string directory = Path.Combine(Program.TempImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
                            Directory.CreateDirectory(directory);
                            endImages[i] = Path.Combine(directory, fileName);
                        }
                    }
					state2.EnterState();
					do {
						e = StateMachine.WaitRunDevsRunOps();

						Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.Test));

						if (e.Contains(Event.Error)) { retVal = Event.Error; break; }
						if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; break; }
					}
					while (e.Contains(Event.CameraBusy));

					(dataEntryCmpnt as GenericDevices.IDataEntryForCamera).EndImages = endImages;
				}
				
				Bridge.OnActivity(this, Strings.Enter_water_meter_data);
                State state = State.Create(string.Format("{0}({1}) : Entering the end-state", test.Method, test.Name));
                if (false && dataEntryCmpnt is GenericDevices.IHasHeatMtrStatesForm)
                {
                    state.AddOperation((dataEntryCmpnt as GenericDevices.IHasHeatMtrStatesForm).
						ShowTestEndFormOp(sensPath.RegisterReaders,
										  volumeCTV, test.ErrLimLo + test.Uncertainty, test.ErrLimHi - test.Uncertainty,
                                          refEnergy, test.ErrLimLo + test.Uncertainty, test.ErrLimHi - test.Uncertainty));
                }
                else
                {
					state.AddOperation(dataEntryCmpnt.ShowTestEndFormOp(sensPath.RegisterReaders,
																	    volumeCTV, test.ErrLimLo + test.Uncertainty, test.ErrLimHi - test.Uncertainty));
                }
                state.AddOperation(checkUiOp)
                     .AddOperations(readTempPressOps)
                     .EnterState();
                do {
                    e = StateMachine.WaitRunDevsRunOps();
                    if (TestAndLogUiCmdStop(test, e)) { retVal = Event.UiCmdStop; goto stopTest; }
                }
                while (!e.Contains(Event.ModelessFormClosed));

                for (int i = 0; i < waterMetersCount; i++)
                {
					GenericDevices.IRegReader rr = sensPath.RegisterReaders[i];

					if (rr is Rig.RegisterReaders.StandingStartStop.RegisterReader)
						(rr as Rig.RegisterReaders.StandingStartStop.RegisterReader).EndWMState = dataEntryCmpnt.WMEndState(i);

					if (rr is Rig.Network.Camera.RoiForFixedStart.Roi)
						(rr as Rig.Network.Camera.RoiForFixedStart.Roi).EndWMState = dataEntryCmpnt.WMEndState(i);
				}

				if (dataEntryCmpnt is GenericDevices.IDataEntryForCamera && (dataEntryCmpnt as GenericDevices.IDataEntryForCamera).SaveImages)
				{
					/// SaveImages==true ... copy images to the directory that will be archived at the end of the cycle
					for (int i = 0; i < sensPath.RegisterReaders.Length; i++)
					{
						GenericDevices.IRegReaderStillCamera roi = sensPath.RegisterReaders[i] as GenericDevices.IRegReaderStillCamera;
						if (roi != null)
						{
							string srcDir = Path.Combine(Program.TempImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
							string destDir = Path.Combine(Program.ImagesDir, BatchRslts.Batch.BatchNr.ToString(), (i + 1).ToString());
                            try
                            {
                                if (File.Exists(Path.Combine(srcDir, fileName)))
                                {
                                    Directory.CreateDirectory(destDir);
                                    string destFName = string.IsNullOrEmpty((dataEntryCmpnt as IDataEntryForCamera).TestEndImgName(i, testName))
                                        ? fileName : (dataEntryCmpnt as IDataEntryForCamera).TestEndImgName(i, testName);
                                    File.Copy(Path.Combine(srcDir, fileName), Path.Combine(destDir, destFName), true);
                                }
                            }
                            catch (Exception exc)
                            {
                                log.ErrorFormat("Failed to copy image {0} to {1}: {2}", fileName, destDir, exc.Message);
                            }
                        }
					}
				}
			}

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Test_completed);
            //------------------------------------------------

            /// Make sure the CycleBeginForm is closed so that water meter data (s/n) can be copied into results
            if (UIFlowControl.Stop == WaitBeginFormClosed()) goto stopTest;

            ///
            /// Populate TestResult data entity with data
            /// 
            Results.Entities.TestRslt tstRslt = BatchRslts.GetTestRslt(testName, test.Part);

            bool stopCycle = false;
            if (tstRslt != null)
            {
                Results.Utils.GetCounterStates(tstRslt, Program.LocalSettings.Counters);

                /// Raw data
                UpdateTempPressDensAmb(tstRslt);
                tstRslt.MethodClass  = TbfComponents.FindComponent(test.Method).ClassName;
                tstRslt.StartTime    = TestStartTime;
                tstRslt.EndTime      = TestEndTime;
                tstRslt.FlowSetTime  = flowSetTime;
                tstRslt.TestTime     = Math.Max(1.0, DateTimeBox.DurationSec(timeStampStart, timeStampEnd));    /// Min. 1s to prevent division by zero
                tstRslt.PulsesMaster = Convert.ToDouble(cBrd.RefPulses);	                                    /// Pulses of the master flow meter (test total)
                tstRslt.MassStartRaw = StartMass.Val;
                tstRslt.MassEndRaw   = EndMass.Val;
                tstRslt.TimeBtwnMassMsrmnts = tMass2 - tMass1;

                /// Corrected values
                tstRslt.MassStart = massStart;
                tstRslt.MassEnd = massEnd;
                tstRslt.MassOfEvapWater = massOfEvaporatedWater;

                /// Main results
                tstRslt.VolumeCTV = volumeCTV;							/// [l] 1000.0f is because density is in [kg/m3]
                tstRslt.Flow = 3.6 * volumeCTV / tstRslt.TestTime;	    /// [m3/h]

                if (cBrd is ControlBoard.Uni.UniCB)
                {
                    /// Test bench with Uni control board and q reference flow meter
                    tstRslt.ConstMasterRaw = outPath.FlowMeter.LtrPerPulse;
                    tstRslt.ConstMasterCorr = outPath.FlowMeter.LtrPerPulseCorrected(tstRslt.Flow, tstRslt.TempDownMean);
                    tstRslt.VolumeMaster = tstRslt.ConstMasterRaw * tstRslt.PulsesMaster;						/// [l] volume from the master flow meter
                    tstRslt.ConstMaster = (tstRslt.VolumeMaster != 0) ? (tstRslt.ConstMasterRaw * tstRslt.VolumeCTV / tstRslt.VolumeMaster) : tstRslt.ConstMasterCorr;
                }
                else
                {
                    /// Test bench with Papouch control board without reference flow meter
                    tstRslt.VolumeMaster = volumeCTV;					/// [l] volume from the master flow meter
                    tstRslt.ConstMasterRaw = 1;                         /// Uncorrected master flowmeter coefficient
                    tstRslt.ConstMasterCorr = 1;                        /// Corrected master pulses per liter
                    tstRslt.ConstMaster = 1;
                }
                tstRslt.ErrorMaster = Formulas.ErrorFromVolumes(tstRslt.VolumeMaster, tstRslt.VolumeCTV);

                tstRslt.FlowMean = (float)RefFlowStat.Average;
				tstRslt.FlowStart = (float)RefFlowStat.First;
				tstRslt.FlowEnd = (float)RefFlowStat.Last;
				tstRslt.FlowMin = (float)RefFlowStat.Min;
                tstRslt.FlowMax = (float)RefFlowStat.Max;

                tstRslt.DiverterStart = startSwitchTime.Val;
                tstRslt.DiverterEnd = stopSwitchTime.Val;

                long infoFlags = 0;
                tstRslt.ErrorFlags = (ErrorFlagsComp != null) ? ErrorFlagsComp.GetErrorFlags(tstRslt, false, true, startSwitchTime.Val, stopSwitchTime.Val, out infoFlags, out stopCycle) : 0;
                tstRslt.InfoFlags = infoFlags;

                ///
                /// Single meters
                ///
                for (int i = 0; i < BatchRslts.WMPositionsCount; i++)
                {
                    if (!test.IsPartCompatible(Utils.PartNr(i + 1, BatchRslts.Batch.Compound))) continue;

                    Results.Entities.MeterTestRslt meterRslt = BatchRslts.GetMeterTestRslt(testName, i, Common.CompoundMeterId.Single);
                    GenericDevices.IRegReader regReader = sensPath.RegisterReaders[i];

                    if (meterRslt != null && regReader != null)
                    {
                        meterRslt.RegReaderType = (int)regReader.RegisterReaderType;
                        meterRslt.PulsesPerLiter = regReader.PulsesPerLtr;
                        meterRslt.VolumeStart = regReader.BeginWMState;
                        meterRslt.VolumeEnd = regReader.EndWMState;
                        meterRslt.VolumeMeter = Math.Abs(meterRslt.VolumeEnd - meterRslt.VolumeStart);
                        meterRslt.VolumeRef = tstRslt.VolumeCTV;      /// liter
                        meterRslt.PulsesMeter = meterRslt.VolumeMeter;
                        meterRslt.PulsesMaster = tstRslt.PulsesMaster;
                        meterRslt.TestTime = tstRslt.TestTime;
                        meterRslt.Error = Formulas.ErrorFromVolumes(meterRslt.VolumeMeter, meterRslt.VolumeRef);
                        meterRslt.Passed = (meterRslt.Error >= test.GetErrLimLo(tstRslt.VolumeCTV, tstRslt.TestTime) + test.Uncertainty)
                                        && (meterRslt.Error <= test.GetErrLimHi(tstRslt.VolumeCTV, tstRslt.TestTime) - test.Uncertainty)
                                        && (tstRslt.ErrorFlags == 0);
                        meterRslt.TestDone = true;
                        tstRslt.TestDone = true;
                    }
                }

                tstRslt.Components = Results.Entities.Components
                    .UpdateList(BatchRslts.ComponentsList,
                                new Results.Entities.Components((BenchInfo != null) ? BenchInfo.TestBenchId : 1,
                                                                (BenchInfo != null) ? BenchInfo.TestBenchName : "testbench",
                                                                inPath.Pump != null ? inPath.Pump.Name : string.Empty,
                                                                outPath.FlowMeter != null ? outPath.FlowMeter.Name : string.Empty,
                                                                scale != null ? scale.Name : string.Empty,
                                                                outPath.RegValve != null ? outPath.RegValve.Name : string.Empty,
                                                                outPath.Diverter != null ? outPath.Diverter.Name : string.Empty));

                /// Update water meter error flags
                if (ErrorFlagsComp != null)
                {
                    if (BatchRslts.Batch != null && BatchRslts.Batch.WaterMeters != null)
                    {
                        for (int i = 0; i < BatchRslts.WMPositionsCount; i++)
                        {
                            if (BatchRslts.Batch.WaterMeters[i] != null && !BatchRslts.Batch.WaterMeters[i].Disabled)
                            {
                                long wmInfoFlags;
                                BatchRslts.Batch.WaterMeters[i].ErrorFlags = ErrorFlagsComp.GetWMtrErrorFlags(BatchRslts.Batch.WaterMeters[i].MeterTestRslts, out wmInfoFlags);
                                BatchRslts.Batch.WaterMeters[i].InfoFlags = wmInfoFlags;
                            }
                        }
                    }
                }

                /// Update results
                Bridge.OnTestCompleted(this, new TestCompletedEventArgs(testName, tstRslt));
            }

            Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Progress.TransitionAfter));

            /// Append the results to the CSV-file
            allResults.Info(TestResult2CsvLine(testName, test.Part));

            if (stopCycle) retVal = Event.ErrorFlagsStop;

        stopTest:

			StopRecordingStatistics();

            ///
            ///  Quit this sequence
            ///
            if (isLastRepetition || retVal == Event.UiCmdStop
                                 || retVal == Event.OpArgumentError
                                 || retVal == Event.RecoverableError
                                 || retVal == Event.ErrorFlagsStop
                                 || retVal == Event.Error
                                 || retVal == Event.ConfigurationError)
            {
                cBrd.StopAll(false);
            }

            return new List<Event> { retVal };
        }
    }
}