using System;
using System.Collections.Generic;
using System.Text;
using log4net;
using TBF.BenchControl;
using TBF.Boxes;
using TBF.Resources;
using TBF.UiBridge;

namespace TBF.BenchControl.TestMethods.ReferenceFlowmeterCalibration
{
	public class ReferenceFlowmeterCalibrationSeq : Sequences.SequenceBase
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(ReferenceFlowmeterCalibrationSeq));

		/// <summary>
		/// Flying start mass collection method sequence
		/// </summary>
		/// <param name="test">Test entity</param>
		/// <returns>
		///		Event.Done . . . . . . . OK
		///		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(Entities.Test test)
		{
			Elde.ControlBoardDev cBrd = StateMachine.ControlBoard;

			/// Operations running in more then one state
			checkUiOp = new Operations.CheckUIOp(true);

			IList<Event> e;                 /// Events from currently running operations
			Event retVal = Event.Done;

            ltrPerRefPulse = outPath.FlowMeter.LtrPerPulse;         /// [ltr/pulse], nominal flow in [m3/h]

            /// Notes:
            ///   float timeHr = volumeLtr / (1000.0f * targetFlow);
            ///   float timeSec = 3600.0f * timeHr;
            ///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
            int totalPulses = (int)(test.Volume / ltrPerRefPulse); 

            processDataLoggingOp = new TBF.BenchControl.Operations.ProcessDataLoggingOp(processDataLogger, this);
            
            int repetitionNr = 1;                 /// First test: repetitionNr=1				

			//====================================
			// Transition or SetRoute - Start
			//====================================
			switch (Transition(transitionStart, TransitionContext.TestStart))
			{
				case Event.Error:		{ retVal = Event.Error;		goto stopTest; }
				case Event.UiCmdStop:	{ retVal = Event.UiCmdStop; goto stopTest; }
			}

		//====================================
        loop:
			/// Start the test, initialize test results
			Bridge.OnTestSelected(this, new TestSelectedEventArgs(test, repetitionNr, inPath, benchPath, outPath, sensPath, totalPulses));
			Entities.TestResult tstRslt = new Entities.TestResult(test, repetitionNr, Entities.MetersKind.Single);


            if (!test.Emptying)		/// If condition met => skip measuring and force emptying
            {
				///
                /// Measure the weight and skip emptying if there is enough room in the tank
				///
				State.Create("ReferenceFlowmeterCalibration : Measuring the mass of water in the tank")
                    .AddOperation(checkUiOp)
                    .AddOperation(outPath.Balance.ReadMassOp(ref mass))
                    .EnterState();
                do
                {
                    e = StateMachine.WaitRunDevsRunOps();
                    if (e.Contains(Event.Error))	 { retVal = Event.Error;	 goto stopTest; }
                    if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
                }
                while (!e.Contains(Event.BalanceDone));

                float estimatedEndMass = mass.Val + test.Volume;
                if (estimatedEndMass < outPath.Balance.Capacity * Constants.TankFullFactor)
                {
                    goto set_flow;      /// Enough room in the tank -> skip emptying
                }
            }

			///
			/// Empty the water tank
			///
			switch (EmptyTheTank(outPath.EmptyTankValve, outPath.Balance))
			{
				case Event.Error:		{ retVal = Event.Error;		goto stopTest; }
				case Event.UiCmdStop:	{ retVal = Event.UiCmdStop; goto stopTest; }
			}

        set_flow:

            int flowSetTime0 = StateMachine.Time;
            float estFlowSetTime = 10.0f;

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Setting_the_flow);
            //------------------------------------------------
            foreach (var pump in PumpsWithFM) pump.TurnOnDfltPower();
            State.Create("ReferenceFlowmeterCalibration : Starting the pump")
                .AddOperation(checkUiOp)
				.AddOperation(cBrd.SetValvesOp(inPath.Pump, null))
                .EnterState();
            do
            {
                e = StateMachine.WaitRunDevsRunOps();

                int flowSetTime = StateMachine.Time - flowSetTime0;
				float progress = Formulas.TestProgress(flowSetTime, estFlowSetTime, test.TstTime);
                Bridge.OnTestProgress(this, GetTestProgressData(test, tstRslt, cBrd, flowSetTime, progress));

				if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
            }
            while (!e.Contains(Event.ValvesSet));

            //--------------------------------
			State.Create("ReferenceFlowmeterCalibration : Setting the flow")
				.AddOperation(checkUiOp)
				.AddOperation(outPath.RegulValve.SetFlowOp(outPath.FlowMeter, test.Qfrom, test.Qto, refFlow, 600))    /// timeout = 10 min.
				.EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();

                int flowSetTime = StateMachine.Time - flowSetTime0;
				float progress = Formulas.TestProgress(flowSetTime, estFlowSetTime, test.TstTime);
                Bridge.OnTestProgress(this, GetTestProgressData(test, tstRslt, cBrd, flowSetTime, progress));

				if (e.Contains(Event.OpArgumentError))	 { retVal = Event.OpArgumentError; goto stopTest; }
				if (e.Contains(Event.UiCmdStop))		 { retVal = Event.UiCmdStop; goto stopTest; }
				if (e.Contains(Event.RegulValveTimeOut)) { retVal = Event.Error;	 goto stopTest; }
                if (e.Contains(Event.Next))				 goto flow_set;
			}
			while (!e.Contains(Event.FlowReached));

        flow_set:
            int time = StateMachine.Time;
            float currentFlow = refFlow.Val;

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Measuring_the_weight);
            //------------------------------------------------
			State.Create("ReferenceFlowmeterCalibration : Measuring the start mass")
				.AddOperation(checkUiOp)
                .AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
                .AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
                .AddOperation(outPath.TempDiv.ReadTempOp(ref tempDiv))
                .AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
                .AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
                .AddOperation((StateMachine.Ambient != null)
                                ? StateMachine.Ambient.ReadAmbientOp(airTemperature, airPressure, airHumidity) : null)
                .AddOperation(outPath.Balance.ReadStableMassOp(ref startMass, 5))
                .AddOperation(cBrd.UpdateTankWeightOp())
                .AddOperation(processDataLoggingOp)
                .EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();
				if (e.Contains(Event.Error))	 { retVal = Event.Error;	 goto stopTest; }
				if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
			}
			while (!e.Contains(Event.BalanceDone));

            tstRslt.TimeStart = DateTime.Now;
            tstRslt.MassStartRaw = startMass.Val;
            mass.Val = startMass.Val;

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Test_in_progress);
            //------------------------------------------------
			State.Create("ReferenceFlowmeterCalibration : Starting the test")
				.AddOperation(checkUiOp)
                .AddOperation(cBrd.StartMeasurementOp(outPath.FlowMeter, totalPulses, Elde.TestMethods.Diverter | Elde.TestMethods.Synchro, (float)test.TolerRed))
				.EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();
				if (e.Contains(Event.Error))	 { retVal = Event.Error;	 goto stopTest; }
				if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
			}
			while (!e.Contains(Event.MeasurementStarted));

			/// Measurement loop - preparation
            readRegisters1 = new Operations.ReadMoreRegistersOp(sensPath.RegisterReaders, ref WMPulses, ref WMRefPulses);
            readRegisters2 = new Operations.ReadMoreRegistersOp(sensPath.RegisterReaders, ref WMPulses, ref WMRefPulses);
			queryEnd1 = cBrd.QueryMeasurementEndOp();
			queryEnd2 = cBrd.QueryMeasurementEndOp();

            bool firstTime = true;		/// To reset sums for averaging
			ResetAveragedData();

            /// Measurement loop - begin
			while (true)
			{
                //--------------------------------
                switch (ReadRegistersTempPressAmbient(null, true))
				{
					case Event.Error:		{ retVal = Event.Error;		goto stopTest; }
					case Event.UiCmdStop:	{ retVal = Event.UiCmdStop; goto stopTest; }
					case Event.MeasurementCompleted: goto test_completed;
				}

                if (firstTime)
                {
                    firstTime = false;                  /// Do the following only once
					tstRslt.TempInStart = tempIn.Val;
                    tstRslt.TempOutStart = tempOut.Val;
                    tstRslt.TempDivStart = tempDiv.Val;
                    tstRslt.PressInStart = pressIn.Val;
                    tstRslt.PressOutStart = pressOut.Val;
                }

                tstRslt.TempInEnd = tempIn.Val;
                tstRslt.TempOutEnd = tempOut.Val;
                tstRslt.TempDivEnd = tempDiv.Val;
                tstRslt.PressInEnd = pressIn.Val;
                tstRslt.PressOutEnd = pressOut.Val;
                tstRslt.MassEndRaw = mass.Val;

				AccumulateAveragedData();

                refFreq.Val = cBrd.ReferenceFreq;
                refFlow.Val = cBrd.ReferenceFlow;
                tstRslt.AmbientTempAve = airTemperature.Val;
                tstRslt.AmbientPressAve = airPressure.Val;
                tstRslt.AmbientHumiAve = airHumidity.Val;

				string logstr = string.Format("E={0} f={1} q={2}", cBrd.EtPulses(0), cBrd.ReferenceFreq,
											  cBrd.ReferenceFlow * outPath.FlowMeter.NominalFlow);
				for (int i = 0; i < Program.WMsCount; i++)
				{
					logstr += string.Format(" M{0}=({1},{2})", i + 1, WMRefPulses[i], WMPulses[i]);
				}
				log.Info(logstr);


                float progress = Formulas.TestProgress(cBrd.EtPulses(0), totalPulses, estFlowSetTime, test.TstTime);
                Bridge.OnTestProgress(this, GetTestProgressData(test, tstRslt, cBrd, cBrd.TTime, progress));
			}
            /// Measurement loop - end

        test_completed:

            //------------------------------------------------
            Bridge.OnActivity(this, Strings.Measuring_the_weight);
            //------------------------------------------------
			State.Create("ReferenceFlowmeterCalibration : Measuring the end mass")
				.AddOperation(checkUiOp)
                .AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
                .AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
                .AddOperation(outPath.TempDiv.ReadTempOp(ref tempDiv))
                .AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
                .AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
                .AddOperation((StateMachine.Ambient != null)
                                ? StateMachine.Ambient.ReadAmbientOp(airTemperature, airPressure, airHumidity) : null)
                .AddOperation(outPath.Balance.ReadStableMassOp(ref endMass, 5))
                .AddOperation(cBrd.UpdateTankWeightOp())
                .AddOperation(processDataLoggingOp)
                .EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();
				if (e.Contains(Event.Error))	 { retVal = Event.Error;	 goto stopTest; }
				if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
			}
			while (!e.Contains(Event.BalanceDone));
            ///
            tstRslt.MassEndRaw = endMass.Val;
            tstRslt.TimeEnd = DateTime.Now;

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

			///
			/// Populate TestResult data entity with data
			/// 
			tstRslt.TimeEnd = DateTime.Now;
			UpdateTestRsltWithAveragedData(tstRslt);
			tstRslt.MassStart = Formulas.CorrectedValue(tstRslt.MassStartRaw, outPath.Balance.Corrections);
			tstRslt.MassEnd = Formulas.CorrectedValue(tstRslt.MassEndRaw, outPath.Balance.Corrections);
			tstRslt.MassDiff = tstRslt.MassEnd - tstRslt.MassStart;
			tstRslt.DensityIn = Formulas.WaterDensityFromTemp(tstRslt.TempInAvrg);            /// [kg/m3]
			tstRslt.DensityOut = Formulas.WaterDensityFromTemp(tstRslt.TempOutAvrg);          /// [kg/m3]
			tstRslt.DensityDiv = Formulas.WaterDensityFromTemp(tstRslt.TempDivAvrg);          /// [kg/m3]
			tstRslt.Time = cBrd.TTime;                                                        /// [s] measurement time
			tstRslt.FlowMass = 3600.0f * tstRslt.MassDiff / tstRslt.Time;                     /// [kg/h]
			tstRslt.FlowVolume = 3600.0f * ltrPerRefPulse * cBrd.EtPulses(0) / tstRslt.Time;  /// [l/h]
			tstRslt.VolumeCTV = 1.00103f * 1000.0f * tstRslt.MassDiff / tstRslt.DensityOut;   /// [l] 1000.0f is because density is in [kg/m3]
			tstRslt.VolumeMaster = ltrPerRefPulse * cBrd.EtPulses(0);		                  /// [l] volume from the master flow meter
			tstRslt.PulsesMaster = cBrd.EtPulses(0);							              /// Pulses of the master flow meter (test total)
			tstRslt.ConstMaster = ltrPerRefPulse * tstRslt.VolumeCTV / tstRslt.VolumeMaster;  /// Corrected master pulses per liter
			if (tstRslt.VolumeCTV <= float.Epsilon)
			{
				tstRslt.ErrorMaster = 0.1f;
			}
			else
			{
				tstRslt.ErrorMaster = 100 * (tstRslt.VolumeMaster - tstRslt.VolumeCTV) / tstRslt.VolumeCTV;

                /// Update flowmeter constant with the measured one
                if (outPath.FlowMeter.Idx1 > 0 && outPath.FlowMeter.Idx1 <= ReferenceFlowmetersCount)
                {
                    LtrPerRefPulse[outPath.FlowMeter.Idx1 - 1] = tstRslt.ConstMaster;
                    log.InfoFormat("Updating LtrPerRefPulse[{0}] = {1}", outPath.FlowMeter.Idx1 - 1, tstRslt.ConstMaster);
                }
			}
			tstRslt.TimeDivStart0 = 0;
			tstRslt.TimeDivStart1 = 0;
			tstRslt.TimeDivStart2 = 0;
			tstRslt.TimeDivStart3 = 0;
			tstRslt.TimeDivStart4 = 0;
			tstRslt.TimeDivStart5 = 0;
			tstRslt.TimeDivEnd0 = 0;
			tstRslt.TimeDivEnd1 = 0;
			tstRslt.TimeDivEnd2 = 0;
			tstRslt.TimeDivEnd3 = 0;
			tstRslt.TimeDivEnd4 = 0;
			tstRslt.TimeDivEnd5 = 0;
            //for (int i = 0; i < Program.WMsCount; i++)
            //{
            //    if (sensPath.RegisterReaders[i] != null)
            //    {
            //        tstRslt.Meters[i].SerialNr = "wm" + (i + 1).ToString();
            //        tstRslt.Meters[i].VolumeStart = 0;                                      /// liter
            //        tstRslt.Meters[i].VolumeEnd = 0;                                        /// liter
            //        if (sensPath.RegisterReaders[i].PulsesPerLtr <= float.Epsilon) tstRslt.Meters[i].VolumeMeter = 0;
            //        else tstRslt.Meters[i].VolumeMeter = Convert.ToSingle(WMPulses[i]) / sensPath.RegisterReaders[i].PulsesPerLtr;
            //        tstRslt.Meters[i].VolumeRef = tstRslt.ConstMaster * WMRefPulses[i];      /// liter
            //        tstRslt.Meters[i].PulsesMeter = WMPulses[i];
            //        tstRslt.Meters[i].PulsesMaster = WMRefPulses[i];
            //        tstRslt.Meters[i].Time = cBrd.TTime;
            //        if (WMPulses[i] > 0 && tstRslt.Meters[i].VolumeRef > 0)
            //        {
            //            tstRslt.Meters[i].VolumeErrorPct =
            //                100 * (tstRslt.Meters[i].VolumeMeter - tstRslt.Meters[i].VolumeRef) / tstRslt.Meters[i].VolumeRef;
            //            /// %
            //        }
            //        else
            //        {
            //            tstRslt.Meters[i].VolumeErrorPct = -100;
            //        }
            //        tstRslt.Meters[i].Passed = (tstRslt.ErrLimLo <= tstRslt.Meters[i].VolumeErrorPct) && (tstRslt.Meters[i].VolumeErrorPct <= tstRslt.ErrLimHi);
            //    }
            //}
			/// Add data - end

			AddOrOverwriteResult(tstRslt);

			Bridge.OnTestCompleted(this, new TestCompletedEventArgs(tstRslt));

			/// Append the results to the CSV-file
			allResults.Info(TestResult2CsvLine(tstRslt, cBrd.EtPulses(0)));

			FluentCommon.SaveToDb(StateMachine.WtSession, tstRslt);


			if (++repetitionNr <= test.Repeats)
			{
				goto loop;
			}


		stopTest:

			///----------------------///
			///  Quit this sequence  ///
			///----------------------///

			State.Create("ReferenceFlowmeterCalibration : Stopping diverter, gate, etc.")
				.AddOperation(checkUiOp)
				.AddOperation(cBrd.StopPreviousOp())
				.EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();
				if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
			}
			while (!e.Contains(Event.PreviousStopped));

			/// Transition sequence at the end of test
			/// Prevent overwriting 'retVal' in case it was set to non-default value earlier
			switch (Transition(transitionStop, TransitionContext.TestEnd))
			{
				case Event.Error:	  { if (retVal == Event.Done) retVal = Event.Error;		break; }
				case Event.UiCmdStop: { if (retVal == Event.Done) retVal = Event.UiCmdStop; break; }
			}

			/// Create a list with one item 'retVal' (default is Event.Done) and return it
			IList<Event> retList = new List<Event>();
			retList.Add(retVal);
			return retList;
		}
    }
}