///
/// Copyright (c) 2013-2015 Sensus Metering Systems
///
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.LeakTest
{
	public class LeakTestSeq : Sequences.SequenceBase
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(LeakTestSeq));

		/// <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, LeakTestParams testParams)
		{
			Elde.ControlBoardDev cBrd = StateMachine.ControlBoard;

			IList<Event> e = new List<Event>();             /// Events from currently running operations
			Event retVal = Event.Done;
			checkUiOp = new Operations.CheckUIOp(true);		/// Runs in more then one state

			processDataLoggingOp = new TBF.BenchControl.Operations.ProcessDataLoggingOp(processDataLogger, this);


			// 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; }
			}

			/// Start the test, initialize test results
			Bridge.OnTestSelected(this, new TestSelectedEventArgs(test, 1, inPath, benchPath, outPath, sensPath, 0));
			Entities.TestResult tstRslt = new Entities.TestResult(test, 1, Entities.MetersKind.Single);

			//------------------------------------------------
			Bridge.OnActivity(this, Strings.Starting_the_pump);
			//------------------------------------------------
			if (inPath.Pump is GenericDevices.IPumpFM) (inPath.Pump as GenericDevices.IPumpFM).TurnOn(test.PumpPower);

			State.Create("LeakTest : Starting the pump")
				.AddOperation(checkUiOp)
				.AddOperation(cBrd.SetValvesOp(inPath.Pump, null))
				.AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
				.AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
				.AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
				.AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
				.EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();
				if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
			}
			while (e.Contains(Event.ValvesBusy));

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

			float pumpPower = test.PumpPower;
			int startTime = StateMachine.Time;

			while (true)
			{
				if (inPath.Pump is GenericDevices.IPumpFM) (inPath.Pump as GenericDevices.IPumpFM).TurnOn(pumpPower);

				State.Create("LeakTest : Setting the water pressure")
					.AddOperation(checkUiOp)
					.AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
					.AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
					.AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
					.AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
					.AddOperation(new Operations.TimerOp(5))
					.EnterState();
				do
				{
					e = StateMachine.WaitRunDevsRunOps();

					if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }
					if (e.Contains(Event.Next)) goto pressure_set;
				}
				while (e.Contains(Event.TimerBusy));

				UiBridge.Bridge.OnLog(this, string.Format("time = {0}, pump_power = {1}%, pressure_up = {2}kPa, pressure_down = {3}kPa\r\n",
										StateMachine.Time - startTime,
										pumpPower.ToString("F0"),
										pressIn.Val.ToString("F1"),
										pressIn.Val.ToString("F1")));

				float step = (pumpPower < 40.0f) ? 5.0f : ((pumpPower < 60.0f) ? 3.0f : ((pumpPower < 80.0f) ? 2.0f : 1.0f));

				if (pressOut.Val < testParams.PressureLo)
				{
					if (pumpPower == 100.0f) break;					/// Already at max. pump power -> Quit loop
					pumpPower = Math.Min(pumpPower + step, 100.0f);	/// Limit max. power to 100%
				}
				else if (pressOut.Val > testParams.PressureHi)
				{
					if (pumpPower == 0) break;						/// Already at min. pump power -> Quit loop
					pumpPower = Math.Max(pumpPower - step, 0);		/// Limit min. power to 0%
				}
				else
				{
					break;											/// Pressure is in the range -> Quit loop
				}
			}

		pressure_set:

			startTime = StateMachine.Time;
			int estimtdEndTime = startTime + testParams.DurationPMax;

			//------------------------------------------------
			Bridge.OnActivity(this, Strings.Test_in_progress);
			//------------------------------------------------
			State.Create("LeakTest : Maximum water pressure set")
				.AddOperation(checkUiOp)
				.AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
				.AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
				.AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
				.AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
				.AddOperation(new Operations.TimerOp(testParams.DurationPMax))
				.EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();

				tstRslt.TempInStart = tempIn.Val;
				tstRslt.TempOutStart = tempOut.Val;
				tstRslt.PressInStart = pressIn.Val;
				tstRslt.PressOutStart = pressOut.Val;

				if (e.Contains(Event.Error)) { retVal = Event.Error; goto stopTest; }
				if (e.Contains(Event.UiCmdStop)) { retVal = Event.UiCmdStop; goto stopTest; }

				int remainingTime = Math.Max(estimtdEndTime - StateMachine.Time, 0);
				Bridge.OnActivity(this, string.Format("{0} ... {1} s", Strings.Test_in_progress, remainingTime));
			}
			while (e.Contains(Event.TimerBusy));

		closing_valve:

			//------------------------------------------------
			Bridge.OnActivity(this, Strings.Closing_valve_Pump_off);
			//------------------------------------------------
			State.Create("LeakTest : Closing the valve")
				.AddOperation(checkUiOp)
				.AddOperation(cBrd.SetValvesOp(null, outPath.StartValve))
				.AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
				.AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
				.AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
				.AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
				.EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();

				tstRslt.TempInStart = tempIn.Val;
				tstRslt.TempOutStart = tempOut.Val;
				tstRslt.PressInStart = pressIn.Val;
				tstRslt.PressOutStart = pressOut.Val;

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

		valve_closed:

			if (inPath.Pump is GenericDevices.IPumpFM) (inPath.Pump as GenericDevices.IPumpFM).TurnOff();

			State.Create("LeakTest : Closing the valve")
				.AddOperation(checkUiOp)
				.AddOperation(cBrd.SetValvesOp(null, inPath.Pump))
				.AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
				.AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
				.AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
				.AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
				.EnterState();
			do
			{
				e = StateMachine.WaitRunDevsRunOps();

				tstRslt.TempInStart = tempIn.Val;
				tstRslt.TempOutStart = tempOut.Val;
				tstRslt.PressInStart = pressIn.Val;
				tstRslt.PressOutStart = pressOut.Val;

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


		pump_is_off:

			tstRslt.TimeStart = DateTime.Now;
			startTime = StateMachine.Time;
            estimtdEndTime = startTime + testParams.DurationLeak;
			ResetAveragedData();

			//------------------------------------------------
			Bridge.OnActivity(this, Strings.Test_in_progress);
			//------------------------------------------------
			State.Create("LeakTest : Starting the test")
				.AddOperation(checkUiOp)
				.AddOperation(benchPath.TempIn.ReadTempOp(ref tempIn))
				.AddOperation(benchPath.TempOut.ReadTempOp(ref tempOut))
				.AddOperation(benchPath.PressIn.ReadPressureOp(ref pressIn))
				.AddOperation(benchPath.PressOut.ReadPressureOp(ref pressOut))
				.AddOperation(new Operations.TimerOp(testParams.DurationLeak))
				.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; }

				int remainingTime = Math.Max(estimtdEndTime - StateMachine.Time, 0);
				Bridge.OnActivity(this, string.Format("{0} ... {1} s", Strings.Test_in_progress, remainingTime));

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

				AccumulateAveragedData();
			}
			while (e.Contains(Event.TimerBusy));

			/// Measurement loop - end

		test_completed:

			//------------------------------------------------
			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 (cycleBeginFormOpened)
			{
				cycleBeginFormOpened = false;
				if (WaitBeginFormClosed()) goto stopTest;
			}

			///
			/// Populate TestResult data entity with data
			/// 
			UpdateTestRsltWithAveragedData(tstRslt);

			tstRslt.TimeEnd = DateTime.Now;
			tstRslt.BatchNr = Program.LocalSettings.BatchNr;
			tstRslt.MassStart = 0;
			tstRslt.MassEnd = 0;
			tstRslt.MassDiff = 0;
			tstRslt.DensityIn = Formulas.WaterDensityFromTemp(tstRslt.TempInAvrg);	/// [kg/m3]
			tstRslt.DensityOut = Formulas.WaterDensityFromTemp(tstRslt.TempOutAvrg);/// [kg/m3]
			tstRslt.DensityDiv = 0;	                                                /// [kg/m3]
			tstRslt.Time = testParams.DurationPMax;									/// [s] measurement time
			tstRslt.FlowMass = 0;													/// [kg/h]
			tstRslt.FlowVolume = 0;													/// [l/h]
			tstRslt.PulsesMaster = 0;													/// Pulses of the master flow meter (test total)
			tstRslt.VolumeMaster = 0;													/// [l] volume from the master flow meter
			tstRslt.ConstMaster = 0;													/// Convert the flow to [m3/h]
			tstRslt.VolumeCTV = 0;													/// [l] 1000.0f is because density is in [kg/m3]
			tstRslt.ErrorMaster = 0;
			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 = (WaterMeters.Count > i) ? WaterMeters[i].SerialNr : string.Empty;
					tstRslt.Meters[i].VolumeStart = 0;
					tstRslt.Meters[i].VolumeEnd = 0;
					tstRslt.Meters[i].VolumeMeter = 0;
					tstRslt.Meters[i].VolumeRef = 0;
					tstRslt.Meters[i].PulsesMeter = 0;
					tstRslt.Meters[i].PulsesMaster = 0;
					tstRslt.Meters[i].Time = testParams.DurationPMax;
					tstRslt.Meters[i].VolumeErrorPct = 0;
					tstRslt.Meters[i].Passed = true;
				}
			}
			/// Add data - end

			AddOrOverwriteResult(tstRslt);

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

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


		stopTest:

			///
			/// Quit this sequence
			///
			State.Create("LeakTest : 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>(1);
			retList.Add(retVal);
			return retList;
		}
    }
}