///
/// Copyright (c) 2013-2015 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using log4net;
using TBF.BenchControl;
using TBF.BenchControl.GenericDevices;

namespace TBF.BenchControl.DataEntry.Combined
{
    public class EntryForm : ComponentBase, IOperation, IDataEntry, IHasCycleBeginForm, IHasCycleEndForm
	{
        private static readonly ILog log = LogManager.GetLogger(typeof(EntryForm));
        public override string ToString() { return string.Format("DataEntry.Combined({0})", Cfg.ToString(1)); }

        readonly EntryFormCfg entryFormCfg;

		/// <summary>
		/// Properties set by the Begin and the End form
		/// </summary>
		string purchaseOrder;
		public string PurchaseOrder { get { return purchaseOrder; } }

		string[] serialNr;
		public string SerialNr(int wmNr) { return (wmNr >= 0 && wmNr < serialNr.Length) ? serialNr[wmNr] : string.Empty; }

		bool[] disabled;
		public bool Disabled(int wmNr) { return (wmNr >= 0 && wmNr < disabled.Length) ? disabled[wmNr] : false; }

		string[] wmCycleEndState;
		public string WMCycleEndState(int wmNr) { return (wmNr >= 0 && wmNr < wmCycleEndState.Length) ? wmCycleEndState[wmNr] : string.Empty; }

		float[] wmStartState;
		public float WMStartState(int wmNr) { return (wmNr >= 0 && wmNr < wmStartState.Length) ? wmStartState[wmNr] : 0; }

		float[] wmEndState;
		public float WMEndState(int wmNr) { return (wmNr >= 0 && wmNr < wmEndState.Length) ? wmEndState[wmNr] : 0; }

		string[] wmStartStateStr;


        System.Windows.Forms.Form modelessDlg;

		float refVolume;
		float errLimLo;
		float errLimHi;

		bool resultSaved;

		IList<IWaterMeter> waterMeters;

		public enum CurrentOp
		{
			None,
			ShowFormAtCycleBeginning,
			ShowFormAtCycleEnd,
			EnterTestStartStates,
			EnterTestEndStates,
		}

		CurrentOp currentOp;


		public EntryForm()
		{
		}

		public EntryForm(EntryFormCfg cfg)
            : base(cfg)
        {
			serialNr = new string[Program.CompoundWMsCount * 2];
			disabled = new bool[Program.CompoundWMsCount];
			wmStartState = new float[Program.CompoundWMsCount * 2];
			wmStartStateStr = new string[Program.CompoundWMsCount * 2];
			wmEndState = new float[Program.CompoundWMsCount * 2];
			wmCycleEndState = new string[Program.CompoundWMsCount * 2];

			entryFormCfg = cfg;
            currentOp = CurrentOp.None;
            log.Debug(this.ToString());
        }

		/// <returns>Reference to the operation</returns>
		public IOperation ShowCycleBeginFormOp(IList<IWaterMeter> waterMeters)
		{
			if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
			currentOp = CurrentOp.ShowFormAtCycleBeginning;
			this.waterMeters = waterMeters;
			return this;
		}

		/// <returns>Reference to the operation</returns>
		public IOperation ShowCycleEndFormOp(IList<IWaterMeter> waterMeters)
		{
			if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
			currentOp = CurrentOp.ShowFormAtCycleEnd;
			this.waterMeters = waterMeters;
			return this;
		}

		/// <returns>Reference to the operation</returns>
		public IOperation ShowTestStartFormOp()
		{
			if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
			currentOp = CurrentOp.EnterTestStartStates;
			return this;
		}

		/// <returns>Reference to the operation</returns>
		public IOperation ShowTestEndFormOp(float refVolume, float errLimLo, float errLimHi)
		{
			if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
			currentOp = CurrentOp.EnterTestEndStates;
			this.refVolume = refVolume;
			this.errLimLo = errLimLo;
			this.errLimHi = errLimHi;
			return this;
		}

        delegate void EntryFormDlgt(EntryForm myRef);
        /// 
        void OpenBeginningDlg(EntryForm myRef)
        {
			myRef.modelessDlg = new CycleBeginningForm(Program.CompoundWMsCount);
            modelessDlg.Show();
        }
        /// 
        void OpenEndDlg(EntryForm myRef)
        {
			CycleEndForm endForm = new CycleEndForm();
			myRef.modelessDlg = endForm;
            modelessDlg.Show();
        }
		///
		void OpenTestStartStatesDlg(EntryForm myRef)
		{
			myRef.modelessDlg = new TestStartEndForm(Program.CompoundWMsCount, disabled);
			modelessDlg.Show();
		}
		///
		void OpenTestEndStatesDlg(EntryForm myRef)
		{
			string[] mainStartSateStr = new string[Program.CompoundWMsCount];
			string[] auxStartSateStr = new string[Program.CompoundWMsCount];
			for (int i = 0; i < Program.CompoundWMsCount; i++)
			{
				mainStartSateStr[i] = wmStartStateStr[2 * i];
				auxStartSateStr[i] = wmStartStateStr[2 * i + 1];
			}
			myRef.modelessDlg = new TestStartEndForm(Program.CompoundWMsCount, mainStartSateStr, auxStartSateStr, disabled, refVolume, errLimLo, errLimHi);
			modelessDlg.Show();
		}

		/// <summary>Start this operation</summary>
		public void Start()
		{
			resultSaved = false;
			switch (currentOp)
            {
				case CurrentOp.ShowFormAtCycleBeginning:
					Program.MainWnd.Invoke(new EntryFormDlgt(OpenBeginningDlg), this);
					break;
				case CurrentOp.ShowFormAtCycleEnd:
					if (entryFormCfg.ShowCycleEndForm)
					{
						Program.MainWnd.Invoke(new EntryFormDlgt(OpenEndDlg), this);
					}
					break;
				case CurrentOp.EnterTestStartStates:
					Program.MainWnd.Invoke(new EntryFormDlgt(OpenTestStartStatesDlg), this);
					break;
				case CurrentOp.EnterTestEndStates:
					Program.MainWnd.Invoke(new EntryFormDlgt(OpenTestEndStatesDlg), this);
					break;
			}
		}

		/// <summary>Run this operation</summary>
		/// <returns>Event.ResultsPrinted</returns>
		public Event Run()
		{
			if ((modelessDlg is IHasCompleted) && !(modelessDlg as IHasCompleted).Completed)
			{
				return Event.ModelessFormIsOpen;
			}

			if (!resultSaved)		/// This is to save the result only once
			{
				if (currentOp == CurrentOp.ShowFormAtCycleBeginning)
				{
					CycleBeginningForm dlg = (modelessDlg as CycleBeginningForm);

					if (dlg != null)
					{
						purchaseOrder = dlg.PurchaseOrder;

						for (int i = 0; i < Math.Min(dlg.WaterMetersCount, waterMeters.Count / 2); i++)
						{
							if (waterMeters[i] != null)
							{
								serialNr[2 * i] = waterMeters[2 * i].SerialNr = dlg.MainSNText[i];
								serialNr[2 * i + 1] = waterMeters[2 * i + 1].SerialNr = dlg.AuxSNText[i];
								disabled[i] = waterMeters[i].Disabled = dlg.Disabled[i];
							}
						}
					}
				}
				else if (currentOp == CurrentOp.ShowFormAtCycleEnd)
				{
					//CycleEndForm dlg = (modelessDlg as CycleEndForm);
					//int count = waterMeters.Count;
					//if ((dlg != null) && (count > dlg.WaterMetersCount)) count = dlg.WaterMetersCount;

					//for (int i = 0; i < count; i++)
					//{
					//    if (waterMeters[i] != null)
					//    {
					//        /// In case entryFormCfg.ShowCycleEndForm == false dlg would be null, values would be string.Empty
					//        wmCycleEndState[i] = waterMeters[i].EndState = (dlg != null) ? dlg.EndStateText[i] : string.Empty;
					//    }
					//}
				}
				else if (modelessDlg is TestStartEndForm && currentOp == CurrentOp.EnterTestStartStates)
				{
					/// Fixed start test - start
					TestStartEndForm dlg = (modelessDlg as TestStartEndForm);

					for (int i = 0; i < dlg.WaterMetersCount; i++)
					{
						wmStartState[2 * i] = dlg.MainStartState[i];
						wmStartStateStr[2 * i] = dlg.MainStartStateStr[i];
						wmStartState[2 * i + 1] = dlg.AuxStartState[i];
						wmStartStateStr[2 * i + 1] = dlg.AuxStartStateStr[i];
					}
				}
				else if (modelessDlg is TestStartEndForm && currentOp == CurrentOp.EnterTestEndStates)
				{
					/// Fixed start test - end
					TestStartEndForm dlg = (modelessDlg as TestStartEndForm);

					for (int i = 0; i < dlg.WaterMetersCount; i++)
					{
						wmEndState[2 * i] = dlg.MainEndState[i];
						wmEndState[2 * i + 1] = dlg.AuxEndState[i];
					}
				}
				resultSaved = true;
				modelessDlg = null;
			}

			return Event.ModelessFormClosed;		/// Form closed
		}

		/// <summary>Stop this operation</summary>
		public void Stop()
		{
			if (modelessDlg is IHasCompleted)
			{
				UiBridge.Bridge.OnCloseModelessForm(this, null);
				modelessDlg = null;
			}
			currentOp = CurrentOp.None;
		}

        /// <summary>
        /// Updates test results with the information collected in watermeters.
        /// </summary>
        /// <param name="waterMeters">Watermetes with information entered in the forms</param>
		/// <param name="testResults">Test results to be updated with the information</param>
		public void UpdateTestResults(IList<IWaterMeter> waterMeters, IList<Entities.TestResult> testResults)
        {
			foreach (var testRslt in testResults)
            {
				if (testRslt.MetersKind != Entities.MetersKind.Combined) continue;

                /// Todo: Generalize !!! Now implemented for Munich = one combined meter.
				//testRslt.Meters[0].SerialNr = waterMeters[0].SerialNr;
				//testRslt.Meters[0].EndState = waterMeters[0].EndState;
				//testRslt.Meters[1].SerialNr = waterMeters[1].SerialNr;
				//testRslt.Meters[1].EndState = waterMeters[1].EndState;

				for (int i = 0; i < testRslt.Meters.Count; i++)
				{
					testRslt.Meters[i].SerialNr = SerialNr(i);
					testRslt.Meters[i].Disabled = Disabled(i);
					testRslt.Meters[i].EndState = WMCycleEndState(i);
				}
			}
        }
    }
}