///
/// Copyright (c) 2015-2020 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using log4net;
using Config.Entities;
using TBF.Rig;
using TBF.Rig.GenericDevices;

namespace TBF.Rig.DataEntry.Standard24
{
	public class EntryFormNoStartEnd : ComponentBase, IOperation, IDataEntry, IHasCycleBeginForm, IHasCycleEndForm
	{
        private static readonly ILog log = LogManager.GetLogger(typeof(EntryFormNoStartEnd));
        public override string ToString() { return string.Format("{0}({1})", ClassName, Cfg.ToString(-1)); }

		public bool UsesCameras() { return false; }

        readonly EntryFormCfg entryFormCfg;
		IRegReader[] regReaders;

		/// <summary>
		/// Properties set by the Begin, End and WMStates form
		/// </summary>
		bool[] disabled;				/// This array is shared between forms

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

		double[] wmEndState;
		public double WMEndState(int wmNr) { return (wmNr >= 0 && wmNr < wmEndState.Length) ? wmEndState[wmNr] : 0; }
        string[] wmEndStateStr;
        public string WMEndStateStr(int wmNr) { return (wmNr >= 0 && wmNr < wmEndStateStr.Length) ? wmEndStateStr[wmNr] : string.Empty; }


        bool isConditionOp;     /// true when the form is displayed inside transition sequence before a test
        System.Windows.Forms.Form modelessDlg;
        public bool Completed { get { return (modelessDlg is IHasCompleted) ? (modelessDlg as IHasCompleted).Completed : true; } }

		double refVolume;
		double errLimLo;
		double errLimHi;

		bool resultSaved;	    /// Set in Run() when results are saved

		IList<Results.Entities.WaterMeter> waterMeters;		/// Reference to ...ProcessData.BatchRslts.WaterMeters[]

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

		CurrentOp currentOp;


		public EntryFormNoStartEnd() { }

		public EntryFormNoStartEnd(Generic.IComponentCfg cfg)
			: base(cfg)
		{
			entryFormCfg = cfg as EntryFormCfg;
            log.Warn(this.ToString());
        }

        public override void Initialize()
        {
            disabled = new bool[TBF.Data.WMsCount];
            wmStartState = new double[TBF.Data.WMsCount];
            wmStartStateStr = new string[TBF.Data.WMsCount];
            wmEndState = new double[TBF.Data.WMsCount];
            wmEndStateStr = new string[TBF.Data.WMsCount];
            currentOp = CurrentOp.None;
        }


		/// <returns>Reference to the operation</returns>
		public IOperation ShowCycleBeginFormOp()
		{
			if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
            this.currentOp = CurrentOp.ShowFormAtCycleBeginning;
            this.isConditionOp = false;
            this.waterMeters = TBF.Rig.Sequences.ProcessData.BatchRslts.Batch.WaterMeters;
			return this;
		}

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

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

        /// <returns>Reference to the operation</returns>
        public IOperation ShowAdvancedTestStartFormOp(IRegReader[] regReaders, IList<Results.Entities.WaterMeter> waterMeters, bool isConditionOp = false)
        {
            if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
            this.currentOp = CurrentOp.EnterAdvancedTestStartStates;
            this.isConditionOp = isConditionOp;
            this.regReaders = regReaders;
            this.waterMeters = waterMeters;
            return this;
        }

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

        delegate void EntryFormDlgt(EntryFormNoStartEnd myRef);
        /// 
        void OpenBeginningDlg(EntryFormNoStartEnd myRef)
        {
            myRef.modelessDlg = new CycleBeginningForm(TBF.Data.WMsCount);
            modelessDlg.Show();
        }
        /// 
        void OpenEndDlg(EntryFormNoStartEnd myRef)
        {
			myRef.modelessDlg = new CycleEndForm(TBF.Data.WMsCount, TBF.Data.LineSize);
            modelessDlg.Show();
        }
		///
		void OpenTestStartStatesDlg(EntryFormNoStartEnd myRef)
		{
			myRef.modelessDlg = new TestStartEndForm(TBF.Data.WMsCount, myRef.regReaders, myRef.disabled);
			modelessDlg.Show();
		}
        ///
        void OpenAdvancedTestStartStatesDlg(EntryFormNoStartEnd myRef)
        {
            if (wmEndStateStr.Length == waterMeters.Count)
            {
                for (int i = 0; i < waterMeters.Count; i++) wmEndStateStr[i] = waterMeters[i].EndState;
            }
            myRef.modelessDlg = new TestStartEndForm(TBF.Data.WMsCount, myRef.regReaders, wmEndStateStr, myRef.disabled);
            modelessDlg.Show();
        }
        ///
		void OpenTestEndStatesDlg(EntryFormNoStartEnd myRef)
		{
			myRef.modelessDlg = new TestStartEndForm(TBF.Data.WMsCount, myRef.regReaders, wmStartStateStr, disabled, refVolume, errLimLo, errLimHi);
			modelessDlg.Show();
		}

		/// <summary>Start this operation</summary>
		public void Start()
		{
			resultSaved = false;
			switch (currentOp)
            {
                case CurrentOp.ShowFormAtCycleBeginning:
					if (!entryFormCfg.EnterSerialNrsAtTheEnd)
					{
						Program.MainWnd.Invoke(new EntryFormDlgt(OpenBeginningDlg), this);
					}
                    break;
                case CurrentOp.ShowFormAtCycleEnd:
					if (entryFormCfg.EnterSerialNrsAtTheEnd)
					{
						Program.MainWnd.Invoke(new EntryFormDlgt(OpenBeginningDlg), this);
					}
					else if (entryFormCfg.ShowCycleEndForm)
					{
						Program.MainWnd.Invoke(new EntryFormDlgt(OpenEndDlg), this);
					}
                    break;
				case CurrentOp.EnterTestStartStates:
					Program.MainWnd.Invoke(new EntryFormDlgt(OpenTestStartStatesDlg), this);
					break;
                case CurrentOp.EnterAdvancedTestStartStates:
                    Program.MainWnd.Invoke(new EntryFormDlgt(OpenAdvancedTestStartStatesDlg), 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 isConditionOp ? Event.ConditionNotMet : Event.ModelessFormIsOpen;
			}

			if (!resultSaved)		/// This is to save the result only once
			{
				if ((!entryFormCfg.EnterSerialNrsAtTheEnd && currentOp == CurrentOp.ShowFormAtCycleBeginning) ||
					 (entryFormCfg.EnterSerialNrsAtTheEnd && currentOp == CurrentOp.ShowFormAtCycleEnd))
				{
					CycleBeginningForm dlg = (modelessDlg as CycleBeginningForm);
					if (dlg != null)
					{
					    for (int i = 0; i < Math.Min(dlg.WaterMetersCount, waterMeters.Count); i++)
					    {
						    if (waterMeters[i] != null)
						    {
                                waterMeters[i].Disabled = disabled[i] = dlg.Disabled[i];
                                waterMeters[i].SerialNr = dlg.SNText[i];
                                if (dlg.PurchaseOrder != null) waterMeters[i].PurchaseOrder = dlg.PurchaseOrder;
                            }
					    }
				    }
				}
				else if (entryFormCfg.ShowCycleEndForm && 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
                            wmEndStateStr[i] = waterMeters[i].EndState = (dlg != null) ? dlg.EndStateText[i] : string.Empty;
                        }
                    }
				}
                else if (modelessDlg is TestStartEndForm &&
                         (currentOp == CurrentOp.EnterTestStartStates || currentOp == CurrentOp.EnterAdvancedTestStartStates))
				{
                    /// Fixed start test - start
					TestStartEndForm dlg = (modelessDlg as TestStartEndForm);
                    if (dlg != null)
                    {
                        for (int i = 0; i < dlg.WaterMetersCount; i++)
                        {
							if (!(((i < disabled.Length) && disabled[i]) || ((i < regReaders.Length) && (regReaders[i] == null))))
							{
								wmStartState[i] = dlg.WMStartState[i];
								wmStartStateStr[i] = dlg.WMStartStateStr[i];
							}
                        }
                    }
                }
                else if (modelessDlg is TestStartEndForm && currentOp == CurrentOp.EnterTestEndStates)
                {
                    /// Fixed start test - end
                    TestStartEndForm dlg = (modelessDlg as TestStartEndForm);
                    if (dlg != null)
                    {
                        for (int i = 0; i < dlg.WaterMetersCount; i++)
                        {
							if (!(((i < disabled.Length) && disabled[i]) || ((i < regReaders.Length) && (regReaders[i] == null))))
							{
								wmEndState[i] = dlg.WMEndState[i];
                                waterMeters[i].EndState = wmEndStateStr[i] = dlg.WMEndStateStr[i];
                            }
                        }
                    }
                }
                resultSaved = true;
				modelessDlg = null;
			}

            return isConditionOp ? Event.ConditionMet : 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;
		}
	}
}