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

namespace TBF.Rig.DataEntry.Combined
{
	public class EntryForm : ComponentBase, IOperation, IDataEntry, IHasCycleBeginForm, IHasCycleEndForm, IHasWMStatesForm
	{
        private static readonly ILog log = LogManager.GetLogger(typeof(EntryForm));
        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 and the End form
		/// </summary>
		bool[] disabled;				/// This array is shared between forms

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

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

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

		string[] wmStartStateStr;


        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,
			EnterTestEndStates,
		}

		CurrentOp currentOp;


		public EntryForm() { }

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

        public override void Initialize()
        {
            disabled = new bool[TBF.Data.CompoundWMsCount];
            wmStartState = new double[TBF.Data.CompoundWMsCount * 2];
            wmStartStateStr = new string[TBF.Data.CompoundWMsCount * 2];
            wmEndState = new double[TBF.Data.CompoundWMsCount * 2];
            wmCycleEndState = new string[TBF.Data.CompoundWMsCount * 2];
            currentOp = CurrentOp.None;
        }


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

        /// <returns>null (not implemented)</returns>
        public IOperation ShowAdvancedTestStartFormOp(IRegReader[] regReaders, IList<Results.Entities.WaterMeter> waterMeters, bool isCondOp) { return null; }
        public IOperation ShowTestCollectFormOp(IRegReader[] regReaders, double volumeRef, double errLimLo, double errLimHi) { return null; }

		/// <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");
			currentOp = CurrentOp.EnterTestEndStates;
			this.regReaders = regReaders;
			this.refVolume = refVolume;
			this.errLimLo = errLimLo;
			this.errLimHi = errLimHi;
			return this;
		}

        delegate void EntryFormDlgt(EntryForm myRef);
        /// 
        void OpenBeginningDlg(EntryForm myRef)
        {
            myRef.modelessDlg = new CycleBeginningForm(TBF.Data.CompoundWMsCount, myRef.entryFormCfg.RemarkEnabled);
            modelessDlg.Show();
        }
        /// 
        void OpenEndDlg(EntryForm myRef)
        {
			CycleEndForm endForm = new CycleEndForm();
			myRef.modelessDlg = endForm;
            modelessDlg.Show();
        }
		///
		void OpenTestStartStatesDlg(EntryForm myRef)
		{
			myRef.modelessDlg = new TestStartEndForm(TBF.Data.CompoundWMsCount, myRef.regReaders, myRef.disabled);
			modelessDlg.Show();
		}
		///
		void OpenTestEndStatesDlg(EntryForm myRef)
		{
			string[] mainStartStateStr = new string[TBF.Data.CompoundWMsCount];
			string[] auxStartStateStr  = new string[TBF.Data.CompoundWMsCount];
			for (int i = 0; i < TBF.Data.CompoundWMsCount; i++)
			{
				mainStartStateStr[i] = wmStartStateStr[2 * i];
				auxStartStateStr[i]  = wmStartStateStr[2 * i + 1];
			}
			myRef.modelessDlg = new TestStartEndForm(TBF.Data.CompoundWMsCount, myRef.regReaders, mainStartStateStr, auxStartStateStr, 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)
					{
						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.MainSNText[i];
								waterMeters[i].SerialNrAux = dlg.AuxSNText[i];
                                if (dlg.RemarksEnabled) waterMeters[i].Remark = dlg.Remark[i];
                                if (dlg.PurchaseOrder != null) waterMeters[i].PurchaseOrder = dlg.PurchaseOrder;
                            }
						}
					}
				}
				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;
		}
	}
}