///
/// Copyright (c) 2016 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using log4net;
using TBF.Rig.GenericDevices;
using TBF.Resources;

namespace TBF.Rig.DataEntry.HeatMeters6
{
	public partial class TestStartEndForm : Form, GenericDevices.IHasCompleted
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(TestStartEndForm));

		// Set to 'true' when the form closes
		public bool Completed { get { return completed; } }
		bool completed;

        readonly EntryFormCfg entryFormCfg;

		/// <summary> Number of text boxes for serial numbers </summary>
        public readonly int WaterMetersCount;
		readonly IRegReader[] regReaders;
		readonly bool[] disabled;

		// To be retrieved after the form closes
		public double[] WMStartState;
		public readonly string[] WMStartStateStr;
        public double[] WMEndState;

		// To be retrieved after the form closes
		public double[] EnergyStartState;
		public readonly string[] EnergyStartStateStr;
		public double[] EnergyEndState;

		bool endStates;			    /// false=start states, true=end states
		
        double refVolume;
		double warningLimLo;	    /// limit to display exclamation mark, typically 2x errLimLo
		double warningLimHi;	    /// limit to display exclamation mark, typically 2x errLimHi

        double refEnergy;
        double energyWarningLimLo;	/// limit to display exclamation mark, typically 2x energyErrLimLo
        double energyWarningLimHi;	/// limit to display exclamation mark, typically 2x energyErrLimHi

		int TextBoxesCount;
		///
		Label[] labels;
		TextBox[] startTextBoxes;
		TextBox[] endTextBoxes;
		Label[] energyLabels;
		TextBox[] energyStartTextBoxes;
		TextBox[] energyEndTextBoxes;
		IList<TextBox> enabledTextBoxes;

		/// <summary>
		/// Parameterless constructor initializing common part for start and endstate form
		/// </summary>
		public TestStartEndForm()
		{
			InitializeComponent();
			ControlBox = false;

			TextBoxesCount = 6;

			labels = new Label[] { label1,  label2,  label3,  label4,  label5,  label6 };

			startTextBoxes = new TextBox[]
				{
					startTextBox1, startTextBox2, startTextBox3, startTextBox4, startTextBox5, startTextBox6,
				};
			endTextBoxes = new TextBox[]
				{
					endTextBox1, endTextBox2, endTextBox3, endTextBox4, endTextBox5, endTextBox6,
				};

			energyLabels = new Label[] { label13, label14, label15, label16, label17, label18 };

			energyStartTextBoxes = new TextBox[]
				{
					startTextBox13, startTextBox14, startTextBox15, startTextBox16, startTextBox17, startTextBox18,
				};
			energyEndTextBoxes = new TextBox[]
				{
					endTextBox13, endTextBox14, endTextBox15, endTextBox16, endTextBox17, endTextBox18,
				};

			enabledTextBoxes = new List<TextBox>();

			completed = false;
			StartForceCloseHandler();
		}

		/// <summary>
		/// Constructor to fill in start states
		/// </summary>
		/// <param name="waterMetersCount">Number of water meters</param>
		/// <param name="disabled">Information from CycleBeginningForm about availability of water meters</param>
		public TestStartEndForm(EntryFormCfg cfg, int waterMetersCount, IRegReader[] regReaders, bool[] disabled)
			: this()
		{
			endStates = false;

            entryFormCfg = cfg;

			this.WaterMetersCount = waterMetersCount;
			this.regReaders = regReaders;
			this.disabled = disabled;

			ShuffleTextBoxes();

			WMStartState = new double[waterMetersCount];
			WMStartStateStr = new string[waterMetersCount];

			EnergyStartState = new double[waterMetersCount];
			EnergyStartStateStr = new string[waterMetersCount];
		}

        /// <summary>
        /// Constructor to fill in end states
        /// </summary>
		/// <param name="waterMetersCount">Number of water meters</param>
		/// <param name="wmStartStateStr">Information entered on test start</param>
		/// <param name="disabled">Information from CycleBeginningForm about availability of water meters</param>
		/// <param name="refVolume">Reference volume, it is used to verify the end state, show/hide exclamation if necessary</param>
		/// <param name="errLimLo">Error limit low, it is used to verify the end state, show/hide exclamation if necessary</param>
		/// <param name="errLimHi">Error limit high, it is used to verify the end state, show/hide exclamation if necessary</param>
		public TestStartEndForm(EntryFormCfg cfg, int waterMetersCount, IRegReader[] regReaders, string[] wmStartStateStr, string[] energyStartStateStr,
                                bool[] disabled, double refVolume, double errLimLo, double errLimHi,
                                double refEnergy, double energyErrLimLo, double energyErrLimHi)
			: this()
        {
			endStates = true;

            entryFormCfg = cfg;

			this.WaterMetersCount = waterMetersCount;
			this.regReaders = regReaders;

			if (wmStartStateStr == null || wmStartStateStr.Length != waterMetersCount)
				throw (new Exception("Invalid 'wmStartStateStr' argument"));
			this.WMStartStateStr = wmStartStateStr;

            if (energyStartStateStr == null || energyStartStateStr.Length != waterMetersCount)
                throw (new Exception("Invalid 'energyStartStateStr' argument"));
            this.EnergyStartStateStr = energyStartStateStr;

            this.disabled = disabled;

            this.refVolume = refVolume;
            this.warningLimLo = 2 * errLimLo;
            this.warningLimHi = 2 * errLimHi;

            this.refEnergy = refEnergy;
            this.energyWarningLimLo = 2 * energyErrLimLo;
            this.energyWarningLimHi = 2 * energyErrLimHi;

			ShuffleTextBoxes();

            WMEndState = new double[waterMetersCount];
			EnergyEndState = new double[waterMetersCount];
		}

		/// <summary>
		/// Make sure the layout of labels/text boxes on the screen
		/// corresponds to the layout of watermeters of the test bench.
		/// </summary>
		void ShuffleTextBoxes()
		{
			if (TBF.Data.HeatMetersCount < TextBoxesCount)
			{
                int nrLines = Math.Max(1, TBF.Data.HeatMetersCount / TBF.Data.LineSize);
                int gap = (TextBoxesCount - TBF.Data.HeatMetersCount) / nrLines;

				int dest = 0;
				for (int l = 0; l < nrLines; l++)
				{
					for (int i = 0; i < TBF.Data.LineSize; i++)
					{
						labels[dest] = labels[l * TBF.Data.LineSize + l * gap + i];
						startTextBoxes[dest] = startTextBoxes[l * TBF.Data.LineSize + l * gap + i];
						endTextBoxes[dest] = endTextBoxes[l * TBF.Data.LineSize + l * gap + i];
						energyLabels[dest] = energyLabels[l * TBF.Data.LineSize + l * gap + i];
						energyStartTextBoxes[dest] = energyStartTextBoxes[l * TBF.Data.LineSize + l * gap + i];
						energyEndTextBoxes[dest] = energyEndTextBoxes[l * TBF.Data.LineSize + l * gap + i];
						dest++;
					}
				}
                TextBoxesCount = TBF.Data.HeatMetersCount;
			}
		}

		private void TestStartEndForm_Load(object sender, EventArgs e)
		{
            Localize();

            for (Common.Unit units = 0; units < Common.Unit.Count; units++)
            {
                if (Common.Units.IsEnergy(units)) unitsComboBox.Items.Add(units.ToString());
            }
            unitsComboBox.Text = entryFormCfg.Units.ToString();

            //Height = 115 + 90 * WaterMetersCount;

			for (int i = 0; i < TextBoxesCount; i++)
			{
				if (i < WaterMetersCount)
				{
					labels[i].Visible = startTextBoxes[i].Visible = endTextBoxes[i].Visible = true;
                    energyLabels[i].Visible = energyStartTextBoxes[i].Visible = energyEndTextBoxes[i].Visible = true;
                }
			}

			if (endStates)
			{
				for (int i = 0; i < TextBoxesCount; i++)
				{
                    if (WMStartStateStr != null && i < WMStartStateStr.Length)
                    {
                        startTextBoxes[i].Text = WMStartStateStr[i];
                    }
					if (EnergyStartStateStr != null && i < EnergyStartStateStr.Length)
                    {
                        energyStartTextBoxes[i].Text = EnergyStartStateStr[i];
                    }

					if (disabled != null && i < disabled.Length && disabled[i])
					{
						endTextBoxes[i].Enabled = false;
                        energyEndTextBoxes[i].Enabled = false;
                    }
					else
					{
						endTextBoxes[i].Enabled = true;
                        energyEndTextBoxes[i].Enabled = true;
                        enabledTextBoxes.Add(endTextBoxes[i]);
                        enabledTextBoxes.Add(energyEndTextBoxes[i]);
                    }
				}
			}
			else
			{
				for (int i = 0; i < TextBoxesCount; i++)
				{
					if (disabled != null && i < disabled.Length && disabled[i])
					{
						startTextBoxes[i].Enabled = false;
                        energyStartTextBoxes[i].Enabled = false;
                    }
					else
					{
						startTextBoxes[i].Enabled = true;
                        energyStartTextBoxes[i].Enabled = true;
                        enabledTextBoxes.Add(startTextBoxes[i]);
                        enabledTextBoxes.Add(energyStartTextBoxes[i]);
                    }
				}
			}
		}

		void Localize()
		{
			Text = Strings.Water_Meter_States;
			for (int i = 0; i < TextBoxesCount; i++)
			{
				labels[i].Text = string.Format("{0} {1} [l]", Strings.Volume + " ", i + 1);
                energyLabels[i].Text = string.Format("{0} {1}", Strings.Energy + " ", i + 1);
            }
			startLabel.Text = Strings.Start;
			endLabel.Text = Strings.End;
			okButton.Text = Strings.OkBtnText;
		}

		private void unitsComboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			for (Common.Unit u = 0; u < Common.Unit.Count; u++)
			{
				if (u.ToString() == unitsComboBox.Text)
				{
					entryFormCfg.Units = u;
					break;
				}
			}
		}

		private void okButton_Click(object sender, EventArgs eArgs)
		{
            try
            {
				if (endStates)
				{
					for (int i = 0; i < Math.Min(WaterMetersCount, TextBoxesCount); i++)
					{
						if (endTextBoxes[i].Visible && endTextBoxes[i].Enabled)
						{
							WMEndState[i] = Utils.ParseUDouble(endTextBoxes[i].Text);
                            EnergyEndState[i] = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(energyEndTextBoxes[i].Text));
						}
					}
				}
				else
				{
					for (int i = 0; i < Math.Min(WaterMetersCount, TextBoxesCount); i++)
					{
						if (startTextBoxes[i].Visible && startTextBoxes[i].Enabled)
						{
							WMStartStateStr[i] = startTextBoxes[i].Text;
							WMStartState[i] = Utils.ParseUDouble(startTextBoxes[i].Text);
							EnergyStartStateStr[i] = energyStartTextBoxes[i].Text;
                            EnergyStartState[i] = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(energyStartTextBoxes[i].Text));
						}
					}
				}
			}
            catch(Exception e)
            {
				log.ErrorFormat("Exception: {0}", e.Message);
                return;
            }

			completed = true;
			Close();
		}

		#region Forced close handling

		public void StartForceCloseHandler()
		{
			UiBridge.Bridge.CloseModelessFormHandler += delegate(object sender, EventArgs args)
			{
				if (InvokeRequired) { Invoke(new EventHandler<EventArgs>(OnForceClose), sender, args); }
				else OnForceClose(sender, args);
			};
		}

		void OnForceClose(object sender, EventArgs args)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}

		#endregion

		/// <summary>
		/// Calculate the approximate error and verify whether it is within limits.
		/// Make an exclamation mark visible if out of range.
		/// Similar event handler is implemented for all endTextBoxes (1..24).
		/// </summary>
		private void endTextBox1_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Utils.ParseUDouble(endTextBox1.Text);
				double startState = Utils.ParseUDouble(startTextBox1.Text);
				err = 100.0 * (endState - startState - refVolume) / refVolume;
			}
			catch { };
			exclamation1.Visible = (err < warningLimLo) || (warningLimHi < err);
		}
		private void endTextBox2_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Utils.ParseUDouble(endTextBox2.Text);
				double startState = Utils.ParseUDouble(startTextBox2.Text);
				err = 100.0 * (endState - startState - refVolume) / refVolume;
			}
			catch { err = 1000.0f; };
			exclamation2.Visible = (err < warningLimLo) || (warningLimHi < err);
		}
		private void endTextBox3_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Utils.ParseUDouble(endTextBox3.Text);
				double startState = Utils.ParseUDouble(startTextBox3.Text);
				err = 100.0 * (endState - startState - refVolume) / refVolume;
			}
			catch { err = 1000.0f; };
			exclamation3.Visible = (err < warningLimLo) || (warningLimHi < err);
		}
		private void endTextBox4_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Utils.ParseUDouble(endTextBox4.Text);
				double startState = Utils.ParseUDouble(startTextBox4.Text);
				err = 100.0 * (endState - startState - refVolume) / refVolume;
			}
			catch { err = 1000.0f; };
			exclamation4.Visible = (err < warningLimLo) || (warningLimHi < err);
		}
		private void endTextBox5_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Utils.ParseUDouble(endTextBox5.Text);
				double startState = Utils.ParseUDouble(startTextBox5.Text);
				err = 100.0 * (endState - startState - refVolume) / refVolume;
			}
			catch { err = 1000.0f; };
			exclamation5.Visible = (err < warningLimLo) || (warningLimHi < err);
		}
		private void endTextBox6_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Utils.ParseUDouble(endTextBox6.Text);
				double startState = Utils.ParseUDouble(startTextBox6.Text);
				err = 100.0 * (endState - startState - refVolume) / refVolume;
			}
			catch { err = 1000.0f; };
			exclamation6.Visible = (err < warningLimLo) || (warningLimHi < err);
		}

        private void endTextBox13_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(endTextBox13.Text));
				double startState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(startTextBox13.Text));
				err = 100.0 * (endState - startState - refEnergy) / refEnergy;
			}
			catch { err = 1000.0f; };
			exclamation13.Visible = (err < energyWarningLimLo) || (energyWarningLimHi < err);
		}
		private void endTextBox14_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(endTextBox14.Text));
				double startState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(startTextBox14.Text));
				err = 100.0 * (endState - startState - refEnergy) / refEnergy;
			}
			catch { err = 1000.0f; };
			exclamation14.Visible = (err < energyWarningLimLo) || (energyWarningLimHi < err);
		}
		private void endTextBox15_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(endTextBox15.Text));
				double startState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(startTextBox15.Text));
				err = 100.0 * (endState - startState - refEnergy) / refEnergy;
			}
			catch { err = 1000.0f; };
			exclamation15.Visible = (err < energyWarningLimLo) || (energyWarningLimHi < err);
		}
		private void endTextBox16_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(endTextBox16.Text));
				double startState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(startTextBox16.Text));
				err = 100.0 * (endState - startState - refEnergy) / refEnergy;
			}
			catch { err = 1000.0f; };
			exclamation16.Visible = (err < energyWarningLimLo) || (energyWarningLimHi < err);
		}
		private void endTextBox17_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(endTextBox17.Text));
				double startState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(startTextBox17.Text));
				err = 100.0 * (endState - startState - refEnergy) / refEnergy;
			}
			catch { err = 1000.0f; };
			exclamation17.Visible = (err < energyWarningLimLo) || (energyWarningLimHi < err);
		}
		private void endTextBox18_TextChanged(object sender, EventArgs e)
		{
			double err = 0;
			try
			{
				double endState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(endTextBox18.Text));
				double startState = Common.Units.ConvertFrom(entryFormCfg.Units, Utils.ParseUDouble(startTextBox18.Text));
				err = 100.0 * (endState - startState - refEnergy) / refEnergy;
			}
			catch { err = 1000.0f; };
			exclamation18.Visible = (err < energyWarningLimLo) || (energyWarningLimHi < err);
		}

		/// <summary>
		/// Process a key press within any enabled text boxe
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		/// <param name="currentFocusOwner">TextBox control which received the event</param>
		private void ProcKeyPress(object sender, KeyPressEventArgs e, TextBox currentFocusOwner)
		{
			if (e.KeyChar == '+')
			{
				/// Process '+' key ..... Form completed
				okButton_Click(sender, e);
			}
			if (e.KeyChar == '\r')
			{
				/// Process <enter> key ..... Next text field
				if (enabledTextBoxes.Count < 2) return;		/// There is just one enabled textbox

				for (int i = 0; i < enabledTextBoxes.Count; i++)
				{
					if (enabledTextBoxes[i] == currentFocusOwner)
					{
						/// Change focus to the next enabled text box
						enabledTextBoxes[(i + 1) % enabledTextBoxes.Count].Focus();
						return;
					}
				}
			}
		}

		private void startTextBox1_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox1); }
		private void startTextBox2_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox2); }
		private void startTextBox3_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox3); }
		private void startTextBox4_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox4); }
		private void startTextBox5_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox5); }
		private void startTextBox6_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox6); }
		private void startTextBox13_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox13); }
		private void startTextBox14_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox14); }
		private void startTextBox15_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox15); }
		private void startTextBox16_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox16); }
		private void startTextBox17_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox17); }
		private void startTextBox18_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox18); }

		private void endTextBox1_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox1); }
		private void endTextBox2_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox2); }
		private void endTextBox3_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox3); }
		private void endTextBox4_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox4); }
		private void endTextBox5_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox5); }
		private void endTextBox6_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox6); }
		private void endTextBox13_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox13); }
		private void endTextBox14_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox14); }
		private void endTextBox15_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox15); }
		private void endTextBox16_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox16); }
		private void endTextBox17_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox17); }
		private void endTextBox18_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox18); }
	}
}