///
/// Copyright (c) 2015 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using log4net;
using Config.Entities;
using TBF.Resources;

namespace TBF.BenchControl.TestMethods.Adjustment
{
	public partial class WMErrorsForm24 : Form, GenericDevices.IHasCompleted
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(WMErrorsForm24));

		const int MaxWMsCount = 24;			/// Implementation limit of this form

		///
		/// Updated in constructor
		/// 
		readonly int waterMetersCount;		/// Number of text boxes for serial numbers
		readonly bool[] disabled;
		int textBoxesCount;
		Label[] labels;
		TextBox[] errors;
		Rectangle[] rects;

		///
		/// Updated in OnAdjustmentInProgress()
		///
		double[] error;						/// Created in constructor
		double errLimLo;
		double errLimHi;

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


		/// <summary> Parameterless constructor for 3 watermeters </summary>
		public WMErrorsForm24()
		{
			InitializeComponent();
			ControlBox = false;

			textBoxesCount = MaxWMsCount;

			labels = new Label[MaxWMsCount]
				{
					wmErrorLabel1, wmErrorLabel2, wmErrorLabel3, wmErrorLabel4, wmErrorLabel5,
					wmErrorLabel6, wmErrorLabel7, wmErrorLabel8, wmErrorLabel9, wmErrorLabel10,
					wmErrorLabel11, wmErrorLabel12, wmErrorLabel13, wmErrorLabel14, wmErrorLabel15,
					wmErrorLabel16, wmErrorLabel17, wmErrorLabel18, wmErrorLabel19, wmErrorLabel20,
					wmErrorLabel21, wmErrorLabel22, wmErrorLabel23, wmErrorLabel24,
				};
			errors = new TextBox[MaxWMsCount]
				{
					wmErrorTextBox1, wmErrorTextBox2, wmErrorTextBox3, wmErrorTextBox4, wmErrorTextBox5,
					wmErrorTextBox6, wmErrorTextBox7, wmErrorTextBox8, wmErrorTextBox9, wmErrorTextBox10,
					wmErrorTextBox11, wmErrorTextBox12, wmErrorTextBox13, wmErrorTextBox14, wmErrorTextBox15,
					wmErrorTextBox16, wmErrorTextBox17, wmErrorTextBox18, wmErrorTextBox19, wmErrorTextBox20,
					wmErrorTextBox21, wmErrorTextBox22, wmErrorTextBox23, wmErrorTextBox24,
				};

			rects = new Rectangle[MaxWMsCount];
			for (int i = 0; i < MaxWMsCount; i++)
			{
				int row = i % 12;
				int col = i / 12;
				rects[i] = new Rectangle(350 + col * 557, 25 + row * 47, 230, 37);
			}

			completed = false;

			/// Attach to 'AdjustmentInProgress' handler
			UiBridge.Bridge.AdjustmentInProgressHandler += delegate(object sender, UiBridge.AdjustmentInProgressEventArgs args)
			{
				if (InvokeRequired)
				{
					Invoke(new EventHandler<UiBridge.AdjustmentInProgressEventArgs>(OnAdjustmentInProgress), sender, args);
				}
				else OnAdjustmentInProgress(sender, args);
			};
		}
		
		/// <summary>
        /// Constructor
        /// </summary>
        /// <param name="waterMetersCount">Number of text boxes for serial numbers</param>
        public WMErrorsForm24(IList<GenericDevices.IWaterMeter> waterMeters)
			: this()
        {
            waterMetersCount = waterMeters.Count;

			ShuffleTextBoxes(waterMetersCount, Config.Data.LineSize);

			disabled = new bool[waterMetersCount];
			for (int i = 0; i < waterMetersCount; i++) disabled[i] = waterMeters[i].Disabled;

			error = 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>
		/// <param name="wmsCount">Number of watermeters</param>
		/// <param name="lineSize">Number of watermeters in one line</param>
		void ShuffleTextBoxes(int wmsCount, int lineSize)
		{
			if (wmsCount < textBoxesCount && lineSize > 0)
			{
				int nrLines = (wmsCount + lineSize - 1) / lineSize;
				int gap = (textBoxesCount - wmsCount) / nrLines;

				int dest = 0;
				for (int l = 0; l < nrLines; l++)
				{
					for (int i = 0; i < lineSize; i++)
					{
						labels[dest] = labels[l * lineSize + l * gap + i];
						errors[dest] = errors[l * lineSize + l * gap + i];
						rects[dest] = rects[l * lineSize + l * gap + i];
						dest++;
					}
				}
				textBoxesCount = wmsCount;
			}
		}


		void Localize()
        {
            Text = Strings.Water_Meter_States;
			for (int i = 0; i < textBoxesCount; i++)
			{
				labels[i].Text = string.Format("WM{0} {1}", i + 1, Strings.Error_pct);
			}
            okButton.Text = Strings.OkBtnText;
        }

		private void WMErrorsForm24_Load(object sender, EventArgs e)
		{
            Localize();

            //Height = 50 + 90 * WaterMetersCount;

			for (int i = 0; i < textBoxesCount; i++)
			{
				labels[i].Visible = errors[i].Visible = (disabled == null || i >= disabled.Length || !disabled[i]);
				errors[i].Text = "---";
			}
		}

		private void okButton_Click(object sender, EventArgs e)
		{
			completed = true;
			Close();
		}

		void OnAdjustmentInProgress(object sender, UiBridge.AdjustmentInProgressEventArgs args)
		{
			string testName = args.TestName;

			Results.Entities.TestRslt tr = TBF.BenchControl.Sequences.ProcessData.BatchRslts.GetTestRslt(testName, 0);
			errLimLo = tr.ErrLimLo() + tr.Uncertainty();
			errLimHi = tr.ErrLimHi() - tr.Uncertainty();

			int count = Math.Min(waterMetersCount, TBF.BenchControl.Sequences.ProcessData.BatchRslts.WMPositionsCount);
			for (int i = 0; i < count; i++)
			{
				Results.Entities.MeterTestRslt mtr = TBF.BenchControl.Sequences.ProcessData.BatchRslts.GetMeterTestRslt(testName, i, CompoundMeterId.Single);
				if (mtr != null) error[i] = mtr.Error;
			}

			Redraw();
		}

		void Redraw()
		{
			for (int i = 0; i < textBoxesCount; i++)
			{
				errors[i].Text = error[i].ToString("F1");
				Invalidate(rects[i]);
			}
		}

		private void WMErrorsForm_Paint(object sender, PaintEventArgs e)
		{
			System.Drawing.Graphics graphics = this.CreateGraphics();

			for (int i = 0; i < waterMetersCount; i++)
			{
				if (!disabled[i])
				{
					PaintOne(graphics, rects[i], error[i], errLimLo, errLimHi);
				}
			}
		}

		void PaintOne(System.Drawing.Graphics g, Rectangle r, double value, double limLo, double limHi)
		{
			Rectangle rect1 = new Rectangle(r.Left, r.Top, r.Width / 3, r.Height);
			Rectangle rect2 = new Rectangle(r.Left + r.Width / 3, r.Top, r.Width / 3, r.Height);
			Rectangle rect3 = new Rectangle(r.Left + 2 * (r.Width / 3), r.Top, r.Width / 3, r.Height);
			Rectangle rectCent = new Rectangle(r.Left + r.Width / 2 - 1, r.Top, 3, r.Height);

			Brush redBrush = new SolidBrush(Color.FromName("Salmon"));
			Brush greenBrush = new SolidBrush(Color.FromName("LightGreen"));
			Brush centBrush = new SolidBrush(Color.FromName("Green"));

			g.FillRectangle(redBrush, rect1);
			g.FillRectangle(greenBrush, rect2);
			g.FillRectangle(redBrush, rect3);
			g.FillRectangle(centBrush, rectCent);

			int x0 = r.Left + r.Width / 2;
			int dx = r.Height / 3;
			int x = (int)((double)r.Width * (2.0 * value - limLo - limHi) / (limHi - limLo) / 6.0f + 0.5f);

			if (x0 - dx + x >= r.Left && x0 + dx + x < r.Left + r.Width)
			{
				Point[] triangle = new Point[3]
				{
					new Point(x0 - dx + x, r.Top),
					new Point(x0 + dx + x, r.Top),
					new Point(x0 + x, r.Top + 2 * r.Height / 3),
				};

				Brush blackBrush = new SolidBrush(Color.Black);
				g.FillPolygon(blackBrush, triangle);
			}
		}

		#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
	}
}