///
/// Copyright (c) 2016 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Printing;
using Config.Entities;

namespace ResultsBrowser.Output.Printers.QueryResults
{
	public class QueryResultsPrintDocument : PrintDocument
	{
        const string FontFamilyName = "Arial";  //"Times New Roman";

		const int SpacingOne = 18;
		const int SpacingOneAndHalf = (3 * SpacingOne) / 2;
		const int TitleX = 240;
		const int TitleY = 180;			/// Depends on the size of the header
		const int FirstLineNr = 14;		/// Depends on the size of the header
		const int Tab1 = 80;			/// Positions of columns above the table
		const int Tab2 = 240;
		const int Tab3 = 430;
		const int Tab4 = 590;
		const int BorderW = 1;			/// Table border line width
		const int MarginTop = 7;		/// Margins of the text from table lines
        const int MarginLeft = 4;		/// Margins of the text from table lines
												
		///
		/// Data to print
		///
        readonly string docVersion;
		readonly Results.Entities.WaterMeter wm;
        string zaehlertyp;
        string pruefvorlage;

        readonly IList<Results.Entities.MeterTestRslt> results;
        readonly int resultsCount;
		readonly bool compound;			/// true when MetersKind is MetersKind.Combined												
										
		readonly int secondTableOffset;	/// Calculated in the constructor

		/// Top coordinate of the table
		int top;

		/// <summary>
		/// Property variable for the Font the user wishes to use
		/// </summary>
		Font font;
        Font boldFont;
        Font fontTitle;

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="textToPrint">Text to be printed</param>
		public QueryResultsPrintDocument(string docVersion,
										 Results.Entities.WaterMeter wm,
										 PageOrientation pageOrientation)
		{
            this.docVersion = docVersion;
			this.wm = wm;
			compound = wm.Compound();

            string[] info = wm.ProductName().Split(new char[] { ';' });
            if (info.Length >= 2)
            {
                pruefvorlage = info[0];
                zaehlertyp = info[1];
            }
            else if (info.Length == 1)
            {
                pruefvorlage = info[0];
                zaehlertyp = compound ? "Verbundzähler" : "Einzelzähler";
            }
            else
            {
                pruefvorlage = wm.ProcedureName();
                zaehlertyp = compound ? "Verbundzähler" : "Einzelzähler";
            }

			results = wm.MeterTestRslts;
            this.resultsCount = compound ? (results.Count / 3) : results.Count;

			int resultsCount = wm.MeterTestRslts.Count;
			if (compound) resultsCount /= 3;

			secondTableOffset = (resultsCount + 2) * SpacingOneAndHalf;

			DefaultPageSettings.Landscape = (pageOrientation == PageOrientation.Landscape);
		}

		/// <summary>
		/// Override the default onbeginPrint method of the PrintDocument Object.
		/// </summary>
		/// <param name=e></param>
		/// <remarks></remarks>
		protected override void OnBeginPrint(System.Drawing.Printing.PrintEventArgs e)
		{
			base.OnBeginPrint(e);

            if (font == null) { font = new Font(FontFamilyName, 10, FontStyle.Regular); }
            if (boldFont == null) { boldFont = new Font(FontFamilyName, 10, FontStyle.Bold); }
            if (fontTitle == null) { fontTitle = new Font(FontFamilyName, 24, FontStyle.Bold); }
        }

		/// <summary>
		/// Override the default OnPrintPage method of the PrintDocument.
		/// </summary>
		/// <param name=e></param>
		/// <remarks>This provides the print logic for our document</remarks>
		protected override void OnPrintPage(System.Drawing.Printing.PrintPageEventArgs e)
		{
			// Run base code
			base.OnPrintPage(e);

			/// Set print area size and margins (in dots using 80 dpi)
			int printHeight = base.DefaultPageSettings.PaperSize.Height - base.DefaultPageSettings.Margins.Top - base.DefaultPageSettings.Margins.Bottom;
			int printWidth  = base.DefaultPageSettings.PaperSize.Width - base.DefaultPageSettings.Margins.Left - base.DefaultPageSettings.Margins.Right;
			int leftMargin  = base.DefaultPageSettings.Margins.Left;	/// X
			int topMargin = base.DefaultPageSettings.Margins.Top;		/// Y

			/// Check if the user selected to print in Landscape mode
			/// if they did then we need to swap height/width parameters
			if (base.DefaultPageSettings.Landscape)
			{
				int tmp = printHeight;
				printHeight = printWidth;
				printWidth = tmp;
			}

			int x = leftMargin;
			int y = topMargin;

			/// Use the StringFormat class for the text layout of our document
			StringFormat format = new StringFormat(StringFormatFlags.LineLimit);

			RectangleF printArea = new RectangleF(TitleX, TitleY, 667, 50);
			e.Graphics.DrawString(wm.Batch.ProtocolTitle, this.fontTitle, Brushes.Black, printArea);

			int lineNr = FirstLineNr;
            PrintAt(e, Tab1, lineNr * SpacingOne, docVersion);
			lineNr++;
			PrintBoldAt(e, Tab1, lineNr * SpacingOne, "Prüfstand Nr :");
            PrintBoldAt(e, Tab2, lineNr * SpacingOne, wm.BenchId().ToString());
            PrintBoldAt(e, Tab3, lineNr * SpacingOne, "Datum :");
            PrintBoldAt(e, Tab4, lineNr * SpacingOne, wm.Batch.EndTime.Date.ToString("d"));
			lineNr++;
            PrintAt(e, Tab1, lineNr * SpacingOne, "Zählertyp :");
			PrintAt(e, Tab2, lineNr * SpacingOne, zaehlertyp);
			PrintAt(e, Tab3, lineNr * SpacingOne, "Eichjahr :");
            PrintAt(e, Tab4, lineNr * SpacingOne, wm.YearOfProduction.ToString());
			lineNr++;
			PrintAt(e, Tab1, lineNr * SpacingOne, "Prüfvorlage :");
			PrintAt(e, Tab2, lineNr * SpacingOne, pruefvorlage);
			lineNr += 2;

			if (compound)
			{
                PrintBoldAt(e, Tab1, lineNr * SpacingOne, "Hauptzahler");
                PrintBoldAt(e, Tab3, lineNr * SpacingOne, "Nebenzahler");
				lineNr++;
			}

			PrintAt(e, Tab1, lineNr * SpacingOne, "Hersteller :");
			PrintAt(e, Tab2, lineNr * SpacingOne,  wm.Producer());
			if (compound)
			{
				PrintAt(e, Tab3, lineNr * SpacingOne, "Hersteller :");
				PrintAt(e, Tab4, lineNr * SpacingOne, wm.ProducerAux());
			}
			lineNr++;

			PrintAt(e, Tab1, lineNr * SpacingOne, "Seriennummer :");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.SerialNr);
			if (compound)
			{
				PrintAt(e, Tab3, lineNr * SpacingOne, "Seriennummer :");
				PrintAt(e, Tab4, lineNr * SpacingOne, wm.SerialNrAux);
			}
			lineNr++;

			PrintAt(e, Tab1, lineNr * SpacingOne, "Qn :");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.Q3_Qn().ToString());
			if (compound)
			{
				PrintAt(e, Tab3, lineNr * SpacingOne, "Qn :");
                PrintAt(e, Tab4, lineNr * SpacingOne, wm.Q3_Qn_Aux().ToString());
			}
			lineNr++;

			PrintAt(e, Tab1, lineNr * SpacingOne, "Zulassungszeichen :");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.ApprovalInfo());
			if (compound)
			{
				PrintAt(e, Tab3, lineNr * SpacingOne, "Zulassungszeichen :");
				PrintAt(e, Tab4, lineNr * SpacingOne, wm.ApprovalInfoAux());
			}
			lineNr++;

			PrintAt(e, Tab1, lineNr * SpacingOne, "Metr. klasse :");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.MetrologicalClass());
			if (compound)
			{
				PrintAt(e, Tab3, lineNr * SpacingOne, "Metr. klasse :");
				PrintAt(e, Tab4, lineNr * SpacingOne, wm.MetrologicalClassAux());
			}
			lineNr++;

			PrintAt(e, Tab1, lineNr * SpacingOne, "Stand :");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.EndState);
			if (compound)
			{
				PrintAt(e, Tab3, lineNr * SpacingOne, "Stand :");
				PrintAt(e, Tab4, lineNr * SpacingOne, wm.EndStateAux);
			
				lineNr += 2;
				PrintAt(e, Tab1, lineNr * SpacingOne, "Umschaltpunkte :");
				lineNr++;
				PrintAt(e, Tab1, lineNr * SpacingOne, "Qsteig");
				PrintAt(e, Tab2, lineNr * SpacingOne, (1000.0 * wm.QRise).ToString("F1") + " l/h");
				lineNr++;
				PrintAt(e, Tab1, lineNr * SpacingOne, "Qfall");
				PrintAt(e, Tab2, lineNr * SpacingOne, (1000.0 * wm.QFall).ToString("F1") + " l/h");
			}

			lineNr += 2;
			top = SpacingOne * lineNr;

			PrintTable(e);
			DrawTable(e);

			lineNr += (secondTableOffset * 2) / SpacingOne;
			PrintAt(e, Tab1, lineNr * SpacingOne, "Temperatur");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.Batch.AmbTempMean().ToString("F1") + " \x00b0C");
			lineNr++;
			PrintAt(e, Tab1, lineNr * SpacingOne, "Feuchtigkeit");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.Batch.AmbHumiMean().ToString("F0") + " %");
			lineNr++;
			PrintAt(e, Tab1, lineNr * SpacingOne, "Luftdruck");
			PrintAt(e, Tab2, lineNr * SpacingOne, wm.Batch.AmbPressMean().ToString("F0") + " mbar");

			lineNr++;
			PrintAt(e, Tab3, lineNr * SpacingOne, wm.Batch.EndTime.Date.ToString("d"));
			lineNr ++;
			PrintAt(e, Tab3, lineNr * SpacingOne, "Datum");
			PrintAt(e, Tab4, lineNr * SpacingOne, "Unterschrift");
		}

		/// <summary>
		/// Print table texts.
		/// </summary>
		void PrintTable(System.Drawing.Printing.PrintPageEventArgs e)
		{
			PrintAt(e, FromTest(-1, -1), "Prüflauf");
			PrintAt(e, FromTest(-1, 0), "Q [l/h]");
			PrintAt(e, FromTest(-1, 1), "Prüf-Vol.[l]");
			PrintAt(e, FromTest(-1, 2), compound ? "HZ-Vol.[l]" : "Z-Vol.[l]");
			PrintAt(e, FromTest(-1, 3), compound ? "NZ-Vol.[l]" : "-");
			PrintAt(e, FromTest(-1, 4), "Fehler [%]");
			PrintAt(e, FromTest(-1, 5), "Ergebnis");

			PrintAt(e, FromTest(-1, 6), "Q [l/h]");
			PrintAt(e, FromTest(-1, 7), "Temperatur");
			PrintAt(e, FromTest(-1, 8), "Dichte");
			PrintAt(e, FromTest(-1, 9), "Prüfzeit");
			PrintAt(e, FromTest(-1, 10), "Druck Eing.");
			PrintAt(e, FromTest(-1, 11), "Druck Ausg.");

			int rowCnt = 0;
			foreach (var mtr in wm.MeterTestRslts) 
			{
				if (!compound || mtr.CompoundMeterId == (byte)CompoundMeterId.Compound)
				{
					Point p = FromTest(rowCnt, -1);
					PrintAt(e, p.X, p.Y, mtr.Name());
					PrintAt(e, p.X, p.Y + (resultsCount + 2) * SpacingOneAndHalf, mtr.Name());

					PrintAt(e, FromTest(rowCnt, 0), mtr.TestRslt.FlowMass.ToString("F1"));
					PrintAt(e, FromTest(rowCnt, 1), mtr.TestRslt.VolumeCTV.ToString("F2"));
					if (compound)
					{
						Results.Entities.MeterTestRslt mainMtr = wm.GetMeterTestRslt(mtr.Name(), CompoundMeterId.CompoundMain);
						Results.Entities.MeterTestRslt auxMtr = wm.GetMeterTestRslt(mtr.Name(), CompoundMeterId.CompoundAux);

						PrintAt(e, FromTest(rowCnt, 2), mainMtr.VolumeMeter.ToString("F2"));
						PrintAt(e, FromTest(rowCnt, 3), auxMtr.VolumeMeter.ToString("F2"));
						PrintAt(e, FromTest(rowCnt, 4), mtr.Error.ToString("F2"));
						PrintAt(e, FromTest(rowCnt, 5), mtr.Passed ? "iO" : "NiO");
					}
					else
					{
						PrintAt(e, FromTest(rowCnt, 2), mtr.VolumeMeter.ToString("F2"));
						PrintAt(e, FromTest(rowCnt, 3), "-");
						PrintAt(e, FromTest(rowCnt, 4), mtr.Error.ToString("F2"));
						PrintAt(e, FromTest(rowCnt, 5), mtr.Passed ? "iO" : "NiO");
					}
					PrintAt(e, FromTest(rowCnt, 6), mtr.TestRslt.FlowMass.ToString("F1"));
					PrintAt(e, FromTest(rowCnt, 7), mtr.TestRslt.TempDownMean.ToString("F2"));
					PrintAt(e, FromTest(rowCnt, 8), mtr.TestRslt.DensityDiv.ToString("F2"));
					PrintAt(e, FromTest(rowCnt, 9), mtr.TestTime.ToString("F1"));
					PrintAt(e, FromTest(rowCnt, 10), Config.Units.ConvertTo(Config.Unit.bar, mtr.TestRslt.PressUpMean).ToString("F3"));
					PrintAt(e, FromTest(rowCnt, 11), Config.Units.ConvertTo(Config.Unit.bar, mtr.TestRslt.PressDownMean).ToString("F3"));

                    rowCnt++;
				}
			}
		}

		/// <summary>
		/// Draw table lines.
		/// </summary>
		void DrawTable(System.Drawing.Printing.PrintPageEventArgs e)
		{
			int mid = top + SpacingOneAndHalf;
			int bot = top + (resultsCount + 1) * SpacingOneAndHalf;

			int top2 = top + secondTableOffset;
			int mid2 = mid + secondTableOffset;
			int bot2 = bot + secondTableOffset;

			// Horizontal lines
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(80, top), new Point(747, top));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(80, mid), new Point(747, mid));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(80, bot), new Point(747, bot));

			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(80, top2), new Point(747, top2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(80, mid2), new Point(747, mid2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(80, bot2), new Point(747, bot2));

			// Vertical lines
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point( 80, top), new Point( 80, bot));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(267, top), new Point(267, bot));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(347, top), new Point(347, bot));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(427, top), new Point(427, bot));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(507, top), new Point(507, bot));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(587, top), new Point(587, bot));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(667, top), new Point(667, bot));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(747, top), new Point(747, bot));

			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point( 80, top2), new Point( 80, bot2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(267, top2), new Point(267, bot2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(347, top2), new Point(347, bot2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(427, top2), new Point(427, bot2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(507, top2), new Point(507, bot2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(587, top2), new Point(587, bot2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(667, top2), new Point(667, bot2));
			e.Graphics.DrawLine(new Pen(Color.Black, BorderW), new Point(747, top2), new Point(747, bot2));
		}

		void PrintAt(System.Drawing.Printing.PrintPageEventArgs e, Point p, string text)
		{
			PrintAt(e, p.X, p.Y, text);
		}

		void PrintAt(System.Drawing.Printing.PrintPageEventArgs e, int x, int y, string text)
		{
			RectangleF printArea = new RectangleF(x, y, 667, SpacingOne);
			e.Graphics.DrawString(text, this.font, Brushes.Black, printArea);
		}

        void PrintBoldAt(System.Drawing.Printing.PrintPageEventArgs e, Point p, string text)
        {
            PrintBoldAt(e, p.X, p.Y, text);
        }

        void PrintBoldAt(System.Drawing.Printing.PrintPageEventArgs e, int x, int y, string text)
        {
            RectangleF printArea = new RectangleF(x, y, 667, SpacingOne);
            e.Graphics.DrawString(text, this.boldFont, Brushes.Black, printArea);
        }

        Point FromTest(int testNr, int parNr)
		{
			const int NrParamsInOneTableRow = 6;

			int x = 267 + (parNr % NrParamsInOneTableRow) * 80 + MarginLeft;
			int y = top + SpacingOneAndHalf + MarginTop + testNr * SpacingOneAndHalf
				  + ((parNr >= NrParamsInOneTableRow) ? secondTableOffset : 0);

			if (parNr < 0) x = 80 + MarginLeft;		/// When parNr == -1 return the left column x coordinate

			return new Point(x, y);
		}
	}
}