/*******************************************************************************
 * You may amend and distribute as you like, but don't remove this header!
 *
 * EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
 * See http://www.codeplex.com/EPPlus for details.
 *
 * Copyright (C) 2011  Jan Källman
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
 * If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
 *
 * All code and executables are provided "as is" with no warranty either express or implied.
 * The author accepts no liability for any damage or loss of business that this product may cause.
 *
 * Code change notes:
 *
 * Author							Change						Date
 * ******************************************************************************
 * Jan Källman		                Initial Release		        2009-10-01
 * Jan Källman		                License changed GPL-->LGPL 2011-12-27
 *******************************************************************************/

using System;
using System.Globalization;
using System.Xml;

namespace OfficeOpenXml;

/// <summary>
/// Printer orientation
/// </summary>
public enum eOrientation {
  /// <summary>
  /// Portrait orientation
  /// </summary>
  Portrait,

  /// <summary>
  /// Landscape orientation
  /// </summary>
  Landscape,
}

/// <summary>
/// Papersize
/// </summary>
public enum ePaperSize {
  /// <summary>
  /// Letter paper (8.5 in. by 11 in.)
  /// </summary>
  Letter = 1,

  /// <summary>
  /// Letter small paper (8.5 in. by 11 in.)
  /// </summary>
  LetterSmall = 2,

  /// <summary>
  /// // Tabloid paper (11 in. by 17 in.)
  /// </summary>
  Tabloid = 3,

  /// <summary>
  /// Ledger paper (17 in. by 11 in.)
  /// </summary>
  Ledger = 4,

  /// <summary>
  /// Legal paper (8.5 in. by 14 in.)
  /// </summary>
  Legal = 5,

  /// <summary>
  /// Statement paper (5.5 in. by 8.5 in.)
  /// </summary>
  Statement = 6,

  /// <summary>
  /// Executive paper (7.25 in. by 10.5 in.)
  /// </summary>
  Executive = 7,

  /// <summary>
  /// A3 paper (297 mm by 420 mm)
  /// </summary>
  A3 = 8,

  /// <summary>
  /// A4 paper (210 mm by 297 mm)
  /// </summary>
  A4 = 9,

  /// <summary>
  /// A4 small paper (210 mm by 297 mm)
  /// </summary>
  A4Small = 10,

  /// <summary>
  /// A5 paper (148 mm by 210 mm)
  /// </summary>
  A5 = 11,

  /// <summary>
  /// B4 paper (250 mm by 353 mm)
  /// </summary>
  B4 = 12,

  /// <summary>
  /// B5 paper (176 mm by 250 mm)
  /// </summary>
  B5 = 13,

  /// <summary>
  /// Folio paper (8.5 in. by 13 in.)
  /// </summary>
  Folio = 14,

  /// <summary>
  /// Quarto paper (215 mm by 275 mm)
  /// </summary>
  Quarto = 15,

  /// <summary>
  /// Standard paper (10 in. by 14 in.)
  /// </summary>
  Standard1014 = 16,

  /// <summary>
  /// Standard paper (11 in. by 17 in.)
  /// </summary>
  Standard1117 = 17,

  /// <summary>
  /// Note paper (8.5 in. by 11 in.)
  /// </summary>
  Note = 18,

  /// <summary>
  /// #9 envelope (3.875 in. by 8.875 in.)
  /// </summary>
  Envelope9 = 19,

  /// <summary>
  /// #10 envelope (4.125 in. by 9.5 in.)
  /// </summary>
  Envelope10 = 20,

  /// <summary>
  /// #11 envelope (4.5 in. by 10.375 in.)
  /// </summary>
  Envelope11 = 21,

  /// <summary>
  /// #12 envelope (4.75 in. by 11 in.)
  /// </summary>
  Envelope12 = 22,

  /// <summary>
  /// #14 envelope (5 in. by 11.5 in.)
  /// </summary>
  Envelope14 = 23,

  /// <summary>
  /// C paper (17 in. by 22 in.)
  /// </summary>
  C = 24,

  /// <summary>
  /// D paper (22 in. by 34 in.)
  /// </summary>
  D = 25,

  /// <summary>
  /// E paper (34 in. by 44 in.)
  /// </summary>
  E = 26,

  /// <summary>
  /// DL envelope (110 mm by 220 mm)
  /// </summary>
  DlEnvelope = 27,

  /// <summary>
  /// C5 envelope (162 mm by 229 mm)
  /// </summary>
  C5Envelope = 28,

  /// <summary>
  /// C3 envelope (324 mm by 458 mm)
  /// </summary>
  C3Envelope = 29,

  /// <summary>
  /// C4 envelope (229 mm by 324 mm)
  /// </summary>
  C4Envelope = 30,

  /// <summary>
  /// C6 envelope (114 mm by 162 mm)
  /// </summary>
  C6Envelope = 31,

  /// <summary>
  /// C65 envelope (114 mm by 229 mm)
  /// </summary>
  C65Envelope = 32,

  /// <summary>
  /// B4 envelope (250 mm by 353 mm)
  /// </summary>
  B4Envelope = 33,

  /// <summary>
  /// B5 envelope (176 mm by 250 mm)
  /// </summary>
  B5Envelope = 34,

  /// <summary>
  /// B6 envelope (176 mm by 125 mm)
  /// </summary>
  B6Envelope = 35,

  /// <summary>
  /// Italy envelope (110 mm by 230 mm)
  /// </summary>
  ItalyEnvelope = 36,

  /// <summary>
  /// Monarch envelope (3.875 in. by 7.5 in.).
  /// </summary>
  MonarchEnvelope = 37,

  /// <summary>
  /// 6 3/4 envelope (3.625 in. by 6.5 in.)
  /// </summary>
  Six34Envelope = 38,

  /// <summary>
  /// US standard fanfold (14.875 in. by 11 in.)
  /// </summary>
  UsStandard = 39,

  /// <summary>
  /// German standard fanfold (8.5 in. by 12 in.)
  /// </summary>
  GermanStandard = 40,

  /// <summary>
  /// German legal fanfold (8.5 in. by 13 in.)
  /// </summary>
  GermanLegal = 41,

  /// <summary>
  /// ISO B4 (250 mm by 353 mm)
  /// </summary>
  Isob4 = 42,

  /// <summary>
  ///  Japanese double postcard (200 mm by 148 mm)
  /// </summary>
  JapaneseDoublePostcard = 43,

  /// <summary>
  /// Standard paper (9 in. by 11 in.)
  /// </summary>
  Standard9 = 44,

  /// <summary>
  /// Standard paper (10 in. by 11 in.)
  /// </summary>
  Standard10 = 45,

  /// <summary>
  /// Standard paper (15 in. by 11 in.)
  /// </summary>
  Standard15 = 46,

  /// <summary>
  /// Invite envelope (220 mm by 220 mm)
  /// </summary>
  InviteEnvelope = 47,

  /// <summary>
  /// Letter extra paper (9.275 in. by 12 in.)
  /// </summary>
  LetterExtra = 50,

  /// <summary>
  /// Legal extra paper (9.275 in. by 15 in.)
  /// </summary>
  LegalExtra = 51,

  /// <summary>
  /// Tabloid extra paper (11.69 in. by 18 in.)
  /// </summary>
  TabloidExtra = 52,

  /// <summary>
  /// A4 extra paper (236 mm by 322 mm)
  /// </summary>
  A4Extra = 53,

  /// <summary>
  /// Letter transverse paper (8.275 in. by 11 in.)
  /// </summary>
  LetterTransverse = 54,

  /// <summary>
  /// A4 transverse paper (210 mm by 297 mm)
  /// </summary>
  A4Transverse = 55,

  /// <summary>
  /// Letter extra transverse paper (9.275 in. by 12 in.)
  /// </summary>
  LetterExtraTransverse = 56,

  /// <summary>
  /// SuperA/SuperA/A4 paper (227 mm by 356 mm)
  /// </summary>
  SuperA = 57,

  /// <summary>
  /// SuperB/SuperB/A3 paper (305 mm by 487 mm)
  /// </summary>
  SuperB = 58,

  /// <summary>
  /// Letter plus paper (8.5 in. by 12.69 in.)
  /// </summary>
  LetterPlus = 59,

  /// <summary>
  /// A4 plus paper (210 mm by 330 mm)
  /// </summary>
  A4Plus = 60,

  /// <summary>
  /// A5 transverse paper (148 mm by 210 mm)
  /// </summary>
  A5Transverse = 61,

  /// <summary>
  /// JIS B5 transverse paper (182 mm by 257 mm)
  /// </summary>
  Jisb5Transverse = 62,

  /// <summary>
  /// A3 extra paper (322 mm by 445 mm)
  /// </summary>
  A3Extra = 63,

  /// <summary>
  /// A5 extra paper (174 mm by 235 mm)
  /// </summary>
  A5Extra = 64,

  /// <summary>
  /// ISO B5 extra paper (201 mm by 276 mm)
  /// </summary>
  Isob5 = 65,

  /// <summary>
  /// A2 paper (420 mm by 594 mm)
  /// </summary>
  A2 = 66,

  /// <summary>
  /// A3 transverse paper (297 mm by 420 mm)
  /// </summary>
  A3Transverse = 67,

  /// <summary>
  /// A3 extra transverse paper (322 mm by 445 mm*/
  /// </summary>
  A3ExtraTransverse = 68,
}

/// <summary>
/// Specifies printed page order
/// </summary>
public enum ePageOrder {
  /// <summary>
  /// Order pages vertically first, then move horizontally.
  /// </summary>
  DownThenOver,

  /// <summary>
  /// Order pages horizontally first, then move vertically
  /// </summary>
  OverThenDown,
}

/// <summary>
/// Printer settings
/// </summary>
public sealed class ExcelPrinterSettings : XmlHelper {
  private readonly ExcelWorksheet _ws;
  private bool _marginsCreated;

  internal ExcelPrinterSettings(XmlNamespaceManager ns, XmlNode topNode, ExcelWorksheet ws)
      : base(ns, topNode) {
    _ws = ws;
    SchemaNodeOrder = ws.SchemaNodeOrder;
  }

  private const string _leftMarginPath = "d:pageMargins/@left";

  /// <summary>
  /// Left margin in inches
  /// </summary>
  public decimal LeftMargin {
    get => GetXmlNodeDecimal(_leftMarginPath);
    set {
      CreateMargins();
      SetXmlNodeString(_leftMarginPath, value.ToString(CultureInfo.InvariantCulture));
    }
  }

  private const string _rightMarginPath = "d:pageMargins/@right";

  /// <summary>
  /// Right margin in inches
  /// </summary>
  public decimal RightMargin {
    get => GetXmlNodeDecimal(_rightMarginPath);
    set {
      CreateMargins();
      SetXmlNodeString(_rightMarginPath, value.ToString(CultureInfo.InvariantCulture));
    }
  }

  private const string _topMarginPath = "d:pageMargins/@top";

  /// <summary>
  /// Top margin in inches
  /// </summary>
  public decimal TopMargin {
    get => GetXmlNodeDecimal(_topMarginPath);
    set {
      CreateMargins();
      SetXmlNodeString(_topMarginPath, value.ToString(CultureInfo.InvariantCulture));
    }
  }

  private const string _bottomMarginPath = "d:pageMargins/@bottom";

  /// <summary>
  /// Bottom margin in inches
  /// </summary>
  public decimal BottomMargin {
    get => GetXmlNodeDecimal(_bottomMarginPath);
    set {
      CreateMargins();
      SetXmlNodeString(_bottomMarginPath, value.ToString(CultureInfo.InvariantCulture));
    }
  }

  private const string _headerMarginPath = "d:pageMargins/@header";

  /// <summary>
  /// Header margin in inches
  /// </summary>
  public decimal HeaderMargin {
    get => GetXmlNodeDecimal(_headerMarginPath);
    set {
      CreateMargins();
      SetXmlNodeString(_headerMarginPath, value.ToString(CultureInfo.InvariantCulture));
    }
  }

  private const string _footerMarginPath = "d:pageMargins/@footer";

  /// <summary>
  /// Footer margin in inches
  /// </summary>
  public decimal FooterMargin {
    get => GetXmlNodeDecimal(_footerMarginPath);
    set {
      CreateMargins();
      SetXmlNodeString(_footerMarginPath, value.ToString(CultureInfo.InvariantCulture));
    }
  }

  private const string _orientationPath = "d:pageSetup/@orientation";

  /// <summary>
  /// Orientation
  /// Portrait or Landscape
  /// </summary>
  public eOrientation Orientation {
    get => (eOrientation)Enum.Parse(typeof(eOrientation), GetXmlNodeString(_orientationPath), true);
    set =>
      SetXmlNodeString(_orientationPath, value.ToString().ToLower(CultureInfo.InvariantCulture));
  }

  private const string _fitToWidthPath = "d:pageSetup/@fitToWidth";

  /// <summary>
  /// Fit to Width in pages.
  /// Set FitToPage to true when using this one.
  /// 0 is automatic
  /// </summary>
  public int FitToWidth {
    get => GetXmlNodeInt(_fitToWidthPath);
    set => SetXmlNodeString(_fitToWidthPath, value.ToString());
  }

  private const string _fitToHeightPath = "d:pageSetup/@fitToHeight";

  /// <summary>
  /// Fit to height in pages.
  /// Set FitToPage to true when using this one.
  /// 0 is automatic
  /// </summary>
  public int FitToHeight {
    get => GetXmlNodeInt(_fitToHeightPath);
    set => SetXmlNodeString(_fitToHeightPath, value.ToString());
  }

  private const string _scalePath = "d:pageSetup/@scale";

  /// <summary>
  /// Print scale
  /// </summary>
  public int Scale {
    get => GetXmlNodeInt(_scalePath);
    set => SetXmlNodeString(_scalePath, value.ToString());
  }

  private const string _fitToPagePath = "d:sheetPr/d:pageSetUpPr/@fitToPage";

  /// <summary>
  /// Fit To Page.
  /// </summary>
  public bool FitToPage {
    get => GetXmlNodeBool(_fitToPagePath);
    set => SetXmlNodeString(_fitToPagePath, value ? "1" : "0");
  }

  private const string _headersPath = "d:printOptions/@headings";

  /// <summary>
  /// Print headings (column letter and row numbers)
  /// </summary>
  public bool ShowHeaders {
    get => GetXmlNodeBool(_headersPath, false);
    set => SetXmlNodeBool(_headersPath, value, false);
  }

  /// <summary>
  /// Print titles
  /// Rows to be repeated after each pagebreak.
  /// The address must be a full row address (ex. 1:1)
  /// </summary>
  public ExcelAddress RepeatRows {
    get {
      if (_ws.Names.ContainsKey("_xlnm.Print_Titles")) {
        ExcelRangeBase r = _ws.Names["_xlnm.Print_Titles"];
        if (r.Start.Column == 1 && r.End.Column == ExcelPackage.MaxColumns) {
          return new(r.FirstAddress);
        }
        if (r._addresses != null
            && r.Addresses[0].Start.Column == 1
            && r.Addresses[0].End.Column == ExcelPackage.MaxColumns) {
          return r._addresses[0];
        }
        return null;
      }
      return null;
    }
    set {
      //Must span entire columns
      if (!(value.Start.Column == 1 && value.End.Column == ExcelPackage.MaxColumns)) {
        throw new InvalidOperationException(
            "Address must span full columns only (for ex. Address=\"A:A\" for the first column).");
      }

      var vertAddr = RepeatColumns;
      string addr;
      if (vertAddr == null) {
        addr = value.Address;
      } else {
        addr = vertAddr.Address + "," + value.Address;
      }

      if (_ws.Names.ContainsKey("_xlnm.Print_Titles")) {
        _ws.Names["_xlnm.Print_Titles"].Address = addr;
      } else {
        _ws.Names.Add("_xlnm.Print_Titles", new(_ws, addr));
      }
    }
  }

  /// <summary>
  /// Print titles
  /// Columns to be repeated after each pagebreak.
  /// The address must be a full column address (ex. A:A)
  /// </summary>
  public ExcelAddress RepeatColumns {
    get {
      if (_ws.Names.ContainsKey("_xlnm.Print_Titles")) {
        ExcelRangeBase r = _ws.Names["_xlnm.Print_Titles"];
        if (r.Start.Row == 1 && r.End.Row == ExcelPackage.MaxRows) {
          return new(r.FirstAddress);
        }
        if (r._addresses != null
            && (r._addresses[0].Start.Row == 1
                    && r._addresses[0].End.Row == ExcelPackage.MaxRows)) {
          return r._addresses[0];
        }
        return null;
      }
      return null;
    }
    set {
      //Must span entire rows
      if (!(value.Start.Row == 1 && value.End.Row == ExcelPackage.MaxRows)) {
        throw new InvalidOperationException(
            "Address must span rows only (for ex. Address=\"1:1\" for the first row).");
      }

      var horAddr = RepeatRows;
      string addr;
      if (horAddr == null) {
        addr = value.Address;
      } else {
        addr = value.Address + "," + horAddr.Address;
      }

      if (_ws.Names.ContainsKey("_xlnm.Print_Titles")) {
        _ws.Names["_xlnm.Print_Titles"].Address = addr;
      } else {
        _ws.Names.Add("_xlnm.Print_Titles", new(_ws, addr));
      }
    }
  }

  /// <summary>
  /// The printarea.
  /// Null if no print area is set.
  /// </summary>
  public ExcelRangeBase PrintArea {
    get {
      if (_ws.Names.ContainsKey("_xlnm.Print_Area")) {
        return _ws.Names["_xlnm.Print_Area"];
      }
      return null;
    }
    set {
      if (value == null) {
        _ws.Names.Remove("_xlnm.Print_Area");
      } else if (_ws.Names.ContainsKey("_xlnm.Print_Area")) {
        _ws.Names["_xlnm.Print_Area"].Address = value.Address;
      } else {
        _ws.Names.Add("_xlnm.Print_Area", value);
      }
    }
  }

  private const string _gridLinesPath = "d:printOptions/@gridLines";

  /// <summary>
  /// Print gridlines
  /// </summary>
  public bool ShowGridLines {
    get => GetXmlNodeBool(_gridLinesPath, false);
    set => SetXmlNodeBool(_gridLinesPath, value, false);
  }

  private const string _horizontalCenteredPath = "d:printOptions/@horizontalCentered";

  /// <summary>
  /// Horizontal centered when printing
  /// </summary>w
  public bool HorizontalCentered {
    get => GetXmlNodeBool(_horizontalCenteredPath, false);
    set => SetXmlNodeBool(_horizontalCenteredPath, value, false);
  }

  private const string _verticalCenteredPath = "d:printOptions/@verticalCentered";

  /// <summary>
  /// Vertical centered when printing
  /// </summary>
  public bool VerticalCentered {
    get => GetXmlNodeBool(_verticalCenteredPath, false);
    set => SetXmlNodeBool(_verticalCenteredPath, value, false);
  }

  private const string _pageOrderPath = "d:pageSetup/@pageOrder";

  /// <summary>
  /// Specifies printed page order
  /// </summary>
  public ePageOrder PageOrder {
    get {
      if (GetXmlNodeString(_pageOrderPath) == "overThenDown") {
        return ePageOrder.OverThenDown;
      }
      return ePageOrder.DownThenOver;
    }
    set {
      if (value == ePageOrder.OverThenDown) {
        SetXmlNodeString(_pageOrderPath, "overThenDown");
      } else {
        DeleteNode(_pageOrderPath);
      }
    }
  }

  private const string _blackAndWhitePath = "d:pageSetup/@blackAndWhite";

  /// <summary>
  /// Print black and white
  /// </summary>
  public bool BlackAndWhite {
    get => GetXmlNodeBool(_blackAndWhitePath, false);
    set => SetXmlNodeBool(_blackAndWhitePath, value, false);
  }

  private const string _draftPath = "d:pageSetup/@draft";

  /// <summary>
  /// Print a draft
  /// </summary>
  public bool Draft {
    get => GetXmlNodeBool(_draftPath, false);
    set => SetXmlNodeBool(_draftPath, value, false);
  }

  private const string _paperSizePath = "d:pageSetup/@paperSize";

  /// <summary>
  /// Paper size
  /// </summary>
  public ePaperSize PaperSize {
    get {
      string s = GetXmlNodeString(_paperSizePath);
      if (s != "") {
        return (ePaperSize)int.Parse(s);
      }
      return ePaperSize.Letter;
    }
    set => SetXmlNodeString(_paperSizePath, ((int)value).ToString());
  }

  /// <summary>
  /// All or none of the margin attributes must exist. Create all att ones.
  /// </summary>
  private void CreateMargins() {
    if (_marginsCreated == false
        && TopNode.SelectSingleNode(_leftMarginPath, NameSpaceManager) == null) {
      _marginsCreated = true;
      LeftMargin = 0.7087M;
      RightMargin = 0.7087M;
      TopMargin = 0.7480M;
      BottomMargin = 0.7480M;
      HeaderMargin = 0.315M;
      FooterMargin = 0.315M;
    }
  }
}