/*******************************************************************************
 * 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		        2010-06-01
 * Jan Källman		License changed GPL-->LGPL 2011-12-16
 *******************************************************************************/

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

namespace OfficeOpenXml.Drawing.Vml;

/// <summary>
/// Drawing object used for comments
/// </summary>
public class ExcelVmlDrawingComment : ExcelVmlDrawingBase, IRangeId {
  internal ExcelVmlDrawingComment(XmlNode topNode, ExcelRangeBase range, XmlNamespaceManager ns)
      : base(topNode, ns) {
    Range = range;
    SchemaNodeOrder = new[] {
      "fill",
      "stroke",
      "shadow",
      "path",
      "textbox",
      "ClientData",
      "MoveWithCells",
      "SizeWithCells",
      "Anchor",
      "Locked",
      "AutoFill",
      "LockText",
      "TextHAlign",
      "TextVAlign",
      "Row",
      "Column",
      "Visible",
    };
  }

  internal ExcelRangeBase Range { get; set; }

  /// <summary>
  /// Address in the worksheet
  /// </summary>
  public string Address => Range.Address;

  private const string _verticalAlignmentPath = "x:ClientData/x:TextVAlign";

  /// <summary>
  /// Vertical alignment for text
  /// </summary>
  public eTextAlignVerticalVml VerticalAlignment {
    get {
      switch (GetXmlNodeString(_verticalAlignmentPath)) {
        case "Center":
          return eTextAlignVerticalVml.Center;
        case "Bottom":
          return eTextAlignVerticalVml.Bottom;
        default:
          return eTextAlignVerticalVml.Top;
      }
    }
    set {
      switch (value) {
        case eTextAlignVerticalVml.Center:
          SetXmlNodeString(_verticalAlignmentPath, "Center");
          break;
        case eTextAlignVerticalVml.Bottom:
          SetXmlNodeString(_verticalAlignmentPath, "Bottom");
          break;
        default:
          DeleteNode(_verticalAlignmentPath);
          break;
      }
    }
  }

  private const string _horizontalAlignmentPath = "x:ClientData/x:TextHAlign";

  /// <summary>
  /// Horizontal alignment for text
  /// </summary>
  public eTextAlignHorizontalVml HorizontalAlignment {
    get {
      switch (GetXmlNodeString(_horizontalAlignmentPath)) {
        case "Center":
          return eTextAlignHorizontalVml.Center;
        case "Right":
          return eTextAlignHorizontalVml.Right;
        default:
          return eTextAlignHorizontalVml.Left;
      }
    }
    set {
      switch (value) {
        case eTextAlignHorizontalVml.Center:
          SetXmlNodeString(_horizontalAlignmentPath, "Center");
          break;
        case eTextAlignHorizontalVml.Right:
          SetXmlNodeString(_horizontalAlignmentPath, "Right");
          break;
        default:
          DeleteNode(_horizontalAlignmentPath);
          break;
      }
    }
  }

  private const string _visiblePath = "x:ClientData/x:Visible";

  /// <summary>
  /// If the drawing object is visible.
  /// </summary>
  public bool Visible {
    get => (TopNode.SelectSingleNode(_visiblePath, NameSpaceManager) != null);
    set {
      if (value) {
        CreateNode(_visiblePath);
        Style = SetStyle(Style, "visibility", "visible");
      } else {
        DeleteNode(_visiblePath);
        Style = SetStyle(Style, "visibility", "hidden");
      }
    }
  }

  private const string _backgroundcolorPath = "@fillcolor";

  /// <summary>
  /// Background color
  /// </summary>
  public Color BackgroundColor {
    get {
      string col = GetXmlNodeString(_backgroundcolorPath);
      if (col == "") {
        return Color.FromArgb(0xff, 0xff, 0xe1);
      }
      if (col.StartsWith("#")) {
        col = col.Substring(1, col.Length - 1);
      }
      if (int.TryParse(
          col,
          NumberStyles.AllowHexSpecifier,
          CultureInfo.InvariantCulture,
          out var res)) {
        return Color.FromArgb(res);
      }
      return Color.Empty;
    }
    set {
      string color = "#" + value.ToArgb().ToString("X").Substring(2, 6);
      SetXmlNodeString(_backgroundcolorPath, color);
      //SetXmlNode(BACKGROUNDCOLOR2_PATH, color);
    }
  }

  private const string _linestylePath = "v:stroke/@dashstyle";
  private const string _endcapPath = "v:stroke/@endcap";

  /// <summary>
  /// Linestyle for border
  /// </summary>
  public eLineStyleVml LineStyle {
    get {
      string v = GetXmlNodeString(_linestylePath);
      if (v == "") {
        return eLineStyleVml.Solid;
      }
      if (v == "1 1") {
        v = GetXmlNodeString(_endcapPath);
        return (eLineStyleVml)Enum.Parse(typeof(eLineStyleVml), v, true);
      }
      return (eLineStyleVml)Enum.Parse(typeof(eLineStyleVml), v, true);
    }
    set {
      if (value == eLineStyleVml.Round || value == eLineStyleVml.Square) {
        SetXmlNodeString(_linestylePath, "1 1");
        if (value == eLineStyleVml.Round) {
          SetXmlNodeString(_endcapPath, "round");
        } else {
          DeleteNode(_endcapPath);
        }
      } else {
        string v = value.ToString();
        v = v.Substring(0, 1).ToLower(CultureInfo.InvariantCulture) + v.Substring(1, v.Length - 1);
        SetXmlNodeString(_linestylePath, v);
        DeleteNode(_endcapPath);
      }
    }
  }

  private const string _linecolorPath = "@strokecolor";

  /// <summary>
  /// Line color
  /// </summary>
  public Color LineColor {
    get {
      string col = GetXmlNodeString(_linecolorPath);
      if (col == "") {
        return Color.Black;
      }
      if (col.StartsWith("#")) {
        col = col.Substring(1, col.Length - 1);
      }
      if (int.TryParse(
          col,
          NumberStyles.AllowHexSpecifier,
          CultureInfo.InvariantCulture,
          out var res)) {
        return Color.FromArgb(res);
      }
      return Color.Empty;
    }
    set {
      string color = "#" + value.ToArgb().ToString("X").Substring(2, 6);
      SetXmlNodeString(_linecolorPath, color);
    }
  }

  private const string _linewidthPath = "@strokeweight";

  /// <summary>
  /// Width of the border
  /// </summary>
  public Single LineWidth {
    get {
      string wt = GetXmlNodeString(_linewidthPath);
      if (wt == "") {
        return (Single).75;
      }
      if (wt.EndsWith("pt")) {
        wt = wt.Substring(0, wt.Length - 2);
      }

      if (Single.TryParse(wt, NumberStyles.Any, CultureInfo.InvariantCulture, out var ret)) {
        return ret;
      }
      return 0;
    }
    set => SetXmlNodeString(_linewidthPath, value.ToString(CultureInfo.InvariantCulture) + "pt");
  }

  ///// <summary>
  ///// Width of the Comment
  ///// </summary>
  //public Single Width
  //{
  //    get
  //    {
  //        string v;
  //        GetStyle("width", out v);
  //        if(v.EndsWith("pt"))
  //        {
  //            v = v.Substring(0, v.Length - 2);
  //        }
  //        short ret;
  //        if (short.TryParse(v,System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out ret))
  //        {
  //            return ret;
  //        }
  //        else
  //        {
  //            return 0;
  //        }
  //    }
  //    set
  //    {
  //        SetStyle("width", value.ToString("N2",CultureInfo.InvariantCulture) + "pt");
  //    }
  //}
  ///// <summary>
  ///// Height of the Comment
  ///// </summary>
  //public Single Height
  //{
  //    get
  //    {
  //        string v;
  //        GetStyle("height", out v);
  //        if (v.EndsWith("pt"))
  //        {
  //            v = v.Substring(0, v.Length - 2);
  //        }
  //        short ret;
  //        if (short.TryParse(v, System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out ret))
  //        {
  //            return ret;
  //        }
  //        else
  //        {
  //            return 0;
  //        }
  //    }
  //    set
  //    {
  //        SetStyle("height", value.ToString("N2", CultureInfo.InvariantCulture) + "pt");
  //    }
  //}
  private const string _textboxStylePath = "v:textbox/@style";

  /// <summary>
  /// Autofits the drawingobject
  /// </summary>
  public bool AutoFit {
    get {
      GetStyle(GetXmlNodeString(_textboxStylePath), "mso-fit-shape-to-text", out var value);
      return value == "t";
    }
    set =>
      SetXmlNodeString(
          _textboxStylePath,
          SetStyle(GetXmlNodeString(_textboxStylePath), "mso-fit-shape-to-text", value ? "t" : ""));
  }

  private const string _lockedPath = "x:ClientData/x:Locked";

  /// <summary>
  /// If the object is locked when the sheet is protected
  /// </summary>
  public bool Locked {
    get => GetXmlNodeBool(_lockedPath, false);
    set => SetXmlNodeBool(_lockedPath, value, false);
  }

  private const string _lockTextPath = "x:ClientData/x:LockText";

  /// <summary>
  /// Specifies that the object's text is locked
  /// </summary>
  public bool LockText {
    get => GetXmlNodeBool(_lockTextPath, false);
    set => SetXmlNodeBool(_lockTextPath, value, false);
  }

  private ExcelVmlDrawingPosition _from;

  /// <summary>
  /// From position. For comments only when Visible=true.
  /// </summary>
  public ExcelVmlDrawingPosition From {
    get {
      if (_from == null) {
        _from = new(
            NameSpaceManager,
            TopNode.SelectSingleNode("x:ClientData", NameSpaceManager),
            0);
      }
      return _from;
    }
  }

  private ExcelVmlDrawingPosition _to;

  /// <summary>
  /// To position. For comments only when Visible=true.
  /// </summary>
  public ExcelVmlDrawingPosition To {
    get {
      if (_to == null) {
        _to = new(NameSpaceManager, TopNode.SelectSingleNode("x:ClientData", NameSpaceManager), 4);
      }
      return _to;
    }
  }

  private const string _stylePath = "@style";

  internal string Style {
    get => GetXmlNodeString(_stylePath);
    set => SetXmlNodeString(_stylePath, value);
  }

  ulong IRangeId.RangeID {
    get => ExcelCellBase.GetCellId(Range.Worksheet.SheetID, Range.Start.Row, Range.Start.Column);
    set {}
  }
}