/*******************************************************************************
 * 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
 * ******************************************************************************
 * Eyal Seagull        Added       		  2012-04-03
 *******************************************************************************/

using System;
using System.Xml;
using OfficeOpenXml.ConditionalFormatting.Contracts;

namespace OfficeOpenXml.ConditionalFormatting;

public class ExcelConditionalFormattingThreeIconSet
    : ExcelConditionalFormattingIconSetBase<eExcelconditionalFormatting3IconsSetType> {
  internal ExcelConditionalFormattingThreeIconSet(
      ExcelAddress address,
      int priority,
      ExcelWorksheet worksheet,
      XmlNode itemElementNode,
      XmlNamespaceManager namespaceManager)
      : base(
          eExcelConditionalFormattingRuleType.ThreeIconSet,
          address,
          priority,
          worksheet,
          itemElementNode,
          (namespaceManager == null) ? worksheet.NameSpaceManager : namespaceManager) {}
}

/// <summary>
/// ExcelConditionalFormattingThreeIconSet
/// </summary>
public class ExcelConditionalFormattingIconSetBase<T>
    : ExcelConditionalFormattingRule,
      IExcelConditionalFormattingThreeIconSet<T> {
  /// <summary>
  ///
  /// </summary>
  /// <param name="type"></param>
  /// <param name="address"></param>
  /// <param name="priority"></param>
  /// <param name="worksheet"></param>
  /// <param name="itemElementNode"></param>
  /// <param name="namespaceManager"></param>
  internal ExcelConditionalFormattingIconSetBase(
      eExcelConditionalFormattingRuleType type,
      ExcelAddress address,
      int priority,
      ExcelWorksheet worksheet,
      XmlNode itemElementNode,
      XmlNamespaceManager namespaceManager)
      : base(
          type,
          address,
          priority,
          worksheet,
          itemElementNode,
          (namespaceManager == null) ? worksheet.NameSpaceManager : namespaceManager) {
    if (itemElementNode != null && itemElementNode.HasChildNodes) {
      int pos = 1;
      foreach (XmlNode node in itemElementNode.SelectNodes("d:iconSet/d:cfvo", NameSpaceManager)) {
        if (pos == 1) {
          Icon1 = new(type, address, worksheet, node, namespaceManager);
        } else if (pos == 2) {
          Icon2 = new(type, address, worksheet, node, namespaceManager);
        } else if (pos == 3) {
          Icon3 = new(type, address, worksheet, node, namespaceManager);
        } else {
          break;
        }
        pos++;
      }
    } else {
      var iconSetNode = CreateComplexNode(Node, ExcelConditionalFormattingConstants.Paths._iconSet);

      //Create the <iconSet> node inside the <cfRule> node
      double spann;
      if (type == eExcelConditionalFormattingRuleType.ThreeIconSet) {
        spann = 3;
      } else if (type == eExcelConditionalFormattingRuleType.FourIconSet) {
        spann = 4;
      } else {
        spann = 5;
      }

      var iconNode1 = iconSetNode.OwnerDocument.CreateElement(
          ExcelConditionalFormattingConstants.Paths._cfvo,
          ExcelPackage._schemaMain);
      iconSetNode.AppendChild(iconNode1);
      Icon1 = new(
          eExcelConditionalFormattingValueObjectType.Percent,
          0,
          "",
          eExcelConditionalFormattingRuleType.ThreeIconSet,
          address,
          priority,
          worksheet,
          iconNode1,
          namespaceManager);

      var iconNode2 = iconSetNode.OwnerDocument.CreateElement(
          ExcelConditionalFormattingConstants.Paths._cfvo,
          ExcelPackage._schemaMain);
      iconSetNode.AppendChild(iconNode2);
      Icon2 = new(
          eExcelConditionalFormattingValueObjectType.Percent,
          Math.Round(100D / spann, 0),
          "",
          eExcelConditionalFormattingRuleType.ThreeIconSet,
          address,
          priority,
          worksheet,
          iconNode2,
          namespaceManager);

      var iconNode3 = iconSetNode.OwnerDocument.CreateElement(
          ExcelConditionalFormattingConstants.Paths._cfvo,
          ExcelPackage._schemaMain);
      iconSetNode.AppendChild(iconNode3);
      Icon3 = new(
          eExcelConditionalFormattingValueObjectType.Percent,
          Math.Round(100D * (2D / spann), 0),
          "",
          eExcelConditionalFormattingRuleType.ThreeIconSet,
          address,
          priority,
          worksheet,
          iconNode3,
          namespaceManager);
      Type = type;
    }
  }

  /// <summary>
  ///
  /// </summary>
  ///<param name="type"></param>
  /// <param name="priority"></param>
  /// <param name="address"></param>
  /// <param name="worksheet"></param>
  /// <param name="itemElementNode"></param>
  internal ExcelConditionalFormattingIconSetBase(
      eExcelConditionalFormattingRuleType type,
      ExcelAddress address,
      int priority,
      ExcelWorksheet worksheet,
      XmlNode itemElementNode)
      : this(type, address, priority, worksheet, itemElementNode, null) {}

  /// <summary>
  ///
  /// </summary>
  ///<param name="type"></param>
  /// <param name="priority"></param>
  /// <param name="address"></param>
  /// <param name="worksheet"></param>
  internal ExcelConditionalFormattingIconSetBase(
      eExcelConditionalFormattingRuleType type,
      ExcelAddress address,
      int priority,
      ExcelWorksheet worksheet)
      : this(type, address, priority, worksheet, null, null) {}

  /// <summary>
  /// Settings for icon 1 in the iconset
  /// </summary>
  public ExcelConditionalFormattingIconDataBarValue Icon1 { get; internal set; }

  /// <summary>
  /// Settings for icon 2 in the iconset
  /// </summary>
  public ExcelConditionalFormattingIconDataBarValue Icon2 { get; internal set; }

  /// <summary>
  /// Settings for icon 2 in the iconset
  /// </summary>
  public ExcelConditionalFormattingIconDataBarValue Icon3 { get; internal set; }

  private const string _reversePath = "d:iconSet/@reverse";

  /// <summary>
  /// Reverse the order of the icons
  /// </summary>
  public bool Reverse {
    get => GetXmlNodeBool(_reversePath, false);
    set => SetXmlNodeBool(_reversePath, value);
  }

  private const string _showValuePath = "d:iconSet/@showValue";

  /// <summary>
  /// If the cell values are visible
  /// </summary>
  public bool ShowValue {
    get => GetXmlNodeBool(_showValuePath, true);
    set => SetXmlNodeBool(_showValuePath, value);
  }

  private const string _iconSetPath = "d:iconSet/@iconSet";

  /// <summary>
  /// Type of iconset
  /// </summary>
  public T IconSet {
    get {
      var v = GetXmlNodeString(_iconSetPath);
      v = v.Substring(1); //Skip first icon.
      return (T)Enum.Parse(typeof(T), v, true);
    }
    set => SetXmlNodeString(_iconSetPath, GetIconSetString(value));
  }

  private string GetIconSetString(T value) {
    if (Type == eExcelConditionalFormattingRuleType.FourIconSet) {
      switch (value.ToString()) {
        case "Arrows":
          return "4Arrows";
        case "ArrowsGray":
          return "4ArrowsGray";
        case "Rating":
          return "4Rating";
        case "RedToBlack":
          return "4RedToBlack";
        case "TrafficLights":
          return "4TrafficLights";
        default:
          throw (new ArgumentException("Invalid type"));
      }
    }
    if (Type == eExcelConditionalFormattingRuleType.FiveIconSet) {
      switch (value.ToString()) {
        case "Arrows":
          return "5Arrows";
        case "ArrowsGray":
          return "5ArrowsGray";
        case "Quarters":
          return "5Quarters";
        case "Rating":
          return "5Rating";
        default:
          throw (new ArgumentException("Invalid type"));
      }
    }
    switch (value.ToString()) {
      case "Arrows":
        return "3Arrows";
      case "ArrowsGray":
        return "3ArrowsGray";
      case "Flags":
        return "3Flags";
      case "Signs":
        return "3Signs";
      case "Symbols":
        return "3Symbols";
      case "Symbols2":
        return "3Symbols2";
      case "TrafficLights1":
        return "3TrafficLights1";
      case "TrafficLights2":
        return "3TrafficLights2";
      default:
        throw (new ArgumentException("Invalid type"));
    }
  }
}