using System;
using System.Globalization;
using System.Threading;
using CPF.ReoGrid.Core;
using CPF.ReoGrid.Utility;

namespace CPF.ReoGrid.DataFormat
{
	public class DateTimeDataFormatter : IDataFormatter
	{
		public static DateTime BaseStartDate
		{
			get
			{
				return DateTimeDataFormatter.baseStartDate;
			}
			set
			{
				DateTimeDataFormatter.baseStartDate = value;
			}
		}

		public string FormatCell(Cell cell)
		{
			object innerData = cell.InnerData;
			bool flag = false;
			DateTime value = DateTimeDataFormatter.baseStartDate;
			string text = null;
			bool flag2 = innerData is DateTime;
			if (flag2)
			{
				value = (DateTime)innerData;
				flag = true;
			}
			else
			{
				double d;
				bool flag3 = CellUtility.TryGetNumberData(innerData, out d);
				if (flag3)
				{
					try
					{
						value = DateTime.FromOADate(d);
						flag = true;
					}
					catch
					{
					}
				}
				else
				{
					string s = (innerData is string) ? ((string)innerData) : Convert.ToString(innerData);
					double value2 = 0.0;
					bool flag4 = double.TryParse(s, out value2);
					if (flag4)
					{
						try
						{
							value = value.AddDays(value2);
							flag = true;
						}
						catch
						{
						}
					}
					else
					{
						flag = DateTime.TryParse(s, out value);
					}
				}
			}
			bool flag5 = flag;
			if (flag5)
			{
				bool flag6 = cell.InnerStyle.HAlign == ReoGridHorAlign.General;
				if (flag6)
				{
					cell.RenderHorAlign = ReoGridRenderHorAlign.Right;
				}
				string text2 = Thread.CurrentThread.CurrentCulture.DateTimeFormat.ShortDatePattern;
				bool flag7 = cell.DataFormatArgs != null && cell.DataFormatArgs is DateTimeDataFormatter.DateTimeFormatArgs;
				CultureInfo cultureInfo;
				if (flag7)
				{
					DateTimeDataFormatter.DateTimeFormatArgs dateTimeFormatArgs = (DateTimeDataFormatter.DateTimeFormatArgs)cell.DataFormatArgs;
					bool flag8 = !string.IsNullOrEmpty(dateTimeFormatArgs.Format);
					if (flag8)
					{
						text2 = dateTimeFormatArgs.Format;
					}
					cultureInfo = ((dateTimeFormatArgs.CultureName == null || string.Equals(dateTimeFormatArgs.CultureName, Thread.CurrentThread.CurrentCulture.Name)) ? Thread.CurrentThread.CurrentCulture : new CultureInfo(dateTimeFormatArgs.CultureName));
				}
				else
				{
					cultureInfo = Thread.CurrentThread.CurrentCulture;
					cell.DataFormatArgs = new DateTimeDataFormatter.DateTimeFormatArgs
					{
						Format = text2,
						CultureName = cultureInfo.Name
					};
				}
				bool flag9 = cultureInfo.Name.StartsWith("ja") && text2.Contains("g");
				if (flag9)
				{
					cultureInfo = new CultureInfo("ja-JP", true);
					cultureInfo.DateTimeFormat.Calendar = new JapaneseCalendar();
				}
				try
				{
					string text3 = text2;
					string a = text3;
					if (!(a == "d"))
					{
						text = value.ToString(text2, cultureInfo);
					}
					else
					{
						text = value.Day.ToString();
					}
				}
				catch
				{
					text = Convert.ToString(value);
				}
			}
			return flag ? text : null;
		}

		public bool PerformTestFormat()
		{
			return true;
		}

		private static DateTime baseStartDate = new DateTime(1900, 1, 1);

		[Serializable]
		public struct DateTimeFormatArgs
		{
			public string Format
			{
				get
				{
					return this.format;
				}
				set
				{
					this.format = value;
				}
			}

			public string CultureName
			{
				get
				{
					return this.cultureName;
				}
				set
				{
					this.cultureName = value;
				}
			}

			public override bool Equals(object obj)
			{
				bool flag = !(obj is DateTimeDataFormatter.DateTimeFormatArgs);
				bool result;
				if (flag)
				{
					result = false;
				}
				else
				{
					DateTimeDataFormatter.DateTimeFormatArgs dateTimeFormatArgs = (DateTimeDataFormatter.DateTimeFormatArgs)obj;
					result = (this.format.Equals(dateTimeFormatArgs.format) && this.cultureName.Equals(dateTimeFormatArgs.cultureName));
				}
				return result;
			}

			public override int GetHashCode()
			{
				return this.format.GetHashCode() ^ this.cultureName.GetHashCode();
			}

			private string format;

			private string cultureName;
		}
	}
}