///////////////////////////////////////////////////////////
//  Bool.cs
//  Implementation of Class RelativeTimeFormatter
//  CSLA type: Read-only object
//  Created on: 10-Sept-2005
//  Object design: John 
//	Coded: 10-Sept-2005
///////////////////////////////////////////////////////////

using System;
using System.Data;
using CSLA.Data;
using GZTW.Data;
using CSLA;
using System.Threading;
using CSLA.Security;
using System.Collections;




namespace GZTW.AyaNova.BLL 
{
	/// <summary>
	/// Used to turn a date and time object
	/// into a string representation which is localized
	/// and relative to current date/time
	/// </summary>
	[Serializable]
	public class RelativeTimeFormatter : ReadOnlyBase 
	{
		// Create a logger for use in this class
		//private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		

		#region Attributes 		
		private string mYears="";
		private string mMonths="";
		private string mWeeks="";
		private string mDays="";
		private string mHours="";
		private string mMinutes="";
		private string mSeconds="";
		private string mPast="";
		private string mFuture="";
		

		#endregion

		#region Constructor	

		/// <summary>
		/// Private constructor to prevent direct instantiation
		/// </summary>
		private RelativeTimeFormatter()
		{			
		}
		#endregion

		#region Business properties
		
		/// <summary>
		/// Convert relative date to string representation
		/// </summary>
		/// <param name="currentdate">Date used as "now".
		/// this is a parameter rather than getting current date/time here
		/// because in a lengthy operation it could vary the display incorrectly</param>
		/// <param name="displaydate">Date to be reformatted into a relative string</param>
		/// <returns>String representation of relative date i.e. "3 days 34 minutes ago"</returns>
		public string Format(DateTime currentdate, DateTime displaydate)
		{
			//take the date relative to now
			//and format into the correct string representation
			bool bPast=false;

			if(currentdate>displaydate)
				bPast=true;

			int Matches=0;

			string strReturn="";

			

//			long years=DateDiff("yyyy",currentdate,displaydate);		
//
//			if(years!=0)
//			{
//				strReturn=AyaBizUtils.SS("",abs(years).ToString() + " " + this.mYears," ");
//				Matches++;
//				currentdate=currentdate.AddYears((int)years);
//			}
//
//			long months=DateDiff("m",currentdate,displaydate);
//			if(months!=0)
//			{
//				strReturn += AyaBizUtils.SS("",abs(months).ToString() +" " +  this.mMonths," ");
//				Matches++;
//				if(Matches>1) goto Done;
//				currentdate=currentdate.AddMonths((int)months);
//			}

			
//			long weeks=DateDiff("w",currentdate,displaydate);
//			if(weeks!=0)
//			{
//				strReturn += AyaBizUtils.SS("",weeks.ToString() + " " + this.mWeeks," ");
//				Matches++;
//				if(Matches>1) goto Done;
//				//currentdate=currentdate.AddWeeks(months);
//			}

			System.TimeSpan ts=currentdate.Subtract(displaydate);
			long days=ts.Days;//currentdate.Subtract(displaydate).Days;
			if(days!=0)
			{
				strReturn += AyaBizUtils.SS("",abs(days).ToString() + " " + this.mDays," ");
				Matches++;
				if(Matches>1) goto Done;
				currentdate=currentdate.AddDays(days);
			}

			long hours=ts.Hours;//currentdate.Subtract(displaydate).Hours;		
			if(hours!=0)
			{
				strReturn += AyaBizUtils.SS("",abs(hours).ToString() + " " + this.mHours," ");
				Matches++;
				if(Matches>1) goto Done;
				currentdate=currentdate.AddHours(hours);
			}

			
			long minutes=ts.Minutes;//currentdate.Subtract(displaydate).Minutes;
			if(minutes!=0)
			{
				strReturn += AyaBizUtils.SS("",abs(minutes).ToString() + " " + this.mMinutes," ");
				Matches++;
				if(Matches>1) goto Done;
				currentdate=currentdate.AddMinutes(minutes);
			}

			long seconds=ts.Seconds;//currentdate.Subtract(displaydate).Seconds;
			if(seconds!=0)
			{
				strReturn += AyaBizUtils.SS("",abs(seconds).ToString() + " " + this.mSeconds," ");
				
			}			


			Done:
				strReturn+=" " +(bPast ? this.mPast:this.mFuture);

			return strReturn;


		}

		/// <summary>
		/// simple abs function
		/// </summary>
		/// <param name="lvalue"></param>
		/// <returns></returns>
		private long abs(long lvalue)
		{
			if(lvalue>0) return lvalue;
			return -lvalue;
		}

	

		/// <summary>
		/// Convert relative SmartDate to string representation
		/// </summary>
		/// <param name="currentdate">Date used as "now".
		/// this is a parameter rather than getting current date/time here
		/// because in a lengthy operation it could vary the display incorrectly</param>
		/// <param name="displaydate">Date to be reformatted into a relative string</param>
		/// <returns>String representation of relative date i.e. "3 days 34 minutes ago"
		/// Or an empty string if the date is empty</returns>
		public string Format(DateTime currentdate,SmartDate displaydate)
		{
			if(displaydate.IsEmpty)
				return "";

			return Format(currentdate,displaydate.Date);
		}
		
		
		
		#endregion

		#region System.Object overrides
		//		public override string ToString()
		//		{
		//			return mBoolValue.ToString();
		//		}
		//
		//		/// 
		//		/// <param Bool="obj"></param>
		//		public override bool Equals(Object obj)
		//		{
		//			if ( obj == null || GetType ( ) != obj.GetType ( ) ) return false;
		//			RelativeTimeFormatter c=(RelativeTimeFormatter)obj;
		//			return mBoolValue==c.mBoolValue;
		//		}
		//
		//		public override int GetHashCode()
		//		{
		//			return ("Bool" + mBoolValue.ToString()).GetHashCode();
		//		}

		#endregion

		#region Static methods
		

		/// <summary>
		/// Get all descriptive text for all time spans displayed in AyaNova in one trip to the database
		/// </summary>
		/// <param name="Language">Locale desired</param>
		/// <returns></returns>
		public static RelativeTimeFormatter GetItem(string Language)
		{	
			////case 1039 //log.Debug("RelativeTimeFormatter.GetItem("+Language +")");	
			return (RelativeTimeFormatter)DataPortal.Fetch(new Criteria( Language));
			
		}


		
		
		#endregion

		#region DAL DATA ACCESS
		/// 
		/// <param Bool="Criteria"></param>
		protected override void DataPortal_Fetch(object Criteria)
		{	
			Criteria crit = (Criteria)Criteria;		
			SafeDataReader dr = null;	
			try
			{	
		
				DBCommandWrapper dbCommandWrapper = DBUtil.DB.GetSqlStringCommandWrapper(
					"SELECT aDisplayText, aDisplayTextCustom, aKey FROM aLocalizedText " +
					"WHERE (aKey LIKE @PARAM) AND (aLocale = @Locale) " +
					"ORDER BY aKey"
					);
				dbCommandWrapper.AddInParameter("@PARAM",DbType.String,"UI.Label.TimeSpan.%");
				dbCommandWrapper.AddInParameter("@Locale",DbType.String,crit.Language);
				dr = new SafeDataReader(DBUtil.DB.ExecuteReader(dbCommandWrapper));
					
				string Text="";
				string Key="";
				
				
				while(dr.Read()) 
				{
					//*******************************************
					//If there is no custom text then add the stock text
					if(dr.GetString("aDisplayTextCustom").Length<1)
						Text = dr.GetString("aDisplayText");
					else//It's custom, add the custom text instead
						Text = dr.GetString("aDisplayTextCustom");

					Key=dr.GetString("aKey");
					switch(Key)
					{
						case "UI.Label.TimeSpan.Years":
							this.mYears=Text;
							break;
						case "UI.Label.TimeSpan.Months":
							this.mMonths=Text;
							break;
						case "UI.Label.TimeSpan.Weeks":
							this.mWeeks=Text;
							break;
						case "UI.Label.TimeSpan.Days":
							this.mDays=Text;
							break;
						case "UI.Label.TimeSpan.Hours":
							this.mHours=Text;
							break;
						case "UI.Label.TimeSpan.Minutes":
							this.mMinutes=Text;
							break;
						case "UI.Label.TimeSpan.Seconds":
							this.mSeconds=Text;
							break;
						case "UI.Label.TimeSpan.FutureRelative":
							this.mFuture=Text;
							break;
						case "UI.Label.TimeSpan.PastRelative":
							this.mPast=Text;
							break;
					}

					//*******************************************
				}
			}
			finally
			{
				if(dr!=null) dr.Close();
			}

			
		}

		
		
		#endregion			

		#region criteria
		/// <summary>
		/// Criteria for identifying existing object
		/// </summary>
		[Serializable]
			private class Criteria
		{
			 public string Language;
			
			

			public Criteria(string _Language)
			{
				Language=_Language;
				
				
			}
			
		}
		#endregion
		
	}//end Class

}//end Namespace