///////////////////////////////////////////////////////////
//  UIGridLayoutShared.cs
//  Implementation of Class UIGridLayoutShared
//  CSLA type: Editable Root 
//  Created on: 20-March-2006
//  Object design: John 
//	Coded: John 20-March-2006
///////////////////////////////////////////////////////////

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

namespace GZTW.AyaNova.BLL 
{
	/// <summary>
	/// User interface grid layout preferences
	/// Used to store and retrieve user and default
	/// layouts for all grid objects in user interface
	/// </summary>
	[Serializable]
	public class UIGridLayoutShared : BusinessBase 
	{

		#region Attributes 

		private Guid mID;
		private SmartDate mCreated;
		private SmartDate mModified;
		private Guid mCreator;
		private Guid mModifier;		
		
		private string mGridKey=null;
		
		private string mName="";
		private int mLayoutSize;
		private byte[] mLayoutContent;

		

		#endregion

		#region Constructor	

		/// <summary>
		/// Private constructor to prevent direct instantiation
		/// </summary>
		private UIGridLayoutShared()
		{
			
			//New ID
			mID = Guid.NewGuid();
			//prebreak the rule
			Name="";
			mCreated = new SmartDate(DBUtil.CurrentWorkingDateTime);
			mModified=new SmartDate();
			mCreator=Guid.Empty;
			mModifier=Guid.Empty;
			//pre-break the rules
			this.GridKey="";
		
		}
		#endregion

		#region Business properties
		

		/// <summary>
		/// Get created date
		///
		/// 
		/// </summary>
		public string Created 
		{
			get
			{
				return mCreated.ToString();
			}
		}

		/// <summary>
		/// Get modified date
		///
		/// 
		/// </summary>
		public string Modified 
		{
			get
			{
				return mModified.ToString();
			}
		}

		/// <summary>
		/// Get user record ID of person who created this record
		///
		/// 
		/// </summary>
		public Guid Creator 
		{
			get
			{
				return mCreator;
			}
		}

		/// <summary>
		/// Get user ID of person who modified this record
		///
		/// 
		/// </summary>
		public Guid Modifier 
		{
			get
			{
				return mModifier;
			}
		}


		/// <summary>
		/// Size of binary layout data content
		/// </summary>
		public int LayoutSize
		{
			get
			{
				return mLayoutSize;
			}
			set
			{
				if(mLayoutSize!=value)
				{
					mLayoutSize=value;
					MarkDirty();
				}
			}
		}

		
		//These are done as methods rather
		//than property accessors because
		//of an efficiency problem with binary data
		//and properties
		
		/// <summary>
		/// Get Document binary data
		/// </summary>
		/// <returns></returns>
		public byte[] GetLayoutContent()
		{
			return mLayoutContent;
		}

		/// <summary>
		/// Set document binary data
		/// </summary>
		/// <param name="bData"></param>
		public void SetLayoutContent(byte[] bData)
		{			
			mLayoutContent=bData;
			MarkDirty();
			
		}



		/// <summary>
		/// Set/get GridKey of item
		/// 
		/// </summary>
		public string GridKey 
		{
			get
			{
				return mGridKey;
			}
			set
			{
			
				if(mGridKey!=value)
				{
					mGridKey = value;

					BrokenRules.Assert("GridKeyRequired","Error.Object.RequiredFieldEmpty,UIGridLayoutShared.Label.GridKey","GridKey",value.Length==0);
					
					BrokenRules.Assert("GridKeyLength",
						"Error.Object.FieldLengthExceeded255,UIGridLayoutShared.Label.GridKey","GridKey",value.Length>255);
											
					MarkDirty();
					
				}
			}
		}

		




		/// <summary>
		/// Set/get Name of item
		/// 
		/// 
		/// </summary>
		public string Name 
		{
			get
			{
				return mName;
			}
			set
			{
			
				if(mName!=value)
				{
					mName = value;

					BrokenRules.Assert("NameRequired",
						"Error.Object.RequiredFieldEmpty,UIGridLayoutShared.Label.Name",
						"Name",value.Length==0);

					BrokenRules.Assert("NameLength",
						"Error.Object.FieldLengthExceeded255,UIGridLayoutShared.Label.Name","Name",value.Length>255);
						
					MarkDirty();
						
				}
			}
		}
		


		#endregion

		#region System.Object overrides
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
		public override string ToString()
		{
			return "UIGridLayoutShared" + mGridKey+" - " +mName;
		}

		/// <summary>
		/// 
		/// </summary>
		/// <param name="obj"></param>
		/// <returns></returns>
		public override bool Equals(Object obj)
		{
			if ( obj == null || GetType ( ) != obj.GetType ( ) ) return false;
			UIGridLayoutShared c=(UIGridLayoutShared)obj;
			return ((mID==c.mID));
		}
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
		public override int GetHashCode()
		{
			return ("UIGridLayoutShared" + mID).GetHashCode();
		}
		#endregion

		#region Static methods
		/// <summary>
		/// Get new object
		/// </summary>
		/// <returns></returns>
		public static UIGridLayoutShared NewItem()
		{					
			return new UIGridLayoutShared();

		}

		/// <summary>
		/// Fetch shared Grid layout requested
		/// 
		/// </summary>
		/// <param name="_ID"></param>
		/// <returns></returns>
		public static UIGridLayoutShared GetItem(Guid _ID)
		{
			return (UIGridLayoutShared)DataPortal.Fetch(new Criteria(_ID));
			
		}


		#endregion

		#region DAL DATA ACCESS
		
		#region Fetch
		/// 
		/// <param name="Criteria"></param>
		protected override void DataPortal_Fetch(object Criteria)
		{
			

			Criteria crit = (Criteria)Criteria;
			SafeDataReader dr = null;	
				
			try
			{
				DBCommandWrapper dbCommandWrapper = DBUtil.DB.GetSqlStringCommandWrapper(
					"SELECT * from aUIGridLayoutShared WHERE " +
					"aUIGridLayoutShared.aID=@ID"
					);
				dbCommandWrapper.AddInParameter("@ID",DbType.Guid,crit.ID);
				
				dr= new SafeDataReader(DBUtil.DB.ExecuteReader(dbCommandWrapper));
					
				if(dr.Read())
				{

					//Standard fields
					mCreated=DBUtil.ToLocal(dr.GetSmartDate("aCreated"));
					mModified=DBUtil.ToLocal(dr.GetSmartDate("aModified"));
					mCreator=dr.GetGuid("aCreator");
					mModifier=dr.GetGuid("aModifier");
												
					
					//UIGridLayoutShared fields
					
					//Unbreaking property style
					Name=dr.GetString("aName");					

					mLayoutSize=dr.GetInt32("aLayoutSize");
					mID=crit.ID;

					//Important: use property not internal field
					//so that initial broken rule is unbroken on fetch
					GridKey=dr.GetString("aGridKey");
					
					//Get the number of bytes
					mLayoutContent=new Byte[mLayoutSize];
					//retrieve the bytes
					dr.GetBytes("aLayoutContent",0,mLayoutContent,0,mLayoutContent.Length);
				}
					
			}
			finally
			{
				if(dr!=null) dr.Close();
			}
			MarkOld();

				

		}
		#endregion fetch

		#region Update

		/// <summary>
		/// Called by DataPortal to delete/add/update data into the database
		/// </summary>
		protected override void DataPortal_Update()
		{
			//Apparently no concurrency check for this as it wasn't in the old data layer code when ported
			//makes sense as long as users aren't logging in with same account at more than one station
			
			#region Delete
			if(IsDeleted)
			{
				if(!IsNew)
				{
					

					//Delete object and child objects
					DBCommandWrapper cmDelete = DBUtil.GetCommandFromSQL(
						"DELETE FROM aUIGridLayoutShared WHERE aID=@ID");
					cmDelete.AddInParameter("@ID",DbType.Guid,this.mID);
									
										
					using (IDbConnection connection = DBUtil.DB.GetConnection())
					{
						connection.Open();
						IDbTransaction transaction = connection.BeginTransaction();

						try
						{
					
							DBUtil.DB.ExecuteNonQuery(cmDelete, transaction);
							
							// Commit the transaction
							transaction.Commit();
							
						}
						catch
						{
							// Rollback transaction 
							transaction.Rollback();
							throw;
						}
						finally
						{
							connection.Close();
						}
					}		
					

					//-----------------------------
				}
				MarkNew();
				return;
			}

			#endregion


			#region Add / Update
            
			//get modification time temporarily, if update succeeds then
			//set to this time
			System.DateTime dtModified = DBUtil.CurrentWorkingDateTime;

			DBCommandWrapper cm = null;
			if(IsNew)//Add or update?
				cm=DBUtil.GetCommandFromSQL(
					"INSERT INTO aUIGridLayoutShared (aGridKey,  " +
					"aName, aLayoutSize, aLayoutContent, " +
					"aCreated,aModified,aCreator,aModifier) VALUES (@GridKey, " +
					"@Name,@LayoutSize,@LayoutContent,@Created,@Modified,@CurrentUserID, " +
					"@CurrentUserID)"
					);
			else
				cm=DBUtil.GetCommandFromSQL(
					"UPDATE aUIGridLayoutShared SET aGridKey=@GridKey, " +
					"aName=@Name, " +
					"aLayoutSize=@LayoutSize, aLayoutContent=@LayoutContent, " +
					"aModifier=@CurrentUserID, " +
					"aModified=@Modified WHERE aUIGridLayoutShared.aID=@ID "
					);

			cm.AddInParameter("@ID",DbType.Guid, mID);
			cm.AddInParameter("@GridKey",DbType.String,this.mGridKey);
			cm.AddInParameter("@Name",DbType.String,mName);					
			cm.AddInParameter("@LayoutSize",DbType.Int32,mLayoutSize);
			cm.AddInParameter("@LayoutContent",DbType.Object,mLayoutContent);
			
			//Standard fields
			cm.AddInParameter("@CurrentUserID",DbType.Guid, CurrentUserID);
			cm.AddInParameter("@Created",DbType.DateTime, DBUtil.ToUTC(mCreated).DBValue);
			cm.AddInParameter("@Modified",DbType.DateTime, DBUtil.ToUTC(dtModified));
					
			

			using (IDbConnection connection = DBUtil.DB.GetConnection())
			{
				connection.Open();
				IDbTransaction transaction = connection.BeginTransaction();

				try
				{
					
					DBUtil.DB.ExecuteNonQuery(cm, transaction);
					MarkOld();//db is now synched with object

					// Commit the transaction
					transaction.Commit();
					
				}
				catch
				{
					// Rollback transaction 
					transaction.Rollback();
					throw;
				}
				finally
				{
					connection.Close();
				}
				//Successful update so 
				//change modification time to match
				this.mModified.Date=dtModified;
			}			

			#endregion

			
		}
		#endregion update

		
		
		#endregion	

		#region Override IsValid / IsDirty
		//Override base class version if there are child objects 
		/*
			public override bool IsValid
			{
				get
				{
					return base.IsValid && ChildItem.IsValid;
				}
			}
			public override bool IsDirty
			{
				get
				{
					return base.IsDirty || ChildItem.IsDirty;
				}
			}
			*/
		#endregion

		
		#region criteria
		/// <summary>
		/// Criteria for identifying existing object
		/// </summary>
		[Serializable]
			private class Criteria
		{
			public Guid ID;
			public Criteria(Guid _ID)
			{
				ID=_ID;
			}
			
		}
		#endregion
		
	}//end UIGridLayoutShared

}//end namespace GZTW.AyaNova.BLL