///////////////////////////////////////////////////////////
//  TaskGroupTask.cs
//  Implementation of Class TaskGroupTask
//  CSLA type: Editable Child 
//  Created on: 29-July-2004 
//  Object design: John     
//	Coded: John 29-July-2004
///////////////////////////////////////////////////////////

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

namespace GZTW.AyaNova.BLL 
{
	/// <summary>
	/// Individual <see cref="Task"/> assignment to a <see cref="TaskGroup"/>
	/// </summary>
	[Serializable]
	public class TaskGroupTask : BusinessBase 
	{

		#region Attributes 

		private bool bReadOnly;
		
		private Guid mID;
		private Guid mCreator;
		private Guid mModifier;
		private SmartDate mCreated;
		private SmartDate mModified;
		
		
		
		private Guid mTaskID;
		/// <summary>
		/// ID of TaskGroup this task belongs with
		/// </summary>
		private Guid mTaskGroupID;
		
        //Case 319
        private bool mActive;


		#endregion

		#region Constructor
		private TaskGroupTask()
		{
			//Set to read / write initially so that properties
			//can be set
			bReadOnly=false;

			//Child object
			MarkAsChild();

			//New ID
			mID = Guid.NewGuid();

			//Set record history to defaults
			mCreated = new SmartDate(DBUtil.CurrentWorkingDateTime);
			mModified=new SmartDate();
			mCreator=Guid.Empty;
			mModifier=Guid.Empty;
		}
		#endregion

		#region BusinessProperties
		
		//---Common properties
		/// <summary>
		/// Initial created date of this object
		/// </summary>
		public string Created 
		{
			get
			{
				return mCreated.ToString();
			}
		}
		/// <summary>
		/// User ID of who initially created this object
		/// </summary>
		public Guid Creator 
		{
			get
			{
				return mCreator;
			}
		}
		/// <summary>
		/// Last modified date of this object
		/// </summary>
		public string Modified 
		{
			get
			{
				return mModified.ToString();
			}
		}

		/// <summary>
		/// User ID of who last modified this object
		/// </summary>
		public Guid Modifier 
		{
			get
			{
				return mModifier;
			}
		}

		/// <summary>
		/// Unique ID of this object
		/// </summary>
		public Guid ID 
		{
			get
			{
				return mID;
			}
		}


		//---TaskGroupTask specific properties

		
        /// <summary>
        /// <see cref="Task"/> ID
        /// </summary>
		public Guid TaskID 
		{
			get
			{
				return mTaskID;
			}
			set
			{
				if(bReadOnly)
					ThrowSetError();
				else
				{
					if(mTaskID!=value)
					{
						mTaskID = value;
						MarkDirty();
						
					}
				}
			}
		}

		/// <summary>
		/// ID of TaskGroup this task belongs with
		/// </summary>
		public Guid TaskGroupID 
		{
			get
			{
				return mTaskGroupID;
			}
			set
			{
				if(bReadOnly)
					ThrowSetError();
				else
				{
					if(mTaskGroupID!=value)
					{
						mTaskGroupID = value;
						MarkDirty();
						
					}
				}
			}
		}

        //Case 319
        /// <summary>
        /// Read only flag indicating if Task this task group task was
        /// created from is active or not.
        /// </summary>
        public bool Active
        {
            get
            {
                return mActive;
            }
        }

		/// <summary>
		/// Throw an error when a read only user 
		/// tries to set a property
		/// (this should normally never be called unless someone is using the developer api since the UI
		/// should prevent it from happening initially)
		/// </summary>
		private void ThrowSetError()
		{
			throw new System.Security.SecurityException
				(
				string.Format
				(
				LocalizedTextTable.GetLocalizedTextDirect("Error.Security.NotAuthorizedToChange"),
				LocalizedTextTable.GetLocalizedTextDirect("TaskGroupO.Task")
				)
				);
		}

		#endregion

		#region System.object overrides
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
		public override string ToString()
		{
			return "TaskGroupTask" + mID.ToString();
		}

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

		#region Static methods
		/// <summary>
		/// Create item
		/// </summary>
		/// <param name="obj">Parent ID</param>
		/// <returns>New Item</returns>
		internal static TaskGroupTask NewItem(TaskGroup obj)
		{
			
			if(AyaBizUtils.Right("Object.TaskGroupTask")>(int)SecurityLevelTypes.ReadOnly)
			{
				TaskGroupTask child=new TaskGroupTask();
				child.TaskID=Guid.Empty;
				child.mTaskGroupID=obj.ID;	
				return child;
			}
			else
				throw new System.Security.SecurityException(
					string.Format(
					LocalizedTextTable.GetLocalizedTextDirect("Error.Security.NotAuthorizedToCreate"),
					LocalizedTextTable.GetLocalizedTextDirect("TaskGroupO.Task")));
			
		}

		/// <summary>
		/// Retrieve item
		/// </summary>
		/// <param name="dr">Data reader</param>
		/// <returns>item from database</returns>
		internal static TaskGroupTask GetItem(SafeDataReader dr)
		{

			
			if(AyaBizUtils.Right("Object.TaskGroupTask")>(int)SecurityLevelTypes.NoAccess)	
			{
				TaskGroupTask child = new TaskGroupTask();
				child.Fetch(dr);
				return child;
			}
			else
				throw new System.Security.SecurityException(
					string.Format(
					LocalizedTextTable.GetLocalizedTextDirect("Error.Security.NotAuthorizedToRetrieve"),
					LocalizedTextTable.GetLocalizedTextDirect("TaskGroupO.Task")));
		}
		#endregion
		
		#region DAL DATA ACCESS

		#region Fetch
		/// <summary>
		/// Fetch from db
		/// </summary>
		/// <param name="dr"></param>
		private void Fetch(SafeDataReader dr)
		{
			//Standard items
			mCreated=DBUtil.ToLocal(dr.GetSmartDate("aCreated"));
			mCreator=dr.GetGuid("aCreator");
			mModified=DBUtil.ToLocal(dr.GetSmartDate("aModified"));
			mModifier=dr.GetGuid("aModifier");
			mID=dr.GetGuid("aID");

			//TaskGroupTask specific parameters
			mTaskID=dr.GetGuid("aTaskID");
			mTaskGroupID=dr.GetGuid("aTaskGroupID");
			
            //Case 319
            mActive = dr.GetBoolean("AACTIVE");

			//Get access rights level
			bReadOnly=AyaBizUtils.Right("Object.TaskGroupTask")<(int)SecurityLevelTypes.ReadWrite;

			MarkOld();
	
		}
		#endregion fetch

		#region Update

		/// <summary>
		/// Persist object to database
		/// </summary>
		/// <param name="obj">Parent object</param>
		/// <param name="tr">Parents transaction object</param>
		internal void Update(TaskGroup obj,IDbTransaction tr)
		{
			//No need to update if there is nothing changed
			if(!this.IsDirty) return;

			// If not a new record, check if record was modified 
			//by another user since original retrieval:
			if(!IsNew)
				DBUtil.CheckSafeToUpdate(this.mModified.Date,this.mID,"aTaskGroupTask");	
			
			#region Delete
			if(IsDeleted)
			{
				if(!IsNew)
				{
					//Delete object and child objects
					DBCommandWrapper cmDelete = DBUtil.GetCommandFromSQL("DELETE FROM aTaskGroupTask WHERE aID = @ID;");
					cmDelete.AddInParameter("@ID",DbType.Guid,this.mID);
					DBUtil.DB.ExecuteNonQuery(cmDelete, tr);
				}
				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 aTaskGroupTask (aTaskID, aID, aTaskGroupID, " +
					"aCreated,aModified,aCreator,aModifier) VALUES (@TaskID,@ID,@TaskGroupID, " +
					"@Created,@Modified,@CurrentUserID,@CurrentUserID)"
					);
			else
				cm=DBUtil.GetCommandFromSQL(
					"UPDATE aTaskGroupTask SET aTaskID=@TaskID, aID=@ID, " +
					"aTaskGroupID=@TaskGroupID, aModifier=@CurrentUserID, " +
					"aModified=@Modified WHERE aID=@ID"
					);


			//TaskGroupTask specific parameters
			cm.AddInParameter("@ID",DbType.Guid,this.mID);			
			cm.AddInParameter("@TaskID",DbType.Guid,mTaskID);
			cm.AddInParameter("@TaskGroupID",DbType.Guid,mTaskGroupID);		
			
			//Standard fields
			cm.AddInParameter("@CurrentUserID",DbType.Guid, CurrentUserID);
			cm.AddInParameter("@Created",DbType.DateTime, DBUtil.ToUTC(mCreated.Date));
			cm.AddInParameter("@Modified",DbType.DateTime, DBUtil.ToUTC(dtModified));
					
			DBUtil.DB.ExecuteNonQuery(cm, tr);
			
			MarkOld();//db is now synched with object
			//Successful update so 
			//change modification time to match
			this.mModified.Date=dtModified;	
			#endregion					
		

			
		}

		#endregion update

		#endregion
		
	}//end TaskGroupTask

}//end namespace GZTW.AyaNova.BLL