///////////////////////////////////////////////////////////
//  TaskGroup.cs
//  Implementation of Class TaskGroup
//  CSLA type: Editable Root 
//  Created on: 07-Jun-2004 8:41:36 AM
//  Object design: Joyce      
//	Coded: John 29-Jul-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>
	/// TaskGroup - a preselected group of individual tasks
	/// that can be used to quickly select a slew of tasks
	/// with one selection
	/// </summary>
	[Serializable]
	public class TaskGroup : BusinessBase {

		#region Attributes 
		private bool bReadOnly;
		private Guid mID;
		private string mName=null;
		private SmartDate mCreated;
		private SmartDate mModified;
		private bool mActive;
		private Guid mCreator;
		private Guid mModifier;
		private string mDescription="";
		private TaskGroupTasks mTaskGroupTasks;
		

		#endregion

		#region Constructor

		/// <summary>
		/// Private constructor to prevent direct instantiation
		/// </summary>
		private TaskGroup()
		{
			

			
			//Set to read / write initially so that properties
			//can be set
			bReadOnly=false;

			//New ID
			mID = Guid.NewGuid();
            Name = DBUtil.CurrentWorkingDateTime.ToString();
			Active=true;
			mTaskGroupTasks=TaskGroupTasks.NewItems();

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

		#endregion

		#region Business properties
		/// <summary>
		/// Get internal id number Read only property because it's set internally, not
		/// externally
		/// </summary>
		public Guid ID 
		{
			get
			{
				return mID;
			}
		}

		/// <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>
		/// Set/get client group name 
		/// </summary>
		public string Name 
		{
			get
			{
				return mName;
			}
			set
			{
				if(bReadOnly)
					ThrowSetError();
				else
				{
					if(mName!=value)
					{
						mName = value;

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

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

		/// <summary>
		/// Get /set active status of client group
		/// If active = true then TaskGroup is selectable for workorders etc
		/// If active = false then TaskGroup in not selectable, but history can be
		/// viewed
		/// </summary>
		public bool Active 
		{
			get
			{
				return mActive;
			}
			set
			{
				if(bReadOnly)
					ThrowSetError();
				else
				{
					if(mActive!=value)
					{
						mActive = value;
						MarkDirty();
						
					}
				}
			}
		}

        /// <summary>
        /// Displayed text describing TaskGroup in UI
        /// </summary>
		public string Description 
		{
			get
			{
				return mDescription;
			}
			set
			{
				if(bReadOnly)
					ThrowSetError();
				else
				{
					if(mDescription!=value)
					{
						mDescription = value;
						MarkDirty();
						
					}
				}
			}
		}
		/// <summary>
		/// Tasks collection
		/// </summary>
		public TaskGroupTasks Tasks 
		{
			get
			{
				return mTaskGroupTasks;
			}
			
		}
		/// <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("O.TaskGroup")
				)
				);
		}
		#endregion

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

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

		#endregion 

		#region Searching

		/// <summary>
		/// Returns a search result object based on search terms
		/// for the ID specified
		/// </summary>
		/// <param name="ID"></param>
		/// <param name="searchTerms"></param>
		/// <returns></returns>
		public static SearchResult GetSearchResult(Guid ID, string[]searchTerms)
		{

			
			if(AyaBizUtils.Right("Object.TaskGroup")<(int)SecurityLevelTypes.ReadOnly)
				return new SearchResult();

			SearchResult sr=new SearchResult();
			System.Text.StringBuilder sb = new System.Text.StringBuilder();
				
				
				SafeDataReader dr = null;	
				try
				{
					dr=DBUtil.GetReaderFromSQLString(

						"SELECT aCreated, aModified, aCreator, aModifier, aName, " +
						" aDescription FROM aTaskGroup WHERE (aID = @ID)"
						,ID);

					if(!dr.Read())
						return new SearchResult();//DBUtil.ThrowFetchError("SearchResult for ClientID: " + ID.ToString());
					
						
							sr.Description=dr.GetString("aName");
							sb.Append(sr.Description);

							sb.Append(" ");
							sb.Append(dr.GetString("aDescription"));
							
							sr.Created=DBUtil.ToLocal(dr.GetSmartDate("aCreated"));
							sr.Modified=DBUtil.ToLocal(dr.GetSmartDate("aModified"));
							sr.Creator=dr.GetGuid("aCreator");
							sr.Modifier=dr.GetGuid("aModifier");
							
						
							

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

				

			//Formulate results
			ExtractAndRank er = new ExtractAndRank();
			er.Process(sb.ToString().Trim(),searchTerms);
			sr.Extract=er.Extract;
			sr.Rank=er.Ranking;
			sr.AncestorRootObjectID=ID;
			sr.AncestorRootObjectType=RootObjectTypes.TaskGroup;
			
			return sr;

		}

		#endregion

		#region Static methods
		/// <summary>
		/// Create new TaskGroup
		/// </summary>
		public static TaskGroup NewItem()
		{
			
			
			if(AyaBizUtils.Right("Object.TaskGroup")>(int)SecurityLevelTypes.ReadOnly)			
				return new TaskGroup();
			else
				throw new System.Security.SecurityException(
					string.Format(
					LocalizedTextTable.GetLocalizedTextDirect("Error.Security.NotAuthorizedToCreate"),
					LocalizedTextTable.GetLocalizedTextDirect("O.TaskGroup")));
			
		}

		/// <summary>
		/// Fetch existing TaskGroup
		/// </summary>
		/// <param name="_ID">Client Guid</param>
		public static TaskGroup GetItem(Guid _ID)
		{
			
			if(AyaBizUtils.Right("Object.TaskGroup")>(int)SecurityLevelTypes.NoAccess)			
				return (TaskGroup)DataPortal.Fetch(new Criteria(_ID));
			else
				throw new System.Security.SecurityException(
					string.Format(
					LocalizedTextTable.GetLocalizedTextDirect("Error.Security.NotAuthorizedToRetrieve"),
					LocalizedTextTable.GetLocalizedTextDirect("O.TaskGroup")));
		}

		/// <summary>
		/// Delete TaskGroup (if clients assigned to this group, should be notified)
		/// </summary>
		/// <param name="_ID">Client GUID</param>
		public static void DeleteItem(Guid _ID)
		{
			
			if(AyaBizUtils.Right("Object.TaskGroup")>(int)SecurityLevelTypes.ReadWrite)			
				DataPortal.Delete(new Criteria(_ID));
			else
				throw new System.Security.SecurityException(
					string.Format(
					LocalizedTextTable.GetLocalizedTextDirect("Error.Security.NotAuthorizedToDelete"),
					LocalizedTextTable.GetLocalizedTextDirect("O.TaskGroup")));
		}

        /// <summary>
        /// Retrieve internal ID from name.
        /// 
        /// </summary>
        /// <param name="Name">Text value</param>
        /// <returns>Guid ID value or Guid.Empty if no match</returns>
        public static Guid GetIDFromName(string Name)
        {
            return GuidFetcher.GetItem("ATASKGROUP", "ANAME", Name);
        }
		#endregion

		#region DAL DATA ACCESS
		
		#region Fetch
		/// 
		/// <param name="Criteria"></param>
		protected override void DataPortal_Fetch(object Criteria)
		{
			//set to false to load items initially
			bReadOnly=false;

			Criteria crit = (Criteria)Criteria;
			SafeDataReader dr = null;	
				
			try
			{
				dr=DBUtil.GetReaderFromSQLString("SELECT * FROM aTaskGroup WHERE aID=@ID;",crit.ID);
				if(!dr.Read())
					DBUtil.ThrowFetchError("TaskGroup ID: " + crit.ID.ToString());

					
				//Standard fields
				mID=dr.GetGuid("aID");
				mCreated=DBUtil.ToLocal(dr.GetSmartDate("aCreated"));
				mModified=DBUtil.ToLocal(dr.GetSmartDate("aModified"));
				mCreator=dr.GetGuid("aCreator");
				mModifier=dr.GetGuid("aModifier");
									
					
				//TaskGroup fields
				Active=dr.GetBoolean("AACTIVE");

				//Important: use property not internal field
				//so that initial broken rule is unbroken on fetch
				Name=dr.GetString("aName");					

				Description=dr.GetString("aDescription");
				if(dr!=null) dr.Close();

				//Tasks child collection
                
                //Case 319 changes
                //dr = DBUtil.GetReaderFromSQLString("SELECT * FROM aTaskGroupTask WHERE (aTaskGroupID=@ID);", crit.ID);	
                dr = DBUtil.GetReaderFromSQLString(
                    "SELECT ATASKGROUPTASK.*, ATASK.AACTIVE FROM aTaskGroupTask INNER JOIN " +
                      "ATASK ON ATASKGROUPTASK.ATASKID = ATASK.AID WHERE (aTaskGroupID=@ID);", crit.ID);					
				
                
                mTaskGroupTasks = TaskGroupTasks.GetItems(dr);
				if(dr!=null) dr.Close();
					
					
					
					
			}
			finally
			{
				if(dr!=null) dr.Close();
			}
			MarkOld();

				

			//Get access rights level
			bReadOnly=AyaBizUtils.Right("Object.TaskGroup")<(int)SecurityLevelTypes.ReadWrite;
		}
		#endregion fetch

		#region Update

		/// <summary>
		/// Called by DataPortal to delete/add/update data into the database
		/// </summary>
		protected override void DataPortal_Update()
		{// 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,"aTaskGroup");	
			
			#region Delete
			if(IsDeleted)
			{
				if(!IsNew)
				{
					

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

						try
						{
                            //changed: 16-June-2006 was in reverse order causing foriegn key violation
                            DBUtil.DB.ExecuteNonQuery(cmDeleteTasks, transaction);
							DBUtil.DB.ExecuteNonQuery(cmDelete, transaction);
							
							DBUtil.RemoveKeywords(transaction,RootObjectTypes.TaskGroup,this.mID);
					
							// 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 aTaskGroup (aID, AACTIVE, aName, aDescription, " +
					"aCreated,aModified,aCreator,aModifier) VALUES (@ID,@Active,@Name, " +
					"@Description,@Created,@Modified,@CurrentUserID,@CurrentUserID)"
					);
			else
				cm=DBUtil.GetCommandFromSQL(
					"UPDATE aTaskGroup SET aID=@ID, AACTIVE=@Active, aName=@Name, " +
					"aDescription=@Description, aModifier=@CurrentUserID, " +
					"aModified=@Modified WHERE aID=@ID"
					);


			cm.AddInParameter("@ID",DbType.Guid,mID);
			cm.AddInParameter("@Active",DbType.Boolean, mActive);
			cm.AddLargeStringInParameter("@Description",mDescription);			
			cm.AddInParameter("@Name",DbType.String, mName);			
			
			//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);					
					
					//Update child tasks collection
					mTaskGroupTasks.Update(this,transaction);

					//Process keywords
					DBUtil.ProcessKeywords(transaction,this.mID,RootObjectTypes.TaskGroup,IsNew,AyaBizUtils.Break(false,
						mName,mDescription));

					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

		#region Delete

		/// <summary>
		/// Remove a TaskGroup record from the database 
		/// </summary>
		/// <param name="Criteria"></param>
		protected override void DataPortal_Delete(object Criteria)
		{
			Criteria crit = (Criteria)Criteria;
			//Delete object and child objects
			DBCommandWrapper cmDelete = DBUtil.GetCommandFromSQL("DELETE FROM aTaskGroup WHERE aID = @ID;");
			cmDelete.AddInParameter("@ID",DbType.Guid,crit.ID);
					
			//Delete tasks
			DBCommandWrapper cmDeleteTasks = DBUtil.GetCommandFromSQL("DELETE FROM aTaskGroupTask WHERE aTaskGroupID = @ID;");
			cmDeleteTasks.AddInParameter("@ID",DbType.Guid,crit.ID);
					
					
			using (IDbConnection connection = DBUtil.DB.GetConnection())
			{
				connection.Open();
				IDbTransaction transaction = connection.BeginTransaction();

				try
				{
                    //changed: 16-June-2006 was in reverse order causing foriegn key violation
					DBUtil.DB.ExecuteNonQuery(cmDeleteTasks, transaction);
					DBUtil.DB.ExecuteNonQuery(cmDelete, transaction);
					
					DBUtil.RemoveKeywords(transaction,RootObjectTypes.TaskGroup,crit.ID);
					
					// Commit the transaction
					transaction.Commit();
							
				}
				catch
				{
					// Rollback transaction 
					transaction.Rollback();
					throw;
				}
				finally
				{
					connection.Close();
				}
			}		
		}
		#endregion delete
		

		#endregion		

		#region Override IsValid / IsDirty
		//Override base class version if there are child objects 
		
        /// <summary>
        /// 
        /// </summary>
			public override bool IsValid
			{
				get
				{
					return base.IsValid && this.mTaskGroupTasks.IsValid;
				}
			}
        /// <summary>
        /// 
        /// </summary>
			public override bool IsDirty
			{
				get
				{
					return base.IsDirty || this.mTaskGroupTasks.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 Task

}//end namespace GZTW.AyaNova.BLL