using Sarand.Net.Standard.Base.App;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Dbas;
using System;
using System.Collections.Generic;
using System.Text;

namespace Sarand.Net.Standard.Base.ItemData
{
	//=======================================================================
	public abstract class SaItemDataMgr : SacsItemMgr
	{
		//-------------------------------------------------------------------
		// Definitions.

		//-------------------------------------------------------------------
		// Data members.

		//-------------------------------------------------------------------
		// Static initialisation.
		static SaItemDataMgr ()
		{
		}

		//-------------------------------------------------------------------
		// Construction.
		protected SaItemDataMgr ()
		{
		}

		//-------------------------------------------------------------------
		// Properties.
		public abstract bool DatabaseIsValid { get; }
		public abstract bool CanUpdateDatabase { get; }

		//*******************************************************************
		//                         I t e m   D a t a
		//*******************************************************************
		// Utilities.
		public abstract bool ItemHasData (ItemId itemId, bool ignoreDeleted = true);
		public abstract bool ItemHasData (ItemId itemId, String dataType, bool ignoreDeleted = true);

		//-------------------------------------------------------------------
		// Retrieve individual item data entries.
		public abstract bool ItemDataExists (SysId id);
		public abstract bool ItemDataExists (ItemId itemId, String dataType, bool ignoreDeleted = true);
		public abstract SaItemData GetItemData (SysId id);
		public abstract SaItemData GetItemData (ItemId itemId, String dataType);
		public abstract SaItemData GetItemData (SaItemData.Params prmItemData);

		// Create Item Data.
		public abstract SaItemData CreateItemData (ItemId itemId);

		//-------------------------------------------------------------------
		// Validate Item Data.
		public bool IsValidItemData (SaItemData itemData)
		{
			ClearErrorState();
			if (itemData == null) return SetErrorState(ErrorMessage.ItemNotSpecified);
			return IsValidItemDataData(itemData.GetData(), new SaItemData.ErrField());
		}
		public virtual bool IsValidItemDataData (SaItemData.Data itemDataData, SaItemData.ErrField errField)
		{
			ClearErrorState();
			if ((int)itemDataData.ItemId.Type < 1)
			{
				errField.ItemType = SacsHierarchyItem.ValidValue.Invalid;
				return SetErrorState("Item type must be supplied");
			}
			if (!SysId.IsValid(itemDataData.ItemId.Id))
			{
				errField.ItemId = SacsHierarchyItem.ValidValue.Invalid;
				return SetErrorState("Item Id must be supplied");
			}
			if (!IsValidValue(itemDataData.DataType, "Data type", (long)SaItemDataDbDfn.GetColTextLen(SaItemDataDbDfn.ColumnIdx.SaItemData_DataType), true))
			{
				errField.DataType = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			if (!IsValidValue(itemDataData.ItemData, "Item data", (long)SaItemDataDbDfn.GetColTextLen(SaItemDataDbDfn.ColumnIdx.SaItemData_ItemData)))
			{
				errField.ItemData = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			// Common properties.
			if (!IsValidValue(itemDataData.Notes, "notes", (long)SaItemDataDbDfn.GetColTextLen(SaItemDataDbDfn.ColumnIdx.SaItemData_Notes)))
			{
				errField.Notes = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			if (!SaItemData.ValidStatuses.Contains(itemDataData.Status))
			{
				errField.Status = SacsHierarchyItem.ValidValue.Invalid;
				return SetErrorState(ErrorMessage.InvalidStatus);
			}
			return true;
		}

		//-------------------------------------------------------------------
		// Item Data database interface.
		public abstract bool InsertItemData (SaItemData itemData, DbUpdateInfo dbUpdateInfo);
		public abstract bool UpdateItemData (SaItemData itemData, DbUpdateInfo dbUpdateInfo);
		public virtual bool ItemDataCanBeDeleted (SaItemData itemData)
		{
			ClearErrorState();
			if (!SysId.IsValid(itemData.Id)) return SetErrorState(ErrorMessage.InvalidItemId);
			return true;
		}
		public abstract bool DeleteItemData (SaItemData itemData, DbUpdateInfo dbUpdateInfo);
		public abstract bool ClearItemData (ItemId itemId, DbUpdateInfo dbUpdateInfo);
		public abstract bool ClearItemData (ItemId itemId, String dataType, DbUpdateInfo dbUpdateInfo);

		//-------------------------------------------------------------------
		// Item Data list.
		public abstract ColumnDfn GetItemDataColumnDfn (SaItemData.Column columnId, String caption = "", int width = 0);
		public abstract List<String> GetItemDataQueryFilter (SaItemData.Params prm);
		public abstract long GetItemDataCount (SaItemData.Params prm);
		public abstract List<SaItemData> GetItemDataList (SaItemData.Params prm);
		public abstract DbResultSet ExecuteItemDataQuery (List<ColumnDfn> columns, SaItemData.Params prm);

		//-------------------------------------------------------------------
		/// <summary>
		/// Extract and format result set data value where specific handling is required.
		/// <para>Where response is an invalid data value, format value using column.FormatValue(values).</para>
		/// </summary>
		public virtual DataValue GetItemDataDataValue (ColumnDfn column, NamedValue.Map values)
		{
			DataValue value = new DataValue();
			switch ((SaItemData.Column)column.Id)
			{
				//-----------------------------------------------------------
				// Item type.
				case SaItemData.Column.ItemType_Desc:
				{
					short itemType = (short)values.GetValue(column.DataName).AsLong();
					value = new DataValue(itemType.ToString());
				}
				break;

				//-----------------------------------------------------------
				// Notes.
				case SaItemData.Column.Notes:
				{
					value = new DataValue(SacsHierarchyItem.FormatForDisplay(values.GetValue(column.DataName).ToString(), 200));
				}
				break;

				//-----------------------------------------------------------
				// Status.
				case SaItemData.Column.Status_Desc:
				case SaItemData.Column.Status_Ind:
				{
					String statusCode = values.GetValue(column.DataName).ToString();
					SaStatus status = SacsSystem.GetStatusForCode(statusCode);
					if (column.Id == (int)SaItemData.Column.Status_Desc)
						value = new DataValue(SacsSystem.GetStatusDescForCode(statusCode));
					else if (column.Id == (int)SaItemData.Column.Status_Ind)
						value = new DataValue(SaItemData.GetStatusTriState(status));
				}
				break;

				//-----------------------------------------------------------
			}
			return value;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}