using Sarand.BusinessMgr.Net.Standard.Base.App;
using Sarand.BusinessMgr.Net.Standard.Base.Bus;
using Sarand.BusinessMgr.Net.Standard.Dbas.Bus;
using Sarand.BusinessMgr.Net.Standard.Dbas.Internal;
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 Sarand.Net.Standard.Base.Utils;
using Sarand.Net.Standard.Dbas.Data;
using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Linq;

namespace Sarand.BusinessMgr.Net.Standard.Dbas.Mgr
{
	//=======================================================================
	// Price manager - Prices.
	//=======================================================================
	partial class SbmPriceMgr_Dbas
	{
		//-------------------------------------------------------------------
		// Utilities.
		private List<StringPair> GetLogProperties(SbmPrice price)
		{
			return new List<StringPair>()
			{
				new StringPair("PriceSetId",SysId.ToString(price.PriceSetId)),
				new StringPair("CommodityId",SysId.ToString(price.CommodityId)),
				new StringPair("PriceType",price.PriceType.ToString()),
				new StringPair("Status",price.StatusCode)
			};
		}

		//-------------------------------------------------------------------
		// Get item.
		public override SbmPrice GetPrice(SbmPrice.Params prm)
		{
			return GetPrice(GetPriceQueryFilter(prm).Concat(" AND ", "(", ")"));
		}
		private SbmPrice GetPrice(String filter)
		{
			ClearErrorState();
			long count = GetPriceCount(filter);
			if (count == 0) return null;
			if (count != 1)
			{
				SetErrorState(Msg_MultipleItemsFound);
				return null;
			}
			SbmPrice price = null;
			// Query data.
			using (var dbConnection = Database.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					dbConnection.Open();
					SaPrice_Db dbPrice = new SaPrice_Db(DbInfo);
					dbPrice.PopulateFrom(dbCommand, aliasPrice, filter);
					price = CreatePrice(dbPrice);
				}
				catch (Exception exc)
				{
					SetErrorState(Msg_DatabaseQueryException);
					SaLogger.Warn($"{SysUtil.Fn}\n\tQuery: {dbCommand.CommandText}\n\t{ExceptionUtil.GetErrorStateMessage(exc)}");
				}
			}
			return price;
		}

		//-------------------------------------------------------------------
		// Create item.
		public override SbmPrice CreatePrice(SysId priceSetId, SysId commodityId, Sbm.PriceType priceType)
		{
			ClearErrorState();
			return new SbmPrice_Dbas(priceSetId, commodityId, priceType, 0);
		}
		private SbmPrice_Dbas CreatePrice(SaPrice_Db dbPrice)
		{
			ClearErrorState();
			SbmPrice_Dbas price = new SbmPrice_Dbas(new SysId(dbPrice._PriceSetId), new SysId(dbPrice._CommodityId), (Sbm.PriceType)dbPrice._Type, (ushort)dbPrice._Flags);
			PopulateFrom(dbPrice, price);
			return price;
		}

		//-------------------------------------------------------------------
		// Validate item.
		public override bool IsValidPriceData(SbmPrice.Data data, SbmPrice.ErrField errField)
		{
			ClearErrorState();
			if (!base.IsValidPriceData(data, errField)) return false;
			return true;
		}

		//-------------------------------------------------------------------
		// Insert item.
		public override bool InsertPrice(SbmPrice price, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (!IsValidPrice(price)) return false;
			if (SysId.IsValid(price.Id)) return SetErrorState(ErrorMessage.ValiditemId);
			using (var dbConnection = Database.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					dbConnection.Open();
					SaPrice_Db dbPrice = new SaPrice_Db(DbInfo);
					PopulateTo(dbPrice, price, dbUpdateInfo);
					// NB Prices don't have their own Ids.
					dbPrice.ExecuteInsertCommand(dbCommand);
					price.Changed = false;
					if (DebugMode) SaLogger.Debug($"{SysUtil.Fn} Inserted." + GetLogProperties(price).Concat(": ").Concat("", "\n\t"));
				}
				catch (Exception exc) { SetErrorState(exc.Message); }
			}
			return OK;
		}

		//-------------------------------------------------------------------
		// Update item.
		public override bool UpdatePrice(SbmPrice price, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (!IsValidPrice(price)) return false;
			if (!SysId.IsValid(price.PriceSetId)) return SetErrorState(ErrorMessage.InvalidItemId);
			if (!SysId.IsValid(price.CommodityId)) return SetErrorState(ErrorMessage.InvalidItemId);
			if (!price.Changed)
			{
				if (DebugMode) SaLogger.Debug($"{SysUtil.Fn} Data not changed." + GetLogProperties(price).Concat(": ").Concat("", "\n\t"));
				return true;
			}
			using (var dbConnection = Database.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					// Retrieve Price.
					dbConnection.Open();
					SaPrice_Db dbPrice = new SaPrice_Db(DbInfo);
					dbPrice.PopulateFrom(dbCommand, aliasPrice, "PriceSetId=" + SysId.ToString(price.PriceSetId) + " And CommodityId=" + SysId.ToString(price.CommodityId));
					//SbmUpdateLogItemMonitor_Price updateLogMonitor = new SbmUpdateLogItemMonitor_Price(UserContext, CreatePrice(dbPrice));

					// Update properties.
					PopulateTo(dbPrice, price, dbUpdateInfo);
					dbPrice.ExecuteUpdateCommand(dbCommand);
					price.Changed = false;
					if (DebugMode) SaLogger.Debug($"{SysUtil.Fn} Updated." + GetLogProperties(price).Concat(": ").Concat("", "\n\t"));

					// Record updates.
					//updateLogMonitor.RecordUpdatedValues(price);
					//updateLogMonitor.LogUpdates();
				}
				catch (Exception exc) { SetErrorState(exc.Message); }
			}
			return OK;
		}

		//-------------------------------------------------------------------
		// Delete item.
		public override bool PriceCanBeDeleted(SbmPrice price)
		{
			ClearErrorState();
			if (!base.PriceCanBeDeleted(price)) return false;
			return true;
		}
		public override bool DeletePrice(SbmPrice price, DbUpdateInfo dbUpdateInfo)
		{
			ClearErrorState();
			if (!PriceCanBeDeleted(price)) return false;
			using (var dbConnection = Database.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					// Retrieve Price.
					dbConnection.Open();
					SaPrice_Db dbPrice = new SaPrice_Db(DbInfo);
					dbPrice.PopulateFrom(dbCommand, aliasPrice, "PriceSetId=" + SysId.ToString(price.PriceSetId) + " And CommodityId=" + SysId.ToString(price.CommodityId));
					// Delete Price.
					dbCommand.CommandType = System.Data.CommandType.Text;
					dbCommand.CommandText = "DELETE FROM " + SbmDbDfn.GetTableName(SbmDbDfn.TableIdx.SaPrice) + " WHERE PriceSetId = " + SysId.ToString(price.PriceSetId) + " And CommodityId=" + SysId.ToString(price.CommodityId) + ";";
					dbCommand.ExecuteNonQuery();
					price.Changed = false;
					if (DebugMode) SaLogger.Debug($"{SysUtil.Fn} Deleted." + GetLogProperties(price).Concat(": ").Concat("", "\n\t"));
				}
				catch (Exception exc) { SetErrorState(exc.Message); }
			}
			return OK;
		}

		//-------------------------------------------------------------------
		// Copy data properties to and from database.
		private void PopulateTo(SaPrice_Db dbPrice, SbmPrice price, DbUpdateInfo dbUpdateInfo)
		{
			dbPrice._PriceSetId = price.PriceSetId.ToInt();
			dbPrice._CommodityId = price.CommodityId.ToInt();
			dbPrice._Type = (short)price.PriceType;
			dbPrice._CalcMethod = (short)price.CalculationMethod;
			dbPrice._CalcValue = price.CalculationValue;
			dbPrice._RounderMethod = (short)price.RounderMethod;
			dbPrice._RounderDirection = (short)price.RounderDirection;
			dbPrice._RounderMultipleOf = price.RounderMultipleOf;
			dbPrice._RounderAdjustment = price.RounderAdjustment;
			// Common properties.
			dbPrice._Notes = price.Notes;
			dbPrice._Status = SacsSystem.GetStatusCode(price.Status);
			dbPrice._Flags = (short)price.Flags;
			if (!SysId.IsValid(price.PriceSetId) && !SysId.IsValid(price.CommodityId))
			{
				dbPrice._CreateOn = DateTime.UtcNow;
				dbPrice._CreateBy = dbUpdateInfo.UserId.ToInt();
				dbPrice._CreateHost = dbUpdateInfo.Host;
			}
			dbPrice._UpdateOn = DateTime.UtcNow;
			dbPrice._UpdateBy = dbUpdateInfo.UserId.ToInt();
			dbPrice._UpdateHost = dbUpdateInfo.Host;
		}
		private void PopulateFrom(SaPrice_Db dbPrice, SbmPrice price)
		{
			//price.PriceSetId = new SysId(dbPrice._PriceSetId);
			//price.CommodityId = new SysId(dbPrice._CommodityId);
			//price.PriceType = (Sbm.PriceType)dbPrice._Type;
			price.CalculationMethod = (Sbm.PriceCalcMethod)(dbPrice._CalcMethod ?? 0);
			price.CalculationValue = dbPrice._CalcValue ?? 0.0m;
			price.RounderMethod = (Sbm.PriceRounderMethod)(dbPrice._RounderMethod ?? 0);
			price.RounderDirection = (Sbm.PriceRounderDirection)(dbPrice._RounderDirection ?? 0);
			price.RounderMultipleOf = dbPrice._RounderMultipleOf ?? 0.0m;
			price.RounderAdjustment = dbPrice._RounderAdjustment ?? 0.0m;
			// Common properties.
			price.Notes = dbPrice._Notes;
			price.Status = SacsSystem.GetStatusForCode(dbPrice._Status);
			price.SetCreateStamp(dbPrice._CreateOn ?? default(DateTime), new SysId(dbPrice._CreateBy ?? 0), dbPrice._CreateHost);
			price.SetUpdateStamp(dbPrice._UpdateOn ?? default(DateTime), new SysId(dbPrice._UpdateBy ?? 0), dbPrice._UpdateHost);
			price.AcceptChanges();
		}

		//-------------------------------------------------------------------
		// Column definitions.
		private static readonly String aliasPrice = "aPrc";
		private static readonly String aliasPrice_PriceSet = "Prc_PrcSet";
		private static readonly String prefixPrice_PriceSet = aliasPrice_PriceSet + "_";
		private static readonly String aliasPrice_Commodity = "Prc_PrcCmd";
		private static readonly String prefixPrice_Commodity = aliasPrice_Commodity + "_";

		// Column definition population.
		private void SetPriceColDfn
			(ColumnDfn col, String caption, int width, SbmDbDfn.ColumnIdx dbCol,
			ColumnAlignment align = ColumnAlignment.Default, DataValue.DataType dataCategoryId = DataValue.DataType.String,
			String alias = "", String prefix = "")
		{
			if (String.IsNullOrEmpty(alias) && SbmDbDfn.GetTableForColumn(dbCol) == SbmDbDfn.TableIdx.SaPrice)
				alias = aliasPrice;
			col.Set(caption, width, (int)dbCol, prefix + SbmDbDfn.GetColumnName(dbCol, false), SbmDbDfn.GetColumnNameQual(dbCol, alias), dataCategoryId, align);
			if (dataCategoryId == DataValue.DataType.String && dbCol != SbmDbDfn.ColumnIdx.Unknown)
				col.MaxLength = (int)Internals.GetColTextLen(dbCol);
		}

		//-------------------------------------------------------------------
		// Item column definitions.
		public override ColumnDfn GetPriceColumnDfn(SbmPrice.Column columnId, string caption = "", int width = 0)
		{
			ColumnDfn columnDfn = new ColumnDfn((int)columnId, caption, width);
			switch (columnId)
			{
				case SbmPrice.Column.Pos:
					SetPriceColDfn(columnDfn, "Pos", 45, SbmDbDfn.ColumnIdx.Unknown, ColumnAlignment.Right);
					columnDfn.SortMode = ColumnDfn.ColumnSortMode.Off;
					columnDfn.ReadOnly = true;
					columnDfn.Resizable = false;
					break;
				// Price set.
				case SbmPrice.Column.PriceSetId:
					SetPriceColDfn(columnDfn, "Price set #", 60, SbmDbDfn.ColumnIdx.SaPrice_PriceSetId, ColumnAlignment.Right, DataValue.DataType.Long);
					columnDfn.ReadOnly = true;
					break;
				case SbmPrice.Column.PriceSet_Reference:
					SetPriceColDfn(columnDfn, "Price set ref", 80, SbmDbDfn.ColumnIdx.SaPriceSet_Ref, ColumnAlignment.Left, DataValue.DataType.String, aliasPrice_PriceSet, prefixPrice_PriceSet);
					columnDfn.ReadOnly = true;
					break;
				case SbmPrice.Column.PriceSet_Name:
					SetPriceColDfn(columnDfn, "Price set", 80, SbmDbDfn.ColumnIdx.SaPriceSet_Name, ColumnAlignment.Left, DataValue.DataType.String, aliasPrice_PriceSet, prefixPrice_PriceSet);
					columnDfn.ReadOnly = true;
					break;
				// Commodity.
				case SbmPrice.Column.CommodityId:
					SetPriceColDfn(columnDfn, "Commodity #", 60, SbmDbDfn.ColumnIdx.SaPrice_CommodityId, ColumnAlignment.Right, DataValue.DataType.Long);
					columnDfn.ReadOnly = true;
					break;
				case SbmPrice.Column.Commodity_Code:
					SetPriceColDfn(columnDfn, "Commodity", 80, SbmDbDfn.ColumnIdx.Commodity_Code, ColumnAlignment.Left, DataValue.DataType.String, aliasPrice_Commodity, prefixPrice_Commodity);
					columnDfn.ReadOnly = true;
					break;
				case SbmPrice.Column.Commodity_SalesPrice:
					SetPriceColDfn(columnDfn, "Commodity price", 80, SbmDbDfn.ColumnIdx.Commodity_SalesPrice, ColumnAlignment.Right, DataValue.DataType.Decimal, aliasPrice_Commodity, prefixPrice_Commodity);
					columnDfn.NumDecimals = 2;
					columnDfn.ReadOnly = true;
					break;
				// Price Properties.
				case SbmPrice.Column.PriceType:
					SetPriceColDfn(columnDfn, "Type", 60, SbmDbDfn.ColumnIdx.SaPrice_Type, ColumnAlignment.Right, DataValue.DataType.Long);
					columnDfn.ReadOnly = true;
					break;
				case SbmPrice.Column.PriceType_Desc:
					SetPriceColDfn(columnDfn, "Type", 80, SbmDbDfn.ColumnIdx.SaPrice_Type, ColumnAlignment.Center);
					columnDfn.ReadOnly = true;
					break;
				case SbmPrice.Column.CalculationMethod:
					SetPriceColDfn(columnDfn, "Calc method", 80, SbmDbDfn.ColumnIdx.SaPrice_CalcMethod, ColumnAlignment.Center, DataValue.DataType.Long);
					break;
				case SbmPrice.Column.CalculationMethod_Desc:
					SetPriceColDfn(columnDfn, "Calc method", 80, SbmDbDfn.ColumnIdx.SaPrice_CalcMethod, ColumnAlignment.Center);
					break;
				case SbmPrice.Column.CalculationValue:
					SetPriceColDfn(columnDfn, "Calc value", 80, SbmDbDfn.ColumnIdx.SaPrice_CalcValue, ColumnAlignment.Center, DataValue.DataType.Decimal);
					columnDfn.NumDecimals = 2;
					break;
				case SbmPrice.Column.RounderMethod:
					SetPriceColDfn(columnDfn, "Round method", 80, SbmDbDfn.ColumnIdx.SaPrice_RounderMethod, ColumnAlignment.Center, DataValue.DataType.Long);
					break;
				case SbmPrice.Column.RounderMethod_Desc:
					SetPriceColDfn(columnDfn, "Round method", 80, SbmDbDfn.ColumnIdx.SaPrice_RounderMethod, ColumnAlignment.Center);
					break;
				case SbmPrice.Column.RounderDirection:
					SetPriceColDfn(columnDfn, "Round direction", 80, SbmDbDfn.ColumnIdx.SaPrice_RounderDirection, ColumnAlignment.Center, DataValue.DataType.Long);
					break;
				case SbmPrice.Column.RounderDirection_Desc:
					SetPriceColDfn(columnDfn, "Round direction", 80, SbmDbDfn.ColumnIdx.SaPrice_RounderDirection, ColumnAlignment.Center);
					break;
				case SbmPrice.Column.RounderAdjustment:
					SetPriceColDfn(columnDfn, "Round adjustment", 80, SbmDbDfn.ColumnIdx.SaPrice_RounderAdjustment, ColumnAlignment.Center, DataValue.DataType.Decimal);
					columnDfn.NumDecimals = 2;
					break;
				case SbmPrice.Column.RounderMultipleOf:
					SetPriceColDfn(columnDfn, "Round multiple of", 80, SbmDbDfn.ColumnIdx.SaPrice_RounderMultipleOf, ColumnAlignment.Center, DataValue.DataType.Decimal);
					columnDfn.NumDecimals = 2;
					break;
				// Derived properties.
				case SbmPrice.Column.SalesDiscountPercent:
					SetPriceColDfn(columnDfn, "Discount %", 80, SbmDbDfn.ColumnIdx.Unknown, ColumnAlignment.Center, DataValue.DataType.Decimal);
					columnDfn.NumDecimals = 2;
					break;
				// Common properties.
				case SbmPrice.Column.Notes:
					SetPriceColDfn(columnDfn, "Notes", 200, SbmDbDfn.ColumnIdx.SaPrice_Notes);
					break;
				case SbmPrice.Column.Status:
					SetPriceColDfn(columnDfn, "Status", 50, SbmDbDfn.ColumnIdx.SaPrice_Status, ColumnAlignment.Center);
					break;
				case SbmPrice.Column.Status_Desc:
					SetPriceColDfn(columnDfn, "Status", 50, SbmDbDfn.ColumnIdx.SaPrice_Status);
					break;
				case SbmPrice.Column.Status_Ind:
					SetPriceColDfn(columnDfn, "Status", 50, SbmDbDfn.ColumnIdx.SaPrice_Status, ColumnAlignment.Center, DataValue.DataType.TriState);
					columnDfn.TriStateFormat = ColumnTriStateFormat.Lights;
					break;
				case SbmPrice.Column.CreateOn_Date:
					SetPriceColDfn(columnDfn, "Created", 65, SbmDbDfn.ColumnIdx.SaPrice_CreateOn, ColumnAlignment.Center, DataValue.DataType.Date);
					columnDfn.DateFormat = "d-MMM-yy";
					columnDfn.ReadOnly = true;
					break;
				case SbmPrice.Column.UpdateOn_Date:
					SetPriceColDfn(columnDfn, "Updated", 65, SbmDbDfn.ColumnIdx.SaPrice_UpdateOn, ColumnAlignment.Center, DataValue.DataType.Date);
					columnDfn.DateFormat = "d-MMM-yy";
					columnDfn.ReadOnly = true;
					break;
			}

			if (!String.IsNullOrEmpty(caption))
				columnDfn.Caption = caption;
			if (width > 0)
				columnDfn.Width = width;
			return columnDfn;
		}

		//-------------------------------------------------------------------
		// Price query filter.
		public override List<string> GetPriceQueryFilter(SbmPrice.Params prm)
		{
			List<String> filter = new List<String>();

			// Price Set.
			String colPrice_PriceSetId = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_PriceSetId, aliasPrice);
			if (SysId.IsValid(prm.PriceSetId))
				filter.Add(colPrice_PriceSetId + "=" + SysId.ToString(prm.PriceSetId));

			// Commodity.
			String colPrice_CommodityId = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CommodityId, aliasPrice);
			if (SysId.IsValid(prm.CommodityId))
				filter.Add(colPrice_CommodityId + "=" + SysId.ToString(prm.CommodityId));

			// Price Type.
			String colPrice_PriceType = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_Type, aliasPrice);
			if (prm.PriceType > 0)
				filter.Add(colPrice_PriceType + "=" + ((int)prm.PriceType).ToString());

			// Calculation method.
			String colPrice_CalculationMethod = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CalcMethod, aliasPrice);
			if (prm.CalculationMethod > 0)
				filter.Add(colPrice_CalculationMethod + "=" + ((int)prm.CalculationMethod).ToString());

			// Calculation value.
			String colPrice_CalculationValue = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CalcValue, aliasPrice);
			if (prm.CalculationValue > 0)
				filter.Add(colPrice_CalculationValue + "=" + prm.CalculationValue.ToString());

			// Rounder method.
			String colPrice_RounderMethod = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_RounderMethod, aliasPrice);
			if (prm.RounderMethod > 0)
				filter.Add(colPrice_RounderMethod + "=" + ((int)prm.RounderMethod).ToString());

			// Rounder direction.
			String colPrice_RounderDirection = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_RounderDirection, aliasPrice);
			if (prm.RounderDirection > 0)
				filter.Add(colPrice_RounderDirection + "=" + ((int)prm.RounderDirection).ToString());

			// Status.
			String colPrice_Status = SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_Status, aliasPrice);
			if (prm.StatusCat == SbmPrice.StatusCat.ActiveOnly)
				filter.Add(colPrice_Status + "='" + StatusActive + "'");

			if (filter.Count < 1 && prm.IncludeDefaultFilter) filter.Add("1=1");
			return filter;
		}

		// Price sort columns.
		public List<String> GetPriceSortColumns(SbmPrice.Params prm)
		{
			// Sort sequence:
			List<String> sortColumnCodes = new List<String>();
			foreach (var columnDfn in prm.SortColumns)
			{
				// Need to ensure correct alias used for Price columns in case of conflict.
				String sortCol = String.Empty;
				if (SbmDbDfn.GetTableForColumn((SbmDbDfn.ColumnIdx)columnDfn.DbColumn) == SbmDbDfn.TableIdx.SaPrice)
				{
					sortCol = SbmDbDfn.GetColumnNameQual((SbmDbDfn.ColumnIdx)columnDfn.DbColumn, aliasPrice);
				}
				else
				{
					sortCol = columnDfn.DataName;
					if (!StringUtil.IsEmpty(columnDfn.SortDataName))
						sortCol = columnDfn.SortDataName;
				}
				if (!sortCol.IsEmpty())
				{
					DbOrderByNullMode orderByNullMode = DbOrderByNullMode.Default; // eSaOrderByDemoteNulls, eSaOrderByPromoteNulls
					sortColumnCodes.Add(DbQuery.FormatForOrderBy(sortCol, columnDfn.SortAscending, orderByNullMode).Concat(", "));
				}
			}
			sortColumnCodes.RemoveBlanks();
			if (sortColumnCodes.IsEmpty())
			{
				// Default sort columns:
				sortColumnCodes.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_PriceSetId, aliasPrice) + " ASC");
				sortColumnCodes.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CommodityId, aliasPrice) + " ASC");
			}
			return sortColumnCodes;
		}

		//-------------------------------------------------------------------
		// Price count.
		private long GetPriceCount(String filter)
		{
			ClearErrorState();
			return Database.GetRowCount(SbmDbDfn.GetTableName(SbmDbDfn.TableIdx.SaPrice) + " As " + aliasPrice, filter);
		}
		public override long GetPriceCount(SbmPrice.Params prm)
		{
			ClearErrorState();
			return GetPriceCount(GetPriceQueryFilter(prm).Concat(" AND ", "(", ")"));
		}

		//-------------------------------------------------------------------
		// Price list.
		public override List<SbmPrice> GetPriceList(SbmPrice.Params prm)
		{
			ClearErrorState();
			List<SbmPrice> prices = new List<SbmPrice>();
			DbQuery qry = new DbQuery(Database.DbmsType);
			qry.Tables.Add(SbmDbDfn.GetTableName(SbmDbDfn.TableIdx.SaPrice), aliasPrice);
			SaPrice_Db dbPrice = new SaPrice_Db(DbInfo);
			qry.Columns.AddRange(dbPrice.ExistingColumnNames);
			qry.Filters.AddRange(GetPriceQueryFilter(prm));
			qry.OrderBy.AddRange(GetPriceSortColumns(prm));
			// Query data.
			using (var dbConnection = Database.CreateConnection())
			using (var dbCommand = dbConnection.CreateCommand())
			{
				try
				{
					dbConnection.Open();
					dbCommand.CommandText = qry.BuildQuery(prm.ResultsPaging);
					using (DbDataReader dbDataReader = dbCommand.ExecuteReader())
					{
						while (dbDataReader.Read())
						{
							dbPrice = new SaPrice_Db(DbInfo);
							dbPrice.PopulateFrom(dbDataReader);
							prices.Add(CreatePrice(dbPrice));
						}
					}
				}
				catch (Exception exc)
				{
					SetErrorState(Msg_DatabaseQueryException);
					SaLogger.Warn($"{SysUtil.Fn}\n\tQuery: {dbCommand.CommandText}\n\t{ExceptionUtil.GetErrorStateMessage(exc)}");
				}
			}
			return prices;
		}

		//-------------------------------------------------------------------
		// Price query execution.
		public override DbResultSet ExecutePriceQuery(List<ColumnDfn> columns, SbmPrice.Params prm)
		{
			ClearErrorState();
			//---------------------------------------------------------------------
			// Construct build database query.
			DbQuery query = new DbQuery(Database.DbmsType);
			query.Tables.Add(SbmDbDfn.GetTableName(SbmDbDfn.TableIdx.SaPrice), aliasPrice);

			// Price Properties - add columns as defined in query list.
			if (columns.HasId(SbmPrice.Column.PriceSetId))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_PriceSetId, aliasPrice));
			if (columns.HasId(SbmPrice.Column.CommodityId))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CommodityId, aliasPrice));
			if (columns.HasId(SbmPrice.Column.PriceType) || columns.HasId(SbmPrice.Column.PriceType_Desc))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_Type, aliasPrice));
			if (columns.HasId(SbmPrice.Column.CalculationMethod) || columns.HasId(SbmPrice.Column.CalculationMethod_Desc) || columns.HasId(SbmPrice.Column.SalesDiscountPercent))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CalcMethod, aliasPrice));
			if (columns.HasId(SbmPrice.Column.CalculationValue) || columns.HasId(SbmPrice.Column.SalesDiscountPercent))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CalcValue, aliasPrice));
			if (columns.HasId(SbmPrice.Column.RounderMethod) || columns.HasId(SbmPrice.Column.RounderMethod_Desc))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_RounderMethod, aliasPrice));
			if (columns.HasId(SbmPrice.Column.RounderDirection) || columns.HasId(SbmPrice.Column.RounderDirection_Desc))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_RounderDirection, aliasPrice));
			if (columns.HasId(SbmPrice.Column.RounderMultipleOf))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_RounderMultipleOf, aliasPrice));
			if (columns.HasId(SbmPrice.Column.RounderAdjustment))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_RounderAdjustment, aliasPrice));
			// Common Properties
			if (columns.HasId(SbmPrice.Column.Notes))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_Notes, aliasPrice));
			if (columns.HasId(SbmPrice.Column.Status) || columns.HasId(SbmPrice.Column.Status_Desc) || columns.HasId(SbmPrice.Column.Status_Ind))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_Status, aliasPrice));
			if (columns.HasId(SbmPrice.Column.CreateOn_Date))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CreateOn, aliasPrice));
			if (columns.HasId(SbmPrice.Column.UpdateOn_Date))
				query.Columns.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_UpdateOn, aliasPrice));

			//---------------------------------------------------------------
			// Price Set.
			bool hasPriceSetCols = false;
			if (!hasPriceSetCols) hasPriceSetCols = columns.HasId(SbmPrice.Column.PriceSet_Reference);
			if (!hasPriceSetCols) hasPriceSetCols = columns.HasId(SbmPrice.Column.PriceSet_Name);
			if (hasPriceSetCols)
			{
				DbQueryJoin joinPriceSet = new DbQueryJoin(DbJoinType.LeftOuter);
				joinPriceSet.Table = new StringPair(SbmDbDfn.GetTableName(SbmDbDfn.TableIdx.SaPriceSet), aliasPrice_PriceSet);
				joinPriceSet.Filters.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPriceSet_Id, aliasPrice_PriceSet) + "=" + SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_PriceSetId, aliasPrice));
				query.Joins.Add(joinPriceSet);
				// Add the Price Sset columns.
				List<SbmDbDfn.ColumnIdx> priceSetColumns = new List<SbmDbDfn.ColumnIdx>()
				{
					SbmDbDfn.ColumnIdx.SaPriceSet_Ref,
					SbmDbDfn.ColumnIdx.SaPriceSet_Name,
				};
				foreach (SbmDbDfn.ColumnIdx dbColumn in priceSetColumns)
					query.Columns.Add(SbmDbDfn.GetColumnNameQual(dbColumn, aliasPrice_PriceSet), prefixPrice_PriceSet + SbmDbDfn.GetColumnName(dbColumn, false));
			}

			//---------------------------------------------------------------
			// Commodity.
			bool hasCommodityCols = false;
			if (!hasCommodityCols) hasCommodityCols = columns.HasId(SbmPrice.Column.Commodity_Code);
			if (!hasCommodityCols) hasCommodityCols = columns.HasId(SbmPrice.Column.Commodity_SalesPrice);
			if (!hasCommodityCols) hasCommodityCols = columns.HasId(SbmPrice.Column.SalesDiscountPercent);
			if (hasCommodityCols)
			{
				// Join to the Commodity table.
				DbQueryJoin joinCommodity = new DbQueryJoin(DbJoinType.LeftOuter);
				joinCommodity.Table = new StringPair(SbmDbDfn.GetTableName(SbmDbDfn.TableIdx.Commodity), aliasPrice_Commodity);
				joinCommodity.Filters.Add(SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.Commodity_Id, aliasPrice_Commodity) + "=" + SbmDbDfn.GetColumnNameQual(SbmDbDfn.ColumnIdx.SaPrice_CommodityId, aliasPrice));
				query.Joins.Add(joinCommodity);
				// Add the Commodity columns.
				List<SbmDbDfn.ColumnIdx> commodityColumns = new List<SbmDbDfn.ColumnIdx>()
				{
					SbmDbDfn.ColumnIdx.Commodity_Code,
					SbmDbDfn.ColumnIdx.Commodity_SalesPrice,
				};
				foreach (SbmDbDfn.ColumnIdx dbColumn in commodityColumns)
					query.Columns.Add(SbmDbDfn.GetColumnNameQual(dbColumn, aliasPrice_Commodity), prefixPrice_Commodity + SbmDbDfn.GetColumnName(dbColumn, false));
			}

			//---------------------------------------------------------------
			// Populate filter.
			query.Filters.AddRange(GetPriceQueryFilter(prm));

			if (!SysId.IsValid(prm.PriceSetId) || !SysId.IsValid(prm.CommodityId))
			{
				// Configure sort sequence.
				foreach (String sortColumn in GetPriceSortColumns(prm))
					query.OrderBy.Add(sortColumn);
			}

			//---------------------------------------------------------------
			//return new DbResultSet_DataTableReader(Database, query.BuildQuery());
			return DbResultSet_DataReader.ExecuteQuery(Database, query.BuildQuery(prm.ResultsPaging));
		}
		//-------------------------------------------------------------------
	}
	//=======================================================================
}