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

namespace Sarand.Net.Standard.Base.ReferenceData
{
	//=======================================================================
	// Reference Data manager - Regions.
	//=======================================================================
	public abstract partial class SaReferenceDataMgr : SacsItemMgr
	{
		//-------------------------------------------------------------------
		// Utilities.
		/// <summary>Return the valid parent type for the specified Region type.</summary>
		public static SaRegionType ParentTypeFor(SaRegionType regionType)
		{
			if (regionType == SaRegionType.Country) return SaRegionType.Continent;
			if (regionType == SaRegionType.Province) return SaRegionType.Country;
			if (regionType == SaRegionType.Town) return SaRegionType.Province;
			return SaRegionType.Unknown;
		}
		/// <summary>Return the valid subordinate Region type for the specified Region type.</summary>
		public static SaRegionType SubordinateTypeFor(SaRegionType regionType)
		{
			if (regionType == SaRegionType.Continent) return SaRegionType.Country;
			if (regionType == SaRegionType.Country) return SaRegionType.Province;
			if (regionType == SaRegionType.Province) return SaRegionType.Town;
			return SaRegionType.Unknown;
		}

		//-------------------------------------------------------------------
		// Retrieve individual regions.
		public abstract bool RegionExistsById(SysId id);
		public abstract bool RegionExistsByType(String type);
		public abstract SaRegion GetRegionById(SysId id);
		public abstract SaRegion GetRegionByType(String type);
		public abstract SaRegion GetRegion(SaRegion.Params prm);

		// Create region.
		public abstract SaRegion CreateRegion(SaRegionType regionType);

		//-------------------------------------------------------------------
		// Validate region data.
		public bool IsValidRegion(SaRegion region)
		{
			ClearErrorState();
			if (region == null) return SetErrorState(ErrorMessage.ItemNotSpecified);
			return IsValidRegionData(region.GetData(), new SaRegion.ErrField());
		}
		public virtual bool IsValidRegionData(SaRegion.Data data, SaRegion.ErrField errField)
		{
			ClearErrorState();
			// Region properties.
			if (errField.RegionType != SacsHierarchyItem.ValidValue.Ignore)
			{
				if ((int)data.RegionType < 1)
				{
					errField.RegionType = SacsHierarchyItem.ValidValue.Invalid;
					return SetErrorState("Region type must be supplied");
				}
			}
			if (errField.Name != SacsHierarchyItem.ValidValue.Ignore && !IsValidValue(data.Name, "name", (long)SaReferenceDataDbDfn.GetColTextLen(SaReferenceDataDbDfn.ColumnIdx.Region_Name), true))
			{
				errField.Name = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			// Common properties.
			if (errField.Notes != SacsHierarchyItem.ValidValue.Ignore && !IsValidValue(data.Notes, "notes", (long)SaReferenceDataDbDfn.GetColTextLen(SaReferenceDataDbDfn.ColumnIdx.Region_Notes)))
			{
				errField.Notes = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			if (errField.Status != SacsHierarchyItem.ValidValue.Ignore && !SaRegion.ValidStatuses.Contains(data.Status))
			{
				errField.Status = SacsHierarchyItem.ValidValue.Invalid;
				return SetErrorState(ErrorMessage.InvalidStatus);
			}
			// Validate associated data.
			if (errField.RegionIdParent != SacsHierarchyItem.ValidValue.Ignore && SysId.IsValid(data.RegionIdParent))
			{
				if (!RegionExistsById(data.RegionIdParent))
				{
					errField.RegionIdParent = SacsHierarchyItem.ValidValue.Invalid;
					return SetErrorState("Region's parent not found");
				}
			}
			return true;
		}

		//-------------------------------------------------------------------
		// Region database interface.
		public abstract bool InsertRegion(SaRegion region, DbUpdateInfo dbUpdateInfo);
		public abstract bool UpdateRegion(SaRegion region, DbUpdateInfo dbUpdateInfo);
		public virtual bool RegionCanBeDeleted(SaRegion region)
		{
			ClearErrorState();
			if (region == null) return SetErrorState(ErrorMessage.InvalidStatus);
			if (region.HasDependentRegions()) return SetErrorState("Has dependent regions");
			if (region.HasDependentCurrencies()) return SetErrorState("Has dependent currencies");
			if (region.HasDependentTaxCodes()) return SetErrorState("Has dependent tax codes");
			return true;
		}
		public abstract bool DeleteRegion(SaRegion region, DbUpdateInfo dbUpdateInfo);

		//-------------------------------------------------------------------
		// Region list.
		public abstract ColumnDfn GetRegionColumnDfn(SaRegion.Column columnId, String caption = "", int width = 0);
		public abstract List<String> GetRegionQueryFilter(SaRegion.Params prm);
		public abstract long GetRegionCount(SaRegion.Params prm);
		public abstract List<SaRegion> GetRegionList(SaRegion.Params prm);
		public abstract DbResultSet ExecuteRegionQuery(List<ColumnDfn> columns, SaRegion.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 GetRegionDataValue(ColumnDfn column, NamedValue.Map values)
		{
			DataValue value = new DataValue();
			switch ((SaRegion.Column)column.Id)
			{

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

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

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

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