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

namespace Saxonite.Net.Standard.Base.Bus
{
	//=======================================================================
	// Region.
	//=======================================================================
	public abstract class SaxRegion : SacsHierarchyItem
	{
		//-------------------------------------------------------------------
		// Columns.
		public enum Column
		{
			Pos,
			Id,
			RegionType,
			RegionType_Desc,
			CountryIso2Code,
			Name,
			// Parent region.
			RegionIdParent,
			Parent_Name,
			Parent_RegionType,
			Parent_RegionType_Desc,
			// Associated data.
			ChildRegionCount,
			// Common.
			Notes,
			Flags,
			Status,
			Status_Desc,
			Status_Ind,
			CreateOn_Date,
			UpdateOn_Date,
		}

		//-------------------------------------------------------------------
		/// <summary>Properties other than common.</summary>
		public class DataProperties
		{
			public Sax.RegionType RegionType { get; set; } = Sax.RegionType.Unknown;
			public String CountryIso2Code { get; set; } = String.Empty;
			public String Name { get; set; } = String.Empty;
			public Decimal? Latitude { get; set; } = null;
			public Decimal? Longitude { get; set; } = null;
			public SysId RegionIdParent { get; set; }
		}

		//-------------------------------------------------------------------
		// Data.
		public new class Data : SacsHierarchyItem.Data
		{
			// Data members.
			private readonly DataProperties data = new DataProperties();
			// Construction.
			public Data()
			{
				Status = DefaultStatus;
			}
			// Properties.
			public Sax.RegionType RegionType
			{
				get { return data.RegionType; }
				set { CheckChangedEnum(data.RegionType, value); data.RegionType = value; }
			}
			public String CountryIso2Code
			{
				get { return data.CountryIso2Code; }
				set { CheckChanged(data.CountryIso2Code, value); data.CountryIso2Code = value; }
			}
			public String Name
			{
				get { return data.Name; }
				set { CheckChanged(data.Name, value); data.Name = value; }
			}
			public Decimal? Latitude
			{
				get { return data.Latitude; }
				set { CheckChangedNullable(data.Latitude, value); data.Latitude = value; }
			}
			public Decimal? Longitude
			{
				get { return data.Longitude; }
				set { CheckChangedNullable(data.Longitude, value); data.Longitude = value; }
			}
			public SysId RegionIdParent
			{
				get { return data.RegionIdParent; }
				set { CheckChanged(data.RegionIdParent, value); data.RegionIdParent = value; }
			}
			// Population.
			internal void PopulateFrom(Data data)
			{
				RegionType = data.RegionType;
				CountryIso2Code = data.CountryIso2Code;
				Name = data.Name;
				Latitude = data.Latitude;
				Longitude = data.Longitude;
				RegionIdParent = data.RegionIdParent;
				base.PopulateFrom(data);
			}
			public Data Clone()
			{
				Data data = new Data();
				data.PopulateFrom(this);
				return data;
			}
		}

		//-------------------------------------------------------------------
		// Error field - identify properties with validation error.
		public new class ErrField : SacsHierarchyItem.ErrField
		{
			// Identifies the field that has invalid data.
			public ValidValue RegionType { get; set; } = ValidValue.Valid;
			public ValidValue CountryIso2Code { get; set; } = ValidValue.Valid;
			public ValidValue Name { get; set; } = ValidValue.Valid;
			public ValidValue Latitude { get; set; } = ValidValue.Valid;
			public ValidValue Longitude { get; set; } = ValidValue.Valid;
			public ValidValue RegionIdParent { get; set; } = ValidValue.Valid;
		}

		//-------------------------------------------------------------------
		// Data members.
		private readonly Data data = new Data();

		//-------------------------------------------------------------------
		// Construction.
		protected SaxRegion(SysId id) : base(id)
		{
			base.SetData(data);
			Status = DefaultStatus;
		}

		//-------------------------------------------------------------------
		// Status.
		private static readonly List<SaStatus> validStatuses = new List<SaStatus>()
		{
			SaStatus.Active,
			SaStatus.Inactive,
			SaStatus.Deleted,
		};
		public static SaStatus DefaultStatus { get { return SaStatus.Active; } }
		public static List<SaStatus> ValidStatuses { get { return new List<SaStatus>(validStatuses); } }
		public static DataValue.TriStateType GetStatusTriState(SaStatus status)
		{
			if (status == SaStatus.Active) return DataValue.TriStateType.Green;
			if (status == SaStatus.Inactive) return DataValue.TriStateType.Red;
			if (status == SaStatus.Deleted) return DataValue.TriStateType.Purple;
			return DataValue.TriStateType.Unknown;
		}

		//-------------------------------------------------------------------
		// Utilities.
		public ItemId GetItemId()
		{
			return new ItemId((short)Sax.DataItemType.Region, Id);
		}
		public static List<Sax.RegionType> GetValidParentRegionTypes(Sax.RegionType regionType)
		{
			List<Sax.RegionType> parentRegionTypes = new List<Sax.RegionType>();
			switch (regionType)
			{
				case Sax.RegionType.World:
					parentRegionTypes.Add(Sax.RegionType.Galaxy);
					break;
				case Sax.RegionType.Continent:
					parentRegionTypes.Add(Sax.RegionType.World);
					break;
				case Sax.RegionType.SubContinent:
					parentRegionTypes.Add(Sax.RegionType.Continent);
					break;
				case Sax.RegionType.Country:
					parentRegionTypes.Add(Sax.RegionType.Continent);
					parentRegionTypes.Add(Sax.RegionType.SubContinent);
					break;
				case Sax.RegionType.Nation:
					parentRegionTypes.Add(Sax.RegionType.Country);
					break;
				case Sax.RegionType.State:
					parentRegionTypes.Add(Sax.RegionType.Country);
					break;
				case Sax.RegionType.Province:
					parentRegionTypes.Add(Sax.RegionType.Country);
					parentRegionTypes.Add(Sax.RegionType.Nation);
					break;
			}
			return parentRegionTypes;
		}
		public static bool IsValidParentRegionType(Sax.RegionType regionType, Sax.RegionType parentRegionType)
		{
			return GetValidParentRegionTypes(regionType).Contains(parentRegionType);
		}
		public bool IsValidParentRegionType(Sax.RegionType parentRegionType)
		{
			return IsValidParentRegionType(RegionType, parentRegionType);
		}

		//-------------------------------------------------------------------
		// Properties.
		public Data GetData() { return data.Clone(); }
		public void SetData(Data data)
		{
			// Properties that cannot be changed if previously specified.
			if (SysId.IsValid(Id) && SysId.ToInt(Id) != SysId.ToInt(data.Id))
				throw new NotSupportedException($"{SysUtil.Fn} Id cannot be changed");
			this.data.PopulateFrom(data);
		}
		public Sax.RegionType RegionType
		{
			get { return data.RegionType; }
			set { data.RegionType = value; }
		}
		public String CountryIso2Code
		{
			get { return data.CountryIso2Code; }
			set { data.CountryIso2Code = value; }
		}
		public String Name
		{
			get { return data.Name; }
			set { data.Name = value; }
		}
		public Decimal? Latitude
		{
			get { return data.Latitude; }
			set { data.Latitude = value; }
		}
		public Decimal? Longitude
		{
			get { return data.Longitude; }
			set { data.Longitude = value; }
		}
		public SysId RegionIdParent
		{
			get { return data.RegionIdParent; }
			set { data.RegionIdParent = value; }
		}

		//-------------------------------------------------------------------
		// Flags - positions 1-16 available.

		//-------------------------------------------------------------------
		//                   A s s o c i a t e d   D a t a
		//-------------------------------------------------------------------

		//-------------------------------------------------------------------
		//                            P a r a m s
		//-------------------------------------------------------------------
		// List parameters.
		public enum StatusCat
		{
			Any,
			ActiveOnly,
			InactiveOnly,
			NotDeleted,
			DeletedOnly,
		}
		/// <summary>
		/// Item list parameters.
		/// </summary>
		public new class Params : SacsHierarchyItem.Params
		{
			// List filtering.
			public List<SysId> IdsIncluded { get; } = new List<SysId>();
			public List<SysId> IdsExcluded { get; } = new List<SysId>();
			public List<SysId> ParentRegionIdsIncluded { get; } = new List<SysId>();
			public Sax.RegionType RegionType { get; set; }
			public List<String> CountryIso2CodesIncluded { get; } = new List<String>();
			public List<String> CountryIso2CodesExcluded { get; } = new List<String>();
			/// <summary>Generic filter - partial region name, iso2 code or other matching value (tbd).</summary>
			public String RegionFilter { get; set; }
			public String NameFull { get; set; }
			public String NamePartial { get; set; }
			// Common properties.
			public String NotesPartial { get; set; }
			public StatusCat StatusCat { get; set; } = StatusCat.ActiveOnly;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
	// Item list extension methods.
	public static class SaxRegionList
	{
		//-------------------------------------------------------------------
		/// <summary>
		/// Extract the first Region in list with the specified Id.
		/// </summary>
		public static SaxRegion GetRegionById(this List<SaxRegion> values, SysId regionId)
		{
			return values.Find(item => item.Id.Equals(regionId));
		}

		//-------------------------------------------------------------------
	}

	//=======================================================================
}