using Sarand.BusinessMgr.Net.Standard.Base.App;
using Sarand.BusinessMgr.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Utils;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Sarand.BusinessMgr.Net.Standard.Base.Bus
{
	//=======================================================================
	public abstract class SbmStockLevel : SbmHierarchyItem
	{
		//-------------------------------------------------------------------
		// Columns.
		public enum Column
		{
			//Hidden.
			Pos,
			Id,
			// StockLevel.
			CommodityId,
			LocationId,
			Type,
			Type_Desc,
			Source,
			Source_Desc,
			Quantity,
			Recorded,
			RecordedDate,
			RecordedTime,
			// Commodity details.
			Commodity_Code,
			Commodity_DescBrief,
			// Location details.
			Location_CategoryDesc,
			Location_Code,
			Location_Name,
			// Common properties.
			Notes,
			Flag,
			Status,
			Status_Desc,
			Status_Ind,
			CreateOn_Date,
			UpdateOn_Date,
		}

		//-------------------------------------------------------------------
		/// <summary>Properties other than common.</summary>
		public class DataProperties
		{
			public SysId CommodityId { get; set; } = new SysId();
			public SysId LocationId { get; set; } = new SysId();
			public Sbm.StockLevelType Type { get; set; } = Sbm.StockLevelType.Unknown;
			public Sbm.StockLevelSource Source { get; set; } = Sbm.StockLevelSource.Unknown;
			public decimal Quantity { get; set; } = 0.0m;
			public DateTime Recorded { get; set; } = DateTime.MinValue;
			public String Bay1 { get; set; } = "";
			public String Bay2 { get; set; } = "";
			public String Bay3 { get; set; } = "";
		}

		// Data.
		public new class Data : SacsHierarchyItem.Data
		{
			// Data members.
			private readonly DataProperties data = new DataProperties();
			// Construction.
			public Data()
			{
				Status = DefaultStatus;
			}
			public SysId CommodityId
			{
				get { return data.CommodityId; }
				set { CheckChanged(data.CommodityId, value); data.CommodityId = value; }
			}
			public SysId LocationId
			{
				get { return data.LocationId; }
				set { CheckChanged(data.LocationId, value); data.LocationId = value; }
			}
			public Sbm.StockLevelType Type
			{
				get { return data.Type; }
				set { CheckChanged((int)data.Type, (int)value); data.Type = value; }
			}
			public Sbm.StockLevelSource Source
			{
				get { return data.Source; }
				set { CheckChanged((int)data.Source, (int)value); data.Source = value; }
			}
			public decimal Quantity
			{
				get { return data.Quantity; }
				set { CheckChanged(data.Quantity, value); data.Quantity = value; }
			}
			public DateTime Recorded
			{
				get { return data.Recorded; }
				set { CheckChanged(data.Recorded, value); data.Recorded = value; }
			}
			public String Bay1
			{
				get { return data.Bay1; }
				set { CheckChanged(data.Bay1, value); data.Bay1 = value; }
			}
			public String Bay2
			{
				get { return data.Bay2; }
				set { CheckChanged(data.Bay2, value); data.Bay2 = value; }
			}
			public String Bay3
			{
				get { return data.Bay3; }
				set { CheckChanged(data.Bay3, value); data.Bay3 = value; }
			}

			internal void PopulateFrom(Data data)
			{
				CommodityId = data.CommodityId;
				LocationId = data.LocationId;
				Type = data.Type;
				Source = data.Source;
				Quantity = data.Quantity;
				Recorded = data.Recorded;
				Bay1 = data.Bay1;
				Bay2 = data.Bay2;
				Bay3 = data.Bay3;
				base.PopulateFrom(data);
			}
			public Data Clone()
			{
				Data data = new Data();
				data.PopulateFrom(this);
				return data;
			}
		}

		public new class ErrField : SacsHierarchyItem.ErrField
		{
			// Identifies the field that has invalid data.
			public ValidValue CommodityId { get; set; } = ValidValue.Valid;
			public ValidValue LocationId { get; set; } = ValidValue.Valid;
			public ValidValue Type { get; set; } = ValidValue.Valid;
			public ValidValue Source { get; set; } = ValidValue.Valid;
			public ValidValue Quantity { get; set; } = ValidValue.Valid;
			public ValidValue Recorded { get; set; } = ValidValue.Valid;
			public ValidValue Bay1 { get; set; } = ValidValue.Valid;
			public ValidValue Bay2 { get; set; } = ValidValue.Valid;
			public ValidValue Bay3 { get; set; } = ValidValue.Valid;
		}

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

		//-------------------------------------------------------------------
		// Construction.
		protected SbmStockLevel(SysId id, SysId idCommodity, SysId idLocation, Sbm.StockLevelType type, Sbm.StockLevelSource source) : base(id)
		{
			base.SetData(data);
			CommodityId = idCommodity;
			LocationId = idLocation;
			Type = type;
			Source = source;
			Status = DefaultStatus;
		}

		//-------------------------------------------------------------------
		// StockLevel status.
		private static readonly List<SaStatus> stockLevelStatuses = new List<SaStatus>()
		{
			SaStatus.Current,
			SaStatus.Confirmed,
			SaStatus.Queried,
			SaStatus.Cancelled,
			SaStatus.Deleted,
		};
		public static SaStatus DefaultStatus { get { return SaStatus.Current; } }
		public static List<SaStatus> GetValidStatusesByType(Sbm.StockLevelType type)
		{
			switch (type)
			{
				case Sbm.StockLevelType.CurrentLevel:
					return new List<SaStatus>() { SaStatus.Current };
				case Sbm.StockLevelType.StockTake:
					return new List<SaStatus>() { SaStatus.Confirmed, SaStatus.Queried, SaStatus.Cancelled, SaStatus.Deleted };
			}
			return new List<SaStatus>() { SaStatus.Deleted };
		}
		public static DataValue.TriStateType GetStatusTriState(SaStatus status)
		{
			switch (status)
			{
				case SaStatus.Confirmed:
				case SaStatus.Current:
					return DataValue.TriStateType.Green;
				case SaStatus.Queried:
					return DataValue.TriStateType.Amber;
				case SaStatus.Cancelled:
					return DataValue.TriStateType.Red;
				case SaStatus.Deleted:
					return DataValue.TriStateType.Purple;
			}
			return DataValue.TriStateType.Unknown;
		}

		//-------------------------------------------------------------------
		// Utilities.
		public SbmItemId GetItemId()
		{
			return new SbmItemId(Sbm.ItemType.StockLevel, Id);
		}

		//-------------------------------------------------------------------
		// 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");
			// Populate individual properties to ensure that 'Changed' indicator is kept up to date.
			this.data.PopulateFrom(data);
		}

		//-------------------------------------------------------------------
		// Attributes.
		public SysId CommodityId
		{
			get { return data.CommodityId; }
			set { data.CommodityId = value; }
		}
		public SysId LocationId
		{
			get { return data.LocationId; }
			set { data.LocationId = value; }
		}
		public Sbm.StockLevelType Type
		{
			get { return data.Type; }
			set { data.Type = value; }
		}
		public Sbm.StockLevelSource Source
		{
			get { return data.Source; }
			set { data.Source = value; }
		}
		public decimal Quantity
		{
			get { return data.Quantity; }
			set { data.Quantity = value; }
		}
		public DateTime Recorded
		{
			get { return data.Recorded; }
			set { data.Recorded = value; }
		}
		public String Bay1
		{
			get { return data.Bay1; }
			set { data.Bay1 = value; }
		}
		public String Bay2
		{
			get { return data.Bay2; }
			set { data.Bay2 = value; }
		}
		public String Bay3
		{
			get { return data.Bay3; }
			set { data.Bay3 = value; }
		}

		//-------------------------------------------------------------------
		//          A s s o c i a t e d   D a t a   E l e m e n t s          
		//-------------------------------------------------------------------
		public virtual bool HasStockLevels() { return true; }

		//-------------------------------------------------------------------
		//                            P a r a m s
		//-------------------------------------------------------------------
		/// <summary>Parameters - used to define the filters that should be applied to a List of Stock Levels</summary>
		// List parameters.
		public enum StatusCat
		{
			Any,
			/// <summary>Not cancelled or deleted.</summary>
			ActiveOnly,
			ConfirmedOnly,
			QueriedOnly,
			DeletedOnly,
			NotDeleted,
		}
		/// <summary>
		/// Item list parameters.
		/// </summary>
		public new class Params : SacsHierarchyItem.Params
		{
			public Params() { }
			public Params(Params prm)
			{
				IdsIncluded.UnionWith(prm.IdsIncluded);
				IdsExcluded.UnionWith(prm.IdsExcluded);
				// Stock Level.
				CommodityId = prm.CommodityId;
				CommodityCodePartial = prm.CommodityCodePartial;
				LocationId = prm.LocationId;
				RestrictToSalesStockLocations = prm.RestrictToSalesStockLocations;
				RestrictToCalculateStockLocations = prm.RestrictToCalculateStockLocations;
				Type = prm.Type;
				RecordedFrom = prm.RecordedFrom;
				RecordedTo = prm.RecordedTo;
				MostRecentOnly = prm.MostRecentOnly;
				StatusCat = prm.StatusCat;
				// Table aliases.
				tableAlias_Commodity = prm.tableAlias_Commodity;
				tableAlias_Location = prm.tableAlias_Location;
			}
			// List filtering.
			public HashSet<SysId> IdsIncluded { get; } = new HashSet<SysId>();
			public HashSet<SysId> IdsExcluded { get; } = new HashSet<SysId>();
			// Stock Level.
			public SysId CommodityId { get; set; }
			public String CommodityCodePartial { get; set; }
			public SysId LocationId { get; set; }
			public bool RestrictToSalesStockLocations { get; set; }
			public bool RestrictToCalculateStockLocations { get; set; }
			public Sbm.StockLevelType Type { get; set; } = Sbm.StockLevelType.Any;
			public DateTime RecordedFrom { get; set; }
			public DateTime RecordedTo { get; set; }
			public bool MostRecentOnly { get; set; }
			/// <summary>Stock Level status.</summary>
			public StatusCat StatusCat { get; set; } = StatusCat.NotDeleted;
			// Table aliases.
			public String tableAlias_Commodity { get; set; }
			public String tableAlias_Location { get; set; }
		}
		//-------------------------------------------------------------------
	}

	//=======================================================================
	//                    S t o c k   L e v e l   L i s t
	//=======================================================================
	public static class SbmStockLevelList
	{
		public static bool Find(this List<SbmStockLevel> values, SbmStockLevel stockLevel)
		{
			if (stockLevel == null) return false;
			return values.Any(item => item == stockLevel);
		}
		public static SbmStockLevel FindById(this List<SbmStockLevel> values, SysId id)
		{
			if (!SysId.IsValid(id)) return null;
			return values.FirstOrDefault(item => item.Id.Equals(id));
		}
		public static SbmStockLevel GetByCommodityId(this List<SbmStockLevel> values, SysId commodityId)
		{
			if (!SysId.IsValid(commodityId)) return null;
			return values.FirstOrDefault(item => item.CommodityId.Equals(commodityId));
		}
		public static SbmStockLevel GetByLocationId(this List<SbmStockLevel> values, SysId locationId)
		{
			if (!SysId.IsValid(locationId)) return null;
			return values.FirstOrDefault(item => item.LocationId.Equals(locationId));
		}
	}

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