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;

namespace Sarand.BusinessMgr.Net.Standard.Base.Bus
{
	//=======================================================================
	public abstract class SbmMovement : SbmHierarchyItem
	{
		//-------------------------------------------------------------------
		// Columns.
		public enum Column
		{
			Hidden,
			Pos,
			Id,
			//Movement.
			ItemType, ItemType_Desc, ItemId,
			Type_Desc,
			Movement,
			MovementDate, MovementTime,
			DiaryEntry,
			Quantity,
			MovementIdSource,
			SourceItemType, SourceItemId, SourceItem, SourceItemPos,
			// Commodity.
			Commodity_Code, Commodity_DescBrief,
			// Container.
			Container_Reference, Container_DescBrief,
			Container_TagId,
			Container_Notes, Container_Status,
			Container_Item_ItemType, Container_Item_ItemId,
			Container_Item_Quantity, Container_Item_Status,
			// Location.
			LocationIdFrom, LocationFrom_CategoryDesc,
			LocationFrom_Code, LocationFrom_Name,
			LocationIdTo, LocationTo_CategoryDesc,
			LocationTo_Code, LocationTo_Name,
			// Common properties.
			Notes,
			Flag,
			Status,
			Status_Desc,
			Status_Ind,
			CreateOn_Date,
			UpdateOn_Date,
		}

		//-------------------------------------------------------------------
		/// <summary>Properties other than common.</summary>
		public class DataProperties
		{
			public Sbm.ItemType ItemType { get; set; } = Sbm.ItemType.Unknown;
			public SysId ItemId { get; set; } = new SysId();
			public Sbm.MovementType MovementType { get; set; } = Sbm.MovementType.Unknown;
			public DateTime Movement { get; set; } = DateTime.MinValue;
			public SysId LocationIdFrom { get; set; } = new SysId();
			public SysId LocationIdTo { get; set; } = new SysId();
			public decimal Quantity { get; set; } = 0.0m;
			public SysId MovementIdSource { get; set; } = new SysId();
			public Sbm.ItemType ItemTypeSource { get; set; } = Sbm.ItemType.Unknown;
			public SysId ItemIdSource { get; set; } = new SysId();
		}

		// Data.
		public new class Data : SacsHierarchyItem.Data
		{
			// Data members.
			private readonly DataProperties data = new DataProperties();
			// Construction.
			public Data()
			{
				Status = DefaultStatus;
			}

			public Sbm.ItemType ItemType
			{
				get { return data.ItemType; }
				set { CheckChanged((int)data.ItemType, (int)value); data.ItemType = value; }
			}
			public SysId ItemId
			{
				get { return data.ItemId; }
				set { CheckChanged(data.ItemId, value); data.ItemId = value; }
			}
			public Sbm.MovementType MovementType
			{
				get { return data.MovementType; }
				set { CheckChanged((int)data.MovementType, (int)value); data.MovementType = value; }
			}
			public DateTime Movement
			{
				get { return data.Movement; }
				set { CheckChanged(data.Movement, value); data.Movement = value; }
			}
			public SysId LocationIdFrom
			{
				get { return data.LocationIdTo; }
				set { CheckChanged(data.LocationIdTo, value); data.LocationIdTo = value; }
			}
			public SysId LocationIdTo
			{
				get { return data.LocationIdTo; }
				set { CheckChanged(data.LocationIdTo, value); data.LocationIdTo = value; }
			}
			public decimal Quantity
			{
				get { return data.Quantity; }
				set { CheckChanged(data.Quantity, value); data.Quantity = value; }
			}
			public SysId MovementIdSource
			{
				get { return data.MovementIdSource; }
				set { CheckChanged(data.MovementIdSource, value); data.MovementIdSource = value; }
			}
			public Sbm.ItemType ItemTypeSource
			{
				get { return data.ItemTypeSource; }
				set { CheckChanged((int)data.ItemTypeSource, (int)value); data.ItemTypeSource = value; }
			}
			public SysId ItemIdSource
			{
				get { return data.ItemIdSource; }
				set { CheckChanged(data.ItemIdSource, value); data.ItemIdSource = value; }
			}

			internal void PopulateFrom(Data data)
			{
				ItemType = data.ItemType;
				ItemId = data.ItemId;
				MovementType = data.MovementType;
				Movement = data.Movement;
				LocationIdFrom = data.LocationIdFrom;
				LocationIdTo = data.LocationIdTo;
				Quantity = data.Quantity;
				MovementIdSource = data.MovementIdSource;
				ItemTypeSource = data.ItemTypeSource;
				ItemIdSource = data.ItemIdSource;
				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 ItemType { get; set; } = ValidValue.Valid;
			public ValidValue ItemId { get; set; } = ValidValue.Valid;
			public ValidValue MovementType { get; set; } = ValidValue.Valid;
			public ValidValue Movement { get; set; } = ValidValue.Valid;
			public ValidValue LocationIdFrom { get; set; } = ValidValue.Valid;
			public ValidValue LocationIdTo { get; set; } = ValidValue.Valid;
			public ValidValue Quantity { get; set; } = ValidValue.Valid;
			public ValidValue MovementIdSource { get; set; } = ValidValue.Valid;
			public ValidValue ItemTypeSource { get; set; } = ValidValue.Valid;
			public ValidValue ItemIdSource { get; set; } = ValidValue.Valid;
		}

		//-------------------------------------------------------------------
		// Data members.
		private readonly Data data = new Data();
		public static readonly Byte Flag_DiaryEntry = 0x01;
		//-------------------------------------------------------------------
		// Construction.
		protected SbmMovement(SysId id, Sbm.ItemType itemType, SysId itemId, Sbm.MovementType movementType) : base(id)
		{
			base.SetData(data);
			ItemType = itemType;
			ItemId = itemId;
			MovementType = movementType;
			Status = DefaultStatus;
		}

		//-------------------------------------------------------------------
		// Movement status.
		private static readonly List<SaStatus> movementStatuses = new List<SaStatus>()
		{
			SaStatus.Awaiting,
			SaStatus.Actioned,
			SaStatus.Cancelled,
		};
		public static SaStatus DefaultStatus { get { return SaStatus.Current; } }
		public static List<SaStatus> MovementStatuses { get { return new List<SaStatus>(movementStatuses); } }
		public static DataValue.TriStateType GetStatusTriState(SaStatus status)
		{
			switch (status)
			{
				case SaStatus.Actioned:
					return DataValue.TriStateType.Green;
				case SaStatus.Awaiting:
					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.Movement, 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 Sbm.ItemType ItemType
		{
			get { return data.ItemType; }
			set { data.ItemType = value; }
		}
		public SysId ItemId
		{
			get { return data.ItemId; }
			set { data.ItemId = value; }
		}
		public Sbm.MovementType MovementType
		{
			get { return data.MovementType; }
			set { data.MovementType = value; }
		}
		public DateTime Movement
		{
			get { return data.Movement; }
			set { data.Movement = value; }
		}
		public SysId LocationIdFrom
		{
			get { return data.LocationIdTo; }
			set { data.LocationIdTo = value; }
		}
		public SysId LocationIdTo
		{
			get { return data.LocationIdTo; }
			set { data.LocationIdTo = value; }
		}
		public decimal Quantity
		{
			get { return data.Quantity; }
			set { data.Quantity = value; }
		}
		public SysId MovementIdSource
		{
			get { return data.MovementIdSource; }
			set { data.MovementIdSource = value; }
		}
		public Sbm.ItemType ItemTypeSource
		{
			get { return data.ItemTypeSource; }
			set { data.ItemTypeSource = value; }
		}
		public SysId ItemIdSource
		{
			get { return data.ItemIdSource; }
			set { data.ItemIdSource = value; }
		}

		//-------------------------------------------------------------------
		// Flags.
		public bool DiaryEntry
		{
			get { return GetFlag(Flag_DiaryEntry); }
			set { SetFlag(Flag_DiaryEntry, 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 HasMovements() { return true; }

		//-------------------------------------------------------------------
		//                            P a r a m s
		//-------------------------------------------------------------------
		/// <summary>Parameters - used to define the filters that should be applied to a List of Movements</summary>
		// List parameters.
		public enum StatusCat
		{
			Any,
			AwaitingOnly,
			ActionedOnly,
			/// <summary>Awaiting or Actioned.</summary>
			AwaitingOrActioned,
			CancelledOnly,
			NotDeleted,
			DeletedOnly
		}
		/// <summary>
		/// Item list parameters.
		/// </summary>
		public new class Params : SacsHierarchyItem.Params
		{
			// List filtering.
			public HashSet<SysId> IdsIncluded { get; } = new HashSet<SysId>();
			public HashSet<SysId> IdsExcluded { get; } = new HashSet<SysId>();
			// Movement.
			public Sbm.ItemType ItemType { get; set; }
			public Sbm.ItemType ItemTypeSource { get; set; }
			public HashSet<SysId> ItemIds { get; set; }
			public HashSet<SysId> ItemIdsSource { get; set; }
			public Sbm.ItemType ContainerItemType { get; set; }
			public SysId ContainerItemId { get; set; }
			public HashSet<SysId> ItemIdSource { get; set; }
			public bool ExcludeProvisionalContainers { get; set; } = true;
			public Sbm.MovementType MovementType { get; set; }
			public DateTime MovementFrom { get; set; }
			public DateTime MovementTo { get; set; }
			public SysId LocationId { get; set; }
			public SysId LocationIdFrom { get; set; }
			public SysId LocationIdTo { get; set; }
			public bool RestrictToSalesStockLocations { get; set; }
			public bool RestrictToCalculateStockLocations { get; set; }
			public bool IncludeRequirementsForTransactions { get; set; }
			public SysId MovementIdSource { get; set; }
			/// <summary>Movement status.</summary>
			public StatusCat StatusCat { get; set; } = StatusCat.NotDeleted;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
	//                 M o v e m e n t   D a t a   L i s t
	//=======================================================================
	public static class SbmMovementList
	{
		//-------------------------------------------------------------------
		/// <summary>Sort the list by movement date.</summary>
		public enum SortMode { MovementSortAscend, MovementSortDescend };
		public static int CompareMovementByMovementDate(SbmMovement movement1, SbmMovement movement2, bool ascending)
		{
			if (movement1 != null || movement2 != null) return -1;
			return movement1.Movement.CompareTo(movement2.Movement) * (ascending ? 1 : -1);
		}
		public static void Sort(this List<SbmMovement> values, SortMode movementSort)
		{
			if (movementSort == SortMode.MovementSortAscend)
				values.Sort(
					delegate (SbmMovement movement1, SbmMovement movement2)
					{
						return CompareMovementByMovementDate(movement1, movement2, true);
					}
				);
			else if (movementSort == SortMode.MovementSortDescend)
				values.Sort(
					delegate (SbmMovement movement1, SbmMovement movement2)
					{
						return CompareMovementByMovementDate(movement1, movement2, false);
					}
				);
		}
		//-------------------------------------------------------------------
		// Finding.
		public static bool Find(this List<SbmMovement> values, SbmMovement movement)
		{
			if (movement == null) return false;
			return values.Exists(item => item == movement);
		}
		public static bool FindById(this List<SbmMovement> values, SysId id)
		{
			if (!SysId.IsValid(id)) return false;
			return values.Exists(item => item.Id.Equals(id));
		}
		public static bool FindByDateStatus(this List<SbmMovement> values, DateTime movementOn, SaStatus saStatus, int iPos)
		{
			if (!DateUtil.IsValid(movementOn)) return false;
			return values.Exists(item => item.Movement.Date.Equals(movementOn.Date) && item.Status.Equals(saStatus));
		}
		public static bool FindByStatus(this List<SbmMovement> values, SaStatus saStatus)
		{
			//if (saStatus == null) return false;
			return values.Exists(item => item.Status.Equals(saStatus));
		}

		//-------------------------------------------------------------------
		// Calculate quantity:
		public static decimal GetQuantityByStatus(this List<SbmMovement> values, SaStatus saStatus)
		{
			decimal quantity = 0.0m;
			foreach (SbmMovement movementItem in values)
			{
				if (movementItem.ItemType == Sbm.ItemType.Commodity && movementItem.Status == saStatus)
					quantity += movementItem.Quantity;
			}
			return quantity;
		}

		//-------------------------------------------------------------------
		// Count items in the list:
		public static int GetCountByStatus(this List<SbmMovement> values, SaStatus saStatus)
		{
			int iCount = 0;
			foreach (SbmMovement movementItem in values)
			{
				if (movementItem.Status == saStatus)
					iCount++;
			}
			return iCount;
		}

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