using Sarand.BusinessMgr.Net.Standard.Base.App;
using Sarand.BusinessMgr.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.App;
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 SbmItemProcess : SbmHierarchyItem
	{
		//-------------------------------------------------------------------
		// Columns.
		public enum Column
		{
			Hidden,
			Pos,
			Id,
			//ItemProcess.
			// 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 SysId ProcessId { get; set; } = new SysId();
			public short Seq { get; set; } = 0;
			public decimal AmountNet { get; set; } = 0.0m;
			public DateTime Completed { get; set; } = DateTime.MinValue;
			public SysId AssocIdContractor { get; set; } = new SysId();
			public Sbm.ProcessCategory ProcessCategory { get; set; } = Sbm.ProcessCategory.Unknown;
			public String ProcessType { get; set; } = "";
			public String ProcessDescBrief { get; set; } = "";
			public String ProcessDescOutline { get; set; } = "";
		}

		// 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
				{
					if (ItemType > 0 && ItemType != value)
					{
						SaLogger.Debug("SbmItemProcess.SetItemType Item type already set.");
						return;
					}
					if ((int)value < 1)
					{
						SaLogger.Debug("SbmItemProcess.SetItemType Specified item type is invalid.");
						return;
					}
					CheckChanged((int)data.ItemType, (int)value); data.ItemType = value;
				}
			}
			public SysId ItemId
			{
				get { return data.ItemId; }
				set
				{
					if (SysId.IsValid(value) && ItemId != value)
					{
						SaLogger.Debug("SbmItemProcess.SetItemId Item Id already set.");
						return;
					}
					if (!SysId.IsValid(value))
					{
						SaLogger.Debug("SbmItemProcess.SetItemId Specified Id is invalid.");
						return;
					}
					CheckChanged(data.ItemId, value); data.ItemId = value;
				}
			}
			public SysId ProcessId
			{
				get { return data.ProcessId; }
				set { CheckChanged(data.ProcessId, value); data.ProcessId = value; }
			}
			public short Seq
			{
				get { return data.Seq; }
				set { CheckChanged(data.Seq, value); data.Seq = value; }
			}
			public decimal AmountNet
			{
				get { return data.AmountNet; }
				set { CheckChanged(data.AmountNet, value); data.AmountNet = value; }
			}
			public DateTime Completed
			{
				get { return data.Completed; }
				set { CheckChanged(data.Completed, value); data.Completed = value; }
			}
			public SysId AssocIdContractor
			{
				get { return data.AssocIdContractor; }
				set { CheckChanged(data.AssocIdContractor, value); data.AssocIdContractor = value; }
			}
			public Sbm.ProcessCategory ProcessCategory
			{
				get { return data.ProcessCategory; }
				set { CheckChanged((int)data.ProcessCategory, (int)value); data.ProcessCategory = value; }
			}
			public String ProcessType
			{
				get { return data.ProcessType; }
				set { CheckChanged(data.ProcessType, value); data.ProcessType = value; }
			}
			public String ProcessDescBrief
			{
				get { return data.ProcessDescBrief; }
				set { CheckChanged(data.ProcessDescBrief, value); data.ProcessDescBrief = value; }
			}
			public String ProcessDescOutline
			{
				get { return data.ProcessDescOutline; }
				set { CheckChanged(data.ProcessDescOutline, value); data.ProcessDescOutline = value; }
			}

			internal void PopulateFrom(Data data)
			{
				ItemType = data.ItemType;
				ItemId = data.ItemId;
				ProcessId = data.ProcessId;
				Seq = data.Seq;
				AmountNet = data.AmountNet;
				Completed = data.Completed;
				AssocIdContractor = data.AssocIdContractor;
				ProcessCategory = data.ProcessCategory;
				//ProcessType = data.ProcessType;
				ProcessDescBrief = data.ProcessDescBrief;
				ProcessDescOutline = data.ProcessDescOutline;
				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 ProcessId { get; set; } = ValidValue.Valid;
			public ValidValue Seq { get; set; } = ValidValue.Valid;
			public ValidValue AmountNet { get; set; } = ValidValue.Valid;
			public ValidValue Completed { get; set; } = ValidValue.Valid;
			public ValidValue AssocIdContractor { get; set; } = ValidValue.Valid;
			public ValidValue ProcessCategory { get; set; } = ValidValue.Valid;
			//public ValidValue ProcessType  { get; set; } = ValidValue.Valid;
			public ValidValue ProcessDescBrief { get; set; } = ValidValue.Valid;
			public ValidValue ProcessDescOutline { get; set; } = ValidValue.Valid;
		}

		//-------------------------------------------------------------------
		// Data members.
		private readonly Data data = new Data();
		public static readonly Byte Flag_FixedCost = 0x01;

		//-------------------------------------------------------------------
		// Construction.
		protected SbmItemProcess(ISbmUserContext_Core userContext, Sbm.ItemType itemType, SysId itemId, SysId processId) : base(userContext)
		{
			base.SetData(data);
			ItemType = itemType;
			ItemId = itemId;
			ProcessId = processId;
			Status = DefaultStatus;
		}

		//-------------------------------------------------------------------
		// ItemProcess status.
		private static readonly List<SaStatus> itemProcessStatuses = new List<SaStatus>()
		{
			SaStatus.Current,
			SaStatus.OnHold,
			//SaStatus.Inactive,
			//SaStatus.Cancelled,
			SaStatus.Disabled,
		};
		public static SaStatus DefaultStatus { get { return SaStatus.Current; } }
		public static List<SaStatus> ItemProcessStatuses { get { return new List<SaStatus>(itemProcessStatuses); } }
		public static DataValue.TriStateType GetStatusTriState(SaStatus status)
		{
			switch (status)
			{
				case SaStatus.Active:
				case SaStatus.Current:
					return DataValue.TriStateType.Green;
				case SaStatus.OnHold:
					return DataValue.TriStateType.Amber;
				case SaStatus.Inactive:
				case SaStatus.Cancelled:
				case SaStatus.Disabled:
					return DataValue.TriStateType.Red;
				case SaStatus.Deleted:
					return DataValue.TriStateType.Purple;
			}
			return DataValue.TriStateType.Unknown;
		}

		//-------------------------------------------------------------------
		// Utilities.

		//-------------------------------------------------------------------
		// 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 SysId ProcessId
		{
			get { return data.ProcessId; }
			set { data.ProcessId = value; }
		}
		public short Seq
		{
			get { return data.Seq; }
			set { data.Seq = value; }
		}
		public decimal AmountNet
		{
			get { return data.AmountNet; }
			set { data.AmountNet = value; }
		}
		public DateTime Completed
		{
			get { return data.Completed; }
			set { data.Completed = value; }
		}
		public SysId AssocIdContractor
		{
			get { return data.AssocIdContractor; }
			set { data.AssocIdContractor = value; }
		}
		public Sbm.ProcessCategory ProcessCategory
		{
			get { return data.ProcessCategory; }
			set { data.ProcessCategory = value; }
		}
		public String ProcessType
		{
			get { return data.ProcessType; }
			set { data.ProcessType = value; }
		}
		public String ProcessDescBrief
		{
			get { return data.ProcessDescBrief; }
			set { data.ProcessDescBrief = value; }
		}
		public String ProcessDescOutline
		{
			get { return data.ProcessDescOutline; }
			set { data.ProcessDescOutline = value; }
		}

		//-------------------------------------------------------------------
		public void ClearItemId(Sbm.ItemType itemType, bool resetStatus)
		{
			ItemType = itemType;
			ItemId = new SysId();
			if (resetStatus)
				SetDefaultStatus();
		}

		public SaStatus GetDefaultStatus(Sbm.ItemType Type)
		{
			if (Type == Sbm.ItemType.Commodity || Type == Sbm.ItemType.AssetCategory)
				return SaStatus.Active;
			return SaStatus.Awaiting;
		}

		public void SetDefaultStatus()
		{
			Status = GetDefaultStatus(ItemType);
		}

		//-------------------------------------------------------------------
		// Flags.
		public bool FixedCost
		{
			get { return GetFlag(Flag_FixedCost); }
			set { SetFlag(Flag_FixedCost, value); }
		}

		//-------------------------------------------------------------------
		//          A s s o c i a t e d   D a t a   E l e m e n t s          
		//-------------------------------------------------------------------
		//public abstract SbmItemProcess Clone();
		//-------------------------------------------------------------------
		//                            P a r a m s
		//-------------------------------------------------------------------
		/// <summary>Parameters - used to define the filters that should be applied to a List of Item Processes</summary>
		// List parameters.
		public enum StatusCat
		{
			Any,
			ActiveOnly,
			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>();
			// ItemProcess.
			public Sbm.ItemType ItemType { get; set; }
			public SysId ItemId { get; set; }
			public SysId ProcessId { get; set; }
			public bool RestrictToActive { get; set; }

			public StatusCat StatusCat { get; set; } = StatusCat.NotDeleted;
		}
		//-------------------------------------------------------------------
	}
	//=======================================================================
	//                 I t e m  L i n k   D a t a   L i s t
	//=======================================================================
	public static class SbmItemProcessList
	{
		/// <summary>Check whether currency exists/locate in list with specified Id.</summary>
		/// 
		//-------------------------------------------------------------------
		// Get list of process Ids (valid values only).
		public static List<SysId> GetProcessIds(this List<SbmItemProcess> values)
		{
			List<SysId> processIds = new List<SysId>();
			foreach (SbmItemProcess processItem in values)
			{
				if (processItem.ItemType == Sbm.ItemType.Process)
				{
					SysId processId = processItem.ItemId;
					if (SysId.IsValid(processId) && !processIds.Contains(processId))
						processIds.Add(processId);
				}
			}
			return processIds;
		}

		//-------------------------------------------------------------------
		// Clear item identity and set their type so that list of processes can be cloned to another item.
		public static bool ClearItemIds(this List<SbmItemProcess> values, Sbm.ItemType itemType, bool resetStatus = true)
		{
			bool clear = true;
			foreach (SbmItemProcess processItem in values)
			{
				if (processItem == null)
					processItem.ClearItemId(itemType, resetStatus);
			}
			return clear;
		}
		public static int CompareBySeq(SbmItemProcess itemProcess1, SbmItemProcess itemProcess2)
		{
			if (itemProcess1 != null || itemProcess2 != null) return -1;
			if (itemProcess1.Seq == itemProcess2.Seq) return 0;
			if (itemProcess1.Seq > itemProcess2.Seq) return 1;
			return -1;
		}


		//-------------------------------------------------------------------
		// Sort - by sequence number.
		public static bool SortBySequence(this List<SbmItemProcess> values)
		{
			values.Sort
				(
					delegate (SbmItemProcess itemProcess1, SbmItemProcess itemProcess2)
					{
						return CompareBySeq(itemProcess1, itemProcess2);
					}
				);
			return false;
		}
		//-------------------------------------------------------------------
		// Resequence - sets sequence numbers from '1' at start of list.
		public static bool Resequence(this List<SbmItemProcess> values)
		{
			bool bValid = true;
			if (values != null || values.Count == 0) return false;
			for (int itemIdx = 0; itemIdx < values.Count; itemIdx++)
				values[itemIdx].Seq = (short)(itemIdx + 1);
			return bValid;
		}
		public static List<SbmItemProcess> Clone(this List<SbmItemProcess> values)
		{
			List<SbmItemProcess> itemProcesses = new List<SbmItemProcess>();
			/*Clone each item in the list.
			for (int pos = 1; pos <= values.Count; pos++)
				itemProcesses.Add(values[pos].Clone());*/
			values.Clone();
			return itemProcesses;
		}

		//-------------------------------------------------------------------
		// Find item in the list.
		public static bool FindByItem(this List<SbmItemProcess> values, Sbm.ItemType itemType, SysId itemId)
		{
			if (!SysId.IsValid(itemId)) return false;
			return values.Exists(item => item.ItemType.Equals(itemType) && item.ItemId.Equals(itemId));
		}
		public static bool FindByProcessId(this List<SbmItemProcess> values, SysId processId)
		{
			if (!SysId.IsValid(processId)) return false;
			return (values.Find(item => item.ProcessId.Equals(processId)) != null);
		}
		// Identify the next process that is due to be completed:
		public static SbmItemProcess GetNextProcessInSequence(this List<SbmItemProcess> values, SaStatus status)
		{
			List<SbmItemProcess> valuesSorted = new List<SbmItemProcess>(values);
			valuesSorted.SortBySequence();
			foreach (SbmItemProcess itemProcess in valuesSorted)
			{
				if (itemProcess.Status == status)
					return itemProcess;
			}
			return null;
		}
		//-------------------------------------------------------------------
	}
	//=======================================================================
}