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

namespace Saxonite.Net.Standard.Base.Bus
{
	//=======================================================================
	// User Eligibility.
	//=======================================================================
	public abstract class SaxUserEligibility : SaxDisposableHierarchyItem
	{
		//-------------------------------------------------------------------
		// Columns.
		public enum Column
		{
			Pos,
			Id,
			// User.
			UserAccountId,
			User_EmailAddress,
			User_DisplayName,
			User_Title,
			User_FirstName,
			User_LastName,
			// Region.
			RegionId,
			Region_Type,
			Region_Type_Desc,
			Region_CountryIso2Code,
			Region_Name,
			Region_ParentId,
			// Eligibility.
			EligibilityType,
			EligibilityType_Desc,
			Info,
			ExpiresOn,
			// Associated data.
			// Common.
			Notes,
			Flags,
			Status,
			Status_Desc,
			Status_Ind,
			CreateOn_Date,
			UpdateOn_Date,
		}

		//-------------------------------------------------------------------
		/// <summary>Properties other than common.</summary>
		public class DataProperties
		{
			public SysId UserAccountId { get; set; }
			public SysId RegionId { get; set; }
			public String Info { get; set; }
			public Sax.EligibilityType EligibilityType { get; set; }
			public DateTime? ExpiresOn { get; set; } = null;
		}

		//-------------------------------------------------------------------
		// Data.
		public new class Data : SacsHierarchyItem.Data
		{
			// Data members.
			private readonly DataProperties data = new DataProperties();
			// Construction.
			public Data()
			{
				Status = DefaultStatus;
			}
			// Properties.
			public SysId UserAccountId
			{
				get { return data.UserAccountId; }
				set { CheckChanged(data.UserAccountId, value); data.UserAccountId = value; }
			}
			public SysId RegionId
			{
				get { return data.RegionId; }
				set { CheckChanged(data.RegionId, value); data.RegionId = value; }
			}
			public Sax.EligibilityType EligibilityType
			{
				get { return data.EligibilityType; }
				set { CheckChanged((int)data.EligibilityType, (int)value); data.EligibilityType = value; }
			}
			public String Info
			{
				get { return data.Info; }
				set { CheckChanged(data.Info, value); data.Info = value; }
			}
			public DateTime? ExpiresOn
			{
				get { return data.ExpiresOn; }
				set { CheckChangedNullable(data.ExpiresOn, value); data.ExpiresOn = value; }
			}
			// Population.
			internal void PopulateFrom(Data data)
			{
				UserAccountId = data.UserAccountId;
				RegionId = data.RegionId;
				EligibilityType = data.EligibilityType;
				Info = data.Info;
				ExpiresOn = data.ExpiresOn;
				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 UserAccountId { get; set; } = ValidValue.Valid;
			public ValidValue RegionId { get; set; } = ValidValue.Valid;
			public ValidValue EligibilityType { get; set; } = ValidValue.Valid;
			public ValidValue Info { get; set; } = ValidValue.Valid;
			public ValidValue ExpiresOn { get; set; } = ValidValue.Valid;
		}

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

		//-------------------------------------------------------------------
		// Construction.
		protected SaxUserEligibility(SysId id, SysId userAccountId, SysId regionId, Sax.EligibilityType eligibilityType) : base(id)
		{
			base.SetData(data);
			UserAccountId = userAccountId;
			RegionId = regionId;
			EligibilityType = eligibilityType;
			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.UserEligibility, Id);
		}

		/// <summary>Maximum number of instances per user, regardless of region.</summary>
		public static int GetMaxInstances(Sax.EligibilityType eligibilityType)
		{
			switch (eligibilityType)
			{
				case Sax.EligibilityType.Birth: return 1;
				case Sax.EligibilityType.Naturalised: return 1;
				case Sax.EligibilityType.Parent: return 2;
				case Sax.EligibilityType.Grandparent: return 4;
				case Sax.EligibilityType.Passport: return 9;
				case Sax.EligibilityType.Visa: return 9;
			}
			return 9;
		}

		/// <summary>Does the eligibility allow a date range.</summary>
		public static bool AllowsApplicablePeriod(Sax.EligibilityType eligibilityType)
		{
			switch (eligibilityType)
			{
				//case Sax.EligibilityType.Birth:
				//case Sax.EligibilityType.Naturalised:
				//case Sax.EligibilityType.Parent:
				//case Sax.EligibilityType.Grandparent:
				case Sax.EligibilityType.Passport:
				case Sax.EligibilityType.Visa:
					return true;
			}
			return false;
		}

		//-------------------------------------------------------------------
		// 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($"{SysUtil.Fn} Id cannot be changed");
			if (SysId.IsValid(UserAccountId) && SysId.ToInt(UserAccountId) != SysId.ToInt(data.UserAccountId))
				throw new NotSupportedException($"{SysUtil.Fn} User Account Id cannot be changed");
			if (SysId.IsValid(RegionId) && SysId.ToInt(RegionId) != SysId.ToInt(data.RegionId))
				throw new NotSupportedException($"{SysUtil.Fn} Region Id cannot be changed");
			if (EligibilityType == 0 && (int)EligibilityType != (int)EligibilityType)
				throw new NotSupportedException($"{SysUtil.Fn} User Eligibility cannot be changed");
			this.data.PopulateFrom(data);
		}

		/// <summary>User Account Id. NB Can only be set where previously invalid.</summary>
		public SysId UserAccountId
		{
			get { return data.UserAccountId; }
			protected set
			{
				if (SysId.IsValid(UserAccountId) && SysId.ToInt(UserAccountId) != SysId.ToInt(data.UserAccountId))
					throw new NotSupportedException("EligibilityType.UserAccountId cannot be changed");
				data.UserAccountId = value;
			}
		}

		/// <summary>Region Id. NB Can only be set where previously invalid.</summary>
		public SysId RegionId
		{
			get { return data.RegionId; }
			set
			{
				if (SysId.IsValid(RegionId) && SysId.ToInt(RegionId) != SysId.ToInt(data.RegionId))
					throw new NotSupportedException("EligibilityType.RegionId cannot be changed");
				data.RegionId = value;
			}
		}

		/// <summary>User Eligibility. Can only be populated on construction.</summary>
		public Sax.EligibilityType EligibilityType
		{
			get { return data.EligibilityType; }
			set { data.EligibilityType = value; }
		}

		public String Info
		{
			get { return data.Info; }
			set { data.Info = value; }
		}

		public DateTime? ExpiresOn
		{
			get { return data.ExpiresOn; }
			set { data.ExpiresOn = 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> UserAccountIdsIncluded { get; } = new List<SysId>();
			public List<SysId> RegionIdsIncluded { get; } = new List<SysId>();
			public List<Sax.EligibilityType> EligibilityTypesIncluded { get; } = new List<Sax.EligibilityType>();
			public DateTime ValidOn { get; set; }
			// Common properties.
			public String NotesPartial { get; set; }
			public StatusCat StatusCat { get; set; } = StatusCat.NotDeleted;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
	// Item list extension methods.
	public static class SaxEligibilityTypeList
	{
		//-------------------------------------------------------------------
		/// <summary>Retrieve the first entry in the list matching the specified Region.</summary>
		public static List<SaxUserEligibility> GetEligibilityTypesByStatus(this List<SaxUserEligibility> values, SysId regionId)
		{
			return values.FindAll(item => item.RegionId == regionId);
		}

		//-------------------------------------------------------------------
		/// <summary>Retrieve the first entry in the list matching the specified Eligibility.</summary>
		public static SaxUserEligibility GetEligibilityTypeByEligibility(this List<SaxUserEligibility> values, Sax.EligibilityType EligibilityType)
		{
			return values.Find(item => item.EligibilityType == EligibilityType);
		}

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

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