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 SbmAddress : SbmHierarchyItem
	{
		//-------------------------------------------------------------------
		// Columns.
		public enum Column
		{
			Hidden,
			Pos,
			Id,
			// Address.
			Type_Desc,
			RefExt,
			Name,
			DescBrief,
			Summary,
			Line1,
			Line2,
			Line3,
			City,
			Province,
			Postcode,
			Country,
			Contact,
			Phone,
			Fax,
			Email,
			LastVisitOn,
			NextVisitOn,
			IsPrimary,
			// Common properties.
			Notes,
			Flag,
			Status,
			Status_Ind,
			Status_Desc,
			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.AddressType AddressType { get; set; } = Sbm.AddressType.Any;
			public SysId AddressIdRef { get; set; } = new SysId();
			public String RefExt { get; set; } = "";
			public String Name { get; set; } = "";
			public String DescBrief { get; set; } = "";
			public String Line1 { get; set; } = "";
			public String Line2 { get; set; } = "";
			public String Line3 { get; set; } = "";
			public String City { get; set; } = "";
			public String Province { get; set; } = "";
			public String Postcode { get; set; } = "";
			public String Country { get; set; } = "";
			public SysId RegionIdCity { get; set; } = new SysId();
			public SysId RegionIdProvince { get; set; } = new SysId();
			public SysId RegionIdCountry { get; set; } = new SysId();
			public String Contact { get; set; } = "";
			public String Phone { get; set; } = "";
			public String Fax { get; set; } = "";
			public String Email { get; set; } = "";
			public String AccountManagerCode { get; set; } = "";
			public String AccountHandlerCode { get; set; } = "";
			public String ContactAreaCode { get; set; } = "";
			public String ContactHandlerCode { get; set; } = "";
			public String DeliveryTypeCode { get; set; } = "";
			public String DeliveryMethodCode { get; set; } = "";
			public String DeliveryBookInCode { get; set; } = "";
			public DateTime LastVisitOn { get; set; } = DateTime.MinValue;
			public DateTime NextVisitOn { get; set; } = DateTime.MinValue;

			// Flags.
			public bool IsPrimary { get; set; }
			public bool IncludeName { 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 { 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 SysId AddressIdRef
			{
				get { return data.AddressIdRef; }
				set { CheckChanged(data.AddressIdRef, value); data.AddressIdRef = value; }
			}
			public String RefExt
			{
				get { return data.RefExt; }
				set { CheckChanged(data.RefExt, value); data.RefExt = value; }
			}
			public Sbm.AddressType AddressType
			{
				get { return data.AddressType; }
				set { CheckChanged((int)data.AddressType, (int)value); data.AddressType = value; }
			}
			public String Name
			{
				get { return data.Name; }
				set { CheckChanged(data.Name, value); data.Name = value; }
			}
			public String DescBrief
			{
				get { return data.DescBrief; }
				set { CheckChanged(data.DescBrief, value); data.DescBrief = value; }
			}
			public String Line1
			{
				get { return data.Line1; }
				set { CheckChanged(data.Line1, value); data.Line1 = value; }
			}
			public String Line2
			{
				get { return data.Line2; }
				set { CheckChanged(data.Line2, value); data.Line2 = value; }
			}
			public String Line3
			{
				get { return data.Line3; }
				set { CheckChanged(data.Line3, value); data.Line3 = value; }
			}
			public String City
			{
				get { return data.City; }
				set { CheckChanged(data.City, value); data.City = value; }
			}
			public String Province
			{
				get { return data.Province; }
				set { CheckChanged(data.Province, value); data.Province = value; }
			}
			public String Postcode
			{
				get { return data.Postcode; }
				set { CheckChanged(data.Postcode, value); data.Postcode = value; }
			}
			public String Country
			{
				get { return data.Country; }
				set { CheckChanged(data.Country, value); data.Country = value; }
			}
			public SysId RegionIdCity
			{
				get { return data.RegionIdCity; }
				set { CheckChanged(data.RegionIdCity, value); data.RegionIdCity = value; }
			}
			public SysId RegionIdProvince
			{
				get { return data.RegionIdProvince; }
				set { CheckChanged(data.RegionIdProvince, value); data.RegionIdProvince = value; }
			}
			public SysId RegionIdCountry
			{
				get { return data.RegionIdCountry; }
				set { CheckChanged(data.RegionIdCountry, value); data.RegionIdCountry = value; }
			}
			public String Contact
			{
				get { return data.Contact; }
				set { CheckChanged(data.Contact, value); data.Contact = value; }
			}
			public String Phone
			{
				get { return data.Phone; }
				set { CheckChanged(data.Phone, value); data.Phone = value; }
			}
			public String Fax
			{
				get { return data.Fax; }
				set { CheckChanged(data.Fax, value); data.Fax = value; }
			}
			public String Email
			{
				get { return data.Email; }
				set { CheckChanged(data.Email, value); data.Email = value; }
			}
			public String AccountManagerCode
			{
				get { return data.AccountManagerCode; }
				set { CheckChanged(data.AccountManagerCode, value); data.AccountManagerCode = value; }
			}
			public String AccountHandlerCode
			{
				get { return data.AccountHandlerCode; }
				set { CheckChanged(data.AccountHandlerCode, value); data.AccountHandlerCode = value; }
			}
			public String ContactAreaCode
			{
				get { return data.ContactAreaCode; }
				set { CheckChanged(data.ContactAreaCode, value); data.ContactAreaCode = value; }
			}
			public String ContactHandlerCode
			{
				get { return data.ContactHandlerCode; }
				set { CheckChanged(data.ContactHandlerCode, value); data.ContactHandlerCode = value; }
			}
			public String DeliveryTypeCode
			{
				get { return data.DeliveryTypeCode; }
				set { CheckChanged(data.DeliveryTypeCode, value); data.DeliveryTypeCode = value; }
			}

			public String DeliveryMethodCode
			{
				get { return data.DeliveryMethodCode; }
				set { CheckChanged(data.DeliveryMethodCode, value); data.DeliveryMethodCode = value; }
			}
			public String DeliveryBookInCode
			{
				get { return data.DeliveryBookInCode; }
				set { CheckChanged(data.DeliveryBookInCode, value); data.DeliveryBookInCode = value; }
			}
			public DateTime LastVisitOn
			{
				get { return data.LastVisitOn; }
				set { CheckChanged(data.LastVisitOn, value); data.LastVisitOn = value; }
			}
			public DateTime NextVisitOn
			{
				get { return data.NextVisitOn; }
				set { CheckChanged(data.NextVisitOn, value); data.NextVisitOn = value; }
			}


			//-------------------------------------------------------------------
			// Flags.
			public bool IsPrimary
			{
				get { return GetFlag(Flag_Primary); }
				set { SetFlag(Flag_Primary, value); }
			}
			public bool IncludeName
			{
				get { return GetFlag(Flag_IncludeName); }
				set { SetFlag(Flag_IncludeName, value); }
			}

			internal void PopulateFrom(Data data)
			{
				ItemType = data.ItemType;
				ItemId = data.ItemId;
				AddressType = data.AddressType;
				AddressIdRef = data.AddressIdRef;
				RefExt = data.RefExt;
				Name = data.Name;
				DescBrief = data.DescBrief;
				Line1 = data.Line1;
				Line2 = data.Line2;
				Line3 = data.Line3;
				City = data.City;
				Province = data.Province;
				Postcode = data.Postcode;
				Country = data.Country;
				RegionIdCity = data.RegionIdCity;
				RegionIdProvince = data.RegionIdProvince;
				RegionIdCountry = data.RegionIdCountry;
				Contact = data.Contact;
				Phone = data.Phone;
				Fax = data.Fax;
				Email = data.Email;
				AccountManagerCode = data.AccountManagerCode;
				AccountHandlerCode = data.AccountHandlerCode;
				ContactAreaCode = data.ContactAreaCode;
				ContactHandlerCode = data.ContactHandlerCode;
				DeliveryMethodCode = data.DeliveryMethodCode;
				DeliveryTypeCode = data.DeliveryTypeCode;
				DeliveryBookInCode = data.DeliveryBookInCode;
				LastVisitOn = data.LastVisitOn;
				NextVisitOn = data.NextVisitOn;
				IsPrimary = data.IsPrimary;
				IncludeName = data.IncludeName;
				base.PopulateFrom(data);
			}
			public Data Clone()
			{
				Data data = new Data();
				data.PopulateFrom(this);
				return data;
			}
		}
		//-------------------------------------------------------------------
		// ErrField.
		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 AddressIdRef { get; set; } = ValidValue.Valid;
			public ValidValue RefExt { get; set; } = ValidValue.Valid;
			public ValidValue AddressType { get; set; } = ValidValue.Valid;
			public ValidValue Name { get; set; } = ValidValue.Valid;
			public ValidValue DescBrief { get; set; } = ValidValue.Valid;
			public ValidValue Line1 { get; set; } = ValidValue.Valid;
			public ValidValue Line2 { get; set; } = ValidValue.Valid;
			public ValidValue Line3 { get; set; } = ValidValue.Valid;
			public ValidValue City { get; set; } = ValidValue.Valid;
			public ValidValue Province { get; set; } = ValidValue.Valid;
			public ValidValue Postcode { get; set; } = ValidValue.Valid;
			public ValidValue Country { get; set; } = ValidValue.Valid;
			public ValidValue RegionIdCity { get; set; } = ValidValue.Valid;
			public ValidValue RegionIdProvince { get; set; } = ValidValue.Valid;
			public ValidValue RegionIdCountry { get; set; } = ValidValue.Valid;
			public ValidValue Contact { get; set; } = ValidValue.Valid;
			public ValidValue Phone { get; set; } = ValidValue.Valid;
			public ValidValue Fax { get; set; } = ValidValue.Valid;
			public ValidValue Email { get; set; } = ValidValue.Valid;
			public ValidValue AccountManagerCode { get; set; } = ValidValue.Valid;
			public ValidValue AccountHandlerCode { get; set; } = ValidValue.Valid;
			public ValidValue ContactAreaCode { get; set; } = ValidValue.Valid;
			public ValidValue ContactHandlerCode { get; set; } = ValidValue.Valid;
			public ValidValue DeliveryTypeCode { get; set; } = ValidValue.Valid;
			public ValidValue DeliveryMethodCode { get; set; } = ValidValue.Valid;
			public ValidValue DeliveryBookInCode { get; set; } = ValidValue.Valid;
			public ValidValue LastVisitOn { get; set; } = ValidValue.Valid;
			public ValidValue NextVisitOn { get; set; } = ValidValue.Valid;
			public ValidValue IsPrimary { get; set; } = ValidValue.Valid;
			public ValidValue InlcudeName { get; set; } = ValidValue.Valid;
		}

		//-------------------------------------------------------------------
		// Data members.
		private readonly Data data = new Data();
		public static readonly Byte Flag_Primary = 0x01;
		public static readonly Byte Flag_IncludeName = 0x02;

		//-------------------------------------------------------------------
		// Construction.
		protected SbmAddress(SysId id, Sbm.ItemType itemType, SysId itemId, Sbm.AddressType addressType) :
			base(id)
		{
			base.SetData(data);
			ItemType = itemType;
			ItemId = itemId;
			AddressType = addressType;
			Status = DefaultStatus;
		}

		//-------------------------------------------------------------------
		// Address status.
		private static readonly List<SaStatus> addressStatuses = new List<SaStatus>()
		{
			SaStatus.Current,
		};
		public static SaStatus DefaultStatus { get { return SaStatus.Current; } }
		public static List<SaStatus> AddressStatuses { get { return new List<SaStatus>(addressStatuses); } }
		public static DataValue.TriStateType GetStatusTriState(SaStatus status)
		{
			addressStatuses.Add(SaStatus.Current);

			switch (status)
			{
				case SaStatus.Current:
					return DataValue.TriStateType.Green;
			}
			return DataValue.TriStateType.Unknown;
		}

		//-------------------------------------------------------------------
		// Formatting.
		public enum AddressFmt
		{
			ScreenList,
			Clipboard,
		}
		public List<String> Format(AddressFmt addressFmt)
		{
			return Format(GetData(), addressFmt);
		}
		public static List<String> Format(SbmAddress address, AddressFmt addressFmt)
		{
			return Format(address.GetData(), addressFmt);
		}
		public static List<String> Format(SbmAddress.Data address, AddressFmt addressFmt)
		{
			List<String> addressLines = new List<String>();
			switch (addressFmt)
			{
				case AddressFmt.ScreenList:
				case AddressFmt.Clipboard:
					{
						if (addressFmt == AddressFmt.ScreenList || address.IncludeName && StringUtil.IsEmpty(address.Name)) addressLines.Add(address.Name);
						addressLines.Add(address.Line1);
						addressLines.Add(address.Line2);
						addressLines.Add(address.Line3);
						addressLines.Add(address.City);
						String provincePostcode = address.Province + " " + address.Postcode;
						provincePostcode.Trim();
						addressLines.Add(provincePostcode);
						addressLines.Add(address.Country);
						// Trim leading and trailing spaces from each line and trailing commas.
						for (int addressLineIdx = 0; addressLineIdx < addressLines.Count; addressLineIdx++)
						{
							String addressLine = addressLines[addressLineIdx];
							addressLine.Trim(new char[] { ',', ' ' });
						}
						break;
					}
			}
			addressLines.RemoveBlanks();
			return addressLines;
		}

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

		// Address display.
		public String GetDisplay()
		{
			return GetDisplay(Line1, Line2, Line3, City, Province, Postcode, Country);
		}
		public static String GetDisplay(String line1, String line2, String line3, String city, String province, String postcode, String country)
		{
			List<String> lines = new List<String>() { line1, line2, line3, city, province };
			return StringUtil.TrimWhitespace(lines.Concat(", ", null, null, true, true).ToString() + " " + postcode + " " + country);
		}

		// Address summary.
		public String GetSummary()
		{
			return GetSummary(Line1, City, Province, Postcode, Country);
		}
		public static String GetSummary(String line1, String city, String province, String postcode, String country)
		{
			List<String> lines = new List<String>() { line1, city, province };
			return StringUtil.TrimWhitespace(lines.Concat(", ", null, null, true, true).ToString() + " " + postcode + " " + country);
		}

		// Visit on.
		public bool IsVisitOn(DateTime visitDate)
		{
			if (DateUtil.IsValid(LastVisitOn) && LastVisitOn.CompareTo(visitDate) > 0) return false;
			if (DateUtil.IsValid(NextVisitOn) && NextVisitOn.CompareTo(visitDate) < 0) return false;
			return true;
		}

		//-------------------------------------------------------------------
		// Properties.
		public Data GetData() { return data.Clone(); }
		public void SetData(Data data)
		{
			// Properties that cannot be changed if previously specified.
			// Id.
			if (SysId.IsValid(Id) && SysId.ToInt(Id) != SysId.ToInt(data.Id))
				throw new NotSupportedException($"{SysUtil.Fn} Id cannot be changed");
			// Item type.
			if ((int)ItemType > 1 && ItemType != data.ItemType)
				throw new NotSupportedException($"{SysUtil.Fn} Item Type cannot be changed");
			// Item Id.
			if (SysId.IsValid(ItemId) && SysId.ToInt(ItemId) != SysId.ToInt(data.ItemId))
				throw new NotSupportedException($"{SysUtil.Fn} Item 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; }
			protected set { data.ItemType = value; }
		}
		public SysId ItemId
		{
			get { return data.ItemId; }
			protected set { data.ItemId = value; }
		}
		public SysId AddressIdRef
		{
			get { return data.AddressIdRef; }
			set { data.AddressIdRef = value; }
		}
		public String RefExt
		{
			get { return data.RefExt; }
			set { data.RefExt = value; }
		}
		public Sbm.AddressType AddressType
		{
			get { return data.AddressType; }
			set { data.AddressType = value; }
		}
		public String Name
		{
			get { return data.Name; }
			set { data.Name = value; }
		}
		public String DescBrief
		{
			get { return data.DescBrief; }
			set { data.DescBrief = value; }
		}
		public String Line1
		{
			get { return data.Line1; }
			set { data.Line1 = value; }
		}
		public String Line2
		{
			get { return data.Line2; }
			set { data.Line2 = value; }
		}
		public String Line3
		{
			get { return data.Line3; }
			set { data.Line3 = value; }
		}
		public String City
		{
			get { return data.City; }
			set { data.City = value; }
		}
		public String Province
		{
			get { return data.Province; }
			set { data.Province = value; }
		}
		public String Postcode
		{
			get { return data.Postcode; }
			set { data.Postcode = value; }
		}
		public String Country
		{
			get { return data.Country; }
			set { data.Country = value; }
		}
		public SysId RegionIdCity
		{
			get { return data.RegionIdCity; }
			set { data.RegionIdCity = value; }
		}
		public SysId RegionIdProvince
		{
			get { return data.RegionIdProvince; }
			set { data.RegionIdProvince = value; }
		}
		public SysId RegionIdCountry
		{
			get { return data.RegionIdCountry; }
			set { data.RegionIdCountry = value; }
		}
		public String Contact
		{
			get { return data.Contact; }
			set { data.Contact = value; }
		}
		public String Phone
		{
			get { return data.Phone; }
			set { data.Phone = value; }
		}
		public String Fax
		{
			get { return data.Fax; }
			set { data.Fax = value; }
		}
		public String Email
		{
			get { return data.Email; }
			set { data.Email = value; }
		}
		public String AccountManagerCode
		{
			get { return data.AccountManagerCode; }
			set { data.AccountManagerCode = value; }
		}
		public String AccountHandlerCode
		{
			get { return data.AccountHandlerCode; }
			set { data.AccountHandlerCode = value; }
		}
		public String ContactAreaCode
		{
			get { return data.ContactAreaCode; }
			set { data.ContactAreaCode = value; }
		}
		public String ContactHandlerCode
		{
			get { return data.ContactHandlerCode; }
			set { data.ContactHandlerCode = value; }
		}
		public String DeliveryTypeCode
		{
			get { return data.DeliveryTypeCode; }
			set { data.DeliveryTypeCode = value; }
		}

		public String DeliveryMethodCode
		{
			get { return data.DeliveryMethodCode; }
			set { data.DeliveryMethodCode = value; }
		}
		public String DeliveryBookInCode
		{
			get { return data.DeliveryBookInCode; }
			set { data.DeliveryBookInCode = value; }
		}
		public DateTime LastVisitOn
		{
			get { return data.LastVisitOn; }
			set { data.LastVisitOn = value; }
		}
		public DateTime NextVisitOn
		{
			get { return data.NextVisitOn; }
			set { data.NextVisitOn = value; }
		}

		//-------------------------------------------------------------------
		// Flags.
		public bool IsPrimary
		{
			get { return GetFlag(Flag_Primary); }
			set { SetFlag(Flag_Primary, value); }
		}
		public bool IncludeName
		{
			get { return GetFlag(Flag_IncludeName); }
			set { SetFlag(Flag_IncludeName, value); }
		}

		//-------------------------------------------------------------------
		//                         C o p y   F r o m
		//-------------------------------------------------------------------
		public void CopyFrom(SbmAddress address)
		{
			AddressIdRef = address.AddressIdRef;
			AddressType = address.AddressType;
			RefExt = address.RefExt;
			Name = address.Name;
			DescBrief = address.DescBrief;
			Line1 = address.Line1;
			Line2 = address.Line2;
			Line3 = address.Line3;
			City = address.City;
			Province = address.Province;
			Postcode = address.Postcode;
			Country = address.Country;
			RegionIdCity = address.RegionIdCity;
			RegionIdProvince = address.RegionIdProvince;
			RegionIdCountry = address.RegionIdCountry;
			Contact = address.Contact;
			Phone = address.Phone;
			Fax = address.Fax;
			Email = address.Email;
		}

		//-------------------------------------------------------------------
		//                            P a r a m s
		//-------------------------------------------------------------------
		/// <summary>Parameters - used to define the filters that should be applied to a List of Addresses</summary>
		// List parameters.
		public enum StatusCat
		{
			Any,
			NotDeleted,
			Deleted,
		}
		/// <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>();
			// Address.
			public Sbm.AddressType AddressType { get; set; }
			public ItemId ItemId { get; set; }
			public SysId AffiliateIdOwner { get; set; }
			public SysId AddressIdRef { get; set; }
			public String RefExt { get; set; }
			public String Name { get; set; }
			public String NamePartial { get; set; }
			public String Address { get; set; }
			public String AddressPartial { get; set; }
			public String Postcode { get; set; }
			public String PostcodePartial { get; set; }
			public String Phone { get; set; }
			public String PhonePartial { get; set; }
			public String AccountManagerCode { get; set; }
			public String AccountHandlerCode { get; set; }
			public String ContactAreaCode { get; set; }
			public String ContactHandlerCode { get; set; }
			public String DeliveryTypeCode { get; set; }
			public String DeliveryBookInCode { get; set; }
			public bool PrimaryOnly { get; set; }

			public StatusCat StatusCat { get; set; } = StatusCat.NotDeleted;
		}
		//-------------------------------------------------------------------
	}
	//=======================================================================
	//                     A d d r e s s   D a t a   L i s t
	//=======================================================================
	public static class SbmAddressList
	{
		/// <summary>Check whether item exists/locate in list with specified Id.</summary>
		public static bool FindPrimary(this List<SbmAddress> values, bool IsPrimary)
		{
			if (!IsPrimary) return false;
			return values.Any(item => item.IsPrimary.Equals(IsPrimary));
		}
		public static bool FindById(this List<SbmAddress> values, SysId addressId)
		{
			if (!SysId.IsValid(addressId)) return false;
			return values.Any(item => item.Id.Equals(addressId));
		}
		public static bool FindByType(this List<SbmAddress> values, String addressType)
		{
			if (StringUtil.IsEmpty(addressType)) return false;
			return values.Any(item => item.AddressType.ToString().EqualsCI(addressType));
		}
		public static bool FindByTypeRef(this List<SbmAddress> values, String refExt)
		{
			if (String.IsNullOrEmpty(refExt)) return false;
			return values.Any(item => item.RefExt.Equals(refExt));
		}
		public static bool FindByPostcode(this List<SbmAddress> values, String postcode)
		{
			if (String.IsNullOrEmpty(postcode)) return false;
			return values.Any(item => item.Postcode.Equals(postcode));
		}
		public static bool FindByTypeVisitOn(this List<SbmAddress> values, String type, DateTime visitOn)
		{
			if (StringUtil.IsEmpty(type)) return false;
			if (!DateUtil.IsValid(visitOn)) return false;
			return values.Any(item => item.AddressType.Equals(type) && item.IsVisitOn(visitOn));
		}
		public static bool HasType(this List<SbmAddress> values, Sbm.AddressType addressType, SbmAddress addressIgnore)
		{
			return values.Any(address => address.AddressType == addressType && address != addressIgnore);
		}
		public static bool HasType(this List<SbmAddress> values, Sbm.AddressType addressType, SysId addressIdIgnore)
		{
			return values.Any(address => address.AddressType == addressType && !SysId.IsValid(addressIdIgnore) || address.Id != addressIdIgnore);
		}
		public static int OccurrencesOf(this List<SbmAddress> values, Sbm.AddressType addressType)
		{
			// How many addresses of the specified type are in the list?
			return values.Count(address => address.AddressType == addressType);
		}
		public static int OccurrencesOfType(this List<SbmAddress> values)
		{
			// Which occurrence of addresses of the same type is the specified position in the list?
			int iOccur = 1;
			// Move to this item in the list
			for (int i = 1; i < values.Count; i++)
				foreach (SbmAddress address in values)
				{
					Sbm.AddressType addressType = Sbm.AddressType.Any;
					if (address.AddressType == addressType) iOccur++;
				}
			return iOccur;

			/*
			// Which occurrence of addresses of the same type is the specified position in the list?
			int iOccur = 1;
			// Move to this item in the list:
			if (iPos > -1) Goto(iPos);
			iPos = Pos();
			if (InLst() && Index())
			{
				// Make a note of the type of the specified address:
				eSapAddressType eType = Index()->GetType();
				GotoStart();
				while (Next() && Pos() != iPos)
					if (Index() && Index()->GetType() == eType) iOccur++;
				Goto(iPos);
			}
			return iOccur;*/
		}
	}
	//=======================================================================
}