using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Sarand.Core.Base;
using Sarand.Core.Bus;
using Sarand.PatientMgr.Core.App;

namespace Sarand.PatientMgr.Core.Bus
{
	//=======================================================================
	public abstract class SpmPatient : SacsHierarchyItem
	{
		//-------------------------------------------------------------------
		// Columns.
		public enum Column
		{
			Pos,
			Id,
			InstitutionId,
			PatientNo,
			NhsNumber,
			Title,
			Forename,
			Surname,
			BirthOn,
			Age,
			AgeOn,

			// Common properties.
			Notes,
			Flags,
			Status,
			Status_Ind,
			Status_Desc,
			CreateOn_Date,
			UpdateOn_Date,
		}

		//-------------------------------------------------------------------
		/// <summary>Properties other than common.</summary>
		public class DataProperties
		{
			public SysId InstitutionId { get; set; } = new SysId();
			public String PatientNo { get; set; } = "";
			public String NhsNumber { get; set; } = "";
			public String Title { get; set; } = "";
			public String Forename { get; set; } = "";
			public String Surname { get; set; } = "";
			public Spm.Gender Gender { get; set; } = Spm.Gender.Unknown;
			public DateTime BirthOn { get; set; } = DateTime.MinValue;
			public String Age { get; set; } = "";
			public DateTime AgeOn { get; set; } = DateTime.MinValue;
		}

		// Data.
		public new class Data : SacsHierarchyItem.Data
		{
			// Data members.
			private readonly DataProperties data = new DataProperties();
			// Construction.
			public Data ()
			{
				//Status = PatientStatus;
			}
			public SysId InstitutionId
			{
				get { return data.InstitutionId; }
				set { CheckChanged(data.InstitutionId, value); data.InstitutionId = value; }
			}
			public String PatientNo
			{
				get { return data.PatientNo; }
				set { CheckChanged(data.PatientNo, value); data.PatientNo = value; }
			}
			public String NhsNumber
			{
				get { return data.NhsNumber; }
				set { CheckChanged(data.NhsNumber, value); data.NhsNumber = value; }
			}
			public String Title
			{
				get { return data.Title; }
				set { CheckChanged(data.Title, value); data.Title = value; }
			}
			public String Forename
			{
				get { return data.Forename; }
				set { CheckChanged(data.Forename, value); data.Forename = value; }
			}
			public String Surname
			{
				get { return data.Surname; }
				set { CheckChanged(data.Surname, value); data.Surname = value; }
			}
			public static String GetDisplayName (String surname, String forename, bool upperSurname = true)
			{
				String name = surname;
				if (upperSurname)
					name.ToUpper();
				if (!StringUtil.IsEmpty(surname) && !StringUtil.IsEmpty(forename))
					name += ", ";
				name += forename;
				return name;
			}
			public String GetDisplayName (bool upperSurname = true)
			{
				return GetDisplayName(Surname, Forename, upperSurname);
			}
			public Spm.Gender Gender
			{
				get { return data.Gender; }
				set { CheckChanged((int)data.Gender, (int)value); data.Gender = value; }
			}
			public DateTime BirthOn
			{
				get { return data.BirthOn; }
				set { CheckChanged(data.BirthOn, value); data.BirthOn = value; }
			}
			public String Age
			{
				get { return data.Age; }
				set { CheckChanged(data.Age, value); data.Age = value; }
			}
			public DateTime AgeOn
			{
				get { return data.AgeOn; }
				set { CheckChanged(data.AgeOn, value); data.AgeOn = value; }
			}

			internal void PopulateFrom(Data data)
			{
				InstitutionId = data.InstitutionId;
				PatientNo = data.PatientNo;
				NhsNumber = data.NhsNumber;
				Title = data.Title;
				Forename = data.Forename;
				Surname = data.Surname;
				Gender = data.Gender;
				BirthOn = data.BirthOn;
				Age = data.Age;
				AgeOn = data.AgeOn;
				base.PopulateFrom(data);
			}
			public Data Clone()
			{
				Data data = new Data();
				data.PopulateFrom(this);
				return data;
			}
		}

		// ErrField.
		public new class ErrField : SacsHierarchyItem.ErrField
		{
			public ValidValue InstitutionId { get; set; } = ValidValue.Valid;
			public ValidValue PatientNo { get; set; } = ValidValue.Valid;
			public ValidValue NhsNumber { get; set; } = ValidValue.Valid;
			public ValidValue Title { get; set; } = ValidValue.Valid;
			public ValidValue Forename { get; set; } = ValidValue.Valid;
			public ValidValue Surname { get; set; } = ValidValue.Valid;
			public ValidValue Gender { get; set; } = ValidValue.Valid;
			public ValidValue BirthOn { get; set; } = ValidValue.Valid;
			public ValidValue Age { get; set; } = ValidValue.Valid;
			public ValidValue AgeOn { get; set; } = ValidValue.Valid;
		}

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

		//-------------------------------------------------------------------
		// Construction.
		protected SpmPatient(SysId id, SysId institutionId) : base(id)
		{
			institutionId = InstitutionId;
			Status = DefaultStatus;
			base.SetData(data);
		}

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

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

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

		//-------------------------------------------------------------------
		// Properties.
		public Data GetData() { return data.Clone(); }
		public void SetData(Data data)
		{
			String fn = GetType().Name + ".SetData";
			// Properties that cannot be changed if previously specified.
			if (SysId.IsValid(Id) && SysId.ToInt(Id) != SysId.ToInt(data.Id))
				throw new NotSupportedException(fn + " Id cannot be changed");
			this.data.PopulateFrom(data);
		}

		//-------------------------------------------------------------------
		// Attributes.
		public SysId InstitutionId
		{
			get { return data.InstitutionId; }
			set { data.InstitutionId = value; }
		}
		public String PatientNo
		{
			get { return data.PatientNo; }
			set { data.PatientNo = value; }
		}
		public String NhsNumber
		{
			get { return data.NhsNumber; }
			set { data.NhsNumber = value; }
		}
		public String Title
		{
			get { return data.Title; }
			set { data.Title = value; }
		}
		public String Forename
		{
			get { return data.Forename; }
			set { data.Forename = value; }
		}
		public String Surname
		{
			get { return data.Surname; }
			set { data.Surname = value; }
		}
		public static String GetDisplayName(String surname, String forename, bool upperSurname = true)
		{
			String name = surname;
			if (upperSurname)
				name.ToUpper();
			if (!StringUtil.IsEmpty(surname) && !StringUtil.IsEmpty(forename))
				name += ", ";
			name += forename;
			return name;
		}
		public String GetDisplayName(bool upperSurname = true)
		{
			return GetDisplayName(Surname, Forename, upperSurname);
		}
		public Spm.Gender Gender
		{
			get { return data.Gender; }
			set { data.Gender = value; }
		}
		public DateTime BirthOn
		{
			get { return data.BirthOn; }
			set { data.BirthOn = value; }
		}
		public String Age
		{
			get { return data.Age; }
			set { data.Age = value; }
		}
		public DateTime AgeOn
		{
			get { return data.AgeOn; }
			set { data.AgeOn = value; }
		}

		//-------------------------------------------------------------------
		// Flags.

		//-------------------------------------------------------------------
		//          A s s o c i a t e d   D a t a   E l e m e n t s
		//-------------------------------------------------------------------
		public abstract bool HasAdmission();

		//-------------------------------------------------------------------
		//                            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,
		}
		/// <summary> Item list parameters. </summary>
		public new class Params : SacsHierarchyItem.Params
		{
			// List filtering.
			public List<SysId> IncludedIds { get; } = new List<SysId>();
			public List<SysId> ExcludedIds { get; } = new List<SysId>();

			// Patient.
			public SysId InstitutionId { get; set; }
			public String PatientNo { get; set; }
			public String Surname { get; set; }

			public StatusCat StatusCat { get; set; } = StatusCat.Any;
		}
		//-------------------------------------------------------------------
	}
	//=======================================================================
	//                 Patient   D a t a   L i s t
	//=======================================================================
	public static class SpmPatientList
	{
	}

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