using HospitalContracts.BindingModels;
using HospitalContracts.ViewModels;
using HospitalDataModels.Models;
using System.ComponentModel.DataAnnotations;
using System.Xml.Linq;

namespace HospitalDatabaseImplement.Models
{
    public class Patient : IPatientModel
    {
        public int Id { get; private set; }
        
        public string Surname { get; private set; } = string.Empty;
        [Required]
        public string Name { get; private set; } = string.Empty;

        public string? Patronymic { get; private set; } = string.Empty;
        [Required]
        public DateTime BirthDate { get; private set; }

        public int? TreatmentId { get; private set; }
        public virtual Treatment? Treatment { get; set; }

        public static Patient? Create(PatientBindingModel model)
        {
            if (model == null)
            {
                return null;
            }
            return new Patient()
            {
                Id = model.Id,
                Surname = model.Surname,
                Name = model.Name,
                Patronymic = model.Patronymic,
                BirthDate = model.BirthDate,
                TreatmentId = model.TreatmentId
            };
        }

        public static Patient? Create(XElement element)
        {
            if (element == null)
            {
                return null;
            }
            return new Patient()
            {               
                Surname = element.Element("Surname")!.Value,
                Name = element.Element("Name")!.Value,
                Patronymic = element.Element("Patronymic")?.Value,
                BirthDate = DateTime.ParseExact(element.Element("BirthDate")!.Value, "dd.mm.yyyy", null),
                TreatmentId = Convert.ToInt32(element.Element("TreatmentId")?.Value)
            };
        }

        public void Update(PatientBindingModel model)
        {
            if (model == null)
            {
                return;
            }

            Surname = model.Surname;
            Name = model.Name;
            Patronymic = model.Patronymic;
            BirthDate = model.BirthDate;
            TreatmentId = model.TreatmentId;
        }
        public PatientViewModel GetViewModel => new()
        {
            Id = Id,
            Surname = Surname,
            Name = Name,
            Patronymic = Patronymic,
            BirthDate = BirthDate,
            TreatmentId = TreatmentId,
            TreatmentName = Treatment?.Name
        };
    }
}