using HospitalContracts.BindingModels;
using HospitalContracts.ViewModels;
using HospitalDataModels.Models;
using Microsoft.EntityFrameworkCore.Query.Internal;
using Microsoft.Identity.Client;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Dynamic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HospitalDataBaseImplements.Models
{
    public class Recipes : IRecipesModel
    {
        public int Id { get; private set; }
        [Required]
        public string Dose { get; private set; } = string.Empty;
        [Required]
        public DateTime Date { get; private set; } = DateTime.Now;
        [Required]
        public int ClientId { get; set; }
        [Required]
        public string ModeOfApplication { get; private set; } = string.Empty;
        [Required]
        public int SymptomsId { get; private set; }

        private Dictionary<int, IProceduresModel>? _recipeProcedures = null;
        [NotMapped]
        public Dictionary<int, IProceduresModel> RecipeProcedures
        {
            get
            {
                if (_recipeProcedures == null)
                {
                    _recipeProcedures = Procedures.ToDictionary(recPC => recPC.ProcedureId, recPC =>
                    recPC.Procedure as IProceduresModel);
                }
                return _recipeProcedures;
            }
        }
        [ForeignKey("RecipesId")]
        public virtual List<RecipesProcedures> Procedures { get; set; } = new();
        public Client Client { get; set; }
        public Symptoms Symptoms { get; set; }
        public static Recipes? Create(RecipesBindingModel model)
        {
            if (model == null)
            {
                return null;
            }
            return new Recipes()
            {
                Id = model.Id,
                SymptomsId = model.SymptomsId,
                Dose = model.Dose,
                ClientId = model.ClientId,
                ModeOfApplication = model.ModeOfApplication
            };
        }
        public static Recipes Create(RecipesViewModel model)
        {
            return new Recipes()
            { 
                    Id = model.Id,
                    SymptomsId = model.SymptomsId,
                    Dose = model.Dose,
                    ClientId = model.ClientId,
                    ModeOfApplication = model.ModeOfApplication
                };
        }
        public void Update(RecipesBindingModel model)
        {
            Date = model.Date;
            Dose = model.Dose;
            ModeOfApplication = model.ModeOfApplication;
        }
        public RecipesViewModel GetViewModel => new()
        {
            Id = Id,
            Date = Date,
            ClientId = ClientId,
            ModeOfApplication = ModeOfApplication,
            Dose = Dose,
            SymptomsId = SymptomsId
        };
        public void UpdateProcedures(HospitalDatabase context, RecipesBindingModel model)
        {
            var recipeProcedures = context.RecipesProcedures.Where(rec => rec.RecipesId == model.Id).ToList();
            if (recipeProcedures != null && recipeProcedures.Count > 0)
            { // удалили те, которых нет в модели
                context.RecipesProcedures.RemoveRange(recipeProcedures.Where(rec
               => !model.RecipeProcedures.ContainsKey(rec.ProcedureId)));
                context.SaveChanges();
            }
            var recipe = context.Recipes.First(x => x.Id == Id);
            foreach (var pc in model.RecipeProcedures)
            {
                context.RecipesProcedures.Add(new RecipesProcedures
                {
                    Recipe = recipe,
                    Procedure = context.Procedures.First(x => x.Id == pc.Key)
                });
                context.SaveChanges();
            }
            _recipeProcedures = null;
        }
    }
}