PIbd-22_Kashin_M.I_PrecastConcretePlant/PrecastConcretePlant/PrecastConcretePlantDatabaseImplement/Models/Shop.cs

using PrecastConcretePlantContracts.BindingModels;
using PrecastConcretePlantContracts.ViewModels;
using PrecastConcretePlantDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PrecastConcretePlantDatabaseImplement.Models
{
    public class Shop : IShopModel
    {
        [Required]
        public string Name { get; private set; } = string.Empty;

        [Required]
        public string Address { get; private set; } = string.Empty;

        [Required]
        public int ReinforcedMaxCount { get; private set; }

        public DateTime DateOpening { get; private set; }

        private Dictionary<int, (IReinforcedModel, int)>? _cachedReinforcedies = null;
        [NotMapped]
        public Dictionary<int, (IReinforcedModel, int)> Reinforcedies
        {
            get
            {
                if (_cachedReinforcedies == null)
                {
                    using var context = new PrecastConcretePlantDataBase();
                    _cachedReinforcedies = ShopReinforcedies
                        .ToDictionary(x => x.ReinforcedId, x => (context.Reinforcedies
                        .FirstOrDefault(y => y.Id == x.ReinforcedId)! as IReinforcedModel, x.Count));
                }
                return _cachedReinforcedies;
            }
        }

        public int Id { get; private set; }

        [ForeignKey("ShopId")]
        public virtual List<ShopReinforced> ShopReinforcedies { get; set; } = new();

        public static Shop? Create(PrecastConcretePlantDataBase context, ShopBindingModel? model)
        {
            if (model == null)
            {
                return null;
            }
            return new Shop()
            {
                Id = model.Id,
                Name = model.Name,
                Address = model.Address,
                DateOpening = model.DateOpening,
                ReinforcedMaxCount = model.ReinforcedMaxCount,
                ShopReinforcedies = model.Reinforcedies.Select(x => new ShopReinforced
                {
                    Reinforced = context.Reinforcedies.FirstOrDefault(y => y.Id == x.Key)!,
                    Count = x.Value.Item2,
                }).ToList()
            };
        }
        public void Update(ShopBindingModel? model)
        {
            if (model == null)
            {
                return;
            }
            Name = model.Name;
            Address = model.Address;
            DateOpening = model.DateOpening;
        }
        public ShopViewModel GetViewModel => new()
        {
            Id = Id,
            Name = Name,
            Address = Address,
            Reinforcedies = Reinforcedies,
            DateOpening = DateOpening,
            ReinforcedMaxCount = ReinforcedMaxCount,
        };

        public void UpdateReinforcedies(PrecastConcretePlantDataBase context, ShopBindingModel model)
        {
            var shopReinforcedies = context.ShopReinforcedies
                .Where(rec => rec.ShopId == model.Id)
                .ToList();

            if (shopReinforcedies != null && shopReinforcedies.Count > 0)
            {
                context.ShopReinforcedies
                    .RemoveRange(shopReinforcedies
                    .Where(rec => !model.Reinforcedies
                                        .ContainsKey(rec.ReinforcedId)));

                foreach (var updateReinforced in shopReinforcedies.Where(x => model.Reinforcedies.ContainsKey(x.ReinforcedId)))
                {
                    updateReinforced.Count = model.Reinforcedies[updateReinforced.ReinforcedId].Item2;
                    model.Reinforcedies.Remove(updateReinforced.ReinforcedId);
                }
            }
            var shop = context.Shops.First(x => x.Id == model.Id);
            shop.ShopReinforcedies.AddRange(model.Reinforcedies.Select(x => new ShopReinforced
            {
                Reinforced = context.Reinforcedies.First(y => y.Id == x.Key),
                Count = x.Value.Item2,
            }).Except(shopReinforcedies ?? new()));
            context.SaveChanges();
            _cachedReinforcedies = null;
        }
    }
}