using PrecastConcretePlantContracts.BindingModels;
using PrecastConcretePlantContracts.ViewModels;
using PrecastConcretePlantDatabaseImplement;
using PrecastConcretePlantDatabaseImplement.Models;
using PrecastConcretePlantDataModels.Models;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

public class Shop : IShopModel
{
    public int Id { get; set; }
    [Required]
    public string ShopName { get; set; } = string.Empty;
    [Required]
    public string Address { get; set; } = string.Empty;
    [Required]
    public DateTime DateOpening { get; set; }
    [Required]
    public int Capacity { get; set; }

    private Dictionary<int, (IReinforcedModel, int)>? _shopReinforceds = null;

    [NotMapped]
    public Dictionary<int, (IReinforcedModel, int)> ShopReinforceds
    {
        get
        {
            if (_shopReinforceds == null)
            {
                _shopReinforceds = Reinforceds.ToDictionary(rec => rec.ReinforcedId, rec => (rec.Reinforced as IReinforcedModel, rec.Count));
            }
            return _shopReinforceds;
        }
    }
    [ForeignKey("ShopId")]
    public virtual List<ShopReinforced> Reinforceds { get; set; } = new();
    public static Shop Create(PrecastConcretePlantDatabase context, ShopBindingModel model)
    {
        return new Shop()
        {
            Id = model.Id,
            ShopName = model.ShopName,
            Address = model.Address,
            DateOpening = model.DateOpening,
            Capacity = model.Capacity,
            Reinforceds = model.ShopReinforceds.Select(x => new ShopReinforced
            {
                Reinforced = context.Reinforceds.First(y => y.Id == x.Key),
                Count = x.Value.Item2
            }).ToList()
        };
    }

    public void Update(ShopBindingModel model)
    {
        ShopName = model.ShopName;
        Address = model.Address;
        DateOpening = model.DateOpening;
        Capacity = model.Capacity;
    }

    public ShopViewModel GetViewModel => new()
    {
        Id = Id,
        ShopName = ShopName,
        Address = Address,
        DateOpening = DateOpening,
        Capacity = Capacity,
        ShopReinforceds = ShopReinforceds
    };

    public void UpdateTravels(PrecastConcretePlantDatabase context, ShopBindingModel model)
    {
        var shopReinforceds = context.ShopReinforceds.Where(rec => rec.ShopId == model.Id).ToList();
        if (shopReinforceds != null && shopReinforceds.Count > 0)
        {   // удалили те, которых нет в модели
            context.ShopReinforceds.RemoveRange(shopReinforceds.Where(rec => !model.ShopReinforceds.ContainsKey(rec.ReinforcedId)));
            context.SaveChanges();
            // обновили количество у существующих записей
            foreach (var updateTravel in shopReinforceds)
            {
                updateTravel.Count = model.ShopReinforceds[updateTravel.ReinforcedId].Item2;
                model.ShopReinforceds.Remove(updateTravel.ReinforcedId);
            }
            context.SaveChanges();
        }
        var shop = context.Shops.First(x => x.Id == Id);
        foreach (var st in model.ShopReinforceds)
        {
            context.ShopReinforceds.Add(new ShopReinforced
            {
                Shop = shop,
                Reinforced = context.Reinforceds.First(x => x.Id == st.Key),
                Count = st.Value.Item2
            });
            context.SaveChanges();
        }
        _shopReinforceds = null;
    }
}