SUBD_Aleikin/Restaurant/RestaurantDatabaseImplement/Models/Component.cs

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using RestaurantContracts.BindingModels;
using RestaurantContracts.ViewModels;
using RestaurantDataModels.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 RestaurantDatabaseImplement.Models
{
public class Component : IComponentModel
{
[Required]
public string Name { get; private set; } = string.Empty;
[Required]
public int Price { get; private set; }
[Required]
public int Count { get; private set; }
private List<(IProviderModel, int, DateTime)>? _componentProviders = null;
[NotMapped]
public List<(IProviderModel, int, DateTime)> ComponentProviders
{
get
{
if (_componentProviders == null)
{
_componentProviders = Providers.Select(recPC => (recPC.Provider as IProviderModel, recPC.Count, recPC.Date)).ToList();
}
return _componentProviders;
}
}
[ForeignKey("ComponentId")]
public virtual List<ComponentProvider> Providers { get; set; } = new();
public int Id { get; private set; }
[ForeignKey("ComponentId")]
public virtual List<ProductComponent> ProductComponents { get; set; } = new();
public static Component? Create(RestaurantDatabase context, ComponentBindingModel? model)
{
if (model == null)
{
return null;
}
return new Component()
{
Id = model.Id,
Name = model.Name,
Price = model.Price,
Count = model.Count,
Providers = model.ComponentProviders.Select(x => new ComponentProvider
{
Provider = context.Providers.First(y => y.ComponentProviders == x.Item1),
Count = x.Item2,
Date = x.Item3
}).ToList()
};
}
public void Update(ComponentBindingModel? model)
{
Name = model.Name;
Price = model.Price;
Count = model.Count;
}
public ComponentViewModel GetViewModel => new()
{
Id = Id,
Name = Name,
Price = Price,
Count = Count,
ComponentProviders = ComponentProviders,
};
public void UpdateComponents(RestaurantDatabase context, ComponentBindingModel model)
{
var ComponentProviders = context.ComponentProviders.Where(rec => rec.ComponentId == model.Id).ToList();
if (ComponentProviders != null && ComponentProviders.Count > 0)
{ // удалили те, которых нет в модели
context.ComponentProviders.RemoveRange(ComponentProviders.Where(rec => !model.ComponentProviders.Select(x => x.Item1.Id).Contains(rec.ProviderId)));
context.SaveChanges();
// обновили количество у существующих записей
foreach (var updateComponent in ComponentProviders)
{
updateComponent.Count = model.ComponentProviders.Find(x => x.Item1.Id == updateComponent.ProviderId).Item2;
model.ComponentProviders.Remove(model.ComponentProviders.Find(x => x.Item1.Id == updateComponent.ProviderId));
}
context.SaveChanges();
}
var Component = context.Components.First(x => x.Id == Id);
foreach (var pc in model.ComponentProviders)
{
context.ComponentProviders.Add(new ComponentProvider
{
Component = Component,
Provider = context.Providers.First(x => x.ComponentProviders == pc.Item1),
Count = pc.Item2,
Date = pc.Item3 // ??????
});
context.SaveChanges();
}
_componentProviders = null;
}
}
}