102 lines
3.6 KiB
C#
102 lines
3.6 KiB
C#
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using AutomobilePlantContracts.BindingModels;
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using AutomobilePlantContracts.ViewModels;
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using AutomobilePlantDataModels.Models;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations.Schema;
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using System.ComponentModel.DataAnnotations;
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using System.Linq;
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using System.Reflection.Metadata;
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using System.Text;
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using System.Threading.Tasks;
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namespace AutomobilePlantDatabaseImplement.Models
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{
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public class Car : ICarModel
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{
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public int Id { get; private set; }
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[Required]
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public string CarName { get; private set; } = string.Empty;
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[Required]
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public double Price { get; private set; }
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private Dictionary<int, (IComponentModel, int)>? _carComponents = null;
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[NotMapped]
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public Dictionary<int, (IComponentModel, int)> CarComponents
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{
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get
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{
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if (_carComponents == null)
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{
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_carComponents = Components.ToDictionary(recPC => recPC.ComponentId, recPC => (recPC.Component as IComponentModel, recPC.Count));
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}
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return _carComponents;
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}
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}
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[ForeignKey("CarId")]
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public virtual List<CarComponent> Components { get; set; } = new();
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[ForeignKey("CarId")]
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public virtual List<Order> Orders { get; set; } = new();
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public static Car? Create(AutomobilePlantDatabase context, CarBindingModel model)
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{
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var components = context.Components;
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return new Car()
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{
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Id = model.Id,
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CarName = model.CarName,
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Price = model.Price,
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Components = model.CarComponents.Select(x => new CarComponent
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{
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Component = context.Components.First(y => y.Id == x.Key),
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Count = x.Value.Item2
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}).ToList()
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};
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}
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public void Update(CarBindingModel model)
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{
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CarName = model.CarName;
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Price = model.Price;
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}
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public CarViewModel GetViewModel => new()
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{
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Id = Id,
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CarName = CarName,
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Price = Price,
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CarComponents = CarComponents
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};
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public void UpdateComponents(AutomobilePlantDatabase context, CarBindingModel model)
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{
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var carComponents = context.CarComponents.Where(rec => rec.CarId == model.Id).ToList();
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if (carComponents != null && carComponents.Count > 0)
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{ // удалили те, которых нет в модели
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context.CarComponents.RemoveRange(carComponents.Where(rec => !model.CarComponents.ContainsKey(rec.ComponentId)));
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context.SaveChanges();
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// обновили количество у существующих записей
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foreach (var updateComponent in carComponents)
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{
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updateComponent.Count = model.CarComponents[updateComponent.ComponentId].Item2;
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model.CarComponents.Remove(updateComponent.ComponentId);
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}
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context.SaveChanges();
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}
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var car = context.Cars.First(x => x.Id == Id);
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foreach (var pc in model.CarComponents)
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{
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context.CarComponents.Add(new CarComponent
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{
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Car = car,
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Component = context.Components.First(x => x.Id == pc.Key),
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Count = pc.Value.Item2
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});
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context.SaveChanges();
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}
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_carComponents = null;
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}
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}
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}
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