94 lines
3.7 KiB
C#
94 lines
3.7 KiB
C#
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using ComputersShopDataModels.Models;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using System.ComponentModel.DataAnnotations.Schema;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using ComputersShopContracts.BindingModels;
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using ComputersShopContracts.ViewModels;
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namespace ComputersShopDatabaseImplements.Models
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{
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public class Computer: IComputerModel
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{
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public int Id { get; set; }
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[Required]
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public string ComputerName { get; set; } = string.Empty;
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[Required]
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public double Price { get; set; }
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private Dictionary<int, (IComponentModel, int)>? _computerComponents = null;
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[NotMapped]
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public Dictionary<int, (IComponentModel, int)> ComputerComponents
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{
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get
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{
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if (_computerComponents == null)
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{
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_computerComponents = Components.ToDictionary(recPC => recPC.ComponentId, recPC =>
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(recPC.Component as IComponentModel, recPC.Count));
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}
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return _computerComponents;
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}
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}
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[ForeignKey("ComputerId")]
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public virtual List<ComputerComponent> Components { get; set; } = new();
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[ForeignKey("ComputerId")]
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public virtual List<Order> Orders { get; set; } = new();
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public static Computer Create(ComputersShopDatabase context, ComputerBindingModel model)
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{
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return new Computer()
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{
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Id = model.Id,
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ComputerName = model.ComputerName,
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Price = model.Price,
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Components = model.ComputerComponents.Select(x => new ComputerComponent
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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(ComputerBindingModel model)
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{
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ComputerName = model.ComputerName;
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Price = model.Price;
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}
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public ComputerViewModel GetViewModel => new()
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{
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Id = Id,
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ComputerName = ComputerName,
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Price = Price,
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ComputerComponents = ComputerComponents
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};
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public void UpdateComponents(ComputersShopDatabase context, ComputerBindingModel model)
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{
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var computerComponents = context.ComputerComponents.Where(rec => rec.ComputerId == model.Id).ToList();
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if (computerComponents != null && computerComponents.Count > 0)
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{ // удалили те, которых нет в модели
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context.ComputerComponents.RemoveRange(computerComponents.Where(rec => !model.ComputerComponents.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 computerComponents)
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{
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updateComponent.Count = model.ComputerComponents[updateComponent.ComponentId].Item2;
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model.ComputerComponents.Remove(updateComponent.ComponentId);
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}
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context.SaveChanges();
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}
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var computer = context.Computers.First(x => x.Id == Id);
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foreach (var pc in model.ComputerComponents)
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{
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context.ComputerComponents.Add(new ComputerComponent
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{
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Computer = computer,
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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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_computerComponents = null;
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}
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}
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}
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