101 lines
3.8 KiB
C#
101 lines
3.8 KiB
C#
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using ComputerShopDataModels.Models;
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using System;
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using System.Collections;
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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.Text;
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using System.Threading.Tasks;
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using ComputerShopContracts.BindingModels;
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using ComputerShopContracts.ViewModels;
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namespace ComputerShopDatabaseImplement.Models
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{
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internal class Assembly : IAssemblyModel
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{
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public int Id { get; set; }
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[Required]
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public string AssemblyName { 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)>? _assemblyComponents =
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null;
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[NotMapped]
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public Dictionary<int, (IComponentModel, int)> AssemblyComponents
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{
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get
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{
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if (_assemblyComponents == null)
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{
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_assemblyComponents = Components
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.ToDictionary(recPC => recPC.ComponentId, recPC =>
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(recPC.Component as IComponentModel, recPC.Count));
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}
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return _assemblyComponents;
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}
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}
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[ForeignKey("AssemblyId")]
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public virtual List<AssemblyComponent> Components { get; set; } = new();
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[ForeignKey("AssemblyId")]
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public virtual List<Purchase> Purchases { get; set; } = new();
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public static Assembly Create(ComputerShopDatabase context, AssemblyBindingModel model)
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{
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return new Assembly()
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{
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Id = model.Id,
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AssemblyName = model.AssemblyName,
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Price = model.Price,
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Components = model.AssemblyComponents.Select(x => new
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AssemblyComponent
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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(AssemblyBindingModel model)
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{
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AssemblyName = model.AssemblyName;
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Price = model.Price;
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}
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public AssemblyViewModel GetViewModel => new()
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{
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Id = Id,
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AssemblyName = AssemblyName,
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Price = Price,
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AssemblyComponents = AssemblyComponents
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};
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public void UpdateComponents(ComputerShopDatabase context, AssemblyBindingModel model)
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{
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var assemblyComponents = context.AssemblyComponents.Where(rec =>
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rec.Id == model.Id).ToList();
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if (assemblyComponents != null && assemblyComponents.Count > 0)
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{ // удалили те, которых нет в модели
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context.AssemblyComponents.RemoveRange(assemblyComponents.Where(rec
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=> !model.AssemblyComponents.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 assemblyComponents)
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{
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updateComponent.Count = model.AssemblyComponents[updateComponent.ComponentId].Item2;
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model.AssemblyComponents.Remove(updateComponent.ComponentId);
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}
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context.SaveChanges();
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}
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var assembly = context.Assemblies.First(x => x.Id == Id);
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foreach (var pc in model.AssemblyComponents)
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{
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context.AssemblyComponents.Add(new AssemblyComponent
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{
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Assembly = assembly,
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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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_assemblyComponents = null;
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}
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}
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}
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