93 lines
3.6 KiB
C#
93 lines
3.6 KiB
C#
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using MotorPlantDataModels.Models;
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using System.ComponentModel.DataAnnotations.Schema;
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using System.ComponentModel.DataAnnotations;
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using MotorPlantContracts.VeiwModels;
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using MotorPlantContracts.BindingModels;
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namespace MotorPlantDatabaseImplement.Models
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{
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public class Engine : IEngineModel
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{
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public int Id { get; set; }
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[Required]
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public string EngineName { 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)>? _engineComponents = null;
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[NotMapped]
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public Dictionary<int, (IComponentModel, int)> EngineComponents
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{
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get
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{
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if (_engineComponents == null)
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{
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_engineComponents = 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 _engineComponents;
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}
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}
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[ForeignKey("EngineId")]
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public virtual List<EngineComponent> Components { get; set; } = new();
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[ForeignKey("EngineId")]
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public virtual List<Order> Orders { get; set; } = new();
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public static Engine Create(MotorPlantDatabase context, EngineBindingModel model)
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{
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return new Engine()
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{
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Id = model.Id,
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EngineName = model.EngineName,
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Price = model.Price,
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Components = model.EngineComponents.Select(x => new EngineComponent
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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(EngineBindingModel model)
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{
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EngineName = model.EngineName;
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Price = model.Price;
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}
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public EngineViewModel GetViewModel => new()
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{
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Id = Id,
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EngineName = EngineName,
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Price = Price,
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EngineComponents = EngineComponents
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};
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public void UpdateComponents(MotorPlantDatabase context, EngineBindingModel model)
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{
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var engineComponents = context.EngineComponents.Where(rec => rec.EngineId == model.Id).ToList();
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if (engineComponents != null && engineComponents.Count > 0)
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{ // удалили те, которых нет в модели
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context.EngineComponents.RemoveRange(engineComponents.Where(rec
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=> !model.EngineComponents.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 engineComponents)
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{
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updateComponent.Count =
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model.EngineComponents[updateComponent.ComponentId].Item2;
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model.EngineComponents.Remove(updateComponent.ComponentId);
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}
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context.SaveChanges();
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}
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var engine = context.Engines.First(x => x.Id == Id);
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foreach (var pc in model.EngineComponents)
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{
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context.EngineComponents.Add(new EngineComponent
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{
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Engine = engine,
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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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_engineComponents = null;
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}
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}
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}
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