90 lines
3.4 KiB
C#
90 lines
3.4 KiB
C#
using DinerContracts.BindingModels;
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using DinerContracts.ViewModels;
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using DinerDataModels.Models;
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using System.ComponentModel.DataAnnotations;
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using System.ComponentModel.DataAnnotations.Schema;
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namespace DinerDataBaseImplement.Models
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{
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public class Snack : ISnackModel
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{
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public int Id { get; set; }
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[Required]
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public string SnackName { 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)>? _snackComponents = null;
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[NotMapped]
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public Dictionary<int, (IComponentModel, int)> SnackComponents
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{
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get
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{
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if (_snackComponents == null)
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{
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_snackComponents = Components
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.ToDictionary(recPC => recPC.ComponentId, recPC => (recPC.Component as IComponentModel, recPC.Count));
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}
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return _snackComponents;
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}
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}
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[ForeignKey("SnackId")]
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public virtual List<SnackComponent> Components { get; set; } = new();
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[ForeignKey("SnackId")]
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public virtual List<Order> Orders { get; set; } = new();
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public static Snack Create(DinerDatabase context, SnackBindingModel model)
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{
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return new Snack()
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{
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Id = model.Id,
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SnackName = model.SnackName,
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Price = model.Price,
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Components = model.SnackComponents.Select(x => new SnackComponent
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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(SnackBindingModel model)
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{
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SnackName = model.SnackName;
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Price = model.Price;
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}
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public SnackViewModel GetViewModel => new()
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{
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Id = Id,
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SnackName = SnackName,
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Price = Price,
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SnackComponents = SnackComponents
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};
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public void UpdateComponents(DinerDatabase context, SnackBindingModel model)
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{
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var snackComponents = context.SnackComponents.Where(rec => rec.SnackId == model.Id).ToList();
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if (snackComponents != null && snackComponents.Count > 0)
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{ // удалили те, которых нет в модели
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context.SnackComponents.RemoveRange(snackComponents.Where(rec => !model.SnackComponents.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 snackComponents)
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{
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updateComponent.Count = model.SnackComponents[updateComponent.ComponentId].Item2;
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model.SnackComponents.Remove(updateComponent.ComponentId);
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}
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context.SaveChanges();
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}
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var snack = context.Snacks.First(x => x.Id == Id);
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foreach (var pc in model.SnackComponents)
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{
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context.SnackComponents.Add(new SnackComponent
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{
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Snack = snack,
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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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_snackComponents = null;
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}
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}
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}
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