PIbd-22_Aleikin_A.M._Confectionery/Confectionery/ConfectioneryDatabaseImplement/Implements/ComponentStorage.cs

using ConfectioneryContracts.BindingModels;
using ConfectioneryContracts.SearchModels;
using ConfectioneryContracts.StoragesContracts;
using ConfectioneryContracts.ViewModels;
using ConfectioneryDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConfectioneryDatabaseImplement.Implements
{
	public class ComponentStorage : IComponentStorage
	{
		public List<ComponentViewModel> GetFullList()
		{
			using var context = new ConfectioneryDatabase();
			return context.Components.Select(x => x.GetViewModel).ToList();
		}

		public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
		{
			if (string.IsNullOrEmpty(model.ComponentName))
			{
				return new();
			}
			using var context = new ConfectioneryDatabase();
			return context.Components
				.Where(x => x.ComponentName.Contains(model.ComponentName))
				.Select(x => x.GetViewModel)
				.ToList();
		}

		public ComponentViewModel? GetElement(ComponentSearchModel model)
		{
			if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
			{
				return null;
			}
			using var context = new ConfectioneryDatabase();
			return context.Components
				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName)
				|| (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
		}

		public ComponentViewModel? Insert(ComponentBindingModel model)
		{
			var newComponent = Component.Create(model);
			if (newComponent == null)
			{
				return null;
			}
			using var context = new ConfectioneryDatabase();
			context.Components.Add(newComponent);
			context.SaveChanges();
			return newComponent.GetViewModel;
		}

		public ComponentViewModel? Update(ComponentBindingModel model)
		{
			using var context = new ConfectioneryDatabase();
			var component = context.Components.FirstOrDefault(x => x.Id == model.Id);
			if (component == null)
			{
				return null;
			}
			component.Update(model);
			context.SaveChanges();
			return component.GetViewModel;
		}

		public ComponentViewModel? Delete(ComponentBindingModel model)
		{
			using var context = new ConfectioneryDatabase();
			var element = context.Components.FirstOrDefault(rec => rec.Id == model.Id);
			if (element != null)
			{
				context.Components.Remove(element);
				context.SaveChanges();
				return element.GetViewModel;
			}
			return null;
		}
	}
}