PIbd-22_Turner_I.A._PlumbingRepair/PlumbingRepair/PlumbingRepairDatabaseImplement/Implements/ImplementerStorage.cs

using PlumbingRepairContracts.BindingModels;
using PlumbingRepairContracts.SearchModels;
using PlumbingRepairContracts.StoragesContracts;
using PlumbingRepairContracts.ViewModels;
using PlumbingRepairDatabaseImplement.Models;
using Microsoft.EntityFrameworkCore;

namespace PlumbingRepairDatabaseImplement.Implements
{
	public class ImplementerStorage : IImplementerStorage
	{
		public ImplementerViewModel? Delete(ImplementerBindingModel model)
		{
			using var context = new PlumbingRepairDataBase();
			var element = context.Implementers
				.Include(x => x.Orders)
				.FirstOrDefault(rec => rec.Id == model.Id);
			if (element != null)
			{
				context.Implementers.Remove(element);
				context.SaveChanges();
				return element.GetViewModel;
			}
			return null;
		}

		public ImplementerViewModel? GetElement(ImplementerSearchModel model)
		{
			if (string.IsNullOrEmpty(model.ImplementerFIO) &&
				string.IsNullOrEmpty(model.Password) &&
				!model.Id.HasValue)
			{
				return null;
			}
			using var context = new PlumbingRepairDataBase();
			return context.Implementers
			.FirstOrDefault(x => (string.IsNullOrEmpty(model.ImplementerFIO) || x.ImplementerFIO == model.ImplementerFIO) &&
								 (string.IsNullOrEmpty(model.Password) || x.Password == model.Password) &&
								 (!model.Id.HasValue || x.Id == model.Id))
			?.GetViewModel;
		}

		public List<ImplementerViewModel> GetFilteredList(ImplementerSearchModel model)
		{
			if (model == null)
			{
				return new();
			}
			if (!string.IsNullOrEmpty(model.ImplementerFIO))
			{
				using var context = new PlumbingRepairDataBase();
				return context.Implementers
					.Include(x => x.Orders)
					.Where(x => x.ImplementerFIO.Contains(model.ImplementerFIO))
					.Select(x => x.GetViewModel)
					.ToList();
			}
			return new();
		}

		public List<ImplementerViewModel> GetFullList()
		{
			using var context = new PlumbingRepairDataBase();
			return context.Implementers
					.Include(x => x.Orders)
					.Select(x => x.GetViewModel)
					.ToList();
		}

		public ImplementerViewModel? Insert(ImplementerBindingModel model)
		{
			var newImplementer = Implementer.Create(model);
			if (newImplementer == null)
			{
				return null;
			}
			using var context = new PlumbingRepairDataBase();
			context.Implementers.Add(newImplementer);
			context.SaveChanges();
			return newImplementer.GetViewModel;
		}

		public ImplementerViewModel? Update(ImplementerBindingModel model)
		{
			using var context = new PlumbingRepairDataBase();
			var client = context.Implementers.FirstOrDefault(x => x.Id == model.Id);
			if (client == null)
			{
				return null;
			}
			client.Update(model);
			context.SaveChanges();
			return client.GetViewModel;
		}
	}
}