using CarServiceContracts.BindingModels;
using CarServiceContracts.SearchModels;
using CarServiceContracts.StorageContracts;
using CarServiceContracts.ViewModels;
using CarServiceDatabase.Models;

namespace CarServiceDatabase.Implements
{
	public class VehicleStorage : IVehicleStorage
	{
		public List<VehicleViewModel> GetFullList()
		{
			using var context = new CarServiceDbContext();
			return context.Vehicles
				.Select(x => x.GetViewModel)
				.ToList();
		}
		public List<VehicleViewModel> GetFilteredList(VehicleSearchModel model)
		{
			using var context = new CarServiceDbContext();
			return context.Vehicles
				.Where(x => x.Id == model.Id)
				.Select(x => x.GetViewModel)
				.ToList();
		}
		public VehicleViewModel? GetElement(VehicleSearchModel model)
		{
			if (model == null)
			{
				return null;
			}
			using var context = new CarServiceDbContext();
			if (model.Id.HasValue)//ищем по Id
			{
				return context.Vehicles.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
			}
			return null;
		}
		public VehicleViewModel? Insert(VehicleBindingModel model)
		{
			using var context = new CarServiceDbContext();
			var newVehicle = Vehicle.Create(context, model);
			if (newVehicle != null)
			{
				context.Vehicles.Add(newVehicle);
				context.SaveChanges();
				return newVehicle.GetViewModel;
			}
			return null;
		}
		public VehicleViewModel? Update(VehicleBindingModel model)
		{
			using var context = new CarServiceDbContext();
			var vehicle = context.Vehicles
				.FirstOrDefault(x => x.Id == model.Id);
			if (vehicle == null)
			{
				return null;
			}
			vehicle.Update(context, model);
			context.SaveChanges();
			return vehicle.GetViewModel;
		}
		public VehicleViewModel? Delete(VehicleBindingModel model)
		{
			using var context = new CarServiceDbContext();
			var vehicle = context.Vehicles
				.FirstOrDefault(x => x.Id == model.Id);
			if (vehicle == null)
			{
				return null;
			}
			context.Vehicles.Remove(vehicle);
			context.SaveChanges();
			return vehicle.GetViewModel;
		}
	}
}