PIbd-21_RazubaevSM_SUBD_Labs/SYBDDatabaseImplement/Implements/AutoStorage.cs

using SYBDContracts.BindingModels;
using SYBDContracts.SearchModels;
using SYBDContracts.StoragesContracts;
using SYBDContracts.ViewModels;
using SYBDDatabaseImplement.Models;

namespace SYBDDatabaseImplement.Implements
{
    public class AutoStorage : IAutoStorage
    {
        public List<AutoViewModel> GetFullList()
        {
            using var context = new SYBDDatabase();
            return context.auto
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public List<AutoViewModel> GetFilteredList(AutoSearchModel model)
        {
            if (string.IsNullOrEmpty(model.StateNumber))
            {
                return new();
            }
            using var context = new SYBDDatabase();
            return context.auto
                    .Where(x => x.StateNumber.Contains(model.StateNumber))
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public AutoViewModel? GetElement(AutoSearchModel model)
        {
            if (string.IsNullOrEmpty(model.StateNumber) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new SYBDDatabase();
            return context.auto
                    .FirstOrDefault(x => (!string.IsNullOrEmpty(model.StateNumber) && x.StateNumber == model.StateNumber) ||
                                        (model.Id.HasValue && x.Id == model.Id))
                    ?.GetViewModel;
        }

        public AutoViewModel? Insert(AutoBindingModel model)
        {
            var newAuto = Auto.Create(model);
            if (newAuto == null)
            {
                return null;
            }
            using var context = new SYBDDatabase();
            context.auto.Add(newAuto);
            context.SaveChanges();
            return newAuto.GetViewModel;
        }

        public AutoViewModel? Update(AutoBindingModel model)
        {
            using var context = new SYBDDatabase();
            var component = context.auto.FirstOrDefault(x => x.Id == model.Id);
            if (component == null)
            {
                return null;
            }
            component.Update(model);
            context.SaveChanges();
            return component.GetViewModel;
        }

        public AutoViewModel? Delete(AutoBindingModel model)
        {
            using var context = new SYBDDatabase();
            var element = context.auto.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.auto.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}