PIbd-22_Romanov_E.V._SecuritySystem/SecuritySystemDatabaseImplement/Implements/OrderStorage.cs

using SecuritySystemContracts.BindingModels;
using SecuritySystemContracts.SearchModels;
using SecuritySystemContracts.StoragesContracts;
using SecuritySystemContracts.ViewModels;
using Microsoft.EntityFrameworkCore;
using SecuritySystemDatabaseImplement.Models;

namespace SecuritySystemDatabaseImplement.Implements
{
    public class OrderStorage : IOrderStorage
    {
        public OrderViewModel? Delete(OrderBindingModel model)
        {
            using var context = new SecuritySystemDatabase();
            var element = context.Orders.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                var deletedElement = context.Orders.Include(x => x.Secure).FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
                context.Orders.Remove(element);
                context.SaveChanges();
                return deletedElement;
            }
            return null;
        }
        public OrderViewModel? GetElement(OrderSearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return null;
            }
            using var context = new SecuritySystemDatabase();
            return context.Orders.Include(x => x.Secure).FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id)?.GetViewModel;
        }
        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
        {
            if (model is null)
                return new();

            using var context = new SecuritySystemDatabase();
            if (!model.Id.HasValue)
            {
                return context.Orders
                    .Include(x => x.Secure)
                    .Where(x => x.DateCreate >= model.DateFrom && x.DateCreate <= model.DateTo)
                    .Select(x => x.GetViewModel)
                    .ToList();
            }

            return context.Orders.Where(x => x.Id == model.Id).Select(x => x.GetViewModel).ToList();
        }
        public List<OrderViewModel> GetFullList()
        {
            using var context = new SecuritySystemDatabase();
            return context.Orders.Include(x => x.Secure).Select(x => x.GetViewModel).ToList();
        }
        public OrderViewModel? Insert(OrderBindingModel model)
        {
            var newOrder = Order.Create(model);
            if (newOrder == null)
            {
                return null;
            }
            using var context = new SecuritySystemDatabase();
            context.Orders.Add(newOrder);
            context.SaveChanges();
            return context.Orders.Include(x => x.Secure).FirstOrDefault(x => x.Id == newOrder.Id)?.GetViewModel;
        }
        public OrderViewModel? Update(OrderBindingModel model)
        {
            using var context = new SecuritySystemDatabase();
            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (order == null)
            {
                return null;
            }
            order.Update(model);
            context.SaveChanges();
            return context.Orders.Include(x => x.Secure).FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
        }
    }
}