PIbd-31_Malafeev.L.S._COP_25/Cop_25/DatabaseImplement/Implements/DeliveryStorage.cs

using Contracts.BindlingModels;
using Contracts.SearchModels;
using Contracts.StorageContracts;
using Contracts.ViewModels;
using DatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DatabaseImplement.Implements
{
    public class DeliveryStorage : IDeliveryStorage
    {
        public List<DeliveryViewModel> GetFullList()
        {
            using var context = new Database();
            return context.Deliverys.Select(x => x.GetViewModel).ToList();
        }

        public List<DeliveryViewModel> GetFilteredList(DeliverySearchModel model)
        {
            if (string.IsNullOrEmpty(model.DeliveryType))
            {
                return new();
            }
            using var context = new Database();
            return context.Deliverys.Where(x => x.DeliveryType == model.DeliveryType).Select(x => x.GetViewModel).ToList();
        }

        public DeliveryViewModel? GetElement(DeliverySearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return null;
            }
            using var context = new Database();
            return context.Deliverys.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
        }

        public DeliveryViewModel? Insert(DeliveryBindingModel model)
        {
            var newDelivery = Delivery.Create(model);
            if (newDelivery == null) return null;
            using var context = new Database();
            context.Deliverys.Add(newDelivery);
            context.SaveChanges();
            return newDelivery.GetViewModel;
        }

        public DeliveryViewModel? Update(DeliveryBindingModel model)
        {
            using var context = new Database();
            var provider = context.Deliverys.FirstOrDefault(x => x.Id == model.Id);
            if (provider == null) return null;
            provider.Update(model);
            context.SaveChanges();
            return provider.GetViewModel;
        }

        public DeliveryViewModel? Delete(DeliveryBindingModel model)
        {
            using var context = new Database();
            var element = context.Deliverys.FirstOrDefault(x => x.Id == model.Id);
            if (element != null)
            {
                context.Deliverys.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}